diff --git a/src/plugins/c/c_service_client_plugin.cpp b/src/plugins/c/c_service_client_plugin.cpp
index 31d15c6..430aa6c 100644
--- a/src/plugins/c/c_service_client_plugin.cpp
+++ b/src/plugins/c/c_service_client_plugin.cpp
@@ -430,4 +430,16 @@ CServiceClientPlugin::GenerateHeaderGuardStart(Service::Ptr service)
     return ss.str();
 }
 
+std::string
+CServiceClientPlugin::GenerateHeaderExamples(Service::Ptr service)
+{
+    return "";
+}
+
+std::string
+CServiceClientPlugin::GenerateSourceExamples(Service::Ptr service)
+{
+    return "";
+}
+
 }// namespace tqcq
diff --git a/src/plugins/c/c_service_client_plugin.h b/src/plugins/c/c_service_client_plugin.h
index 00fd0cf..fac5faf 100644
--- a/src/plugins/c/c_service_client_plugin.h
+++ b/src/plugins/c/c_service_client_plugin.h
@@ -39,6 +39,9 @@ protected:
     std::string GenerateSourceSendFunctionDefinition(Service::Ptr service);
 
     std::string GenerateSourceDispatchFunctionDefinition(Service::Ptr service);
+
+    std::string GenerateHeaderExamples(Service::Ptr service);
+    std::string GenerateSourceExamples(Service::Ptr service);
 };
 
 }// namespace tqcq
diff --git a/src/plugins/c/c_service_server_plugin.cpp b/src/plugins/c/c_service_server_plugin.cpp
index c4d7fc3..b8b166c 100644
--- a/src/plugins/c/c_service_server_plugin.cpp
+++ b/src/plugins/c/c_service_server_plugin.cpp
@@ -38,10 +38,13 @@ std::string
 CServiceServerPlugin::GenerateHeaderStructAPIStart(Service::Ptr service)
 {
     std::stringstream ss;
+    ss << "/** api examples" << std::endl;
     for (const auto& rpc : service->rpcs()) {
         auto crpc = CRPCServer::Create(rpc);
         ss << crpc->GenerateAPITypedef(service->id());
     }
+    ss << " * api examples" << std::endl;
+    ss << " */ " << std::endl;
     ss << std::endl;
 
     ss << "typedef struct "
diff --git a/src/plugins/c/rpcs/crpc_server.cpp b/src/plugins/c/rpcs/crpc_server.cpp
index 1e750dd..29e1f64 100644
--- a/src/plugins/c/rpcs/crpc_server.cpp
+++ b/src/plugins/c/rpcs/crpc_server.cpp
@@ -115,7 +115,7 @@ CRPCServer::GenerateAPITypedef(std::string service_id) const
 {
     std::stringstream ss;
     // ss << "typedef int32_t (*" << service_id << "_API_"<< id() << "_Type)(const " << request_id() << " *request, " << response_id() << " *response);\n";
-    ss << "int32_t RPCSM_" << id() << "_API_Impl" << "(const " << request_id() << " *request, " << response_id() << " *response);\n";;
+    ss << "int32_t YOUR_PREFIX_" << id() << "_API_Impl" << "(const " << request_id() << " *request, " << response_id() << " *response);\n";;
     return ss.str();
 }
 
diff --git a/src/test.proto b/src/test.proto
index b7c0ff9..3ec1a34 100644
--- a/src/test.proto
+++ b/src/test.proto
@@ -81,6 +81,18 @@ message SMSymmetricResponse {
   string out_data = 3;
 }
 
+message SM2_3_Request {
+  string ecc_pubkey = 1;
+  string ecc_prikey = 2;
+  string in_data = 3;
+}
+
+message SM2_3_Response {
+  int32 code = 1;
+  string msg = 2;
+
+  string out_data = 3;
+}
 
 service DeviceService {
   rpc Init(EmptyRequest) returns (StatusResponse) {}
@@ -100,6 +112,11 @@ service DeviceService {
   rpc GenerateSignatureByExternalPrivateKey(GenerateSignatureByExternalPrivateKeyRequest) returns (SingleDataResponse) {}
   rpc VerifySignature(VerifySignatureRequest) returns (StatusResponse) {}
 
+  rpc SM2_3_Encrypt_ExternalPubkey(SM2_3_Request) returns (SM2_3_Response) {}
+  rpc SM2_3_Decrypt_ExternalPrikey(SM2_3_Request) returns (SM2_3_Response) {}
+  rpc SM2_3_Decrypt_InternalPrikey(SM2_3_Request) returns (SM2_3_Response) {}
+  rpc SM2_3_Decrypt_InternalCryptPrikey(SM2_3_Request) returns (SM2_3_Response) {}
+
   rpc SM1Encrypt(SMSymmetricRequest) returns (SMSymmetricResponse) {}
   rpc SM1Decrypt(SMSymmetricRequest) returns (SMSymmetricResponse) {}
   rpc SM4Encrypt(SMSymmetricRequest) returns (SMSymmetricResponse) {}