Add server.getPublicKey implementation

cpp/opaque-rust.cpp

@@ -953,6 +953,8 @@ ::rust::repr::PtrLen cxxbridge1$opaque_finish_client_login(::OpaqueFinishClientL
 
 void cxxbridge1$opaque_create_server_setup(::rust::String *return$) noexcept;
 
+::rust::repr::PtrLen cxxbridge1$opaque_get_server_public_key(::rust::String *data, ::rust::String *return$) noexcept;
+
 ::rust::repr::PtrLen cxxbridge1$opaque_create_server_registration_response(::OpaqueCreateServerRegistrationResponseParams *params, ::OpaqueCreateServerRegistrationResponseResult *return$) noexcept;
 
 ::rust::repr::PtrLen cxxbridge1$opaque_start_server_login(::OpaqueStartServerLoginParams *params, ::OpaqueStartServerLoginResult *return$) noexcept;
@@ -1006,6 +1008,15 @@ ::rust::String opaque_create_server_setup() noexcept {
   return ::std::move(return$.value);
 }
 
+::rust::String opaque_get_server_public_key(::rust::String data) {
+  ::rust::MaybeUninit<::rust::String> return$;
+  ::rust::repr::PtrLen error$ = cxxbridge1$opaque_get_server_public_key(&data, &return$.value);
+  if (error$.ptr) {
+    throw ::rust::impl<::rust::Error>::error(error$);
+  }
+  return ::std::move(return$.value);
+}
+
 ::OpaqueCreateServerRegistrationResponseResult opaque_create_server_registration_response(::OpaqueCreateServerRegistrationResponseParams params) {
   ::rust::ManuallyDrop<::OpaqueCreateServerRegistrationResponseParams> params$(::std::move(params));
   ::rust::MaybeUninit<::OpaqueCreateServerRegistrationResponseResult> return$;

cpp/opaque-rust.h

@@ -884,6 +884,8 @@ ::std::unique_ptr<::OpaqueFinishClientLoginResult> opaque_finish_client_login(::
 
 ::rust::String opaque_create_server_setup() noexcept;
 
+::rust::String opaque_get_server_public_key(::rust::String data);
+
 ::OpaqueCreateServerRegistrationResponseResult opaque_create_server_registration_response(::OpaqueCreateServerRegistrationResponseParams params);
 
 ::OpaqueStartServerLoginResult opaque_start_server_login(::OpaqueStartServerLoginParams params);

example/ios/Podfile.lock

@@ -329,7 +329,7 @@ PODS:
   - React-jsinspector (0.71.6)
   - React-logger (0.71.6):
     - glog
-  - react-native-opaque (0.2.4):
+  - react-native-opaque (0.2.7):
     - React-Core
   - React-perflogger (0.71.6)
   - React-RCTActionSheet (0.71.6):
@@ -606,7 +606,7 @@ SPEC CHECKSUMS:
   React-jsiexecutor: 7894956638ff3e00819dd3f9f6f4a84da38f2409
   React-jsinspector: d5ce2ef3eb8fd30c28389d0bc577918c70821bd6
   React-logger: 9332c3e7b4ef007a0211c0a9868253aac3e1da82
-  react-native-opaque: b1da36aedd83aedd57a032f87ebd45fd1e7c9de8
+  react-native-opaque: f384271b45bffee93b0cd3d30987043a2d4b2ed5
   React-perflogger: 43392072a5b867a504e2b4857606f8fc5a403d7f
   React-RCTActionSheet: c7b67c125bebeda9fb19fc7b200d85cb9d6899c4
   React-RCTAnimation: c2de79906f607986633a7114bee44854e4c7e2f5

example/src/OpaqueTests.ts

@@ -71,6 +71,9 @@ test('full registration & login flow', () => {
 
   expect(registrationExportKey).toEqual(loginExportKey);
   expect(registrationServerStaticPublicKey).toEqual(loginServerStaticPublicKey);
+  expect(loginServerStaticPublicKey).toEqual(
+    opaque.server.getPublicKey(serverSetup)
+  );
 
