diff --git a/README.md b/README.md
index f153a58..4e5598e 100644
--- a/README.md
+++ b/README.md
@@ -25,15 +25,25 @@
 * libssl-dev (for the header files)
 
 ## API
+## Globals
+### Algorithm
+* `JWT_ALGORITHM_HS256`
+* `JWT_ALGORITHM_HS384`
+* `JWT_ALGORITHM_HS512`
+* `JWT_ALGORITHM_RS256`
+* `JWT_ALGORITHM_RS384`
+* `JWT_ALGORITHM_RS512`
+
+## Functions
 ### Function: `jwtSign`
 ```cpp
-bool jwtSign(function(string/boolean) callback, table claims, string algorithm, string secret/public_key_path, string private_key_path)
+bool jwtSign(function(string/boolean) callback, table claims, JWT_ALGORITHM algorithm, string secret/private_key_path, bool is_file_path = false)
 ```
 * __callback:__ Lorem ipsum
 * __claims:__ Lorem ipsum
 * __algorithm:__ Lorem ipsum
-* __secret/public_key_path__ Lorem ipsum
-* __private_key_path__ Lorem ipsum
+* __secret/private_key_path__ Lorem ipsum
+* __is_file_path__ Lorem ipsum
 
 Returns __true__ if everything went fine, __false__ otherwise.
 
diff --git a/module/CFunctions.cpp b/module/CFunctions.cpp
index 9025526..efd5f6d 100644
--- a/module/CFunctions.cpp
+++ b/module/CFunctions.cpp
@@ -60,8 +60,16 @@ int CFunctions::sign_jwt_token(lua_State* lua_vm)
 				{
 				case JWT_ALGORITHM_HS256:
 					return jwt.sign(jwt::algorithm::hs256{ private_key });
+				case JWT_ALGORITHM_HS384:
+					return jwt.sign(jwt::algorithm::hs384{ private_key });
+				case JWT_ALGORITHM_HS512:
+					return jwt.sign(jwt::algorithm::hs512{ private_key });
 				case JWT_ALGORITHM_RS256:
 					return jwt.sign(jwt::algorithm::rs256{ "", private_key });
+				case JWT_ALGORITHM_RS384:
+					return jwt.sign(jwt::algorithm::rs384{ "", private_key });
+				case JWT_ALGORITHM_RS512:
+					return jwt.sign(jwt::algorithm::rs512{ "", private_key });
 				default: 
 					break;
 				}
@@ -158,8 +166,16 @@ int CFunctions::verify_jwt_token(lua_State* lua_vm)
 				// set verifier algorithm
 				if (std::strcmp(algorithm, "HS256") == 0)
 					verifier.allow_algorithm(jwt::algorithm::hs256{ public_key });
-				else if (std::strcmp(algorithm, "RS256") == 0)
+				if (std::strcmp(algorithm, "HS384") == 0)
+					verifier.allow_algorithm(jwt::algorithm::hs384{ public_key });
+				if (std::strcmp(algorithm, "HS512") == 0)
+					verifier.allow_algorithm(jwt::algorithm::hs512{ public_key });
+				if (std::strcmp(algorithm, "RS256") == 0)
 					verifier.allow_algorithm(jwt::algorithm::rs256{ public_key });
+				if (std::strcmp(algorithm, "RS384") == 0)
+					verifier.allow_algorithm(jwt::algorithm::rs384{ public_key });
+				if (std::strcmp(algorithm, "RS512") == 0)
+					verifier.allow_algorithm(jwt::algorithm::rs512{ public_key });
 
 				verifier.verify(decoded_jwt);