diff --git a/.gitignore b/.gitignore
index 0e4eef7..8899ac3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ local
 libssh/compile_commands.json
 wheelhouse
 .idea
+tests/unit_test_cert_key-cert.pub
diff --git a/examples/exec.py b/examples/exec.py
new file mode 100644
index 0000000..38ba16f
--- /dev/null
+++ b/examples/exec.py
@@ -0,0 +1,33 @@
+import os
+import pwd
+import socket
+
+from ssh.session import Session
+from ssh import options
+
+# Linux only
+USERNAME = pwd.getpwuid(os.geteuid()).pw_name
+HOST = 'localhost'
+PORT = 22
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((HOST, PORT))
+
+s = Session()
+s.options_set(options.HOST, HOST)
+s.options_set(options.USER, USERNAME)
+s.options_set_port(PORT)
+s.set_socket(sock)
+s.connect()
+
+# Authenticate with agent
+s.userauth_agent(USERNAME)
+
+chan = s.channel_new()
+chan.open_session()
+chan.request_exec('echo me')
+size, data = chan.read()
+while size > 0:
+    print(data.strip())
+    size, data = chan.read()
+chan.close()
diff --git a/ssh/c_ssh.pxd b/ssh/c_ssh.pxd
index 0b5eabe..cd3358d 100644
--- a/ssh/c_ssh.pxd
+++ b/ssh/c_ssh.pxd
@@ -175,7 +175,14 @@ cdef extern from "libssh/libssh.h" nogil:
         SSH_KEYTYPE_ECDSA,
         SSH_KEYTYPE_ED25519,
         SSH_KEYTYPE_DSS_CERT01,
-        SSH_KEYTYPE_RSA_CERT01
+        SSH_KEYTYPE_RSA_CERT01,
+        SSH_KEYTYPE_ECDSA_P256,
+        SSH_KEYTYPE_ECDSA_P384,
+        SSH_KEYTYPE_ECDSA_P521,
+        SSH_KEYTYPE_ECDSA_P256_CERT01,
+        SSH_KEYTYPE_ECDSA_P384_CERT01,
+        SSH_KEYTYPE_ECDSA_P521_CERT01,
+        SSH_KEYTYPE_ED25519_CERT01
     enum ssh_keycmp_e:
         SSH_KEY_CMP_PUBLIC,
         SSH_KEY_CMP_PRIVATE
@@ -452,6 +459,12 @@ cdef extern from "libssh/libssh.h" nogil:
 
     const char *ssh_pki_key_ecdsa_name(const ssh_key key)
 
+    char *ssh_get_fingerprint_hash(ssh_publickey_hash_type type,
+                                   unsigned char *hash,
+                                   size_t len)
+    void ssh_print_hash(ssh_publickey_hash_type type,
+                        unsigned char *hash,
+                        size_t len)
     void ssh_print_hexa(
         const char *descr, const unsigned char *what, size_t len)
     int ssh_send_ignore(ssh_session session, const char *data)
diff --git a/ssh/key.c b/ssh/key.c
index 687e696..c1263bd 100644
--- a/ssh/key.c
+++ b/ssh/key.c
@@ -843,6 +843,13 @@ struct __pyx_obj_3ssh_8keytypes_RSA1Key;
 struct __pyx_obj_3ssh_8keytypes_ECDSAKey;
 struct __pyx_obj_3ssh_8keytypes_DSSCert01Key;
 struct __pyx_obj_3ssh_8keytypes_RSACert01Key;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01;
 struct __pyx_obj_3ssh_3key_SSHKey;
 
 /* "keytypes.pxd":20
@@ -930,6 +937,90 @@ struct __pyx_obj_3ssh_8keytypes_RSACert01Key {
 };
 
 
+/* "keytypes.pxd":48
+ * 
+ * 
+ * cdef class ECDSA_P256(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":52
+ * 
+ * 
+ * cdef class ECDSA_P384(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":56
+ * 
+ * 
+ * cdef class ECDSA_P521(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":60
+ * 
+ * 
+ * cdef class ECDSA_P256_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":64
+ * 
+ * 
+ * cdef class ECDSA_P384_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":68
+ * 
+ * 
+ * cdef class ECDSA_P521_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "keytypes.pxd":72
+ * 
+ * 
+ * cdef class ED25519_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
 /* "ssh/key.pxd":20
  * 
  * 
@@ -1146,6 +1237,51 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg
 #define __Pyx_PyObject_Call(func, arg, kw) PyObject_Call(func, arg, kw)
 #endif
 
+/* PyFunctionFastCall.proto */
+#if CYTHON_FAST_PYCALL
+#define __Pyx_PyFunction_FastCall(func, args, nargs)\
+    __Pyx_PyFunction_FastCallDict((func), (args), (nargs), NULL)
+#if 1 || PY_VERSION_HEX < 0x030600B1
+static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs);
+#else
+#define __Pyx_PyFunction_FastCallDict(func, args, nargs, kwargs) _PyFunction_FastCallDict(func, args, nargs, kwargs)
+#endif
+#define __Pyx_BUILD_ASSERT_EXPR(cond)\
+    (sizeof(char [1 - 2*!(cond)]) - 1)
+#ifndef Py_MEMBER_SIZE
+#define Py_MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
+#endif
+  static size_t __pyx_pyframe_localsplus_offset = 0;
+  #include "frameobject.h"
+  #define __Pxy_PyFrame_Initialize_Offsets()\
+    ((void)__Pyx_BUILD_ASSERT_EXPR(sizeof(PyFrameObject) == offsetof(PyFrameObject, f_localsplus) + Py_MEMBER_SIZE(PyFrameObject, f_localsplus)),\
+     (void)(__pyx_pyframe_localsplus_offset = ((size_t)PyFrame_Type.tp_basicsize) - Py_MEMBER_SIZE(PyFrameObject, f_localsplus)))
+  #define __Pyx_PyFrame_GetLocalsplus(frame)\
+    (assert(__pyx_pyframe_localsplus_offset), (PyObject **)(((char *)(frame)) + __pyx_pyframe_localsplus_offset))
+#endif
+
+/* PyObjectCallMethO.proto */
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg);
+#endif
+
+/* PyObjectCallNoArg.proto */
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func);
+#else
+#define __Pyx_PyObject_CallNoArg(func) __Pyx_PyObject_Call(func, __pyx_empty_tuple, NULL)
+#endif
+
+/* PyCFunctionFastCall.proto */
+#if CYTHON_FAST_PYCCALL
+static CYTHON_INLINE PyObject *__Pyx_PyCFunction_FastCall(PyObject *func, PyObject **args, Py_ssize_t nargs);
+#else
+#define __Pyx_PyCFunction_FastCall(func, args, nargs)  (assert(0), NULL)
+#endif
+
+/* PyObjectCallOneArg.proto */
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg);
+
 /* PyObject_GenericGetAttrNoDict.proto */
 #if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
 static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name);
@@ -1271,6 +1407,13 @@ static PyTypeObject *__pyx_ptype_3ssh_8keytypes_RSA1Key = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSAKey = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_DSSCert01Key = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_RSACert01Key = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P256 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P384 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P521 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P256_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P384_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P521_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ED25519_CERT01 = 0;
 static struct __pyx_obj_3ssh_8keytypes_KeyType *(*__pyx_f_3ssh_8keytypes_from_keytype)(enum ssh_keytypes_e); /*proto*/
 
 /* Module declarations from 'ssh.utils' */
@@ -1300,17 +1443,23 @@ static const char __pyx_k_import[] = "__import__";
 static const char __pyx_k_reduce[] = "__reduce__";
 static const char __pyx_k_b64_key[] = "b64_key";
 static const char __pyx_k_ssh_key[] = "ssh.key";
+static const char __pyx_k_b64_cert[] = "b64_cert";
+static const char __pyx_k_cert_key[] = "cert_key";
 static const char __pyx_k_filepath[] = "filepath";
 static const char __pyx_k_generate[] = "generate";
 static const char __pyx_k_getstate[] = "__getstate__";
 static const char __pyx_k_key_type[] = "key_type";
+static const char __pyx_k_priv_key[] = "priv_key";
 static const char __pyx_k_setstate[] = "__setstate__";
 static const char __pyx_k_TypeError[] = "TypeError";
 static const char __pyx_k_reduce_ex[] = "__reduce_ex__";
 static const char __pyx_k_b_filepath[] = "b_filepath";
 static const char __pyx_k_c_filepath[] = "c_filepath";
+static const char __pyx_k_cert_key_2[] = "_cert_key";
 static const char __pyx_k_exceptions[] = "exceptions";
+static const char __pyx_k_is_private[] = "is_private";
 static const char __pyx_k_passphrase[] = "passphrase";
+static const char __pyx_k_priv_key_2[] = "_priv_key";
 static const char __pyx_k_pyx_vtable[] = "__pyx_vtable__";
 static const char __pyx_k_MemoryError[] = "MemoryError";
 static const char __pyx_k_ssh_key_pyx[] = "ssh/key.pyx";
@@ -1320,10 +1469,13 @@ static const char __pyx_k_reduce_cython[] = "__reduce_cython__";
 static const char __pyx_k_KeyExportError[] = "KeyExportError";
 static const char __pyx_k_KeyImportError[] = "KeyImportError";
 static const char __pyx_k_setstate_cython[] = "__setstate_cython__";
+static const char __pyx_k_import_cert_file[] = "import_cert_file";
 static const char __pyx_k_KeyGenerationError[] = "KeyGenerationError";
 static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
+static const char __pyx_k_import_cert_base64[] = "import_cert_base64";
 static const char __pyx_k_import_pubkey_file[] = "import_pubkey_file";
 static const char __pyx_k_import_privkey_file[] = "import_privkey_file";
+static const char __pyx_k_copy_cert_to_privkey[] = "copy_cert_to_privkey";
 static const char __pyx_k_import_pubkey_base64[] = "import_pubkey_base64";
 static const char __pyx_k_import_privkey_base64[] = "import_privkey_base64";
 static const char __pyx_k_no_default___reduce___due_to_non[] = "no default __reduce__ due to non-trivial __cinit__";
@@ -1334,6 +1486,7 @@ static PyObject *__pyx_n_s_MemoryError;
 static PyObject *__pyx_n_s_SSHKey;
 static PyObject *__pyx_n_s_TypeError;
 static PyObject *__pyx_kp_b__3;
+static PyObject *__pyx_n_s_b64_cert;
 static PyObject *__pyx_n_s_b64_key;
 static PyObject *__pyx_n_s_b_filepath;
 static PyObject *__pyx_n_s_b_passphrase;
@@ -1341,16 +1494,22 @@ static PyObject *__pyx_n_s_bits;
 static PyObject *__pyx_n_s_c_filepath;
 static PyObject *__pyx_n_s_c_key;
 static PyObject *__pyx_n_s_c_passphrase;
+static PyObject *__pyx_n_s_cert_key;
+static PyObject *__pyx_n_s_cert_key_2;
 static PyObject *__pyx_n_s_cline_in_traceback;
+static PyObject *__pyx_n_s_copy_cert_to_privkey;
 static PyObject *__pyx_n_s_exceptions;
 static PyObject *__pyx_n_s_filepath;
 static PyObject *__pyx_n_s_generate;
 static PyObject *__pyx_n_s_getstate;
 static PyObject *__pyx_n_s_import;
+static PyObject *__pyx_n_s_import_cert_base64;
+static PyObject *__pyx_n_s_import_cert_file;
 static PyObject *__pyx_n_s_import_privkey_base64;
 static PyObject *__pyx_n_s_import_privkey_file;
 static PyObject *__pyx_n_s_import_pubkey_base64;
 static PyObject *__pyx_n_s_import_pubkey_file;
+static PyObject *__pyx_n_s_is_private;
 static PyObject *__pyx_n_s_key;
 static PyObject *__pyx_n_s_key_2;
 static PyObject *__pyx_n_s_key_type;
@@ -1358,6 +1517,8 @@ static PyObject *__pyx_n_s_main;
 static PyObject *__pyx_n_s_name;
 static PyObject *__pyx_kp_s_no_default___reduce___due_to_non;
 static PyObject *__pyx_n_s_passphrase;
+static PyObject *__pyx_n_s_priv_key;
+static PyObject *__pyx_n_s_priv_key_2;
 static PyObject *__pyx_n_s_pyx_vtable;
 static PyObject *__pyx_n_s_rc;
 static PyObject *__pyx_n_s_reduce;
@@ -1385,6 +1546,9 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
 static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_filepath, PyObject *__pyx_v_passphrase); /* proto */
 static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_b64_key, struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_key_type); /* proto */
 static PyObject *__pyx_pf_3ssh_3key_8import_pubkey_file(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_filepath); /* proto */
+static PyObject *__pyx_pf_3ssh_3key_10import_cert_base64(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_b64_cert, struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_key_type); /* proto */
+static PyObject *__pyx_pf_3ssh_3key_12import_cert_file(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_filepath); /* proto */
+static PyObject *__pyx_pf_3ssh_3key_14copy_cert_to_privkey(CYTHON_UNUSED PyObject *__pyx_self, struct __pyx_obj_3ssh_3key_SSHKey *__pyx_v_cert_key, struct __pyx_obj_3ssh_3key_SSHKey *__pyx_v_priv_key); /* proto */
 static PyObject *__pyx_tp_new_3ssh_3key_SSHKey(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tuple_;
 static PyObject *__pyx_tuple__2;
@@ -1393,11 +1557,17 @@ static PyObject *__pyx_tuple__6;
 static PyObject *__pyx_tuple__8;
 static PyObject *__pyx_tuple__10;
 static PyObject *__pyx_tuple__12;
+static PyObject *__pyx_tuple__14;
+static PyObject *__pyx_tuple__16;
+static PyObject *__pyx_tuple__18;
 static PyObject *__pyx_codeobj__5;
 static PyObject *__pyx_codeobj__7;
 static PyObject *__pyx_codeobj__9;
 static PyObject *__pyx_codeobj__11;
 static PyObject *__pyx_codeobj__13;
+static PyObject *__pyx_codeobj__15;
+static PyObject *__pyx_codeobj__17;
+static PyObject *__pyx_codeobj__19;
 /* Late includes */
 
 /* "ssh/key.pyx":30
@@ -2010,7 +2180,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_8__eq__(struct __pyx_obj_3ssh_3key_S
  * 
  *     def key_type(self):             # <<<<<<<<<<<<<<
  *         cdef c_ssh.ssh_keytypes_e _type
- *         with nogil:
+ *         if self._key is NULL:
  */
 
 /* Python wrapper */
@@ -2031,7 +2201,8 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_10key_type(struct __pyx_obj_3ssh_3ke
   enum ssh_keytypes_e __pyx_v__type;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
-  PyObject *__pyx_t_1 = NULL;
+  int __pyx_t_1;
+  PyObject *__pyx_t_2 = NULL;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
@@ -2040,59 +2211,54 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_10key_type(struct __pyx_obj_3ssh_3ke
   /* "ssh/key.pyx":72
  *     def key_type(self):
  *         cdef c_ssh.ssh_keytypes_e _type
- *         with nogil:             # <<<<<<<<<<<<<<
- *             _type = c_ssh.ssh_key_type(self._key)
- *         return from_keytype(_type)
+ *         if self._key is NULL:             # <<<<<<<<<<<<<<
+ *             return
+ *         _type = c_ssh.ssh_key_type(self._key)
  */
-  {
-      #ifdef WITH_THREAD
-      PyThreadState *_save;
-      Py_UNBLOCK_THREADS
-      __Pyx_FastGIL_Remember();
-      #endif
-      /*try:*/ {
+  __pyx_t_1 = ((__pyx_v_self->_key == NULL) != 0);
+  if (__pyx_t_1) {
 
-        /* "ssh/key.pyx":73
+    /* "ssh/key.pyx":73
  *         cdef c_ssh.ssh_keytypes_e _type
- *         with nogil:
- *             _type = c_ssh.ssh_key_type(self._key)             # <<<<<<<<<<<<<<
+ *         if self._key is NULL:
+ *             return             # <<<<<<<<<<<<<<
+ *         _type = c_ssh.ssh_key_type(self._key)
  *         return from_keytype(_type)
- * 
  */
-        __pyx_v__type = ssh_key_type(__pyx_v_self->_key);
-      }
+    __Pyx_XDECREF(__pyx_r);
+    __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+    goto __pyx_L0;
 
-      /* "ssh/key.pyx":72
+    /* "ssh/key.pyx":72
  *     def key_type(self):
  *         cdef c_ssh.ssh_keytypes_e _type
- *         with nogil:             # <<<<<<<<<<<<<<
- *             _type = c_ssh.ssh_key_type(self._key)
- *         return from_keytype(_type)
+ *         if self._key is NULL:             # <<<<<<<<<<<<<<
+ *             return
+ *         _type = c_ssh.ssh_key_type(self._key)
  */
-      /*finally:*/ {
-        /*normal exit:*/{
-          #ifdef WITH_THREAD
-          __Pyx_FastGIL_Forget();
-          Py_BLOCK_THREADS
-          #endif
-          goto __pyx_L5;
-        }
-        __pyx_L5:;
-      }
   }
 
   /* "ssh/key.pyx":74
- *         with nogil:
- *             _type = c_ssh.ssh_key_type(self._key)
+ *         if self._key is NULL:
+ *             return
+ *         _type = c_ssh.ssh_key_type(self._key)             # <<<<<<<<<<<<<<
+ *         return from_keytype(_type)
+ * 
+ */
+  __pyx_v__type = ssh_key_type(__pyx_v_self->_key);
+
+  /* "ssh/key.pyx":75
+ *             return
+ *         _type = c_ssh.ssh_key_type(self._key)
  *         return from_keytype(_type)             # <<<<<<<<<<<<<<
  * 
  *     def ecdsa_name(self):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = ((PyObject *)__pyx_f_3ssh_8keytypes_from_keytype(__pyx_v__type)); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 74, __pyx_L1_error)
-  __Pyx_GOTREF(__pyx_t_1);
-  __pyx_r = __pyx_t_1;
-  __pyx_t_1 = 0;
+  __pyx_t_2 = ((PyObject *)__pyx_f_3ssh_8keytypes_from_keytype(__pyx_v__type)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 75, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_r = __pyx_t_2;
+  __pyx_t_2 = 0;
   goto __pyx_L0;
 
   /* "ssh/key.pyx":70
@@ -2100,12 +2266,12 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_10key_type(struct __pyx_obj_3ssh_3ke
  * 
  *     def key_type(self):             # <<<<<<<<<<<<<<
  *         cdef c_ssh.ssh_keytypes_e _type
- *         with nogil:
+ *         if self._key is NULL:
  */
 
   /* function exit code */
   __pyx_L1_error:;
-  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
   __Pyx_AddTraceback("ssh.key.SSHKey.key_type", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
@@ -2114,7 +2280,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_10key_type(struct __pyx_obj_3ssh_3ke
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":76
+/* "ssh/key.pyx":77
  *         return from_keytype(_type)
  * 
  *     def ecdsa_name(self):             # <<<<<<<<<<<<<<
@@ -2148,7 +2314,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("ecdsa_name", 0);
 
-  /* "ssh/key.pyx":79
+  /* "ssh/key.pyx":80
  *         cdef const_char *c_name
  *         cdef bytes b_name
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2163,7 +2329,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":80
+        /* "ssh/key.pyx":81
  *         cdef bytes b_name
  *         with nogil:
  *             c_name = c_ssh.ssh_pki_key_ecdsa_name(self._key)             # <<<<<<<<<<<<<<
@@ -2173,7 +2339,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
         __pyx_v_c_name = ssh_pki_key_ecdsa_name(__pyx_v_self->_key);
       }
 
-      /* "ssh/key.pyx":79
+      /* "ssh/key.pyx":80
  *         cdef const_char *c_name
  *         cdef bytes b_name
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2192,19 +2358,19 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
       }
   }
 
-  /* "ssh/key.pyx":81
+  /* "ssh/key.pyx":82
  *         with nogil:
  *             c_name = c_ssh.ssh_pki_key_ecdsa_name(self._key)
  *         b_name = c_name             # <<<<<<<<<<<<<<
  *         return to_str(b_name)
  * 
  */
-  __pyx_t_1 = __Pyx_PyBytes_FromString(__pyx_v_c_name); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 81, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyBytes_FromString(__pyx_v_c_name); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 82, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_b_name = ((PyObject*)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "ssh/key.pyx":82
+  /* "ssh/key.pyx":83
  *             c_name = c_ssh.ssh_pki_key_ecdsa_name(self._key)
  *         b_name = c_name
  *         return to_str(b_name)             # <<<<<<<<<<<<<<
@@ -2212,14 +2378,14 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
  *     def export_privkey_file(self, filepath, passphrase=None):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_2 = __Pyx_PyBytes_AsWritableString(__pyx_v_b_name); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 82, __pyx_L1_error)
-  __pyx_t_1 = __pyx_f_3ssh_5utils_to_str(__pyx_t_2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 82, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBytes_AsWritableString(__pyx_v_b_name); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 83, __pyx_L1_error)
+  __pyx_t_1 = __pyx_f_3ssh_5utils_to_str(__pyx_t_2); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 83, __pyx_L1_error)
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   __pyx_r = __pyx_t_1;
   __pyx_t_1 = 0;
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":76
+  /* "ssh/key.pyx":77
  *         return from_keytype(_type)
  * 
  *     def ecdsa_name(self):             # <<<<<<<<<<<<<<
@@ -2239,7 +2405,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_12ecdsa_name(struct __pyx_obj_3ssh_3
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":84
+/* "ssh/key.pyx":85
  *         return to_str(b_name)
  * 
  *     def export_privkey_file(self, filepath, passphrase=None):             # <<<<<<<<<<<<<<
@@ -2287,7 +2453,7 @@ static PyObject *__pyx_pw_3ssh_3key_6SSHKey_15export_privkey_file(PyObject *__py
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "export_privkey_file") < 0)) __PYX_ERR(0, 84, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "export_privkey_file") < 0)) __PYX_ERR(0, 85, __pyx_L3_error)
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     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -2303,7 +2469,7 @@ static PyObject *__pyx_pw_3ssh_3key_6SSHKey_15export_privkey_file(PyObject *__py
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("export_privkey_file", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 84, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("export_privkey_file", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 85, __pyx_L3_error)
   __pyx_L3_error:;
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@@ -2333,19 +2499,19 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("export_privkey_file", 0);
 
