add sega auth key encode/decode in Utils, requires pyjwt

core/utils.py

@@ -1,9 +1,12 @@
-from typing import Dict, Any
+from typing import Dict, Any, Optional
 from types import ModuleType
 from twisted.web.http import Request
 import logging
 import importlib
 from os import walk
+import jwt
+from base64 import b64decode
+from datetime import datetime, timezone
 
 from .config import CoreConfig
 
@@ -60,3 +63,35 @@ class Utils:
             cls.real_title_port_ssl = cfg.title.port_ssl
         
         return cls.real_title_port_ssl
+
+def create_sega_auth_key(aime_id: int, game: str, ver: float, place_id: str, b64_secret: str, err_logger: str = 'aimedb') -> Optional[str]:
+    logger = logging.getLogger(err_logger)
+    try:
+        return jwt.encode({ "aime_id": aime_id, "game": game, "ver": ver, "place_id": place_id, "exp": int(datetime.now(tz=timezone.utc).timestamp()) + 86400 }, b64decode(b64_secret), algorithm="HS256")
+    except jwt.InvalidKeyError:
+        logger.error("Failed to encode Sega Auth Key because the secret is invalid!")
+        return None
+    except Exception as e:
+        logger.error(f"Unknown exception occoured when encoding Sega Auth Key! {e}")
+        return None
+
+def decode_sega_auth_key(token: str, b64_secret: str, err_logger: str = 'aimedb') -> Optional[Dict]:
+    logger = logging.getLogger(err_logger)
+    try:
+        return jwt.decode(token, "secret", b64decode(b64_secret), algorithms=["HS256"], options={"verify_signature": True})
+    except jwt.ExpiredSignatureError:
+        logger.error("Sega Auth Key failed to validate due to an expired signature!")
+        return None
+    except jwt.InvalidSignatureError:
+        logger.error("Sega Auth Key failed to validate due to an invalid signature!")
+        return None
+    except jwt.DecodeError as e:
+        logger.error(f"Sega Auth Key failed to decode! {e}")
+        return None
+    except jwt.InvalidTokenError as e:
+        logger.error(f"Sega Auth Key is invalid! {e}")
+        return None
+    except Exception as e:
+        logger.error(f"Unknown exception occoured when decoding Sega Auth Key! {e}")
+        return None
+    

requirements.txt

@@ -18,3 +18,4 @@ jinja2
 protobuf
 autobahn
 pillow
+pyjwt