1 files changed, 16 insertions, 2 deletions
diff --git a/include/grpc++/credentials.h b/include/grpc++/credentials.h
index c677cc3e0a..2ac3eec95c 100644
--- a/include/grpc++/credentials.h
+++ b/include/grpc++/credentials.h
@@ -50,8 +50,8 @@ class Credentials {
 
  protected:
   friend std::unique_ptr<Credentials> CompositeCredentials(
-    const std::unique_ptr<Credentials>& creds1,
-    const std::unique_ptr<Credentials>& creds2);
+      const std::unique_ptr<Credentials>& creds1,
+      const std::unique_ptr<Credentials>& creds2);
 
   virtual SecureCredentials* AsSecureCredentials() = 0;
 
@@ -105,6 +105,20 @@ std::unique_ptr<Credentials> ServiceAccountCredentials(
     const grpc::string& json_key, const grpc::string& scope,
     std::chrono::seconds token_lifetime);
 
+// Builds JWT credentials.
+// json_key is the JSON key string containing the client's private key.
+// token_lifetime is the lifetime of each Json Web Token (JWT) created with
+// this credentials.  It should not exceed grpc_max_auth_token_lifetime or
+// will be cropped to this value.
+std::unique_ptr<Credentials> JWTCredentials(
+    const grpc::string& json_key, std::chrono::seconds token_lifetime);
+
+// Builds refresh token credentials.
+// json_refresh_token is the JSON string containing the refresh token along
+// with a client_id and client_secret.
+std::unique_ptr<Credentials> RefreshTokenCredentials(
+    const grpc::string& json_refresh_token);
+
 // Builds IAM credentials.
 std::unique_ptr<Credentials> IAMCredentials(
     const grpc::string& authorization_token,