-  /* "ssh/key.pyx":86
+  /* "ssh/key.pyx":87
  *     def export_privkey_file(self, filepath, passphrase=None):
  *         cdef bytes b_passphrase
  *         cdef bytes b_filepath = to_bytes(filepath)             # <<<<<<<<<<<<<<
  *         cdef const_char *c_passphrase = NULL
  *         cdef const_char *c_filepath = b_filepath
  */
-  __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_filepath); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 86, __pyx_L1_error)
+  __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_filepath); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 87, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_b_filepath = ((PyObject*)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "ssh/key.pyx":87
+  /* "ssh/key.pyx":88
  *         cdef bytes b_passphrase
  *         cdef bytes b_filepath = to_bytes(filepath)
  *         cdef const_char *c_passphrase = NULL             # <<<<<<<<<<<<<<
@@ -2354,7 +2520,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
  */
   __pyx_v_c_passphrase = NULL;
 
-  /* "ssh/key.pyx":88
+  /* "ssh/key.pyx":89
  *         cdef bytes b_filepath = to_bytes(filepath)
  *         cdef const_char *c_passphrase = NULL
  *         cdef const_char *c_filepath = b_filepath             # <<<<<<<<<<<<<<
@@ -2363,12 +2529,12 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
  */
   if (unlikely(__pyx_v_b_filepath == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-    __PYX_ERR(0, 88, __pyx_L1_error)
+    __PYX_ERR(0, 89, __pyx_L1_error)
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-  __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_filepath); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 88, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_filepath); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 89, __pyx_L1_error)
   __pyx_v_c_filepath = __pyx_t_2;
 
-  /* "ssh/key.pyx":90
+  /* "ssh/key.pyx":91
  *         cdef const_char *c_filepath = b_filepath
  *         cdef int rc
  *         if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -2379,19 +2545,19 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
   __pyx_t_4 = (__pyx_t_3 != 0);
   if (__pyx_t_4) {
 
-    /* "ssh/key.pyx":91
+    /* "ssh/key.pyx":92
  *         cdef int rc
  *         if passphrase is not None:
  *             b_passphrase = to_bytes(passphrase)             # <<<<<<<<<<<<<<
  *             c_passphrase = b_passphrase
  *         with nogil:
  */
-    __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 91, __pyx_L1_error)
+    __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 92, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_v_b_passphrase = ((PyObject*)__pyx_t_1);
     __pyx_t_1 = 0;
 
-    /* "ssh/key.pyx":92
+    /* "ssh/key.pyx":93
  *         if passphrase is not None:
  *             b_passphrase = to_bytes(passphrase)
  *             c_passphrase = b_passphrase             # <<<<<<<<<<<<<<
@@ -2400,12 +2566,12 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
  */
     if (unlikely(__pyx_v_b_passphrase == Py_None)) {
       PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-      __PYX_ERR(0, 92, __pyx_L1_error)
+      __PYX_ERR(0, 93, __pyx_L1_error)
     }
-    __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 92, __pyx_L1_error)
+    __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 93, __pyx_L1_error)
     __pyx_v_c_passphrase = __pyx_t_2;
 
-    /* "ssh/key.pyx":90
+    /* "ssh/key.pyx":91
  *         cdef const_char *c_filepath = b_filepath
  *         cdef int rc
  *         if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -2414,7 +2580,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
  */
   }
 
-  /* "ssh/key.pyx":93
+  /* "ssh/key.pyx":94
  *             b_passphrase = to_bytes(passphrase)
  *             c_passphrase = b_passphrase
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2429,7 +2595,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":94
+        /* "ssh/key.pyx":95
  *             c_passphrase = b_passphrase
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_privkey_file(             # <<<<<<<<<<<<<<
@@ -2439,7 +2605,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
         __pyx_v_rc = ssh_pki_export_privkey_file(__pyx_v_self->_key, __pyx_v_c_passphrase, NULL, NULL, __pyx_v_c_filepath);
       }
 
-      /* "ssh/key.pyx":93
+      /* "ssh/key.pyx":94
  *             b_passphrase = to_bytes(passphrase)
  *             c_passphrase = b_passphrase
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2458,7 +2624,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
       }
   }
 
-  /* "ssh/key.pyx":96
+  /* "ssh/key.pyx":97
  *             rc = c_ssh.ssh_pki_export_privkey_file(
  *                 self._key, c_passphrase, NULL, NULL, c_filepath)
  *         if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2468,20 +2634,20 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
   __pyx_t_4 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_4)) {
 
-    /* "ssh/key.pyx":97
+    /* "ssh/key.pyx":98
  *                 self._key, c_passphrase, NULL, NULL, c_filepath)
  *         if rc != c_ssh.SSH_OK:
  *             raise KeyExportError             # <<<<<<<<<<<<<<
  * 
  *     def export_privkey_to_pubkey(self):
  */
-    __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 97, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 98, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_Raise(__pyx_t_1, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    __PYX_ERR(0, 97, __pyx_L1_error)
+    __PYX_ERR(0, 98, __pyx_L1_error)
 
-    /* "ssh/key.pyx":96
+    /* "ssh/key.pyx":97
  *             rc = c_ssh.ssh_pki_export_privkey_file(
  *                 self._key, c_passphrase, NULL, NULL, c_filepath)
  *         if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2490,7 +2656,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
  */
   }
 
-  /* "ssh/key.pyx":84
+  /* "ssh/key.pyx":85
  *         return to_str(b_name)
  * 
  *     def export_privkey_file(self, filepath, passphrase=None):             # <<<<<<<<<<<<<<
@@ -2513,7 +2679,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_14export_privkey_file(struct __pyx_o
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":99
+/* "ssh/key.pyx":100
  *             raise KeyExportError
  * 
  *     def export_privkey_to_pubkey(self):             # <<<<<<<<<<<<<<
@@ -2548,7 +2714,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
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-  /* "ssh/key.pyx":103
+  /* "ssh/key.pyx":104
  *         cdef c_ssh.ssh_key _pub_key
  *         cdef int rc
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2563,7 +2729,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":104
+        /* "ssh/key.pyx":105
  *         cdef int rc
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_privkey_to_pubkey(self._key, &_pub_key)             # <<<<<<<<<<<<<<
@@ -2573,7 +2739,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
         __pyx_v_rc = ssh_pki_export_privkey_to_pubkey(__pyx_v_self->_key, (&__pyx_v__pub_key));
       }
 
-      /* "ssh/key.pyx":103
+      /* "ssh/key.pyx":104
  *         cdef c_ssh.ssh_key _pub_key
  *         cdef int rc
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2592,7 +2758,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
       }
   }
 
-  /* "ssh/key.pyx":105
+  /* "ssh/key.pyx":106
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_privkey_to_pubkey(self._key, &_pub_key)
  *         if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2602,20 +2768,20 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
   __pyx_t_1 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_1)) {
 
-    /* "ssh/key.pyx":106
+    /* "ssh/key.pyx":107
  *             rc = c_ssh.ssh_pki_export_privkey_to_pubkey(self._key, &_pub_key)
  *         if rc != c_ssh.SSH_OK:
  *             raise KeyExportError             # <<<<<<<<<<<<<<
  *         pub_key = SSHKey.from_ptr(_pub_key)
  *         return pub_key
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-    __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 106, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 107, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
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     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __PYX_ERR(0, 106, __pyx_L1_error)
+    __PYX_ERR(0, 107, __pyx_L1_error)
 
-    /* "ssh/key.pyx":105
+    /* "ssh/key.pyx":106
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_privkey_to_pubkey(self._key, &_pub_key)
  *         if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2624,19 +2790,19 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
  */
   }
 
-  /* "ssh/key.pyx":107
+  /* "ssh/key.pyx":108
  *         if rc != c_ssh.SSH_OK:
  *             raise KeyExportError
  *         pub_key = SSHKey.from_ptr(_pub_key)             # <<<<<<<<<<<<<<
  *         return pub_key
  * 
  */
-  __pyx_t_2 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__pub_key)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 107, __pyx_L1_error)
+  __pyx_t_2 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__pub_key)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 108, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __pyx_v_pub_key = ((struct __pyx_obj_3ssh_3key_SSHKey *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":108
+  /* "ssh/key.pyx":109
  *             raise KeyExportError
  *         pub_key = SSHKey.from_ptr(_pub_key)
  *         return pub_key             # <<<<<<<<<<<<<<
@@ -2648,7 +2814,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
   __pyx_r = ((PyObject *)__pyx_v_pub_key);
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":99
+  /* "ssh/key.pyx":100
  *             raise KeyExportError
  * 
  *     def export_privkey_to_pubkey(self):             # <<<<<<<<<<<<<<
@@ -2668,7 +2834,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_16export_privkey_to_pubkey(struct __
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":110
+/* "ssh/key.pyx":111
  *         return pub_key
  * 
  *     def export_pubkey_base64(self):             # <<<<<<<<<<<<<<
@@ -2703,7 +2869,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
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-  /* "ssh/key.pyx":115
+  /* "ssh/key.pyx":116
  *         cdef bytes b_key
  *         cdef size_t key_len
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2718,7 +2884,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":116
+        /* "ssh/key.pyx":117
  *         cdef size_t key_len
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_pubkey_base64(self._key, &_key)             # <<<<<<<<<<<<<<
@@ -2727,7 +2893,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
  */
         __pyx_v_rc = ssh_pki_export_pubkey_base64(__pyx_v_self->_key, (&__pyx_v__key));
 
-        /* "ssh/key.pyx":117
+        /* "ssh/key.pyx":118
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_pubkey_base64(self._key, &_key)
  *             if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2737,7 +2903,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
         __pyx_t_1 = ((__pyx_v_rc != SSH_OK) != 0);
         if (__pyx_t_1) {
 
-          /* "ssh/key.pyx":118
+          /* "ssh/key.pyx":119
  *             rc = c_ssh.ssh_pki_export_pubkey_base64(self._key, &_key)
  *             if rc != c_ssh.SSH_OK:
  *                 with gil:             # <<<<<<<<<<<<<<
@@ -2750,21 +2916,21 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
               #endif
               /*try:*/ {
 
-                /* "ssh/key.pyx":119
+                /* "ssh/key.pyx":120
  *             if rc != c_ssh.SSH_OK:
  *                 with gil:
  *                     raise KeyExportError             # <<<<<<<<<<<<<<
  *         b_key = _key
  *         c_ssh.ssh_string_free_char(_key)
  */
-                __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 119, __pyx_L8_error)
+                __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyExportError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 120, __pyx_L8_error)
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_Raise(__pyx_t_2, 0, 0, 0);
                 __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-                __PYX_ERR(0, 119, __pyx_L8_error)
+                __PYX_ERR(0, 120, __pyx_L8_error)
               }
 
-              /* "ssh/key.pyx":118
+              /* "ssh/key.pyx":119
  *             rc = c_ssh.ssh_pki_export_pubkey_base64(self._key, &_key)
  *             if rc != c_ssh.SSH_OK:
  *                 with gil:             # <<<<<<<<<<<<<<
@@ -2781,7 +2947,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
               }
           }
 
-          /* "ssh/key.pyx":117
+          /* "ssh/key.pyx":118
  *         with nogil:
  *             rc = c_ssh.ssh_pki_export_pubkey_base64(self._key, &_key)
  *             if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -2791,7 +2957,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
         }
       }
 
-      /* "ssh/key.pyx":115
+      /* "ssh/key.pyx":116
  *         cdef bytes b_key
  *         cdef size_t key_len
  *         with nogil:             # <<<<<<<<<<<<<<
@@ -2817,19 +2983,19 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
       }
   }
 
-  /* "ssh/key.pyx":120
+  /* "ssh/key.pyx":121
  *                 with gil:
  *                     raise KeyExportError
  *         b_key = _key             # <<<<<<<<<<<<<<
  *         c_ssh.ssh_string_free_char(_key)
  *         return b_key
  */
-  __pyx_t_2 = __Pyx_PyBytes_FromString(__pyx_v__key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 120, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBytes_FromString(__pyx_v__key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 121, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __pyx_v_b_key = ((PyObject*)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":121
+  /* "ssh/key.pyx":122
  *                     raise KeyExportError
  *         b_key = _key
  *         c_ssh.ssh_string_free_char(_key)             # <<<<<<<<<<<<<<
@@ -2838,7 +3004,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
  */
   ssh_string_free_char(__pyx_v__key);
 
-  /* "ssh/key.pyx":122
+  /* "ssh/key.pyx":123
  *         b_key = _key
  *         c_ssh.ssh_string_free_char(_key)
  *         return b_key             # <<<<<<<<<<<<<<
@@ -2850,7 +3016,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_18export_pubkey_base64(struct __pyx_
   __pyx_r = __pyx_v_b_key;
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":110
+  /* "ssh/key.pyx":111
  *         return pub_key
  * 
  *     def export_pubkey_base64(self):             # <<<<<<<<<<<<<<
@@ -2985,7 +3151,7 @@ static PyObject *__pyx_pf_3ssh_3key_6SSHKey_22__setstate_cython__(CYTHON_UNUSED
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":125
+/* "ssh/key.pyx":127
  * 
  * 
  * def generate(KeyType key_type, int bits):             # <<<<<<<<<<<<<<
@@ -3029,11 +3195,11 @@ static PyObject *__pyx_pw_3ssh_3key_1generate(PyObject *__pyx_self, PyObject *__
         case  1:
         if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_bits)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("generate", 1, 2, 2, 1); __PYX_ERR(0, 125, __pyx_L3_error)
+          __Pyx_RaiseArgtupleInvalid("generate", 1, 2, 2, 1); __PYX_ERR(0, 127, __pyx_L3_error)
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "generate") < 0)) __PYX_ERR(0, 125, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "generate") < 0)) __PYX_ERR(0, 127, __pyx_L3_error)
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
       goto __pyx_L5_argtuple_error;
@@ -3042,17 +3208,17 @@ static PyObject *__pyx_pw_3ssh_3key_1generate(PyObject *__pyx_self, PyObject *__
       values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
     }
     __pyx_v_key_type = ((struct __pyx_obj_3ssh_8keytypes_KeyType *)values[0]);
-    __pyx_v_bits = __Pyx_PyInt_As_int(values[1]); if (unlikely((__pyx_v_bits == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 125, __pyx_L3_error)
+    __pyx_v_bits = __Pyx_PyInt_As_int(values[1]); if (unlikely((__pyx_v_bits == (int)-1) && PyErr_Occurred())) __PYX_ERR(0, 127, __pyx_L3_error)
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("generate", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 125, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("generate", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 127, __pyx_L3_error)
   __pyx_L3_error:;
   __Pyx_AddTraceback("ssh.key.generate", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
   return NULL;
   __pyx_L4_argument_unpacking_done:;
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_key_type), __pyx_ptype_3ssh_8keytypes_KeyType, 1, "key_type", 0))) __PYX_ERR(0, 125, __pyx_L1_error)
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_key_type), __pyx_ptype_3ssh_8keytypes_KeyType, 1, "key_type", 0))) __PYX_ERR(0, 127, __pyx_L1_error)
   __pyx_r = __pyx_pf_3ssh_3key_generate(__pyx_self, __pyx_v_key_type, __pyx_v_bits);
 
   /* function exit code */
@@ -3077,7 +3243,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("generate", 0);
 
-  /* "ssh/key.pyx":129
+  /* "ssh/key.pyx":131
  *     cdef c_ssh.ssh_key _key
  *     cdef int rc
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3092,7 +3258,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":130
+        /* "ssh/key.pyx":132
  *     cdef int rc
  *     with nogil:
  *         rc = c_ssh.ssh_pki_generate(key_type._type, bits, &_key)             # <<<<<<<<<<<<<<
@@ -3102,7 +3268,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
         __pyx_v_rc = ssh_pki_generate(__pyx_v_key_type->_type, __pyx_v_bits, (&__pyx_v__key));
       }
 
-      /* "ssh/key.pyx":129
+      /* "ssh/key.pyx":131
  *     cdef c_ssh.ssh_key _key
  *     cdef int rc
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3121,7 +3287,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
       }
   }
 
-  /* "ssh/key.pyx":131
+  /* "ssh/key.pyx":133
  *     with nogil:
  *         rc = c_ssh.ssh_pki_generate(key_type._type, bits, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3131,20 +3297,20 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
   __pyx_t_1 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_1)) {
 
-    /* "ssh/key.pyx":132
+    /* "ssh/key.pyx":134
  *         rc = c_ssh.ssh_pki_generate(key_type._type, bits, &_key)
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyGenerationError             # <<<<<<<<<<<<<<
  *     key = SSHKey.from_ptr(_key)
  *     return key
  */
-    __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyGenerationError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 132, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_2, __pyx_n_s_KeyGenerationError); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 134, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_Raise(__pyx_t_2, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __PYX_ERR(0, 132, __pyx_L1_error)
+    __PYX_ERR(0, 134, __pyx_L1_error)
 
-    /* "ssh/key.pyx":131
+    /* "ssh/key.pyx":133
  *     with nogil:
  *         rc = c_ssh.ssh_pki_generate(key_type._type, bits, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3153,19 +3319,19 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
  */
   }
 
-  /* "ssh/key.pyx":133
+  /* "ssh/key.pyx":135
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyGenerationError
  *     key = SSHKey.from_ptr(_key)             # <<<<<<<<<<<<<<
  *     return key
  * 
  */
-  __pyx_t_2 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 133, __pyx_L1_error)
+  __pyx_t_2 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 135, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
   __pyx_v_key = ((struct __pyx_obj_3ssh_3key_SSHKey *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":134
+  /* "ssh/key.pyx":136
  *         raise KeyGenerationError
  *     key = SSHKey.from_ptr(_key)
  *     return key             # <<<<<<<<<<<<<<
@@ -3177,7 +3343,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
   __pyx_r = ((PyObject *)__pyx_v_key);
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":125
+  /* "ssh/key.pyx":127
  * 
  * 
  * def generate(KeyType key_type, int bits):             # <<<<<<<<<<<<<<
@@ -3197,7 +3363,7 @@ static PyObject *__pyx_pf_3ssh_3key_generate(CYTHON_UNUSED PyObject *__pyx_self,
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":137
+/* "ssh/key.pyx":139
  * 
  * 
  * def import_privkey_base64(bytes b64_key, passphrase=b''):             # <<<<<<<<<<<<<<
@@ -3246,7 +3412,7 @@ static PyObject *__pyx_pw_3ssh_3key_3import_privkey_base64(PyObject *__pyx_self,
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_privkey_base64") < 0)) __PYX_ERR(0, 137, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_privkey_base64") < 0)) __PYX_ERR(0, 139, __pyx_L3_error)
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -3262,13 +3428,13 @@ static PyObject *__pyx_pw_3ssh_3key_3import_privkey_base64(PyObject *__pyx_self,
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("import_privkey_base64", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 137, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("import_privkey_base64", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 139, __pyx_L3_error)
   __pyx_L3_error:;
   __Pyx_AddTraceback("ssh.key.import_privkey_base64", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
   return NULL;
   __pyx_L4_argument_unpacking_done:;
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_b64_key), (&PyBytes_Type), 1, "b64_key", 1))) __PYX_ERR(0, 137, __pyx_L1_error)
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_b64_key), (&PyBytes_Type), 1, "b64_key", 1))) __PYX_ERR(0, 139, __pyx_L1_error)
   __pyx_r = __pyx_pf_3ssh_3key_2import_privkey_base64(__pyx_self, __pyx_v_b64_key, __pyx_v_passphrase);
 
   /* function exit code */
@@ -3298,7 +3464,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("import_privkey_base64", 0);
 
-  /* "ssh/key.pyx":138
+  /* "ssh/key.pyx":140
  * 
  * def import_privkey_base64(bytes b64_key, passphrase=b''):
  *     cdef const_char *c_key = b64_key             # <<<<<<<<<<<<<<
@@ -3307,12 +3473,12 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
  */
   if (unlikely(__pyx_v_b64_key == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-    __PYX_ERR(0, 138, __pyx_L1_error)
+    __PYX_ERR(0, 140, __pyx_L1_error)
   }
-  __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b64_key); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 138, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b64_key); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 140, __pyx_L1_error)
   __pyx_v_c_key = __pyx_t_1;
 
-  /* "ssh/key.pyx":140
+  /* "ssh/key.pyx":142
  *     cdef const_char *c_key = b64_key
  *     cdef bytes b_passphrase
  *     cdef const_char *c_passphrase = NULL             # <<<<<<<<<<<<<<
@@ -3321,7 +3487,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
  */
   __pyx_v_c_passphrase = NULL;
 
-  /* "ssh/key.pyx":144
+  /* "ssh/key.pyx":146
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -3332,19 +3498,19 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
   __pyx_t_3 = (__pyx_t_2 != 0);
   if (__pyx_t_3) {
 
-    /* "ssh/key.pyx":145
+    /* "ssh/key.pyx":147
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:
  *         b_passphrase = to_bytes(passphrase)             # <<<<<<<<<<<<<<
  *         c_passphrase = b_passphrase
  *     with nogil:
  */
-    __pyx_t_4 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 145, __pyx_L1_error)
+    __pyx_t_4 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 147, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
     __pyx_v_b_passphrase = ((PyObject*)__pyx_t_4);
     __pyx_t_4 = 0;
 
