python auth_error ai_generated true

jose.exceptions.JWSSignatureError: Signature verification failed

ID: python/fastapi-jwt-decode-invalid-signature

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-06-04First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —
5.x active — — —

Root Cause

JWT was signed with a different secret/key than the one used to verify, or the algorithm was mismatched.

generic

中文

JWT 使用的签名密钥与验证时的密钥不同，或算法不匹配。

Workarounds

  1. 95% success 
    payload = jwt.decode(token, SECRET_KEY, algorithms=['HS256'])
  2. 93% success 
    SECRET_KEY = os.environ['JWT_SECRET']  # same in issuer and verifier

Dead Ends

Common approaches that don't work:

  1. 99% fail

    Disables auth entirely; severe security hole.

  2. 98% fail

    Accepts invalid tokens; security bypass.