Create encription_utils.py

encription_utils.py

@@ -0,0 +1,29 @@
+"""
+Flare – Fernet şifreleme yardımcıları
+"""
+
+import base64, os
+from cryptography.fernet import Fernet, InvalidToken
+
+_ENV_KEY = "FLARE_TOKEN_KEY"
+
+def _get_key() -> Fernet:
+    key = os.getenv(_ENV_KEY)
+    if not key:
+        raise RuntimeError(f"{_ENV_KEY} environment variable not set")
+    return Fernet(key.encode())
+
+def encrypt(plain: str) -> str:
+    f = _get_key()
+    token = f.encrypt(plain.encode()).decode()
+    return f"enc:{token}"
+
+def decrypt(enc_value: str) -> str:
+    if not enc_value.startswith("enc:"):
+        return enc_value  # düz metin
+    token = enc_value.split("enc:", 1)[1]
+    f = _get_key()
+    try:
+        return f.decrypt(token.encode()).decode()
+    except InvalidToken:
+        raise RuntimeError("Invalid encryption key or token")