-    /* "ssh/key.pyx":146
+    /* "ssh/key.pyx":148
  *     if passphrase is not None:
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase             # <<<<<<<<<<<<<<
@@ -3353,12 +3519,12 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
  */
     if (unlikely(__pyx_v_b_passphrase == Py_None)) {
       PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-      __PYX_ERR(0, 146, __pyx_L1_error)
+      __PYX_ERR(0, 148, __pyx_L1_error)
     }
-    __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 146, __pyx_L1_error)
+    __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 148, __pyx_L1_error)
     __pyx_v_c_passphrase = __pyx_t_1;
 
-    /* "ssh/key.pyx":144
+    /* "ssh/key.pyx":146
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -3367,7 +3533,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
  */
   }
 
-  /* "ssh/key.pyx":147
+  /* "ssh/key.pyx":149
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3382,7 +3548,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":148
+        /* "ssh/key.pyx":150
  *         c_passphrase = b_passphrase
  *     with nogil:
  *         rc = c_ssh.ssh_pki_import_privkey_base64(             # <<<<<<<<<<<<<<
@@ -3392,7 +3558,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
         __pyx_v_rc = ssh_pki_import_privkey_base64(__pyx_v_c_key, __pyx_v_c_passphrase, NULL, NULL, (&__pyx_v__key));
       }
 
-      /* "ssh/key.pyx":147
+      /* "ssh/key.pyx":149
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3411,7 +3577,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
       }
   }
 
-  /* "ssh/key.pyx":150
+  /* "ssh/key.pyx":152
  *         rc = c_ssh.ssh_pki_import_privkey_base64(
  *             c_key, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3421,20 +3587,20 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
   __pyx_t_3 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_3)) {
 
-    /* "ssh/key.pyx":151
+    /* "ssh/key.pyx":153
  *             c_key, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError             # <<<<<<<<<<<<<<
  *     key = SSHKey.from_ptr(_key)
  *     return key
  */
-    __Pyx_GetModuleGlobalName(__pyx_t_4, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 151, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_4, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 153, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_Raise(__pyx_t_4, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __PYX_ERR(0, 151, __pyx_L1_error)
+    __PYX_ERR(0, 153, __pyx_L1_error)
 
-    /* "ssh/key.pyx":150
+    /* "ssh/key.pyx":152
  *         rc = c_ssh.ssh_pki_import_privkey_base64(
  *             c_key, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3443,19 +3609,19 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
  */
   }
 
-  /* "ssh/key.pyx":152
+  /* "ssh/key.pyx":154
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)             # <<<<<<<<<<<<<<
  *     return key
  * 
  */
-  __pyx_t_4 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 152, __pyx_L1_error)
+  __pyx_t_4 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_4)) __PYX_ERR(0, 154, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
   __pyx_v_key = ((struct __pyx_obj_3ssh_3key_SSHKey *)__pyx_t_4);
   __pyx_t_4 = 0;
 
-  /* "ssh/key.pyx":153
+  /* "ssh/key.pyx":155
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)
  *     return key             # <<<<<<<<<<<<<<
@@ -3467,7 +3633,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
   __pyx_r = ((PyObject *)__pyx_v_key);
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":137
+  /* "ssh/key.pyx":139
  * 
  * 
  * def import_privkey_base64(bytes b64_key, passphrase=b''):             # <<<<<<<<<<<<<<
@@ -3488,7 +3654,7 @@ static PyObject *__pyx_pf_3ssh_3key_2import_privkey_base64(CYTHON_UNUSED PyObjec
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":156
+/* "ssh/key.pyx":158
  * 
  * 
  * def import_privkey_file(filepath, passphrase=b''):             # <<<<<<<<<<<<<<
@@ -3537,7 +3703,7 @@ static PyObject *__pyx_pw_3ssh_3key_5import_privkey_file(PyObject *__pyx_self, P
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_privkey_file") < 0)) __PYX_ERR(0, 156, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_privkey_file") < 0)) __PYX_ERR(0, 158, __pyx_L3_error)
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -3553,7 +3719,7 @@ static PyObject *__pyx_pw_3ssh_3key_5import_privkey_file(PyObject *__pyx_self, P
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("import_privkey_file", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 156, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("import_privkey_file", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 158, __pyx_L3_error)
   __pyx_L3_error:;
   __Pyx_AddTraceback("ssh.key.import_privkey_file", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -3585,19 +3751,19 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("import_privkey_file", 0);
 
-  /* "ssh/key.pyx":158
+  /* "ssh/key.pyx":160
  * def import_privkey_file(filepath, passphrase=b''):
  *     cdef bytes b_passphrase
  *     cdef bytes b_filepath = to_bytes(filepath)             # <<<<<<<<<<<<<<
  *     cdef const_char *c_passphrase = NULL
  *     cdef const_char *c_filepath = b_filepath
  */
-  __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_filepath); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 158, __pyx_L1_error)
+  __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_filepath); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 160, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_b_filepath = ((PyObject*)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "ssh/key.pyx":159
+  /* "ssh/key.pyx":161
  *     cdef bytes b_passphrase
  *     cdef bytes b_filepath = to_bytes(filepath)
  *     cdef const_char *c_passphrase = NULL             # <<<<<<<<<<<<<<
@@ -3606,7 +3772,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
  */
   __pyx_v_c_passphrase = NULL;
 
-  /* "ssh/key.pyx":160
+  /* "ssh/key.pyx":162
  *     cdef bytes b_filepath = to_bytes(filepath)
  *     cdef const_char *c_passphrase = NULL
  *     cdef const_char *c_filepath = b_filepath             # <<<<<<<<<<<<<<
@@ -3615,12 +3781,12 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
  */
   if (unlikely(__pyx_v_b_filepath == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-    __PYX_ERR(0, 160, __pyx_L1_error)
+    __PYX_ERR(0, 162, __pyx_L1_error)
   }
-  __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_filepath); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 160, __pyx_L1_error)
+  __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_filepath); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 162, __pyx_L1_error)
   __pyx_v_c_filepath = __pyx_t_2;
 
-  /* "ssh/key.pyx":164
+  /* "ssh/key.pyx":166
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -3631,19 +3797,19 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
   __pyx_t_4 = (__pyx_t_3 != 0);
   if (__pyx_t_4) {
 
-    /* "ssh/key.pyx":165
+    /* "ssh/key.pyx":167
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:
  *         b_passphrase = to_bytes(passphrase)             # <<<<<<<<<<<<<<
  *         c_passphrase = b_passphrase
  *     with nogil:
  */
-    __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 165, __pyx_L1_error)
+    __pyx_t_1 = __pyx_f_3ssh_5utils_to_bytes(__pyx_v_passphrase); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 167, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_v_b_passphrase = ((PyObject*)__pyx_t_1);
     __pyx_t_1 = 0;
 
-    /* "ssh/key.pyx":166
+    /* "ssh/key.pyx":168
  *     if passphrase is not None:
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase             # <<<<<<<<<<<<<<
@@ -3652,12 +3818,12 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
  */
     if (unlikely(__pyx_v_b_passphrase == Py_None)) {
       PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-      __PYX_ERR(0, 166, __pyx_L1_error)
+      __PYX_ERR(0, 168, __pyx_L1_error)
     }
-    __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 166, __pyx_L1_error)
+    __pyx_t_2 = __Pyx_PyBytes_AsString(__pyx_v_b_passphrase); if (unlikely((!__pyx_t_2) && PyErr_Occurred())) __PYX_ERR(0, 168, __pyx_L1_error)
     __pyx_v_c_passphrase = __pyx_t_2;
 
-    /* "ssh/key.pyx":164
+    /* "ssh/key.pyx":166
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     if passphrase is not None:             # <<<<<<<<<<<<<<
@@ -3666,7 +3832,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
  */
   }
 
-  /* "ssh/key.pyx":167
+  /* "ssh/key.pyx":169
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3681,7 +3847,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":168
+        /* "ssh/key.pyx":170
  *         c_passphrase = b_passphrase
  *     with nogil:
  *         rc = c_ssh.ssh_pki_import_privkey_file(             # <<<<<<<<<<<<<<
@@ -3691,7 +3857,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
         __pyx_v_rc = ssh_pki_import_privkey_file(__pyx_v_c_filepath, __pyx_v_c_passphrase, NULL, NULL, (&__pyx_v__key));
       }
 
-      /* "ssh/key.pyx":167
+      /* "ssh/key.pyx":169
  *         b_passphrase = to_bytes(passphrase)
  *         c_passphrase = b_passphrase
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3710,7 +3876,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
       }
   }
 
-  /* "ssh/key.pyx":170
+  /* "ssh/key.pyx":172
  *         rc = c_ssh.ssh_pki_import_privkey_file(
  *             c_filepath, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3720,20 +3886,20 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
   __pyx_t_4 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_4)) {
 
-    /* "ssh/key.pyx":171
+    /* "ssh/key.pyx":173
  *             c_filepath, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError             # <<<<<<<<<<<<<<
  *     key = SSHKey.from_ptr(_key)
  *     return key
  */
-    __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 171, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_1, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 173, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_Raise(__pyx_t_1, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    __PYX_ERR(0, 171, __pyx_L1_error)
+    __PYX_ERR(0, 173, __pyx_L1_error)
 
-    /* "ssh/key.pyx":170
+    /* "ssh/key.pyx":172
  *         rc = c_ssh.ssh_pki_import_privkey_file(
  *             c_filepath, c_passphrase, NULL, NULL, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3742,19 +3908,19 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
  */
   }
 
-  /* "ssh/key.pyx":172
+  /* "ssh/key.pyx":174
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)             # <<<<<<<<<<<<<<
  *     return key
  * 
  */
-  __pyx_t_1 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 172, __pyx_L1_error)
+  __pyx_t_1 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 174, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_key = ((struct __pyx_obj_3ssh_3key_SSHKey *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "ssh/key.pyx":173
+  /* "ssh/key.pyx":175
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)
  *     return key             # <<<<<<<<<<<<<<
@@ -3766,7 +3932,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
   __pyx_r = ((PyObject *)__pyx_v_key);
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":156
+  /* "ssh/key.pyx":158
  * 
  * 
  * def import_privkey_file(filepath, passphrase=b''):             # <<<<<<<<<<<<<<
@@ -3788,7 +3954,7 @@ static PyObject *__pyx_pf_3ssh_3key_4import_privkey_file(CYTHON_UNUSED PyObject
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":176
+/* "ssh/key.pyx":178
  * 
  * 
  * def import_pubkey_base64(bytes b64_key, KeyType key_type):             # <<<<<<<<<<<<<<
@@ -3832,11 +3998,11 @@ static PyObject *__pyx_pw_3ssh_3key_7import_pubkey_base64(PyObject *__pyx_self,
         case  1:
         if (likely((values[1] = __Pyx_PyDict_GetItemStr(__pyx_kwds, __pyx_n_s_key_type)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("import_pubkey_base64", 1, 2, 2, 1); __PYX_ERR(0, 176, __pyx_L3_error)
+          __Pyx_RaiseArgtupleInvalid("import_pubkey_base64", 1, 2, 2, 1); __PYX_ERR(0, 178, __pyx_L3_error)
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_pubkey_base64") < 0)) __PYX_ERR(0, 176, __pyx_L3_error)
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "import_pubkey_base64") < 0)) __PYX_ERR(0, 178, __pyx_L3_error)
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
       goto __pyx_L5_argtuple_error;
@@ -3849,14 +4015,14 @@ static PyObject *__pyx_pw_3ssh_3key_7import_pubkey_base64(PyObject *__pyx_self,
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("import_pubkey_base64", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 176, __pyx_L3_error)
+  __Pyx_RaiseArgtupleInvalid("import_pubkey_base64", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); __PYX_ERR(0, 178, __pyx_L3_error)
   __pyx_L3_error:;
   __Pyx_AddTraceback("ssh.key.import_pubkey_base64", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
   return NULL;
   __pyx_L4_argument_unpacking_done:;
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_b64_key), (&PyBytes_Type), 1, "b64_key", 1))) __PYX_ERR(0, 176, __pyx_L1_error)
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_key_type), __pyx_ptype_3ssh_8keytypes_KeyType, 1, "key_type", 0))) __PYX_ERR(0, 176, __pyx_L1_error)
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_b64_key), (&PyBytes_Type), 1, "b64_key", 1))) __PYX_ERR(0, 178, __pyx_L1_error)
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_key_type), __pyx_ptype_3ssh_8keytypes_KeyType, 1, "key_type", 0))) __PYX_ERR(0, 178, __pyx_L1_error)
   __pyx_r = __pyx_pf_3ssh_3key_6import_pubkey_base64(__pyx_self, __pyx_v_b64_key, __pyx_v_key_type);
 
   /* function exit code */
@@ -3883,7 +4049,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("import_pubkey_base64", 0);
 
-  /* "ssh/key.pyx":177
+  /* "ssh/key.pyx":179
  * 
  * def import_pubkey_base64(bytes b64_key, KeyType key_type):
  *     cdef const_char *c_key = b64_key             # <<<<<<<<<<<<<<
@@ -3892,12 +4058,12 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
  */
   if (unlikely(__pyx_v_b64_key == Py_None)) {
     PyErr_SetString(PyExc_TypeError, "expected bytes, NoneType found");
-    __PYX_ERR(0, 177, __pyx_L1_error)
+    __PYX_ERR(0, 179, __pyx_L1_error)
   }
-  __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b64_key); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 177, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyBytes_AsString(__pyx_v_b64_key); if (unlikely((!__pyx_t_1) && PyErr_Occurred())) __PYX_ERR(0, 179, __pyx_L1_error)
   __pyx_v_c_key = __pyx_t_1;
 
-  /* "ssh/key.pyx":181
+  /* "ssh/key.pyx":183
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3912,7 +4078,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
       #endif
       /*try:*/ {
 
-        /* "ssh/key.pyx":182
+        /* "ssh/key.pyx":184
  *     cdef c_ssh.ssh_key _key
  *     with nogil:
  *         rc = c_ssh.ssh_pki_import_pubkey_base64(             # <<<<<<<<<<<<<<
@@ -3922,7 +4088,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
         __pyx_v_rc = ssh_pki_import_pubkey_base64(__pyx_v_c_key, __pyx_v_key_type->_type, (&__pyx_v__key));
       }
 
-      /* "ssh/key.pyx":181
+      /* "ssh/key.pyx":183
  *     cdef SSHKey key
  *     cdef c_ssh.ssh_key _key
  *     with nogil:             # <<<<<<<<<<<<<<
@@ -3941,7 +4107,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
       }
   }
 
-  /* "ssh/key.pyx":184
+  /* "ssh/key.pyx":186
  *         rc = c_ssh.ssh_pki_import_pubkey_base64(
  *             c_key, key_type._type, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3951,20 +4117,20 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
   __pyx_t_2 = ((__pyx_v_rc != SSH_OK) != 0);
   if (unlikely(__pyx_t_2)) {
 
-    /* "ssh/key.pyx":185
+    /* "ssh/key.pyx":187
  *             c_key, key_type._type, &_key)
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError             # <<<<<<<<<<<<<<
  *     key = SSHKey.from_ptr(_key)
  *     return key
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-    __Pyx_GetModuleGlobalName(__pyx_t_3, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 185, __pyx_L1_error)
+    __Pyx_GetModuleGlobalName(__pyx_t_3, __pyx_n_s_KeyImportError); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 187, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_Raise(__pyx_t_3, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __PYX_ERR(0, 185, __pyx_L1_error)
+    __PYX_ERR(0, 187, __pyx_L1_error)
 
-    /* "ssh/key.pyx":184
+    /* "ssh/key.pyx":186
  *         rc = c_ssh.ssh_pki_import_pubkey_base64(
  *             c_key, key_type._type, &_key)
  *     if rc != c_ssh.SSH_OK:             # <<<<<<<<<<<<<<
@@ -3973,19 +4139,19 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
  */
   }
 
-  /* "ssh/key.pyx":186
+  /* "ssh/key.pyx":188
  *     if rc != c_ssh.SSH_OK:
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)             # <<<<<<<<<<<<<<
  *     return key
  * 
  */
-  __pyx_t_3 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 186, __pyx_L1_error)
+  __pyx_t_3 = ((PyObject *)__pyx_f_3ssh_3key_6SSHKey_from_ptr(__pyx_v__key)); if (unlikely(!__pyx_t_3)) __PYX_ERR(0, 188, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_3);
   __pyx_v_key = ((struct __pyx_obj_3ssh_3key_SSHKey *)__pyx_t_3);
   __pyx_t_3 = 0;
 
-  /* "ssh/key.pyx":187
+  /* "ssh/key.pyx":189
  *         raise KeyImportError
  *     key = SSHKey.from_ptr(_key)
  *     return key             # <<<<<<<<<<<<<<
@@ -3997,7 +4163,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
   __pyx_r = ((PyObject *)__pyx_v_key);
   goto __pyx_L0;
 
-  /* "ssh/key.pyx":176
+  /* "ssh/key.pyx":178
  * 
  * 
  * def import_pubkey_base64(bytes b64_key, KeyType key_type):             # <<<<<<<<<<<<<<
@@ -4017,7 +4183,7 @@ static PyObject *__pyx_pf_3ssh_3key_6import_pubkey_base64(CYTHON_UNUSED PyObject
   return __pyx_r;
 }
 
-/* "ssh/key.pyx":190
+/* "ssh/key.pyx":192
  * 
  * 
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-  /* "ssh/key.pyx":202
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+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_3import_privkey_base64, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 139, __pyx_L1_error)
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-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_privkey_base64, __pyx_t_2) < 0) __PYX_ERR(0, 137, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_privkey_base64, __pyx_t_2) < 0) __PYX_ERR(0, 139, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":156
+  /* "ssh/key.pyx":158
  * 
  * 
  * def import_privkey_file(filepath, passphrase=b''):             # <<<<<<<<<<<<<<
  *     cdef bytes b_passphrase
  *     cdef bytes b_filepath = to_bytes(filepath)
  */
-  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_5import_privkey_file, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 156, __pyx_L1_error)
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_5import_privkey_file, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 158, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_privkey_file, __pyx_t_2) < 0) __PYX_ERR(0, 156, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_privkey_file, __pyx_t_2) < 0) __PYX_ERR(0, 158, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":176
+  /* "ssh/key.pyx":178
  * 
  * 
  * def import_pubkey_base64(bytes b64_key, KeyType key_type):             # <<<<<<<<<<<<<<
  *     cdef const_char *c_key = b64_key
  *     cdef int rc
  */
-  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_7import_pubkey_base64, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 176, __pyx_L1_error)
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_7import_pubkey_base64, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 178, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_pubkey_base64, __pyx_t_2) < 0) __PYX_ERR(0, 176, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_pubkey_base64, __pyx_t_2) < 0) __PYX_ERR(0, 178, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "ssh/key.pyx":190
+  /* "ssh/key.pyx":192
  * 
  * 
  * def import_pubkey_file(filepath):             # <<<<<<<<<<<<<<
  *     cdef bytes b_filepath = to_bytes(filepath)
  *     cdef const_char *c_filepath = b_filepath
  */
-  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_9import_pubkey_file, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 190, __pyx_L1_error)
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_9import_pubkey_file, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 192, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_t_2);
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_pubkey_file, __pyx_t_2) < 0) __PYX_ERR(0, 192, __pyx_L1_error)
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+  /* "ssh/key.pyx":207
+ * 
+ * 
+ * def import_cert_base64(bytes b64_cert, KeyType key_type):             # <<<<<<<<<<<<<<
+ *     cdef const_char *c_key = b64_cert
+ *     cdef int rc
+ */
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_11import_cert_base64, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 207, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_t_2);
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_cert_base64, __pyx_t_2) < 0) __PYX_ERR(0, 207, __pyx_L1_error)
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+  /* "ssh/key.pyx":221
+ * 
+ * 
+ * def import_cert_file(filepath):             # <<<<<<<<<<<<<<
+ *     cdef bytes b_filepath = to_bytes(filepath)
+ *     cdef const_char *c_filepath = b_filepath
+ */
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_13import_cert_file, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 221, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_t_2);
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_cert_file, __pyx_t_2) < 0) __PYX_ERR(0, 221, __pyx_L1_error)
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+  /* "ssh/key.pyx":236
+ * 
+ * 
+ * def copy_cert_to_privkey(SSHKey cert_key, SSHKey priv_key):             # <<<<<<<<<<<<<<
+ *     if priv_key.is_private() is False:
+ *         raise KeyImportError
+ */
+  __pyx_t_2 = PyCFunction_NewEx(&__pyx_mdef_3ssh_3key_15copy_cert_to_privkey, NULL, __pyx_n_s_ssh_key); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 236, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_2);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_import_pubkey_file, __pyx_t_2) < 0) __PYX_ERR(0, 190, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_copy_cert_to_privkey, __pyx_t_2) < 0) __PYX_ERR(0, 236, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
   /* "ssh/key.pyx":1
@@ -5504,6 +6446,230 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg
 }
 #endif
 
