diff --git a/proto/c2se/backend/identity.proto b/proto/c2se/backend/identity.proto
index 7e51efd..3f7bf24 100644
--- a/proto/c2se/backend/identity.proto
+++ b/proto/c2se/backend/identity.proto
@@ -6,7 +6,7 @@ import "protobuf/rpc/error.proto";
 
 // subject = bet.beteran.c2se.backend.identity.Signin
 message SigninRequest {
-  string token = 1;
+  string security_code_hash = 1;
   string security_code = 2;
   string username = 3;
   string password = 4;
diff --git a/proto/c2se/frontend/identity.proto b/proto/c2se/frontend/identity.proto
index 27da9fe..6630427 100644
--- a/proto/c2se/frontend/identity.proto
+++ b/proto/c2se/frontend/identity.proto
@@ -6,7 +6,7 @@ import "protobuf/rpc/error.proto";
 
 // subject = bet.beteran.c2se.frontend.identity.Signin
 message SigninRequest {
-  string token = 1;
+  string security_code_hash = 1;
   string security_code = 2;
   string username = 3;
   string password = 4;
diff --git a/proto/ss/member/identity.proto b/proto/ss/member/identity.proto
index b86be42..c730c2e 100644
--- a/proto/ss/member/identity.proto
+++ b/proto/ss/member/identity.proto
@@ -41,7 +41,7 @@ message CaptchaRequest {
 
 message CaptchaResponse {
   message Result {
-    string token = 1;
+    string security_code_hash = 1;
     string image = 2;
   }
   optional bet.protobuf.rpc.Error error = 1;
@@ -52,7 +52,7 @@ message CaptchaResponse {
 // subject = bet.beteran.ss.member.identity.Signin
 message SigninRequest {
   bet.beteran.core.network.Client client = 1;
-  string token = 2;
+  string security_code_hash = 2;
   string security_code = 3;
   string username = 4;
   string password = 5;