crypto: add compat logic for "DSS1" and "dss1"

In OpenSSL 1.1.0, EVP_dss1() is removed. These hash names were exposed in Node's public API, so add compatibility hooks for them. PR-URL: #16130 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Rod Vagg <[email protected]>
nodejs · Nov 13, 2017 · c42935b · c42935b
1 parent 5c24fc3
commit c42935b
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
@@ -4080,6 +4080,14 @@ SignBase::~SignBase() {
 
 SignBase::Error SignBase::Init(const char* sign_type) {
   CHECK_EQ(mdctx_, nullptr);
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+  // Historically, "dss1" and "DSS1" were DSA aliases for SHA-1
+  // exposed through the public API.
+  if (strcmp(sign_type, "dss1") == 0 ||
+      strcmp(sign_type, "DSS1") == 0) {
+    sign_type = "SHA1";
+  }
+#endif
   const EVP_MD* md = EVP_get_digestbyname(sign_type);
   if (md == nullptr)
     return kSignUnknownDigest;