+/* PyFunctionFastCall */
+#if CYTHON_FAST_PYCALL
+static PyObject* __Pyx_PyFunction_FastCallNoKw(PyCodeObject *co, PyObject **args, Py_ssize_t na,
+                                               PyObject *globals) {
+    PyFrameObject *f;
+    PyThreadState *tstate = __Pyx_PyThreadState_Current;
+    PyObject **fastlocals;
+    Py_ssize_t i;
+    PyObject *result;
+    assert(globals != NULL);
+    /* XXX Perhaps we should create a specialized
+       PyFrame_New() that doesn't take locals, but does
+       take builtins without sanity checking them.
+       */
+    assert(tstate != NULL);
+    f = PyFrame_New(tstate, co, globals, NULL);
+    if (f == NULL) {
+        return NULL;
+    }
+    fastlocals = __Pyx_PyFrame_GetLocalsplus(f);
+    for (i = 0; i < na; i++) {
+        Py_INCREF(*args);
+        fastlocals[i] = *args++;
+    }
+    result = PyEval_EvalFrameEx(f,0);
+    ++tstate->recursion_depth;
+    Py_DECREF(f);
+    --tstate->recursion_depth;
+    return result;
+}
+#if 1 || PY_VERSION_HEX < 0x030600B1
+static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs) {
+    PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
+    PyObject *globals = PyFunction_GET_GLOBALS(func);
+    PyObject *argdefs = PyFunction_GET_DEFAULTS(func);
+    PyObject *closure;
+#if PY_MAJOR_VERSION >= 3
+    PyObject *kwdefs;
+#endif
+    PyObject *kwtuple, **k;
+    PyObject **d;
+    Py_ssize_t nd;
+    Py_ssize_t nk;
+    PyObject *result;
+    assert(kwargs == NULL || PyDict_Check(kwargs));
+    nk = kwargs ? PyDict_Size(kwargs) : 0;
+    if (Py_EnterRecursiveCall((char*)" while calling a Python object")) {
+        return NULL;
+    }
+    if (
+#if PY_MAJOR_VERSION >= 3
+            co->co_kwonlyargcount == 0 &&
+#endif
+            likely(kwargs == NULL || nk == 0) &&
+            co->co_flags == (CO_OPTIMIZED | CO_NEWLOCALS | CO_NOFREE)) {
+        if (argdefs == NULL && co->co_argcount == nargs) {
+            result = __Pyx_PyFunction_FastCallNoKw(co, args, nargs, globals);
+            goto done;
+        }
+        else if (nargs == 0 && argdefs != NULL
+                 && co->co_argcount == Py_SIZE(argdefs)) {
+            /* function called with no arguments, but all parameters have
+               a default value: use default values as arguments .*/
+            args = &PyTuple_GET_ITEM(argdefs, 0);
+            result =__Pyx_PyFunction_FastCallNoKw(co, args, Py_SIZE(argdefs), globals);
+            goto done;
+        }
+    }
+    if (kwargs != NULL) {
+        Py_ssize_t pos, i;
+        kwtuple = PyTuple_New(2 * nk);
+        if (kwtuple == NULL) {
+            result = NULL;
+            goto done;
+        }
+        k = &PyTuple_GET_ITEM(kwtuple, 0);
+        pos = i = 0;
+        while (PyDict_Next(kwargs, &pos, &k[i], &k[i+1])) {
+            Py_INCREF(k[i]);
+            Py_INCREF(k[i+1]);
+            i += 2;
+        }
+        nk = i / 2;
+    }
+    else {
+        kwtuple = NULL;
+        k = NULL;
+    }
+    closure = PyFunction_GET_CLOSURE(func);
+#if PY_MAJOR_VERSION >= 3
+    kwdefs = PyFunction_GET_KW_DEFAULTS(func);
+#endif
+    if (argdefs != NULL) {
+        d = &PyTuple_GET_ITEM(argdefs, 0);
+        nd = Py_SIZE(argdefs);
+    }
+    else {
+        d = NULL;
+        nd = 0;
+    }
+#if PY_MAJOR_VERSION >= 3
+    result = PyEval_EvalCodeEx((PyObject*)co, globals, (PyObject *)NULL,
+                               args, (int)nargs,
+                               k, (int)nk,
+                               d, (int)nd, kwdefs, closure);
+#else
+    result = PyEval_EvalCodeEx(co, globals, (PyObject *)NULL,
+                               args, (int)nargs,
+                               k, (int)nk,
+                               d, (int)nd, closure);
+#endif
+    Py_XDECREF(kwtuple);
+done:
+    Py_LeaveRecursiveCall();
+    return result;
+}
+#endif
+#endif
+
+/* PyObjectCallMethO */
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg) {
+    PyObject *self, *result;
+    PyCFunction cfunc;
+    cfunc = PyCFunction_GET_FUNCTION(func);
+    self = PyCFunction_GET_SELF(func);
+    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
+        return NULL;
+    result = cfunc(self, arg);
+    Py_LeaveRecursiveCall();
+    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
+        PyErr_SetString(
+            PyExc_SystemError,
+            "NULL result without error in PyObject_Call");
+    }
+    return result;
+}
+#endif
+
+/* PyObjectCallNoArg */
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
+#if CYTHON_FAST_PYCALL
+    if (PyFunction_Check(func)) {
+        return __Pyx_PyFunction_FastCall(func, NULL, 0);
+    }
+#endif
+#ifdef __Pyx_CyFunction_USED
+    if (likely(PyCFunction_Check(func) || __Pyx_CyFunction_Check(func)))
+#else
+    if (likely(PyCFunction_Check(func)))
+#endif
+    {
+        if (likely(PyCFunction_GET_FLAGS(func) & METH_NOARGS)) {
+            return __Pyx_PyObject_CallMethO(func, NULL);
+        }
+    }
+    return __Pyx_PyObject_Call(func, __pyx_empty_tuple, NULL);
+}
+#endif
+
+/* PyCFunctionFastCall */
+#if CYTHON_FAST_PYCCALL
+static CYTHON_INLINE PyObject * __Pyx_PyCFunction_FastCall(PyObject *func_obj, PyObject **args, Py_ssize_t nargs) {
+    PyCFunctionObject *func = (PyCFunctionObject*)func_obj;
+    PyCFunction meth = PyCFunction_GET_FUNCTION(func);
+    PyObject *self = PyCFunction_GET_SELF(func);
+    int flags = PyCFunction_GET_FLAGS(func);
+    assert(PyCFunction_Check(func));
+    assert(METH_FASTCALL == (flags & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)));
+    assert(nargs >= 0);
+    assert(nargs == 0 || args != NULL);
+    /* _PyCFunction_FastCallDict() must not be called with an exception set,
+       because it may clear it (directly or indirectly) and so the
+       caller loses its exception */
+    assert(!PyErr_Occurred());
+    if ((PY_VERSION_HEX < 0x030700A0) || unlikely(flags & METH_KEYWORDS)) {
+        return (*((__Pyx_PyCFunctionFastWithKeywords)(void*)meth)) (self, args, nargs, NULL);
+    } else {
+        return (*((__Pyx_PyCFunctionFast)(void*)meth)) (self, args, nargs);
+    }
+}
+#endif
+
+/* PyObjectCallOneArg */
+#if CYTHON_COMPILING_IN_CPYTHON
+static PyObject* __Pyx__PyObject_CallOneArg(PyObject *func, PyObject *arg) {
+    PyObject *result;
+    PyObject *args = PyTuple_New(1);
+    if (unlikely(!args)) return NULL;
+    Py_INCREF(arg);
+    PyTuple_SET_ITEM(args, 0, arg);
+    result = __Pyx_PyObject_Call(func, args, NULL);
+    Py_DECREF(args);
+    return result;
+}
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
+#if CYTHON_FAST_PYCALL
+    if (PyFunction_Check(func)) {
+        return __Pyx_PyFunction_FastCall(func, &arg, 1);
+    }
+#endif
+    if (likely(PyCFunction_Check(func))) {
+        if (likely(PyCFunction_GET_FLAGS(func) & METH_O)) {
+            return __Pyx_PyObject_CallMethO(func, arg);
+#if CYTHON_FAST_PYCCALL
+        } else if (PyCFunction_GET_FLAGS(func) & METH_FASTCALL) {
+            return __Pyx_PyCFunction_FastCall(func, &arg, 1);
+#endif
+        }
+    }
+    return __Pyx__PyObject_CallOneArg(func, arg);
+}
+#else
+static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
+    PyObject *result;
+    PyObject *args = PyTuple_Pack(1, arg);
+    if (unlikely(!args)) return NULL;
+    result = __Pyx_PyObject_Call(func, args, NULL);
+    Py_DECREF(args);
+    return result;
+}
+#endif
+
 /* PyObject_GenericGetAttrNoDict */
 #if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
 static PyObject *__Pyx_RaiseGenericGetAttributeError(PyTypeObject *tp, PyObject *attr_name) {
diff --git a/ssh/key.pyx b/ssh/key.pyx
index 0fa9357..4bc2665 100644
--- a/ssh/key.pyx
+++ b/ssh/key.pyx
@@ -69,8 +69,9 @@ cdef class SSHKey:
 
     def key_type(self):
         cdef c_ssh.ssh_keytypes_e _type
-        with nogil:
-            _type = c_ssh.ssh_key_type(self._key)
+        if self._key is NULL:
+            return
+        _type = c_ssh.ssh_key_type(self._key)
         return from_keytype(_type)
 
     def ecdsa_name(self):
@@ -200,3 +201,44 @@ def import_pubkey_file(filepath):
         raise KeyImportError
     key = SSHKey.from_ptr(_key)
     return key
+
+
+def import_cert_base64(bytes b64_cert, KeyType key_type):
+    cdef const_char *c_key = b64_cert
+    cdef int rc
+    cdef SSHKey key
+    cdef c_ssh.ssh_key _key
+    with nogil:
+        rc = c_ssh.ssh_pki_import_cert_base64(
+            c_key, key_type._type, &_key)
+    if rc != c_ssh.SSH_OK:
+        raise KeyImportError
+    key = SSHKey.from_ptr(_key)
+    return key
+
+
+def import_cert_file(filepath):
+    cdef bytes b_filepath = to_bytes(filepath)
+    cdef const_char *c_filepath = b_filepath
+    cdef int rc
+    cdef SSHKey key
+    cdef c_ssh.ssh_key _key
+    with nogil:
+        rc = c_ssh.ssh_pki_import_cert_file(
+            c_filepath, &_key)
+    if rc != c_ssh.SSH_OK:
+        raise KeyImportError
+    key = SSHKey.from_ptr(_key)
+    return key
+
+
+def copy_cert_to_privkey(SSHKey cert_key, SSHKey priv_key):
+    if priv_key.is_private() is False:
+        raise KeyImportError
+    cdef c_ssh.ssh_key _priv_key = priv_key._key
+    cdef c_ssh.ssh_key _cert_key = cert_key._key
+    with nogil:
+        rc = c_ssh.ssh_pki_copy_cert_to_privkey(
+            _cert_key, _priv_key)
+    if rc != c_ssh.SSH_OK:
+        raise KeyImportError
diff --git a/ssh/keytypes.c b/ssh/keytypes.c
index 1c76f31..b08696a 100644
--- a/ssh/keytypes.c
+++ b/ssh/keytypes.c
@@ -818,8 +818,8 @@ static const char *__pyx_filename;
 
 
 static const char *__pyx_f[] = {
-  "ssh/keytypes.pyx",
   "stringsource",
+  "ssh/keytypes.pyx",
 };
 /* NoFastGil.proto */
 #define __Pyx_PyGILState_Ensure PyGILState_Ensure
@@ -842,6 +842,13 @@ struct __pyx_obj_3ssh_8keytypes_RSA1Key;
 struct __pyx_obj_3ssh_8keytypes_ECDSAKey;
 struct __pyx_obj_3ssh_8keytypes_DSSCert01Key;
 struct __pyx_obj_3ssh_8keytypes_RSACert01Key;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01;
+struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01;
 struct __pyx_obj_3ssh_8keytypes_UnknownKey;
 
 /* "ssh/keytypes.pxd":20
@@ -929,7 +936,91 @@ struct __pyx_obj_3ssh_8keytypes_RSACert01Key {
 };
 
 
-/* "ssh/keytypes.pyx":42
+/* "ssh/keytypes.pxd":48
+ * 
+ * 
+ * cdef class ECDSA_P256(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":52
+ * 
+ * 
+ * cdef class ECDSA_P384(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":56
+ * 
+ * 
+ * cdef class ECDSA_P521(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":60
+ * 
+ * 
+ * cdef class ECDSA_P256_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":64
+ * 
+ * 
+ * cdef class ECDSA_P384_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":68
+ * 
+ * 
+ * cdef class ECDSA_P521_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pxd":72
+ * 
+ * 
+ * cdef class ED25519_CERT01(KeyType):             # <<<<<<<<<<<<<<
+ *     pass
+ * 
+ */
+struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01 {
+  struct __pyx_obj_3ssh_8keytypes_KeyType __pyx_base;
+};
+
+
+/* "ssh/keytypes.pyx":45
  * 
  * 
  * cdef class UnknownKey(KeyType):             # <<<<<<<<<<<<<<
@@ -1012,6 +1103,16 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject
 #define __Pyx_PyObject_GetAttrStr(o,n) PyObject_GetAttr(o,n)
 #endif
 
+/* GetBuiltinName.proto */
+static PyObject *__Pyx_GetBuiltinName(PyObject *name);
+
+/* RaiseArgTupleInvalid.proto */
+static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
+    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found);
+
+/* KeywordStringCheck.proto */
+static int __Pyx_CheckKeywordStrings(PyObject *kwdict, const char* function_name, int kw_allowed);
+
 /* PyFunctionFastCall.proto */
 #if CYTHON_FAST_PYCALL
 #define __Pyx_PyFunction_FastCall(func, args, nargs)\
@@ -1064,14 +1165,6 @@ static CYTHON_INLINE PyObject *__Pyx_PyCFunction_FastCall(PyObject *func, PyObje
 /* PyObjectCallOneArg.proto */
 static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg);
 
-/* PyErrExceptionMatches.proto */
-#if CYTHON_FAST_THREAD_STATE
-#define __Pyx_PyErr_ExceptionMatches(err) __Pyx_PyErr_ExceptionMatchesInState(__pyx_tstate, err)
-static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err);
-#else
-#define __Pyx_PyErr_ExceptionMatches(err)  PyErr_ExceptionMatches(err)
-#endif
-
 /* PyThreadStateGet.proto */
 #if CYTHON_FAST_THREAD_STATE
 #define __Pyx_PyThreadState_declare  PyThreadState *__pyx_tstate;
@@ -1108,14 +1201,39 @@ static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject
 #define __Pyx_ErrFetch(type, value, tb)  PyErr_Fetch(type, value, tb)
 #endif
 
-/* GetAttr.proto */
-static CYTHON_INLINE PyObject *__Pyx_GetAttr(PyObject *, PyObject *);
+/* RaiseException.proto */
+static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause);
 
-/* GetAttr3.proto */
-static CYTHON_INLINE PyObject *__Pyx_GetAttr3(PyObject *, PyObject *, PyObject *);
+/* ExtTypeTest.proto */
+static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type);
 
-/* GetBuiltinName.proto */
-static PyObject *__Pyx_GetBuiltinName(PyObject *name);
+/* PyObject_GenericGetAttrNoDict.proto */
+#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
+static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name);
+#else
+#define __Pyx_PyObject_GenericGetAttrNoDict PyObject_GenericGetAttr
+#endif
+
+/* PyObject_GenericGetAttr.proto */
+#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
+static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name);
+#else
+#define __Pyx_PyObject_GenericGetAttr PyObject_GenericGetAttr
+#endif
+
+/* PyErrExceptionMatches.proto */
+#if CYTHON_FAST_THREAD_STATE
+#define __Pyx_PyErr_ExceptionMatches(err) __Pyx_PyErr_ExceptionMatchesInState(__pyx_tstate, err)
+static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err);
+#else
+#define __Pyx_PyErr_ExceptionMatches(err)  PyErr_ExceptionMatches(err)
+#endif
+
+/* PyObjectGetAttrStrNoError.proto */
+static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStrNoError(PyObject* obj, PyObject* attr_name);
+
+/* SetupReduce.proto */
+static int __Pyx_setup_reduce(PyObject* type_obj);
 
 /* PyDictVersioning.proto */
 #if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
@@ -1143,77 +1261,6 @@ static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UIN
 #define __PYX_PY_DICT_LOOKUP_IF_MODIFIED(VAR, DICT, LOOKUP)  (VAR) = (LOOKUP);
 #endif
 
-/* GetModuleGlobalName.proto */
-#if CYTHON_USE_DICT_VERSIONS
-#define __Pyx_GetModuleGlobalName(var, name)  {\
-    static PY_UINT64_T __pyx_dict_version = 0;\
-    static PyObject *__pyx_dict_cached_value = NULL;\
-    (var) = (likely(__pyx_dict_version == __PYX_GET_DICT_VERSION(__pyx_d))) ?\
-        (likely(__pyx_dict_cached_value) ? __Pyx_NewRef(__pyx_dict_cached_value) : __Pyx_GetBuiltinName(name)) :\
-        __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  {\
-    PY_UINT64_T __pyx_dict_version;\
-    PyObject *__pyx_dict_cached_value;\
-    (var) = __Pyx__GetModuleGlobalName(name, &__pyx_dict_version, &__pyx_dict_cached_value);\
-}
-static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value);
-#else
-#define __Pyx_GetModuleGlobalName(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
-#define __Pyx_GetModuleGlobalNameUncached(var, name)  (var) = __Pyx__GetModuleGlobalName(name)
-static CYTHON_INLINE PyObject *__Pyx__GetModuleGlobalName(PyObject *name);
-#endif
-
-/* PyObjectCall2Args.proto */
-static CYTHON_UNUSED PyObject* __Pyx_PyObject_Call2Args(PyObject* function, PyObject* arg1, PyObject* arg2);
-
-/* ExtTypeTest.proto */
-static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type);
-
-/* RaiseException.proto */
-static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause);
-
-/* RaiseArgTupleInvalid.proto */
-static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
-    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found);
-
-/* RaiseDoubleKeywords.proto */
-static void __Pyx_RaiseDoubleKeywordsError(const char* func_name, PyObject* kw_name);
-
-/* ParseKeywords.proto */
-static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],\
-    PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args,\
-    const char* function_name);
-
-/* Import.proto */
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level);
-
-/* ImportFrom.proto */
-static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name);
-
-/* HasAttr.proto */
-static CYTHON_INLINE int __Pyx_HasAttr(PyObject *, PyObject *);
-
-/* PyObject_GenericGetAttrNoDict.proto */
-#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
-static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name);
-#else
-#define __Pyx_PyObject_GenericGetAttrNoDict PyObject_GenericGetAttr
-#endif
-
-/* PyObject_GenericGetAttr.proto */
-#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
-static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name);
-#else
-#define __Pyx_PyObject_GenericGetAttr PyObject_GenericGetAttr
-#endif
-
-/* PyObjectGetAttrStrNoError.proto */
-static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStrNoError(PyObject* obj, PyObject* attr_name);
-
-/* SetupReduce.proto */
-static int __Pyx_setup_reduce(PyObject* type_obj);
-
 /* CLineInTraceback.proto */
 #ifdef CYTHON_CLINE_IN_TRACEBACK
 #define __Pyx_CLineForTraceback(tstate, c_line)  (((CYTHON_CLINE_IN_TRACEBACK)) ? c_line : 0)
@@ -1243,18 +1290,15 @@ static void __Pyx_AddTraceback(const char *funcname, int c_line,
 /* CIntToPy.proto */
 static CYTHON_INLINE PyObject* __Pyx_PyInt_From_enum__ssh_keytypes_e(enum ssh_keytypes_e value);
 
+/* CIntFromPy.proto */
+static CYTHON_INLINE char __Pyx_PyInt_As_char(PyObject *);
+
 /* CIntToPy.proto */
 static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value);
 
-/* CIntFromPy.proto */
-static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyObject *);
-
 /* CIntFromPy.proto */
 static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *);
 
-/* CIntFromPy.proto */
-static CYTHON_INLINE char __Pyx_PyInt_As_char(PyObject *);
-
 /* CIntFromPy.proto */
 static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *);
 
@@ -1306,105 +1350,83 @@ static PyTypeObject *__pyx_ptype_3ssh_8keytypes_RSA1Key = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSAKey = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_DSSCert01Key = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_RSACert01Key = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P256 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P384 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P521 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P256_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P384_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ECDSA_P521_CERT01 = 0;
+static PyTypeObject *__pyx_ptype_3ssh_8keytypes_ED25519_CERT01 = 0;
 static PyTypeObject *__pyx_ptype_3ssh_8keytypes_UnknownKey = 0;
 static struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_f_3ssh_8keytypes_from_keytype(enum ssh_keytypes_e); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_KeyType__set_state(struct __pyx_obj_3ssh_8keytypes_KeyType *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_UnknownKey__set_state(struct __pyx_obj_3ssh_8keytypes_UnknownKey *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_DSSKey__set_state(struct __pyx_obj_3ssh_8keytypes_DSSKey *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_RSAKey__set_state(struct __pyx_obj_3ssh_8keytypes_RSAKey *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_RSA1Key__set_state(struct __pyx_obj_3ssh_8keytypes_RSA1Key *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_ECDSAKey__set_state(struct __pyx_obj_3ssh_8keytypes_ECDSAKey *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_DSSCert01Key__set_state(struct __pyx_obj_3ssh_8keytypes_DSSCert01Key *, PyObject *); /*proto*/
-static PyObject *__pyx_f_3ssh_8keytypes___pyx_unpickle_RSACert01Key__set_state(struct __pyx_obj_3ssh_8keytypes_RSACert01Key *, PyObject *); /*proto*/
 #define __Pyx_MODULE_NAME "ssh.keytypes"
 extern int __pyx_module_is_main_ssh__keytypes;
 int __pyx_module_is_main_ssh__keytypes = 0;
 