   const { sessionKey: serverSessionKey } = opaque.server.finishLogin({
     serverLoginState,
@@ -728,3 +731,25 @@ describe('server.finishLogin', () => {
     );
   });
 });
+
+describe('server.getPublicKey', () => {
+  test('empty string', () => {
+    expect(() => opaque.server.getPublicKey('')).toThrow(
+      'opaque protocol error at "deserialize serverSetup"; Internal error encountered'
+    );
+  });
+  test('invalid encoding', () => {
+    expect(() => opaque.server.getPublicKey('a')).toThrow(
+      'base64 decoding failed at "serverSetup"; Encoded text cannot have a 6-bit remainder.'
+    );
+  });
+  test('incomplete server setup string', () => {
+    expect(() =>
+      opaque.server.getPublicKey(
+        'pdT3ISgoWCP1G1lOTpU6uopNEMabryz4N3d1R-dRmF2jmigPsYk-aOL4J0cpPpqBXzEc900G7dZgIxjjzkItIbfzzo9cSh92xq7XZjuvlSs21BDddsKC5TmvRP8QT-wCucEXnwDy2aDLJmzZl-tRHb2Mz5my_vGZeO3KeNS_wA'
+      )
+    ).toThrow(
+      'opaque protocol error at "deserialize serverSetup"; Internal error encountered'
+    );
+  });
+});

package.json

@@ -167,6 +167,6 @@
     ]
   },
   "dependencies": {
-    "@serenity-kit/opaque": "^0.7.0"
+    "@serenity-kit/opaque": "^0.8.0"
   }
 }

rust/src/lib.rs

@@ -177,6 +177,8 @@ mod opaque_ffi {
 
         fn opaque_create_server_setup() -> String;
 
+        fn opaque_get_server_public_key(data: String) -> Result<String>;
+
         fn opaque_create_server_registration_response(
             params: OpaqueCreateServerRegistrationResponseParams,
         ) -> Result<OpaqueCreateServerRegistrationResponseResult>;
@@ -207,6 +209,12 @@ fn opaque_create_server_setup() -> String {
     BASE64.encode(setup.serialize())
 }
 
+fn opaque_get_server_public_key(data: String) -> Result<String, Error> {
+    let server_setup = decode_server_setup(data)?;
+    let pub_key = server_setup.keypair().public().serialize();
+    Ok(BASE64.encode(pub_key))
+}
+
 fn opaque_create_server_registration_response(
     params: OpaqueCreateServerRegistrationResponseParams,
 ) -> Result<OpaqueCreateServerRegistrationResponseResult, Error> {

src/index.ts

@@ -86,6 +86,8 @@ export namespace client {
 
 declare function opaque_createServerSetup(): string;
 
+declare function opaque_getServerPublicKey(serverSetup: string): string;
+
 declare function opaque_createServerRegistrationResponse(
   params: server.CreateRegistrationResponseParams
 ): server.CreateRegistrationResponseResult;
@@ -132,6 +134,7 @@ export namespace server {
   };
 
   export const createSetup = opaque_createServerSetup;
+  export const getPublicKey = opaque_getServerPublicKey;
   export const createRegistrationResponse =
     opaque_createServerRegistrationResponse;
   export const startLogin = opaque_startServerLogin;

yarn.lock

@@ -2048,10 +2048,10 @@
     conventional-recommended-bump "^6.1.0"
     semver "7.3.8"
 
-"@serenity-kit/opaque@^0.7.0":
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/@serenity-kit/opaque/-/opaque-0.7.0.tgz#58e90e4c56a3152e664670ef2876b833f96832d5"
-  integrity sha512-5CikruVTY7EAAhLvHHU139OOaWRIIq58HhDRjpPDZOS8gAaF9qSfZRyR4kuEqGZWOuNjUtilDwD2G3Nc3YlJzw==
+"@serenity-kit/opaque@^0.8.0":
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/@serenity-kit/opaque/-/opaque-0.8.0.tgz#82ef4056238611514c0a1e2072015b39a1732dd5"
+  integrity sha512-xZ4HV++Q6Ej2lss9oECMxCCPgRgEXJ/6iqOaqKJO3mRrW6huIaM3zGre47jQEQk37SgSpDBY1mYyw5n+JvwTxA==
 
 "@sideway/address@^4.1.3":
   version "4.1.4"