 /* Implementation of 'ssh.keytypes' */
-static const char __pyx_k_new[] = "__new__";
+static PyObject *__pyx_builtin_TypeError;
 static const char __pyx_k_str[] = "__str__";
-static const char __pyx_k_dict[] = "__dict__";
 static const char __pyx_k_main[] = "__main__";
 static const char __pyx_k_name[] = "__name__";
 static const char __pyx_k_test[] = "__test__";
 static const char __pyx_k_type[] = "_type";
 static const char __pyx_k_DSSKey[] = "DSSKey";
 static const char __pyx_k_RSAKey[] = "RSAKey";
-static const char __pyx_k_import[] = "__import__";
-static const char __pyx_k_pickle[] = "pickle";
 static const char __pyx_k_reduce[] = "__reduce__";
-static const char __pyx_k_update[] = "update";
 static const char __pyx_k_KeyType[] = "KeyType";
 static const char __pyx_k_RSA1Key[] = "RSA1Key";
 static const char __pyx_k_ECDSAKey[] = "ECDSAKey";
 static const char __pyx_k_getstate[] = "__getstate__";
 static const char __pyx_k_key_name[] = "key_name";
-static const char __pyx_k_pyx_type[] = "__pyx_type";
 static const char __pyx_k_setstate[] = "__setstate__";
-static const char __pyx_k_pyx_state[] = "__pyx_state";
+static const char __pyx_k_TypeError[] = "TypeError";
 static const char __pyx_k_reduce_ex[] = "__reduce_ex__";
+static const char __pyx_k_ECDSA_P256[] = "ECDSA_P256";
+static const char __pyx_k_ECDSA_P384[] = "ECDSA_P384";
+static const char __pyx_k_ECDSA_P521[] = "ECDSA_P521";
 static const char __pyx_k_UnknownKey[] = "UnknownKey";
 static const char __pyx_k_b_key_name[] = "b_key_name";
 static const char __pyx_k_key_name_2[] = "_key_name";
-static const char __pyx_k_pyx_result[] = "__pyx_result";
-static const char __pyx_k_PickleError[] = "PickleError";
 static const char __pyx_k_DSSCert01Key[] = "DSSCert01Key";
 static const char __pyx_k_RSACert01Key[] = "RSACert01Key";
-static const char __pyx_k_pyx_checksum[] = "__pyx_checksum";
 static const char __pyx_k_ssh_keytypes[] = "ssh.keytypes";
-static const char __pyx_k_stringsource[] = "stringsource";
 static const char __pyx_k_reduce_cython[] = "__reduce_cython__";
-static const char __pyx_k_pyx_PickleError[] = "__pyx_PickleError";
+static const char __pyx_k_ED25519_CERT01[] = "ED25519_CERT01";
 static const char __pyx_k_setstate_cython[] = "__setstate_cython__";
 static const char __pyx_k_ssh_keytypes_pyx[] = "ssh/keytypes.pyx";
+static const char __pyx_k_ECDSA_P256_CERT01[] = "ECDSA_P256_CERT01";
+static const char __pyx_k_ECDSA_P384_CERT01[] = "ECDSA_P384_CERT01";
+static const char __pyx_k_ECDSA_P521_CERT01[] = "ECDSA_P521_CERT01";
 static const char __pyx_k_Unknown_keytype_s[] = "Unknown keytype %s";
 static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
 static const char __pyx_k_key_type_from_name[] = "key_type_from_name";
-static const char __pyx_k_pyx_unpickle_DSSKey[] = "__pyx_unpickle_DSSKey";
-static const char __pyx_k_pyx_unpickle_RSAKey[] = "__pyx_unpickle_RSAKey";
-static const char __pyx_k_pyx_unpickle_KeyType[] = "__pyx_unpickle_KeyType";
-static const char __pyx_k_pyx_unpickle_RSA1Key[] = "__pyx_unpickle_RSA1Key";
-static const char __pyx_k_pyx_unpickle_ECDSAKey[] = "__pyx_unpickle_ECDSAKey";
-static const char __pyx_k_pyx_unpickle_UnknownKey[] = "__pyx_unpickle_UnknownKey";
-static const char __pyx_k_pyx_unpickle_DSSCert01Key[] = "__pyx_unpickle_DSSCert01Key";
-static const char __pyx_k_pyx_unpickle_RSACert01Key[] = "__pyx_unpickle_RSACert01Key";
-static const char __pyx_k_Incompatible_checksums_s_vs_0x12[] = "Incompatible checksums (%s vs 0x12dfdbc = (_type))";
+static const char __pyx_k_no_default___reduce___due_to_non[] = "no default __reduce__ due to non-trivial __cinit__";
 static PyObject *__pyx_n_s_DSSCert01Key;
 static PyObject *__pyx_n_s_DSSKey;
 static PyObject *__pyx_n_s_ECDSAKey;
-static PyObject *__pyx_kp_s_Incompatible_checksums_s_vs_0x12;
+static PyObject *__pyx_n_s_ECDSA_P256;
+static PyObject *__pyx_n_s_ECDSA_P256_CERT01;
+static PyObject *__pyx_n_s_ECDSA_P384;
+static PyObject *__pyx_n_s_ECDSA_P384_CERT01;
+static PyObject *__pyx_n_s_ECDSA_P521;
+static PyObject *__pyx_n_s_ECDSA_P521_CERT01;
+static PyObject *__pyx_n_s_ED25519_CERT01;
 static PyObject *__pyx_n_s_KeyType;
-static PyObject *__pyx_n_s_PickleError;
 static PyObject *__pyx_n_s_RSA1Key;
 static PyObject *__pyx_n_s_RSACert01Key;
 static PyObject *__pyx_n_s_RSAKey;
+static PyObject *__pyx_n_s_TypeError;
 static PyObject *__pyx_n_s_UnknownKey;
 static PyObject *__pyx_kp_s_Unknown_keytype_s;
 static PyObject *__pyx_n_s_b_key_name;
 static PyObject *__pyx_n_s_cline_in_traceback;
-static PyObject *__pyx_n_s_dict;
 static PyObject *__pyx_n_s_getstate;
-static PyObject *__pyx_n_s_import;
 static PyObject *__pyx_n_s_key_name;
 static PyObject *__pyx_n_s_key_name_2;
 static PyObject *__pyx_n_s_key_type_from_name;
 static PyObject *__pyx_n_s_main;
 static PyObject *__pyx_n_s_name;
-static PyObject *__pyx_n_s_new;
-static PyObject *__pyx_n_s_pickle;
-static PyObject *__pyx_n_s_pyx_PickleError;
-static PyObject *__pyx_n_s_pyx_checksum;
-static PyObject *__pyx_n_s_pyx_result;
-static PyObject *__pyx_n_s_pyx_state;
-static PyObject *__pyx_n_s_pyx_type;
-static PyObject *__pyx_n_s_pyx_unpickle_DSSCert01Key;
-static PyObject *__pyx_n_s_pyx_unpickle_DSSKey;
-static PyObject *__pyx_n_s_pyx_unpickle_ECDSAKey;
-static PyObject *__pyx_n_s_pyx_unpickle_KeyType;
-static PyObject *__pyx_n_s_pyx_unpickle_RSA1Key;
-static PyObject *__pyx_n_s_pyx_unpickle_RSACert01Key;
-static PyObject *__pyx_n_s_pyx_unpickle_RSAKey;
-static PyObject *__pyx_n_s_pyx_unpickle_UnknownKey;
+static PyObject *__pyx_kp_s_no_default___reduce___due_to_non;
 static PyObject *__pyx_n_s_reduce;
 static PyObject *__pyx_n_s_reduce_cython;
 static PyObject *__pyx_n_s_reduce_ex;
@@ -1413,38 +1435,44 @@ static PyObject *__pyx_n_s_setstate_cython;
 static PyObject *__pyx_n_s_ssh_keytypes;
 static PyObject *__pyx_kp_s_ssh_keytypes_pyx;
 static PyObject *__pyx_n_s_str;
-static PyObject *__pyx_kp_s_stringsource;
 static PyObject *__pyx_n_s_test;
 static PyObject *__pyx_n_s_type;
-static PyObject *__pyx_n_s_update;
+static int __pyx_pf_3ssh_8keytypes_7KeyType___cinit__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_5value___get__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType___str__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_2__repr__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_4__reduce_cython__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_6__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_10UnknownKey___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_UnknownKey *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_10UnknownKey_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_UnknownKey *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_6DSSKey___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_DSSKey *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_6DSSKey_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_DSSKey *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_6RSAKey___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_RSAKey *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_6RSAKey_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_RSAKey *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7RSA1Key___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_RSA1Key *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_7RSA1Key_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_RSA1Key *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_8ECDSAKey___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_ECDSAKey *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_8ECDSAKey_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_ECDSAKey *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_12DSSCert01Key___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_DSSCert01Key *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_12DSSCert01Key_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_DSSCert01Key *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_12RSACert01Key___reduce_cython__(struct __pyx_obj_3ssh_8keytypes_RSACert01Key *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_12RSACert01Key_2__setstate_cython__(struct __pyx_obj_3ssh_8keytypes_RSACert01Key *__pyx_v_self, PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_2__str__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_4__repr__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_6__reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7KeyType_8__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10UnknownKey___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_UnknownKey *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10UnknownKey_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_UnknownKey *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_6DSSKey___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_DSSKey *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_6DSSKey_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_DSSKey *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_6RSAKey___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSAKey *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_6RSAKey_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSAKey *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7RSA1Key___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSA1Key *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_7RSA1Key_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSA1Key *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_8ECDSAKey___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSAKey *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_8ECDSAKey_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSAKey *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_12DSSCert01Key___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_DSSCert01Key *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_12DSSCert01Key_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_DSSCert01Key *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static int __pyx_pf_3ssh_8keytypes_12RSACert01Key___cinit__(struct __pyx_obj_3ssh_8keytypes_RSACert01Key *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_12RSACert01Key_2__reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSACert01Key *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_12RSACert01Key_4__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_RSACert01Key *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P256___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P256 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P256_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P256 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P384___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P384 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P384_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P384 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P521___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P521 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_10ECDSA_P521_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P521 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P256_CERT01___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P256_CERT01_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P384_CERT01___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P384_CERT01_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P521_CERT01___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_17ECDSA_P521_CERT01_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_14ED25519_CERT01___reduce_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01 *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3ssh_8keytypes_14ED25519_CERT01_2__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01 *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
 static PyObject *__pyx_pf_3ssh_8keytypes_key_type_from_name(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_key_name); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_2__pyx_unpickle_KeyType(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_4__pyx_unpickle_UnknownKey(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_6__pyx_unpickle_DSSKey(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_8__pyx_unpickle_RSAKey(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_10__pyx_unpickle_RSA1Key(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_12__pyx_unpickle_ECDSAKey(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_14__pyx_unpickle_DSSCert01Key(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
-static PyObject *__pyx_pf_3ssh_8keytypes_16__pyx_unpickle_RSACert01Key(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v___pyx_type, long __pyx_v___pyx_checksum, PyObject *__pyx_v___pyx_state); /* proto */
 static PyObject *__pyx_tp_new_3ssh_8keytypes_KeyType(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_3ssh_8keytypes_DSSKey(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_3ssh_8keytypes_RSAKey(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
@@ -1452,29 +1480,101 @@ static PyObject *__pyx_tp_new_3ssh_8keytypes_RSA1Key(PyTypeObject *t, PyObject *
 static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSAKey(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_3ssh_8keytypes_DSSCert01Key(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_3ssh_8keytypes_RSACert01Key(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P256(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P384(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P521(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P256_CERT01(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P384_CERT01(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P521_CERT01(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ED25519_CERT01(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
 static PyObject *__pyx_tp_new_3ssh_8keytypes_UnknownKey(PyTypeObject *t, PyObject *a, PyObject *k); /*proto*/
-static PyObject *__pyx_int_19791292;
 static PyObject *__pyx_tuple_;
+static PyObject *__pyx_tuple__2;
 static PyObject *__pyx_tuple__3;
+static PyObject *__pyx_tuple__4;
 static PyObject *__pyx_tuple__5;
+static PyObject *__pyx_tuple__6;
 static PyObject *__pyx_tuple__7;
+static PyObject *__pyx_tuple__8;
 static PyObject *__pyx_tuple__9;
+static PyObject *__pyx_tuple__10;
 static PyObject *__pyx_tuple__11;
+static PyObject *__pyx_tuple__12;
 static PyObject *__pyx_tuple__13;
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 static PyObject *__pyx_tuple__15;
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 static PyObject *__pyx_tuple__17;
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-static PyObject *__pyx_codeobj__14;
-static PyObject *__pyx_codeobj__16;
-static PyObject *__pyx_codeobj__18;
+static PyObject *__pyx_tuple__18;
+static PyObject *__pyx_tuple__19;
+static PyObject *__pyx_tuple__20;
+static PyObject *__pyx_tuple__21;
+static PyObject *__pyx_tuple__22;
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+static PyObject *__pyx_tuple__24;
+static PyObject *__pyx_tuple__25;
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+static PyObject *__pyx_tuple__30;
+static PyObject *__pyx_tuple__31;
+static PyObject *__pyx_codeobj__32;
 /* Late includes */
 
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+ * 
+ *     def __cinit__(self):             # <<<<<<<<<<<<<<
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+ * 
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+
+/* Python wrapper */
+static int __pyx_pw_3ssh_8keytypes_7KeyType_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static int __pyx_pw_3ssh_8keytypes_7KeyType_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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+static int __pyx_pf_3ssh_8keytypes_7KeyType___cinit__(struct __pyx_obj_3ssh_8keytypes_KeyType *__pyx_v_self) {
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+  __Pyx_RefNannyDeclarations
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+ * 
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+ * 
+ *     @property
+ */
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+  /* "ssh/keytypes.pyx":26
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+ * 
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+ *         self._type = ssh_keytypes_e.SSH_KEYTYPE_UNKNOWN
+ * 
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  *     @property
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-  /* "ssh/keytypes.pyx":36
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 }
 
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+  0, /*tp_vectorcall*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+  0, /*tp_print*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3ssh_8keytypes_RSA1Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
+  if (unlikely(!o)) return 0;
+  return o;
+}
+
+static PyMethodDef __pyx_methods_3ssh_8keytypes_RSA1Key[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7RSA1Key_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_7RSA1Key___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7RSA1Key_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_7RSA1Key_2__setstate_cython__},
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
+  PyVarObject_HEAD_INIT(0, 0)
+  "ssh.keytypes.RSA1Key", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_RSA1Key), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
+  #if PY_VERSION_HEX < 0x030800b4
+  0, /*tp_print*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4
+  0, /*tp_vectorcall_offset*/
+  #endif
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #endif
+  #if PY_MAJOR_VERSION >= 3
+  0, /*tp_as_async*/
+  #endif
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
+  #else
+  0, /*tp_repr*/
+  #endif
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3ssh_8keytypes_RSA1Key, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3ssh_8keytypes_RSA1Key, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  0, /*tp_version_tag*/
+  #if PY_VERSION_HEX >= 0x030400a1
+  0, /*tp_finalize*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+  0, /*tp_print*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSAKey(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
+  if (unlikely(!o)) return 0;
+  return o;
+}
+
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSAKey[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_8ECDSAKey_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_8ECDSAKey___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_8ECDSAKey_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_8ECDSAKey_2__setstate_cython__},
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
+  PyVarObject_HEAD_INIT(0, 0)
+  "ssh.keytypes.ECDSAKey", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSAKey), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
+  #if PY_VERSION_HEX < 0x030800b4
+  0, /*tp_print*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4
+  0, /*tp_vectorcall_offset*/
+  #endif
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #endif
+  #if PY_MAJOR_VERSION >= 3
+  0, /*tp_as_async*/
+  #endif
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
+  #else
+  0, /*tp_repr*/
+  #endif
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3ssh_8keytypes_ECDSAKey, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSAKey, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  0, /*tp_version_tag*/
+  #if PY_VERSION_HEX >= 0x030400a1
+  0, /*tp_finalize*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+  0, /*tp_print*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3ssh_8keytypes_DSSCert01Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
+  if (unlikely(!o)) return 0;
+  return o;
+}
+
+static PyMethodDef __pyx_methods_3ssh_8keytypes_DSSCert01Key[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12DSSCert01Key_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_12DSSCert01Key___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12DSSCert01Key_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_12DSSCert01Key_2__setstate_cython__},
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
+  PyVarObject_HEAD_INIT(0, 0)
+  "ssh.keytypes.DSSCert01Key", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_DSSCert01Key), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
+  #if PY_VERSION_HEX < 0x030800b4
+  0, /*tp_print*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4
+  0, /*tp_vectorcall_offset*/
+  #endif
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #endif
+  #if PY_MAJOR_VERSION >= 3
+  0, /*tp_as_async*/
+  #endif
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
+  #else
+  0, /*tp_repr*/
+  #endif
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3ssh_8keytypes_DSSCert01Key, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3ssh_8keytypes_DSSCert01Key, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  0, /*tp_version_tag*/
+  #if PY_VERSION_HEX >= 0x030400a1
+  0, /*tp_finalize*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+  0, /*tp_print*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3ssh_8keytypes_RSACert01Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
+  if (unlikely(!o)) return 0;
+  if (unlikely(__pyx_pw_3ssh_8keytypes_12RSACert01Key_1__cinit__(o, __pyx_empty_tuple, NULL) < 0)) goto bad;
+  return o;
+  bad:
+  Py_DECREF(o); o = 0;
+  return NULL;
+}
+
+static PyMethodDef __pyx_methods_3ssh_8keytypes_RSACert01Key[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12RSACert01Key_3__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_12RSACert01Key_2__reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12RSACert01Key_5__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_12RSACert01Key_4__setstate_cython__},
+  {0, 0, 0, 0}
+};
+
+static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
+  PyVarObject_HEAD_INIT(0, 0)
+  "ssh.keytypes.RSACert01Key", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_RSACert01Key), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
+  #if PY_VERSION_HEX < 0x030800b4
+  0, /*tp_print*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4
+  0, /*tp_vectorcall_offset*/
+  #endif
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #endif
+  #if PY_MAJOR_VERSION >= 3
+  0, /*tp_as_async*/
+  #endif
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
+  #else
+  0, /*tp_repr*/
+  #endif
+  0, /*tp_as_number*/
+  0, /*tp_as_sequence*/
+  0, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  0, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_VERSION_TAG|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3ssh_8keytypes_RSACert01Key, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3ssh_8keytypes_RSACert01Key, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  0, /*tp_version_tag*/
+  #if PY_VERSION_HEX >= 0x030400a1
+  0, /*tp_finalize*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b1
+  0, /*tp_vectorcall*/
+  #endif
+  #if PY_VERSION_HEX >= 0x030800b4 && PY_VERSION_HEX < 0x03090000
+  0, /*tp_print*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P256(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3ssh_8keytypes_KeyType(PyObject *o) {
-  #if CYTHON_USE_TP_FINALIZE
-  if (unlikely(PyType_HasFeature(Py_TYPE(o), Py_TPFLAGS_HAVE_FINALIZE) && Py_TYPE(o)->tp_finalize) && (!PyType_IS_GC(Py_TYPE(o)) || !_PyGC_FINALIZED(o))) {
-    if (PyObject_CallFinalizerFromDealloc(o)) return;
-  }
-  #endif
-  (*Py_TYPE(o)->tp_free)(o);
-}
-
-static PyObject *__pyx_getprop_3ssh_8keytypes_7KeyType_value(PyObject *o, CYTHON_UNUSED void *x) {
-  return __pyx_pw_3ssh_8keytypes_7KeyType_5value_1__get__(o);
-}
-
-static PyMethodDef __pyx_methods_3ssh_8keytypes_KeyType[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7KeyType_5__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_7KeyType_4__reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7KeyType_7__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_7KeyType_6__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P256[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P256_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_10ECDSA_P256___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P256_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_10ECDSA_P256_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static struct PyGetSetDef __pyx_getsets_3ssh_8keytypes_KeyType[] = {
-  {(char *)"value", __pyx_getprop_3ssh_8keytypes_7KeyType_value, 0, (char *)0, 0},
-  {0, 0, 0, 0, 0}
-};
-
-static PyTypeObject __pyx_type_3ssh_8keytypes_KeyType = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P256 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.KeyType", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_KeyType), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P256", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P256), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -7779,13 +4850,21 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_KeyType = {
   #if PY_MAJOR_VERSION >= 3
   0, /*tp_as_async*/
   #endif
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
+  #else
+  0, /*tp_repr*/
+  #endif
   0, /*tp_as_number*/
   0, /*tp_as_sequence*/
   0, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   0, /*tp_as_buffer*/
@@ -7797,9 +4876,9 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_KeyType = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_KeyType, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P256, /*tp_methods*/
   0, /*tp_members*/
-  __pyx_getsets_3ssh_8keytypes_KeyType, /*tp_getset*/
+  0, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -7807,7 +4886,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_KeyType = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_KeyType, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P256, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -7828,22 +4907,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_KeyType = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_DSSKey(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P384(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_DSSKey[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_6DSSKey_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_6DSSKey___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_6DSSKey_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_6DSSKey_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P384[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P384_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_10ECDSA_P384___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P384_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_10ECDSA_P384_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P384 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.DSSKey", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_DSSKey), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P384", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P384), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -7861,7 +4940,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -7871,7 +4950,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -7886,7 +4965,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_DSSKey, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P384, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -7896,7 +4975,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_DSSKey, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P384, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -7917,22 +4996,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSKey = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_RSAKey(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P521(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_RSAKey[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_6RSAKey_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_6RSAKey___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_6RSAKey_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_6RSAKey_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P521[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P521_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_10ECDSA_P521___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_10ECDSA_P521_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_10ECDSA_P521_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P521 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.RSAKey", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_RSAKey), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P521", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P521), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -7950,7 +5029,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -7960,7 +5039,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -7975,7 +5054,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_RSAKey, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P521, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -7985,7 +5064,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_RSAKey, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P521, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -8006,22 +5085,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSAKey = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_RSA1Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P256_CERT01(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_RSA1Key[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7RSA1Key_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_7RSA1Key___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_7RSA1Key_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_7RSA1Key_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P256_CERT01[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P256_CERT01_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_17ECDSA_P256_CERT01___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P256_CERT01_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_17ECDSA_P256_CERT01_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P256_CERT01 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.RSA1Key", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_RSA1Key), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P256_CERT01", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P256_CERT01), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -8039,7 +5118,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -8049,7 +5128,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -8064,7 +5143,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_RSA1Key, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P256_CERT01, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -8074,7 +5153,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_RSA1Key, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P256_CERT01, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -8095,22 +5174,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSA1Key = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSAKey(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P384_CERT01(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSAKey[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_8ECDSAKey_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_8ECDSAKey___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_8ECDSAKey_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_8ECDSAKey_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P384_CERT01[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P384_CERT01_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_17ECDSA_P384_CERT01___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P384_CERT01_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_17ECDSA_P384_CERT01_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P384_CERT01 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.ECDSAKey", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSAKey), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P384_CERT01", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P384_CERT01), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -8128,7 +5207,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -8138,7 +5217,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -8153,7 +5232,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_ECDSAKey, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P384_CERT01, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -8163,7 +5242,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_ECDSAKey, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P384_CERT01, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -8184,22 +5263,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSAKey = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_DSSCert01Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ECDSA_P521_CERT01(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_DSSCert01Key[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12DSSCert01Key_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_12DSSCert01Key___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12DSSCert01Key_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_12DSSCert01Key_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ECDSA_P521_CERT01[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P521_CERT01_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_17ECDSA_P521_CERT01___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_17ECDSA_P521_CERT01_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_17ECDSA_P521_CERT01_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ECDSA_P521_CERT01 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.DSSCert01Key", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_DSSCert01Key), /*tp_basicsize*/
+  "ssh.keytypes.ECDSA_P521_CERT01", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ECDSA_P521_CERT01), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -8217,7 +5296,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -8227,7 +5306,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -8242,7 +5321,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_DSSCert01Key, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ECDSA_P521_CERT01, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -8252,7 +5331,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_DSSCert01Key, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ECDSA_P521_CERT01, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -8273,22 +5352,22 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_DSSCert01Key = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3ssh_8keytypes_RSACert01Key(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_3ssh_8keytypes_ED25519_CERT01(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = __pyx_tp_new_3ssh_8keytypes_KeyType(t, a, k);
   if (unlikely(!o)) return 0;
   return o;
 }
 
-static PyMethodDef __pyx_methods_3ssh_8keytypes_RSACert01Key[] = {
-  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12RSACert01Key_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_12RSACert01Key___reduce_cython__},
-  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_12RSACert01Key_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_12RSACert01Key_2__setstate_cython__},
+static PyMethodDef __pyx_methods_3ssh_8keytypes_ED25519_CERT01[] = {
+  {"__reduce_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_14ED25519_CERT01_1__reduce_cython__, METH_NOARGS, __pyx_doc_3ssh_8keytypes_14ED25519_CERT01___reduce_cython__},
+  {"__setstate_cython__", (PyCFunction)__pyx_pw_3ssh_8keytypes_14ED25519_CERT01_3__setstate_cython__, METH_O, __pyx_doc_3ssh_8keytypes_14ED25519_CERT01_2__setstate_cython__},
   {0, 0, 0, 0}
 };
 
-static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
+static PyTypeObject __pyx_type_3ssh_8keytypes_ED25519_CERT01 = {
   PyVarObject_HEAD_INIT(0, 0)
-  "ssh.keytypes.RSACert01Key", /*tp_name*/
-  sizeof(struct __pyx_obj_3ssh_8keytypes_RSACert01Key), /*tp_basicsize*/
+  "ssh.keytypes.ED25519_CERT01", /*tp_name*/
+  sizeof(struct __pyx_obj_3ssh_8keytypes_ED25519_CERT01), /*tp_basicsize*/
   0, /*tp_itemsize*/
   __pyx_tp_dealloc_3ssh_8keytypes_KeyType, /*tp_dealloc*/
   #if PY_VERSION_HEX < 0x030800b4
@@ -8306,7 +5385,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -8316,7 +5395,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -8331,7 +5410,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3ssh_8keytypes_RSACert01Key, /*tp_methods*/
+  __pyx_methods_3ssh_8keytypes_ED25519_CERT01, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -8341,7 +5420,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_RSACert01Key = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3ssh_8keytypes_RSACert01Key, /*tp_new*/
+  __pyx_tp_new_3ssh_8keytypes_ED25519_CERT01, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -8395,7 +5474,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_UnknownKey = {
   0, /*tp_as_async*/
   #endif
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_3__repr__, /*tp_repr*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_5__repr__, /*tp_repr*/
   #else
   0, /*tp_repr*/
   #endif
@@ -8405,7 +5484,7 @@ static PyTypeObject __pyx_type_3ssh_8keytypes_UnknownKey = {
   0, /*tp_hash*/
   0, /*tp_call*/
   #if CYTHON_COMPILING_IN_PYPY
-  __pyx_pw_3ssh_8keytypes_7KeyType_1__str__, /*tp_str*/
+  __pyx_pw_3ssh_8keytypes_7KeyType_3__str__, /*tp_str*/
   #else
   0, /*tp_str*/
   #endif
@@ -8500,39 +5579,29 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s_DSSCert01Key, __pyx_k_DSSCert01Key, sizeof(__pyx_k_DSSCert01Key), 0, 0, 1, 1},
   {&__pyx_n_s_DSSKey, __pyx_k_DSSKey, sizeof(__pyx_k_DSSKey), 0, 0, 1, 1},
   {&__pyx_n_s_ECDSAKey, __pyx_k_ECDSAKey, sizeof(__pyx_k_ECDSAKey), 0, 0, 1, 1},
-  {&__pyx_kp_s_Incompatible_checksums_s_vs_0x12, __pyx_k_Incompatible_checksums_s_vs_0x12, sizeof(__pyx_k_Incompatible_checksums_s_vs_0x12), 0, 0, 1, 0},
+  {&__pyx_n_s_ECDSA_P256, __pyx_k_ECDSA_P256, sizeof(__pyx_k_ECDSA_P256), 0, 0, 1, 1},
+  {&__pyx_n_s_ECDSA_P256_CERT01, __pyx_k_ECDSA_P256_CERT01, sizeof(__pyx_k_ECDSA_P256_CERT01), 0, 0, 1, 1},
+  {&__pyx_n_s_ECDSA_P384, __pyx_k_ECDSA_P384, sizeof(__pyx_k_ECDSA_P384), 0, 0, 1, 1},
+  {&__pyx_n_s_ECDSA_P384_CERT01, __pyx_k_ECDSA_P384_CERT01, sizeof(__pyx_k_ECDSA_P384_CERT01), 0, 0, 1, 1},
+  {&__pyx_n_s_ECDSA_P521, __pyx_k_ECDSA_P521, sizeof(__pyx_k_ECDSA_P521), 0, 0, 1, 1},
+  {&__pyx_n_s_ECDSA_P521_CERT01, __pyx_k_ECDSA_P521_CERT01, sizeof(__pyx_k_ECDSA_P521_CERT01), 0, 0, 1, 1},
+  {&__pyx_n_s_ED25519_CERT01, __pyx_k_ED25519_CERT01, sizeof(__pyx_k_ED25519_CERT01), 0, 0, 1, 1},
   {&__pyx_n_s_KeyType, __pyx_k_KeyType, sizeof(__pyx_k_KeyType), 0, 0, 1, 1},
-  {&__pyx_n_s_PickleError, __pyx_k_PickleError, sizeof(__pyx_k_PickleError), 0, 0, 1, 1},
   {&__pyx_n_s_RSA1Key, __pyx_k_RSA1Key, sizeof(__pyx_k_RSA1Key), 0, 0, 1, 1},
   {&__pyx_n_s_RSACert01Key, __pyx_k_RSACert01Key, sizeof(__pyx_k_RSACert01Key), 0, 0, 1, 1},
   {&__pyx_n_s_RSAKey, __pyx_k_RSAKey, sizeof(__pyx_k_RSAKey), 0, 0, 1, 1},
+  {&__pyx_n_s_TypeError, __pyx_k_TypeError, sizeof(__pyx_k_TypeError), 0, 0, 1, 1},
   {&__pyx_n_s_UnknownKey, __pyx_k_UnknownKey, sizeof(__pyx_k_UnknownKey), 0, 0, 1, 1},
   {&__pyx_kp_s_Unknown_keytype_s, __pyx_k_Unknown_keytype_s, sizeof(__pyx_k_Unknown_keytype_s), 0, 0, 1, 0},
   {&__pyx_n_s_b_key_name, __pyx_k_b_key_name, sizeof(__pyx_k_b_key_name), 0, 0, 1, 1},
   {&__pyx_n_s_cline_in_traceback, __pyx_k_cline_in_traceback, sizeof(__pyx_k_cline_in_traceback), 0, 0, 1, 1},
-  {&__pyx_n_s_dict, __pyx_k_dict, sizeof(__pyx_k_dict), 0, 0, 1, 1},
   {&__pyx_n_s_getstate, __pyx_k_getstate, sizeof(__pyx_k_getstate), 0, 0, 1, 1},
-  {&__pyx_n_s_import, __pyx_k_import, sizeof(__pyx_k_import), 0, 0, 1, 1},
   {&__pyx_n_s_key_name, __pyx_k_key_name, sizeof(__pyx_k_key_name), 0, 0, 1, 1},
   {&__pyx_n_s_key_name_2, __pyx_k_key_name_2, sizeof(__pyx_k_key_name_2), 0, 0, 1, 1},
   {&__pyx_n_s_key_type_from_name, __pyx_k_key_type_from_name, sizeof(__pyx_k_key_type_from_name), 0, 0, 1, 1},
   {&__pyx_n_s_main, __pyx_k_main, sizeof(__pyx_k_main), 0, 0, 1, 1},
   {&__pyx_n_s_name, __pyx_k_name, sizeof(__pyx_k_name), 0, 0, 1, 1},
-  {&__pyx_n_s_new, __pyx_k_new, sizeof(__pyx_k_new), 0, 0, 1, 1},
-  {&__pyx_n_s_pickle, __pyx_k_pickle, sizeof(__pyx_k_pickle), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_PickleError, __pyx_k_pyx_PickleError, sizeof(__pyx_k_pyx_PickleError), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_checksum, __pyx_k_pyx_checksum, sizeof(__pyx_k_pyx_checksum), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_result, __pyx_k_pyx_result, sizeof(__pyx_k_pyx_result), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_state, __pyx_k_pyx_state, sizeof(__pyx_k_pyx_state), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_type, __pyx_k_pyx_type, sizeof(__pyx_k_pyx_type), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_DSSCert01Key, __pyx_k_pyx_unpickle_DSSCert01Key, sizeof(__pyx_k_pyx_unpickle_DSSCert01Key), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_DSSKey, __pyx_k_pyx_unpickle_DSSKey, sizeof(__pyx_k_pyx_unpickle_DSSKey), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_ECDSAKey, __pyx_k_pyx_unpickle_ECDSAKey, sizeof(__pyx_k_pyx_unpickle_ECDSAKey), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_KeyType, __pyx_k_pyx_unpickle_KeyType, sizeof(__pyx_k_pyx_unpickle_KeyType), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_RSA1Key, __pyx_k_pyx_unpickle_RSA1Key, sizeof(__pyx_k_pyx_unpickle_RSA1Key), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_RSACert01Key, __pyx_k_pyx_unpickle_RSACert01Key, sizeof(__pyx_k_pyx_unpickle_RSACert01Key), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_RSAKey, __pyx_k_pyx_unpickle_RSAKey, sizeof(__pyx_k_pyx_unpickle_RSAKey), 0, 0, 1, 1},
-  {&__pyx_n_s_pyx_unpickle_UnknownKey, __pyx_k_pyx_unpickle_UnknownKey, sizeof(__pyx_k_pyx_unpickle_UnknownKey), 0, 0, 1, 1},
+  {&__pyx_kp_s_no_default___reduce___due_to_non, __pyx_k_no_default___reduce___due_to_non, sizeof(__pyx_k_no_default___reduce___due_to_non), 0, 0, 1, 0},
   {&__pyx_n_s_reduce, __pyx_k_reduce, sizeof(__pyx_k_reduce), 0, 0, 1, 1},
   {&__pyx_n_s_reduce_cython, __pyx_k_reduce_cython, sizeof(__pyx_k_reduce_cython), 0, 0, 1, 1},
   {&__pyx_n_s_reduce_ex, __pyx_k_reduce_ex, sizeof(__pyx_k_reduce_ex), 0, 0, 1, 1},
@@ -8541,69 +5610,317 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s_ssh_keytypes, __pyx_k_ssh_keytypes, sizeof(__pyx_k_ssh_keytypes), 0, 0, 1, 1},
   {&__pyx_kp_s_ssh_keytypes_pyx, __pyx_k_ssh_keytypes_pyx, sizeof(__pyx_k_ssh_keytypes_pyx), 0, 0, 1, 0},
   {&__pyx_n_s_str, __pyx_k_str, sizeof(__pyx_k_str), 0, 0, 1, 1},
-  {&__pyx_kp_s_stringsource, __pyx_k_stringsource, sizeof(__pyx_k_stringsource), 0, 0, 1, 0},
   {&__pyx_n_s_test, __pyx_k_test, sizeof(__pyx_k_test), 0, 0, 1, 1},
   {&__pyx_n_s_type, __pyx_k_type, sizeof(__pyx_k_type), 0, 0, 1, 1},
-  {&__pyx_n_s_update, __pyx_k_update, sizeof(__pyx_k_update), 0, 0, 1, 1},
   {0, 0, 0, 0, 0, 0, 0}
 };
 static CYTHON_SMALL_CODE int __Pyx_InitCachedBuiltins(void) {
+  __pyx_builtin_TypeError = __Pyx_GetBuiltinName(__pyx_n_s_TypeError); if (!__pyx_builtin_TypeError) __PYX_ERR(0, 2, __pyx_L1_error)
   return 0;
+  __pyx_L1_error:;
+  return -1;
 }
 
 static CYTHON_SMALL_CODE int __Pyx_InitCachedConstants(void) {
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__Pyx_InitCachedConstants", 0);
 
-  /* "ssh/keytypes.pyx":92
- * 
- * 
- * def key_type_from_name(key_name):             # <<<<<<<<<<<<<<
- *     cdef ssh_keytypes_e _type
- *     cdef bytes b_key_name = to_bytes(key_name)
+  /* "(tree fragment)":2
+ * def __reduce_cython__(self):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
  */
-  __pyx_tuple_ = PyTuple_Pack(4, __pyx_n_s_key_name, __pyx_n_s_type, __pyx_n_s_b_key_name, __pyx_n_s_key_name_2); if (unlikely(!__pyx_tuple_)) __PYX_ERR(0, 92, __pyx_L1_error)
+  __pyx_tuple_ = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple_)) __PYX_ERR(0, 2, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple_);
   __Pyx_GIVEREF(__pyx_tuple_);
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-  /* "(tree fragment)":1
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- *     cdef object __pyx_PickleError
- *     cdef object __pyx_result
+  /* "(tree fragment)":4
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ */
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+
+  /* "(tree fragment)":2
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+ * def __setstate_cython__(self, __pyx_state):
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  */
-  __pyx_tuple__3 = PyTuple_Pack(5, __pyx_n_s_pyx_type, __pyx_n_s_pyx_checksum, __pyx_n_s_pyx_state, __pyx_n_s_pyx_PickleError, __pyx_n_s_pyx_result); if (unlikely(!__pyx_tuple__3)) __PYX_ERR(1, 1, __pyx_L1_error)
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+  /* "(tree fragment)":4
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+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ */
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+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
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+  /* "(tree fragment)":4
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+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
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+  /* "(tree fragment)":2
+ * def __reduce_cython__(self):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
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+  /* "(tree fragment)":4
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ */
+  __pyx_tuple__8 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__8)) __PYX_ERR(0, 4, __pyx_L1_error)
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+  __Pyx_GIVEREF(__pyx_tuple__8);
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+  /* "(tree fragment)":2
+ * def __reduce_cython__(self):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ */
+  __pyx_tuple__9 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__9)) __PYX_ERR(0, 2, __pyx_L1_error)
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+
+  /* "(tree fragment)":4
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ */
+  __pyx_tuple__10 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__10)) __PYX_ERR(0, 4, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_tuple__10);
+  __Pyx_GIVEREF(__pyx_tuple__10);
+
+  /* "(tree fragment)":2
+ * def __reduce_cython__(self):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ */
+  __pyx_tuple__11 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__11)) __PYX_ERR(0, 2, __pyx_L1_error)
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+
+  /* "(tree fragment)":4
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ */
+  __pyx_tuple__12 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__12)) __PYX_ERR(0, 4, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_tuple__12);
+  __Pyx_GIVEREF(__pyx_tuple__12);
+
+  /* "(tree fragment)":2
+ * def __reduce_cython__(self):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")             # <<<<<<<<<<<<<<
+ * def __setstate_cython__(self, __pyx_state):
+ *     raise TypeError("no default __reduce__ due to non-trivial __cinit__")
+ */
+  __pyx_tuple__13 = PyTuple_Pack(1, __pyx_kp_s_no_default___reduce___due_to_non); if (unlikely(!__pyx_tuple__13)) __PYX_ERR(0, 2, __pyx_L1_error)
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-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_pyx_unpickle_RSACert01Key, __pyx_t_1) < 0) __PYX_ERR(1, 1, __pyx_L1_error)
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-  __pyx_t_1 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 1, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyDict_NewPresized(0); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) __PYX_ERR(0, 1, __pyx_L1_error)
+  if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) __PYX_ERR(1, 1, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
   /*--- Wrapped vars code ---*/
@@ -9164,6 +6469,86 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject
 }
 #endif
 
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+    PyObject* result = __Pyx_PyObject_GetAttrStr(__pyx_b, name);
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+            "name '%U' is not defined", name);
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+}
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+/* RaiseArgTupleInvalid */
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+    int exact,
+    Py_ssize_t num_min,
+    Py_ssize_t num_max,
+    Py_ssize_t num_found)
+{
+    Py_ssize_t num_expected;
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+        num_expected = num_min;
+        more_or_less = "at least";
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+        num_expected = num_max;
+        more_or_less = "at most";
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 /* PyFunctionFastCall */
 #if CYTHON_FAST_PYCALL
 static PyObject* __Pyx_PyFunction_FastCallNoKw(PyCodeObject *co, PyObject **args, Py_ssize_t na,
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-    tstate->curexc_traceback = tb;
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-/* GetAttr3 */
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-    __Pyx_PyThreadState_assign
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-static CYTHON_INLINE PyObject *__Pyx_GetAttr3(PyObject *o, PyObject *n, PyObject *d) {
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-    Py_INCREF(arg1);
-    PyTuple_SET_ITEM(args, 0, arg1);
-    Py_INCREF(arg2);
-    PyTuple_SET_ITEM(args, 1, arg2);
-    Py_INCREF(function);
-    result = __Pyx_PyObject_Call(function, args, NULL);
-    Py_DECREF(args);
-    Py_DECREF(function);
-done:
-    return result;
+static CYTHON_INLINE void __Pyx_ErrRestoreInState(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
+    PyObject *tmp_type, *tmp_value, *tmp_tb;
+    tmp_type = tstate->curexc_type;
+    tmp_value = tstate->curexc_value;
+    tmp_tb = tstate->curexc_traceback;
+    tstate->curexc_type = type;
+    tstate->curexc_value = value;
+    tstate->curexc_traceback = tb;
+    Py_XDECREF(tmp_type);
+    Py_XDECREF(tmp_value);
+    Py_XDECREF(tmp_tb);
 }
-
-/* ExtTypeTest */
-static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
-    if (unlikely(!type)) {
-        PyErr_SetString(PyExc_SystemError, "Missing type object");
-        return 0;
-    }
-    if (likely(__Pyx_TypeCheck(obj, type)))
-        return 1;
-    PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
-                 Py_TYPE(obj)->tp_name, type->tp_name);
-    return 0;
+static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
+    *type = tstate->curexc_type;
+    *value = tstate->curexc_value;
+    *tb = tstate->curexc_traceback;
+    tstate->curexc_type = 0;
+    tstate->curexc_value = 0;
+    tstate->curexc_traceback = 0;
 }
+#endif
 
 /* RaiseException */
 #if PY_MAJOR_VERSION < 3
@@ -9761,243 +6976,17 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
 }
 #endif
 
-/* RaiseArgTupleInvalid */
-static void __Pyx_RaiseArgtupleInvalid(
-    const char* func_name,
-    int exact,
-    Py_ssize_t num_min,
-    Py_ssize_t num_max,
-    Py_ssize_t num_found)
-{
-    Py_ssize_t num_expected;
-    const char *more_or_less;
-    if (num_found < num_min) {
-        num_expected = num_min;
-        more_or_less = "at least";
-    } else {
-        num_expected = num_max;
-        more_or_less = "at most";
-    }
-    if (exact) {
-        more_or_less = "exactly";
-    }
-    PyErr_Format(PyExc_TypeError,
-                 "%.200s() takes %.8s %" CYTHON_FORMAT_SSIZE_T "d positional argument%.1s (%" CYTHON_FORMAT_SSIZE_T "d given)",
-                 func_name, more_or_less, num_expected,
-                 (num_expected == 1) ? "" : "s", num_found);
-}
-
-/* RaiseDoubleKeywords */
-static void __Pyx_RaiseDoubleKeywordsError(
-    const char* func_name,
-    PyObject* kw_name)
-{
-    PyErr_Format(PyExc_TypeError,
-        #if PY_MAJOR_VERSION >= 3
-        "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
-        #else
-        "%s() got multiple values for keyword argument '%s'", func_name,
-        PyString_AsString(kw_name));
-        #endif
-}
-
-/* ParseKeywords */
-static int __Pyx_ParseOptionalKeywords(
-    PyObject *kwds,
-    PyObject **argnames[],
-    PyObject *kwds2,
-    PyObject *values[],
-    Py_ssize_t num_pos_args,
-    const char* function_name)
-{
-    PyObject *key = 0, *value = 0;
-    Py_ssize_t pos = 0;
-    PyObject*** name;
-    PyObject*** first_kw_arg = argnames + num_pos_args;
-    while (PyDict_Next(kwds, &pos, &key, &value)) {
-        name = first_kw_arg;
-        while (*name && (**name != key)) name++;
-        if (*name) {
-            values[name-argnames] = value;
-            continue;
-        }
-        name = first_kw_arg;
-        #if PY_MAJOR_VERSION < 3
-        if (likely(PyString_Check(key))) {
-            while (*name) {
-                if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
-                        && _PyString_Eq(**name, key)) {
-                    values[name-argnames] = value;
-                    break;
-                }
-                name++;
-            }
-            if (*name) continue;
-            else {
-                PyObject*** argname = argnames;
-                while (argname != first_kw_arg) {
-                    if ((**argname == key) || (
-                            (CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
-                             && _PyString_Eq(**argname, key))) {
-                        goto arg_passed_twice;
-                    }
-                    argname++;
-                }
-            }
-        } else
-        #endif
-        if (likely(PyUnicode_Check(key))) {
-            while (*name) {
-                int cmp = (**name == key) ? 0 :
-                #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
-                    (__Pyx_PyUnicode_GET_LENGTH(**name) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
-                #endif
-                    PyUnicode_Compare(**name, key);
-                if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
-                if (cmp == 0) {
-                    values[name-argnames] = value;
-                    break;
-                }
-                name++;
-            }
-            if (*name) continue;
-            else {
-                PyObject*** argname = argnames;
-                while (argname != first_kw_arg) {
-                    int cmp = (**argname == key) ? 0 :
-                    #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
-                        (__Pyx_PyUnicode_GET_LENGTH(**argname) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
-                    #endif
-                        PyUnicode_Compare(**argname, key);
-                    if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
-                    if (cmp == 0) goto arg_passed_twice;
-                    argname++;
-                }
-            }
-        } else
-            goto invalid_keyword_type;
-        if (kwds2) {
-            if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
-        } else {
-            goto invalid_keyword;
-        }
-    }
-    return 0;
-arg_passed_twice:
-    __Pyx_RaiseDoubleKeywordsError(function_name, key);
-    goto bad;
-invalid_keyword_type:
-    PyErr_Format(PyExc_TypeError,
-        "%.200s() keywords must be strings", function_name);
-    goto bad;
-invalid_keyword:
-    PyErr_Format(PyExc_TypeError,
-    #if PY_MAJOR_VERSION < 3
-        "%.200s() got an unexpected keyword argument '%.200s'",
-        function_name, PyString_AsString(key));
-    #else
-        "%s() got an unexpected keyword argument '%U'",
-        function_name, key);
-    #endif
-bad:
-    return -1;
-}
-
-/* Import */
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
-    PyObject *empty_list = 0;
-    PyObject *module = 0;
-    PyObject *global_dict = 0;
-    PyObject *empty_dict = 0;
-    PyObject *list;
-    #if PY_MAJOR_VERSION < 3
-    PyObject *py_import;
-    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
-    if (!py_import)
-        goto bad;
-    #endif
-    if (from_list)
-        list = from_list;
-    else {
-        empty_list = PyList_New(0);
-        if (!empty_list)
-            goto bad;
-        list = empty_list;
-    }
-    global_dict = PyModule_GetDict(__pyx_m);
-    if (!global_dict)
-        goto bad;
-    empty_dict = PyDict_New();
-    if (!empty_dict)
-        goto bad;
-    {
-        #if PY_MAJOR_VERSION >= 3
-        if (level == -1) {
-            if ((1) && (strchr(__Pyx_MODULE_NAME, '.'))) {
-                module = PyImport_ImportModuleLevelObject(
-                    name, global_dict, empty_dict, list, 1);
-                if (!module) {
-                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
-                        goto bad;
-                    PyErr_Clear();
-                }
-            }
-            level = 0;
-        }
-        #endif
-        if (!module) {
-            #if PY_MAJOR_VERSION < 3
-            PyObject *py_level = PyInt_FromLong(level);
-            if (!py_level)
-                goto bad;
-            module = PyObject_CallFunctionObjArgs(py_import,
-                name, global_dict, empty_dict, list, py_level, (PyObject *)NULL);
-            Py_DECREF(py_level);
-            #else
-            module = PyImport_ImportModuleLevelObject(
-                name, global_dict, empty_dict, list, level);
-            #endif
-        }
-    }
-bad:
-    #if PY_MAJOR_VERSION < 3
-    Py_XDECREF(py_import);
-    #endif
-    Py_XDECREF(empty_list);
-    Py_XDECREF(empty_dict);
-    return module;
-}
-
-/* ImportFrom */
-static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name) {
-    PyObject* value = __Pyx_PyObject_GetAttrStr(module, name);
-    if (unlikely(!value) && PyErr_ExceptionMatches(PyExc_AttributeError)) {
-        PyErr_Format(PyExc_ImportError,
-        #if PY_MAJOR_VERSION < 3
-            "cannot import name %.230s", PyString_AS_STRING(name));
-        #else
-            "cannot import name %S", name);
-        #endif
-    }
-    return value;
-}
-
-/* HasAttr */
-static CYTHON_INLINE int __Pyx_HasAttr(PyObject *o, PyObject *n) {
-    PyObject *r;
-    if (unlikely(!__Pyx_PyBaseString_Check(n))) {
-        PyErr_SetString(PyExc_TypeError,
-                        "hasattr(): attribute name must be string");
-        return -1;
-    }
-    r = __Pyx_GetAttr(o, n);
-    if (unlikely(!r)) {
-        PyErr_Clear();
+/* ExtTypeTest */
+static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
+    if (unlikely(!type)) {
+        PyErr_SetString(PyExc_SystemError, "Missing type object");
         return 0;
-    } else {
-        Py_DECREF(r);
-        return 1;
     }
+    if (likely(__Pyx_TypeCheck(obj, type)))
+        return 1;
+    PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
+                 Py_TYPE(obj)->tp_name, type->tp_name);
+    return 0;
 }
 
 /* PyObject_GenericGetAttrNoDict */
@@ -10050,6 +7039,31 @@ static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_nam
 }
 #endif
 
+/* PyErrExceptionMatches */
+#if CYTHON_FAST_THREAD_STATE
+static int __Pyx_PyErr_ExceptionMatchesTuple(PyObject *exc_type, PyObject *tuple) {
+    Py_ssize_t i, n;
+    n = PyTuple_GET_SIZE(tuple);
+#if PY_MAJOR_VERSION >= 3
+    for (i=0; i<n; i++) {
+        if (exc_type == PyTuple_GET_ITEM(tuple, i)) return 1;
+    }
+#endif
+    for (i=0; i<n; i++) {
+        if (__Pyx_PyErr_GivenExceptionMatches(exc_type, PyTuple_GET_ITEM(tuple, i))) return 1;
+    }
+    return 0;
+}
+static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err) {
+    PyObject *exc_type = tstate->curexc_type;
+    if (exc_type == err) return 1;
+    if (unlikely(!exc_type)) return 0;
+    if (unlikely(PyTuple_Check(err)))
+        return __Pyx_PyErr_ExceptionMatchesTuple(exc_type, err);
+    return __Pyx_PyErr_GivenExceptionMatches(exc_type, err);
+}
+#endif
+
 /* PyObjectGetAttrStrNoError */
 static void __Pyx_PyObject_GetAttrStr_ClearAttributeError(void) {
     __Pyx_PyThreadState_declare
@@ -10156,6 +7170,32 @@ static int __Pyx_setup_reduce(PyObject* type_obj) {
     return ret;
 }
 
+/* PyDictVersioning */
+#if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
+static CYTHON_INLINE PY_UINT64_T __Pyx_get_tp_dict_version(PyObject *obj) {
+    PyObject *dict = Py_TYPE(obj)->tp_dict;
+    return likely(dict) ? __PYX_GET_DICT_VERSION(dict) : 0;
+}
+static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj) {
+    PyObject **dictptr = NULL;
+    Py_ssize_t offset = Py_TYPE(obj)->tp_dictoffset;
+    if (offset) {
+#if CYTHON_COMPILING_IN_CPYTHON
+        dictptr = (likely(offset > 0)) ? (PyObject **) ((char *)obj + offset) : _PyObject_GetDictPtr(obj);
+#else
+        dictptr = _PyObject_GetDictPtr(obj);
+#endif
+    }
+    return (dictptr && *dictptr) ? __PYX_GET_DICT_VERSION(*dictptr) : 0;
+}
+static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version) {
+    PyObject *dict = Py_TYPE(obj)->tp_dict;
+    if (unlikely(!dict) || unlikely(tp_dict_version != __PYX_GET_DICT_VERSION(dict)))
+        return 0;
+    return obj_dict_version == __Pyx_get_object_dict_version(obj);
+}
+#endif
+
 /* CLineInTraceback */
 #ifndef CYTHON_CLINE_IN_TRACEBACK
 static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
@@ -10416,51 +7456,20 @@ static CYTHON_INLINE PyObject* __Pyx_PyInt_From_enum__ssh_keytypes_e(enum ssh_ke
         return (target_type) value;\
     }
 
-/* CIntToPy */
-static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
-    const long neg_one = (long) ((long) 0 - (long) 1), const_zero = (long) 0;
-    const int is_unsigned = neg_one > const_zero;
-    if (is_unsigned) {
-        if (sizeof(long) < sizeof(long)) {
-            return PyInt_FromLong((long) value);
-        } else if (sizeof(long) <= sizeof(unsigned long)) {
-            return PyLong_FromUnsignedLong((unsigned long) value);
-#ifdef HAVE_LONG_LONG
-        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
-            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
-#endif
-        }
-    } else {
-        if (sizeof(long) <= sizeof(long)) {
-            return PyInt_FromLong((long) value);
-#ifdef HAVE_LONG_LONG
-        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
-            return PyLong_FromLongLong((PY_LONG_LONG) value);
-#endif
-        }
-    }
-    {
-        int one = 1; int little = (int)*(unsigned char *)&one;
-        unsigned char *bytes = (unsigned char *)&value;
-        return _PyLong_FromByteArray(bytes, sizeof(long),
-                                     little, !is_unsigned);
-    }
-}
-
 /* CIntFromPy */
-static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyObject *x) {
-    const enum ssh_keytypes_e neg_one = (enum ssh_keytypes_e) ((enum ssh_keytypes_e) 0 - (enum ssh_keytypes_e) 1), const_zero = (enum ssh_keytypes_e) 0;
+static CYTHON_INLINE char __Pyx_PyInt_As_char(PyObject *x) {
+    const char neg_one = (char) ((char) 0 - (char) 1), const_zero = (char) 0;
     const int is_unsigned = neg_one > const_zero;
 #if PY_MAJOR_VERSION < 3
     if (likely(PyInt_Check(x))) {
-        if (sizeof(enum ssh_keytypes_e) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, long, PyInt_AS_LONG(x))
+        if (sizeof(char) < sizeof(long)) {
+            __PYX_VERIFY_RETURN_INT(char, long, PyInt_AS_LONG(x))
         } else {
             long val = PyInt_AS_LONG(x);
             if (is_unsigned && unlikely(val < 0)) {
                 goto raise_neg_overflow;
             }
-            return (enum ssh_keytypes_e) val;
+            return (char) val;
         }
     } else
 #endif
@@ -10469,32 +7478,32 @@ static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyO
 #if CYTHON_USE_PYLONG_INTERNALS
             const digit* digits = ((PyLongObject*)x)->ob_digit;
             switch (Py_SIZE(x)) {
-                case  0: return (enum ssh_keytypes_e) 0;
-                case  1: __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, digit, digits[0])
+                case  0: return (char) 0;
+                case  1: __PYX_VERIFY_RETURN_INT(char, digit, digits[0])
                 case 2:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 1 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 1 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) >= 2 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((((enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0]));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) >= 2 * PyLong_SHIFT) {
+                            return (char) (((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
                         }
                     }
                     break;
                 case 3:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 2 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 2 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) >= 3 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((((((enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0]));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) >= 3 * PyLong_SHIFT) {
+                            return (char) (((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
                         }
                     }
                     break;
                 case 4:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 3 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 3 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) >= 4 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((((((((enum ssh_keytypes_e)digits[3]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0]));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) >= 4 * PyLong_SHIFT) {
+                            return (char) (((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
                         }
                     }
                     break;
@@ -10508,86 +7517,86 @@ static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyO
             {
                 int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                 if (unlikely(result < 0))
-                    return (enum ssh_keytypes_e) -1;
+                    return (char) -1;
                 if (unlikely(result == 1))
                     goto raise_neg_overflow;
             }
 #endif
-            if (sizeof(enum ssh_keytypes_e) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT_EXC(enum ssh_keytypes_e, unsigned long, PyLong_AsUnsignedLong(x))
+            if (sizeof(char) <= sizeof(unsigned long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(char, unsigned long, PyLong_AsUnsignedLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if (sizeof(enum ssh_keytypes_e) <= sizeof(unsigned PY_LONG_LONG)) {
-                __PYX_VERIFY_RETURN_INT_EXC(enum ssh_keytypes_e, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
+            } else if (sizeof(char) <= sizeof(unsigned PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(char, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
 #endif
             }
         } else {
 #if CYTHON_USE_PYLONG_INTERNALS
             const digit* digits = ((PyLongObject*)x)->ob_digit;
             switch (Py_SIZE(x)) {
-                case  0: return (enum ssh_keytypes_e) 0;
-                case -1: __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, sdigit, (sdigit) (-(sdigit)digits[0]))
-                case  1: __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e,  digit, +digits[0])
+                case  0: return (char) 0;
+                case -1: __PYX_VERIFY_RETURN_INT(char, sdigit, (sdigit) (-(sdigit)digits[0]))
+                case  1: __PYX_VERIFY_RETURN_INT(char,  digit, +digits[0])
                 case -2:
-                    if (8 * sizeof(enum ssh_keytypes_e) - 1 > 1 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) - 1 > 1 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 2 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((enum ssh_keytypes_e)-1)*(((((enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
+                            return (char) (((char)-1)*(((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
                 case 2:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 1 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 1 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 2 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) ((((((enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
+                            return (char) ((((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
                 case -3:
-                    if (8 * sizeof(enum ssh_keytypes_e) - 1 > 2 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 3 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((enum ssh_keytypes_e)-1)*(((((((enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
+                            return (char) (((char)-1)*(((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
                 case 3:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 2 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 2 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 3 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) ((((((((enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
+                            return (char) ((((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
                 case -4:
-                    if (8 * sizeof(enum ssh_keytypes_e) - 1 > 3 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 4 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) (((enum ssh_keytypes_e)-1)*(((((((((enum ssh_keytypes_e)digits[3]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 4 * PyLong_SHIFT) {
+                            return (char) (((char)-1)*(((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
                 case 4:
-                    if (8 * sizeof(enum ssh_keytypes_e) > 3 * PyLong_SHIFT) {
+                    if (8 * sizeof(char) > 3 * PyLong_SHIFT) {
                         if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(enum ssh_keytypes_e, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(enum ssh_keytypes_e) - 1 > 4 * PyLong_SHIFT) {
-                            return (enum ssh_keytypes_e) ((((((((((enum ssh_keytypes_e)digits[3]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[2]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[1]) << PyLong_SHIFT) | (enum ssh_keytypes_e)digits[0])));
+                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
+                        } else if (8 * sizeof(char) - 1 > 4 * PyLong_SHIFT) {
+                            return (char) ((((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
                         }
                     }
                     break;
             }
 #endif
-            if (sizeof(enum ssh_keytypes_e) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT_EXC(enum ssh_keytypes_e, long, PyLong_AsLong(x))
+            if (sizeof(char) <= sizeof(long)) {
+                __PYX_VERIFY_RETURN_INT_EXC(char, long, PyLong_AsLong(x))
 #ifdef HAVE_LONG_LONG
-            } else if (sizeof(enum ssh_keytypes_e) <= sizeof(PY_LONG_LONG)) {
-                __PYX_VERIFY_RETURN_INT_EXC(enum ssh_keytypes_e, PY_LONG_LONG, PyLong_AsLongLong(x))
+            } else if (sizeof(char) <= sizeof(PY_LONG_LONG)) {
+                __PYX_VERIFY_RETURN_INT_EXC(char, PY_LONG_LONG, PyLong_AsLongLong(x))
 #endif
             }
         }
@@ -10596,7 +7605,7 @@ static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyO
             PyErr_SetString(PyExc_RuntimeError,
                             "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
 #else
-            enum ssh_keytypes_e val;
+            char val;
             PyObject *v = __Pyx_PyNumber_IntOrLong(x);
  #if PY_MAJOR_VERSION < 3
             if (likely(v) && !PyLong_Check(v)) {
@@ -10616,24 +7625,55 @@ static CYTHON_INLINE enum ssh_keytypes_e __Pyx_PyInt_As_enum__ssh_keytypes_e(PyO
                     return val;
             }
 #endif
-            return (enum ssh_keytypes_e) -1;
+            return (char) -1;
         }
     } else {
-        enum ssh_keytypes_e val;
+        char val;
         PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (enum ssh_keytypes_e) -1;
-        val = __Pyx_PyInt_As_enum__ssh_keytypes_e(tmp);
+        if (!tmp) return (char) -1;
+        val = __Pyx_PyInt_As_char(tmp);
         Py_DECREF(tmp);
         return val;
     }
 raise_overflow:
     PyErr_SetString(PyExc_OverflowError,
-        "value too large to convert to enum ssh_keytypes_e");
-    return (enum ssh_keytypes_e) -1;
+        "value too large to convert to char");
+    return (char) -1;
 raise_neg_overflow:
     PyErr_SetString(PyExc_OverflowError,
-        "can't convert negative value to enum ssh_keytypes_e");
-    return (enum ssh_keytypes_e) -1;
+        "can't convert negative value to char");
+    return (char) -1;
+}
+
+/* CIntToPy */
+static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
+    const long neg_one = (long) ((long) 0 - (long) 1), const_zero = (long) 0;
+    const int is_unsigned = neg_one > const_zero;
+    if (is_unsigned) {
+        if (sizeof(long) < sizeof(long)) {
+            return PyInt_FromLong((long) value);
+        } else if (sizeof(long) <= sizeof(unsigned long)) {
+            return PyLong_FromUnsignedLong((unsigned long) value);
+#ifdef HAVE_LONG_LONG
+        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
+            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
+#endif
+        }
+    } else {
+        if (sizeof(long) <= sizeof(long)) {
+            return PyInt_FromLong((long) value);
+#ifdef HAVE_LONG_LONG
+        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
+            return PyLong_FromLongLong((PY_LONG_LONG) value);
+#endif
+        }
+    }
+    {
+        int one = 1; int little = (int)*(unsigned char *)&one;
+        unsigned char *bytes = (unsigned char *)&value;
+        return _PyLong_FromByteArray(bytes, sizeof(long),
+                                     little, !is_unsigned);
+    }
 }
 
 /* CIntFromPy */
@@ -10825,195 +7865,6 @@ static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
     return (long) -1;
 }
 
-/* CIntFromPy */
-static CYTHON_INLINE char __Pyx_PyInt_As_char(PyObject *x) {
-    const char neg_one = (char) ((char) 0 - (char) 1), const_zero = (char) 0;
-    const int is_unsigned = neg_one > const_zero;
-#if PY_MAJOR_VERSION < 3
-    if (likely(PyInt_Check(x))) {
-        if (sizeof(char) < sizeof(long)) {
-            __PYX_VERIFY_RETURN_INT(char, long, PyInt_AS_LONG(x))
-        } else {
-            long val = PyInt_AS_LONG(x);
-            if (is_unsigned && unlikely(val < 0)) {
-                goto raise_neg_overflow;
-            }
-            return (char) val;
-        }
-    } else
-#endif
-    if (likely(PyLong_Check(x))) {
-        if (is_unsigned) {
-#if CYTHON_USE_PYLONG_INTERNALS
-            const digit* digits = ((PyLongObject*)x)->ob_digit;
-            switch (Py_SIZE(x)) {
-                case  0: return (char) 0;
-                case  1: __PYX_VERIFY_RETURN_INT(char, digit, digits[0])
-                case 2:
-                    if (8 * sizeof(char) > 1 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) >= 2 * PyLong_SHIFT) {
-                            return (char) (((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
-                        }
-                    }
-                    break;
-                case 3:
-                    if (8 * sizeof(char) > 2 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) >= 3 * PyLong_SHIFT) {
-                            return (char) (((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
-                        }
-                    }
-                    break;
-                case 4:
-                    if (8 * sizeof(char) > 3 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) >= 4 * PyLong_SHIFT) {
-                            return (char) (((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0]));
-                        }
-                    }
-                    break;
-            }
-#endif
-#if CYTHON_COMPILING_IN_CPYTHON
-            if (unlikely(Py_SIZE(x) < 0)) {
-                goto raise_neg_overflow;
-            }
-#else
-            {
-                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
-                if (unlikely(result < 0))
-                    return (char) -1;
-                if (unlikely(result == 1))
-                    goto raise_neg_overflow;
-            }
-#endif
-            if (sizeof(char) <= sizeof(unsigned long)) {
-                __PYX_VERIFY_RETURN_INT_EXC(char, unsigned long, PyLong_AsUnsignedLong(x))
-#ifdef HAVE_LONG_LONG
-            } else if (sizeof(char) <= sizeof(unsigned PY_LONG_LONG)) {
-                __PYX_VERIFY_RETURN_INT_EXC(char, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
-#endif
-            }
-        } else {
-#if CYTHON_USE_PYLONG_INTERNALS
-            const digit* digits = ((PyLongObject*)x)->ob_digit;
-            switch (Py_SIZE(x)) {
-                case  0: return (char) 0;
-                case -1: __PYX_VERIFY_RETURN_INT(char, sdigit, (sdigit) (-(sdigit)digits[0]))
-                case  1: __PYX_VERIFY_RETURN_INT(char,  digit, +digits[0])
-                case -2:
-                    if (8 * sizeof(char) - 1 > 1 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
-                            return (char) (((char)-1)*(((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-                case 2:
-                    if (8 * sizeof(char) > 1 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
-                            return (char) ((((((char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-                case -3:
-                    if (8 * sizeof(char) - 1 > 2 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
-                            return (char) (((char)-1)*(((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-                case 3:
-                    if (8 * sizeof(char) > 2 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
-                            return (char) ((((((((char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-                case -4:
-                    if (8 * sizeof(char) - 1 > 3 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 4 * PyLong_SHIFT) {
-                            return (char) (((char)-1)*(((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-                case 4:
-                    if (8 * sizeof(char) > 3 * PyLong_SHIFT) {
-                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
-                            __PYX_VERIFY_RETURN_INT(char, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
-                        } else if (8 * sizeof(char) - 1 > 4 * PyLong_SHIFT) {
-                            return (char) ((((((((((char)digits[3]) << PyLong_SHIFT) | (char)digits[2]) << PyLong_SHIFT) | (char)digits[1]) << PyLong_SHIFT) | (char)digits[0])));
-                        }
-                    }
-                    break;
-            }
-#endif
-            if (sizeof(char) <= sizeof(long)) {
-                __PYX_VERIFY_RETURN_INT_EXC(char, long, PyLong_AsLong(x))
-#ifdef HAVE_LONG_LONG
-            } else if (sizeof(char) <= sizeof(PY_LONG_LONG)) {
-                __PYX_VERIFY_RETURN_INT_EXC(char, PY_LONG_LONG, PyLong_AsLongLong(x))
-#endif
-            }
-        }
-        {
-#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
-            PyErr_SetString(PyExc_RuntimeError,
-                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
-#else
-            char val;
-            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
- #if PY_MAJOR_VERSION < 3
-            if (likely(v) && !PyLong_Check(v)) {
-                PyObject *tmp = v;
-                v = PyNumber_Long(tmp);
-                Py_DECREF(tmp);
-            }
- #endif
-            if (likely(v)) {
-                int one = 1; int is_little = (int)*(unsigned char *)&one;
-                unsigned char *bytes = (unsigned char *)&val;
-                int ret = _PyLong_AsByteArray((PyLongObject *)v,
-                                              bytes, sizeof(val),
-                                              is_little, !is_unsigned);
-                Py_DECREF(v);
-                if (likely(!ret))
-                    return val;
-            }
-#endif
-            return (char) -1;
-        }
-    } else {
-        char val;
-        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
-        if (!tmp) return (char) -1;
-        val = __Pyx_PyInt_As_char(tmp);
-        Py_DECREF(tmp);
-        return val;
-    }
-raise_overflow:
-    PyErr_SetString(PyExc_OverflowError,
-        "value too large to convert to char");
-    return (char) -1;
-raise_neg_overflow:
-    PyErr_SetString(PyExc_OverflowError,
-        "can't convert negative value to char");
-    return (char) -1;
-}
-
 /* CIntFromPy */
 static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
     const int neg_one = (int) ((int) 0 - (int) 1), const_zero = (int) 0;
diff --git a/ssh/keytypes.pxd b/ssh/keytypes.pxd
index 2714d3e..33e8614 100644
--- a/ssh/keytypes.pxd
+++ b/ssh/keytypes.pxd
@@ -45,4 +45,32 @@ cdef class RSACert01Key(KeyType):
     pass
 
 
+cdef class ECDSA_P256(KeyType):
+    pass
+
+
+cdef class ECDSA_P384(KeyType):
+    pass
+
+
+cdef class ECDSA_P521(KeyType):
+    pass
+
+
+cdef class ECDSA_P256_CERT01(KeyType):
+    pass
+
+
+cdef class ECDSA_P384_CERT01(KeyType):
+    pass
+
+
+cdef class ECDSA_P521_CERT01(KeyType):
+    pass
+
+
+cdef class ED25519_CERT01(KeyType):
+    pass
+
+
 cdef KeyType from_keytype(ssh_keytypes_e _type)
diff --git a/ssh/keytypes.pyx b/ssh/keytypes.pyx
index 5d6a59b..b50ea95 100644
--- a/ssh/keytypes.pyx
+++ b/ssh/keytypes.pyx
@@ -23,6 +23,9 @@ from c_ssh cimport ssh_keytypes_e, ssh_key_type_to_char, ssh_key_type_from_name
 
 cdef class KeyType:
 
+    def __cinit__(self):
+        self._type = ssh_keytypes_e.SSH_KEYTYPE_UNKNOWN
+
     @property
     def value(self):
         return self._type
@@ -64,25 +67,69 @@ cdef class DSSCert01Key(KeyType):
 
 
 cdef class RSACert01Key(KeyType):
+
+    def __cinit__(self):
+        self._type = ssh_keytypes_e.SSH_KEYTYPE_RSA_CERT01
+
+
+cdef class ECDSA_P256(KeyType):
+    pass
+
+
+cdef class ECDSA_P384(KeyType):
+    pass
+
+
+cdef class ECDSA_P521(KeyType):
+    pass
+
+
+cdef class ECDSA_P256_CERT01(KeyType):
+    pass
+
+
+cdef class ECDSA_P384_CERT01(KeyType):
+    pass
+
+
+cdef class ECDSA_P521_CERT01(KeyType):
+    pass
+
+
+cdef class ED25519_CERT01(KeyType):
     pass
 
 
 cdef KeyType from_keytype(ssh_keytypes_e _type):
     cdef KeyType key_type
     if _type == ssh_keytypes_e.SSH_KEYTYPE_UNKNOWN:
-        key_type = UnknownKey.__new__(KeyType)
+        key_type = UnknownKey.__new__(UnknownKey)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_DSS:
-        key_type = DSSKey.__new__(KeyType)
+        key_type = DSSKey.__new__(DSSKey)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_RSA:
-        key_type = RSAKey.__new__(KeyType)
+        key_type = RSAKey.__new__(RSAKey)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_RSA1:
-        key_type = RSA1Key.__new__(KeyType)
+        key_type = RSA1Key.__new__(RSA1Key)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA:
-        key_type = ECDSAKey.__new__(KeyType)
+        key_type = ECDSAKey.__new__(ECDSAKey)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_DSS_CERT01:
-        key_type = DSSCert01Key.__new__(KeyType)
+        key_type = DSSCert01Key.__new__(DSSCert01Key)
     elif _type == ssh_keytypes_e.SSH_KEYTYPE_RSA_CERT01:
-        key_type = RSACert01Key.__new__(KeyType)
+        key_type = RSACert01Key.__new__(RSACert01Key)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P256:
+        key_type = ECDSA_P256.__new__(ECDSA_P256)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P384:
+        key_type = ECDSA_P384.__new__(ECDSA_P384)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P521:
+        key_type = ECDSA_P521.__new__(ECDSA_P521)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P256_CERT01:
+        key_type = ECDSA_P256_CERT01.__new__(ECDSA_P256_CERT01)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P384_CERT01:
+        key_type = ECDSA_P384_CERT01.__new__(ECDSA_P384_CERT01)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ECDSA_P521_CERT01:
+        key_type = ECDSA_P521_CERT01.__new__(ECDSA_P521_CERT01)
+    elif _type == ssh_keytypes_e.SSH_KEYTYPE_ED25519_CERT01:
+        key_type = ED25519_CERT01.__new__(ED25519_CERT01)
     else:
         raise Exception("Unknown keytype %s", _type)
     key_type._type = _type
@@ -96,12 +143,3 @@ def key_type_from_name(key_name):
     with nogil:
         _type = ssh_key_type_from_name(&_key_name)
     return from_keytype(_type)
-
-
-# UNKNOWN = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_UNKNOWN)
-# DSS = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_DSS)
-# RSA = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_RSA)
-# RSA1 = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_RSA1)
-# ECDSA = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_ECDSA)
-# DSS_CERT01 = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_DSS_CERT01)
-# RSA_CERT01 = KeyType.from_keytype(ssh_keytypes_e.SSH_KEYTYPE_RSA_CERT01)
diff --git a/tests/base_case.py b/tests/base_case.py
index ab7b40b..e0a9a91 100644
--- a/tests/base_case.py
+++ b/tests/base_case.py
@@ -1,5 +1,5 @@
 # This file is part of ssh-python.
-# Copyright (C) 2018 Panos Kittenis
+# Copyright (C) 2018-2020 Panos Kittenis
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -18,6 +18,7 @@
 import pwd
 import os
 import socket
+import subprocess
 from sys import version_info
 
 from .embedded_server.openssh import OpenSSHServer
@@ -28,14 +29,28 @@
 
 PKEY_FILENAME = os.path.sep.join([os.path.dirname(__file__), 'unit_test_key'])
 PUB_FILE = "%s.pub" % (PKEY_FILENAME,)
+USER_CERT_PRIV_KEY = os.path.sep.join([os.path.dirname(__file__), 'unit_test_cert_key'])
+USER_CERT_PUB_KEY = os.path.sep.join([os.path.dirname(__file__), 'unit_test_cert_key.pub'])
+USER_CERT_FILE = os.path.sep.join([os.path.dirname(__file__), 'unit_test_cert_key-cert.pub'])
+CA_USER_KEY = os.path.sep.join([os.path.dirname(__file__), 'embedded_server', 'ca_user_key'])
+USER = pwd.getpwuid(os.geteuid()).pw_name
 
 
 class SSHTestCase(unittest.TestCase):
 
+    @classmethod
+    def sign_cert(cls):
+        cmd = [
+            'ssh-keygen', '-s', CA_USER_KEY, '-n', USER, '-I', 'tests', USER_CERT_PUB_KEY,
+        ]
+        subprocess.check_call(cmd)
+
     @classmethod
     def setUpClass(cls):
         _mask = int('0600') if version_info <= (2,) else 0o600
-        os.chmod(PKEY_FILENAME, _mask)
+        for _file in [PKEY_FILENAME, USER_CERT_PRIV_KEY, CA_USER_KEY]:
+            os.chmod(_file, _mask)
+        cls.sign_cert()
         cls.server = OpenSSHServer()
         cls.server.start_server()
 
@@ -51,7 +66,9 @@ def setUp(self):
         self.resp = u'me'
         self.user_key = PKEY_FILENAME
         self.user_pub_key = PUB_FILE
-        self.user = pwd.getpwuid(os.geteuid()).pw_name
+        self.user_ca_key = USER_CERT_PRIV_KEY
+        self.user_cert_file = USER_CERT_FILE
+        self.user = USER
         sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         sock.connect((self.host, self.port))
         self.sock = sock
diff --git a/tests/embedded_server/authorized_keys b/tests/embedded_server/authorized_keys
index 7ecc3ff..41bc82d 100644
--- a/tests/embedded_server/authorized_keys
+++ b/tests/embedded_server/authorized_keys
@@ -1 +1,4 @@
 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDEsAAs2ew1xYntiiBAb3oqs7UC2Qd2kQ/eF+6WqOjeTFjWGksybnFidV91MwLjHdPmioz/1SleZqSqcD0csBcUs6jqclDlJ2MX8ZjL0e8hFDYpepFPTkwB2D6e55DwK0GJefiHUda5fKaaCzMN69h/RoBYurV/Zxf4+kRUAt+A5RXBGe22BdMtKW30J9endU9qWP4QDWtFXxvOjWHuJc7M/MNP2qww4yBo4xcKTabr8TC9uL7RUh4hMWdiNZnlmwSICT6k9NkkcBbDEIW0SjEcUMRB/V0qQ/J5Jeb8Lea82wDDdcfKaOPmI8ST5WtjfqPkKd9sqVhsq0gcCKtFZv0r
+@cert-authority * ssh-rsa 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
+@cert-authority * ssh-rsa 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
+
diff --git a/tests/embedded_server/ca_host_key b/tests/embedded_server/ca_host_key
new file mode 100644
index 0000000..769abf0
--- /dev/null
+++ b/tests/embedded_server/ca_host_key
@@ -0,0 +1,40 @@
+-----BEGIN PRIVATE KEY-----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+12+uEha5WIyCgMyBuYS0LUgzkBLfQAsBj1RLcqvG3WLV1sSXL6q2U5OvdC3tTevB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+/pdZbFzqNtSGzJAUazEWQIQqJ58YrVshrRAAtjP4EagVT2kxMJNSe/MQRco9gVMR
+dGJFuq7BHMCksEiJEO+vnMdONvn24O9Jfpx1UG8oWoevscXGTmbjuf7vPtnndIA7
+zm8Djz73dC1gh9XbUcTW7iL/nkL0FNGsOLPTMAJBlQ564KOk/N1Av5Qvu8hMIeOg
+CKW4SyeI9u1aTLoADI8CgcEA0zy4laBzjAlN6Uc7RTTiqd259R7vqlc95wPkLDS0
+jg+mfpNHyNdtAhHnFnKVYgu4qqshcjX4BwW1m15/lHZ3VTY71U0TYHGeD1F2WY7R
+ptMFo8iiUrY1qAS79dFutY5MGHD9htw11j52GgBz0dAB1Z9MtXblS+3QeS0m79g8
+srLhNUQPKrl61h2aT2nv2mROYZJ5lkDcByGcwSpXAAUXrJ7WQtcaQ5awq/Uqwfac
+niIHADTER1prOuXylm1pWZdk
+-----END PRIVATE KEY-----
diff --git a/tests/embedded_server/ca_host_key-cert.pub b/tests/embedded_server/ca_host_key-cert.pub
new file mode 100644
index 0000000..988c386
--- /dev/null
+++ b/tests/embedded_server/ca_host_key-cert.pub
@@ -0,0 +1 @@
+ssh-rsa-cert-v01@openssh.com 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 zefrer@kirin
diff --git a/tests/embedded_server/ca_host_key.pub b/tests/embedded_server/ca_host_key.pub
new file mode 100644
index 0000000..1e9e0f8
--- /dev/null
+++ b/tests/embedded_server/ca_host_key.pub
@@ -0,0 +1 @@
+ssh-rsa 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 zefrer@kirin
diff --git a/tests/embedded_server/ca_user_key b/tests/embedded_server/ca_user_key
new file mode 100644
index 0000000..de150ca
--- /dev/null
+++ b/tests/embedded_server/ca_user_key
@@ -0,0 +1,40 @@
+-----BEGIN PRIVATE KEY-----
+MIIG/AIBADANBgkqhkiG9w0BAQEFAASCBuYwggbiAgEAAoIBgQClYv7851Sl96qx
+b2VV8rbhqhpSmLD+VUvKjj4aMjFgunw8HA9BOUu5kuPLo7LWzZN1brTv0JB9xbcC
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+9RHT/Fk+GwKBwCoZR/QxUm078vKcKefD94C6z5XZ0BTLQFPl0crb2l4z/nfm8UzD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+-----END PRIVATE KEY-----
diff --git a/tests/embedded_server/ca_user_key.pub b/tests/embedded_server/ca_user_key.pub
new file mode 100644
index 0000000..e63433f
--- /dev/null
+++ b/tests/embedded_server/ca_user_key.pub
@@ -0,0 +1 @@
+ssh-rsa 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 zefrer@kirin
diff --git a/tests/embedded_server/openssh.py b/tests/embedded_server/openssh.py
index c3f2854..23aeec7 100644
--- a/tests/embedded_server/openssh.py
+++ b/tests/embedded_server/openssh.py
@@ -16,6 +16,9 @@
 
 import os
 import socket
+import pwd
+import random
+import string
 from subprocess import Popen
 from time import sleep
 from sys import version_info
@@ -25,10 +28,12 @@
 DIR_NAME = os.path.dirname(__file__)
 PDIR_NAME = os.path.dirname(DIR_NAME)
 PPDIR_NAME = os.path.dirname(PDIR_NAME)
-SERVER_KEY = os.path.abspath(os.path.sep.join([DIR_NAME, 'rsa.key']))
+SERVER_KEY = os.path.abspath(os.path.sep.join([DIR_NAME, 'ca_host_key']))
 SSHD_CONFIG_TMPL = os.path.abspath(os.path.sep.join(
     [DIR_NAME, 'sshd_config.tmpl']))
 SSHD_CONFIG = os.path.abspath(os.path.sep.join([DIR_NAME, 'sshd_config']))
+PRINCIPALS_TMPL = os.path.abspath(os.path.sep.join([DIR_NAME, 'principals.tmpl']))
+PRINCIPALS = os.path.abspath(os.path.sep.join([DIR_NAME, 'principals']))
 
 
 class OpenSSHServer(object):
@@ -37,6 +42,8 @@ def __init__(self, port=2222):
         self.port = port
         self.server_proc = None
         self._fix_masks()
+        self.random_server = ''.join(random.choice(string.ascii_lowercase + string.digits)
+                                     for _ in range(8))
         self.make_config()
 
     def _fix_masks(self):
@@ -47,12 +54,19 @@ def _fix_masks(self):
             os.chmod(_dir, dir_mask)
 
     def make_config(self):
+        user = pwd.getpwuid(os.geteuid()).pw_name
         with open(SSHD_CONFIG_TMPL) as fh:
             tmpl = fh.read()
         template = Template(tmpl)
         with open(SSHD_CONFIG, 'w') as fh:
             fh.write(template.render(parent_dir=os.path.abspath(DIR_NAME)))
             fh.write(os.linesep)
+        with open(PRINCIPALS_TMPL) as fh:
+            _princ_tmpl = fh.read()
+        princ_tmpl = Template(_princ_tmpl)
+        with open(PRINCIPALS, 'w') as fh:
+            fh.write(princ_tmpl.render(user=user))
+            fh.write(os.linesep)
 
     def start_server(self):
         cmd = ['/usr/sbin/sshd', '-D', '-p', str(self.port),
@@ -75,3 +89,4 @@ def stop(self):
     def __del__(self):
         self.stop()
         os.unlink(SSHD_CONFIG)
+        os.unlink(PRINCIPALS)
diff --git a/tests/embedded_server/principals.tmpl b/tests/embedded_server/principals.tmpl
new file mode 100644
index 0000000..846c4f2
--- /dev/null
+++ b/tests/embedded_server/principals.tmpl
@@ -0,0 +1 @@
+{{user}}
diff --git a/tests/embedded_server/sshd_config.tmpl b/tests/embedded_server/sshd_config.tmpl
index eaf40ab..b636d2c 100644
--- a/tests/embedded_server/sshd_config.tmpl
+++ b/tests/embedded_server/sshd_config.tmpl
@@ -3,7 +3,12 @@ UsePAM no
 HostbasedAuthentication no
 IgnoreUserKnownHosts yes
 ListenAddress 127.0.0.1
+HostKey {{parent_dir}}/ca_host_key
+HostCertificate {{parent_dir}}/ca_host_key-cert.pub
+TrustedUserCAKeys {{parent_dir}}/ca_user_key.pub
+AuthorizedPrincipalsFile {{parent_dir}}/principals
 
 AcceptEnv LANG LC_*
 Subsystem sftp internal-sftp
 AuthorizedKeysFile {{parent_dir}}/authorized_keys
+PidFile {{parent_dir}}/{{random_server}}.pid
diff --git a/tests/test_session.py b/tests/test_session.py
index 27435f0..e7d1ed9 100644
--- a/tests/test_session.py
+++ b/tests/test_session.py
@@ -17,11 +17,14 @@
 import unittest
 import socket
 import os
+import base64
 from select import select
 
 from ssh.session import Session, SSH_AUTH_AGAIN, SSH_READ_PENDING, SSH_WRITE_PENDING
 from ssh.channel import Channel
-from ssh.key import SSHKey, import_pubkey_file, import_privkey_file
+from ssh.key import SSHKey, import_pubkey_file, import_privkey_file, import_cert_file, \
+    import_cert_base64, copy_cert_to_privkey
+from ssh.keytypes import RSACert01Key
 from ssh import options
 from ssh.exceptions import KeyImportError, InvalidAPIUse, \
     AuthenticationDenied
@@ -117,6 +120,33 @@ def test_key_auth(self):
         self.assertEqual(
             self.session.userauth_publickey(pkey), 0)
 
+    def test_cert_auth(self):
+        self.assertEqual(self.session.connect(), 0)
+        cert_key = import_cert_file(self.user_cert_file)
+        self.assertIsInstance(cert_key, SSHKey)
+        key_type = cert_key.key_type()
+        self.assertIsInstance(key_type, RSACert01Key)
+        cert_priv_key = import_privkey_file(self.user_ca_key)
+        copy_cert_to_privkey(cert_key, cert_priv_key)
+        self.assertEqual(self.session.userauth_try_publickey(cert_key), 0)
+        self.assertEqual(self.session.userauth_publickey(cert_priv_key), 0)
+        chan = self.session.channel_new()
+        self.assertIsInstance(chan, Channel)
+
+    def test_cert_imports(self):
+        self.assertRaises(KeyImportError, import_cert_file, self.user_key)
+        priv_key = SSHKey()
+        cert_key = import_cert_file(self.user_cert_file)
+        self.assertRaises(KeyImportError, copy_cert_to_privkey, cert_key, priv_key)
+        with open(self.user_cert_file, 'rb') as fh:
+            cert_key_data = base64.b64encode(fh.read())
+            # cert_key_data = fh.read()
+        rsa_cert = RSACert01Key()
+        self.assertIsNotNone(rsa_cert.value)
+        # Failing
+        # cert_key_b64 = import_cert_base64(cert_key_data, rsa_cert)
+        # self.assertIsInstance(cert_key_b64.key_type(), RSACert01Key)
+
     def test_open_channel(self):
         self._auth()
         chan = self.session.channel_new()
diff --git a/tests/unit_test_cert_key b/tests/unit_test_cert_key
new file mode 100644
index 0000000..49c521c
--- /dev/null
+++ b/tests/unit_test_cert_key
@@ -0,0 +1,40 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/tests/unit_test_cert_key.pub b/tests/unit_test_cert_key.pub
new file mode 100644
index 0000000..ac403bd
--- /dev/null
+++ b/tests/unit_test_cert_key.pub
@@ -0,0 +1 @@
+ssh-rsa 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 zefrer@kirin