✗ Signature mismatch For RS256 tokens, use a public key:
jwudtool decode eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...
go install github.com/youruser/jwudtool@latest Got a feature request or found a bug? Open an issue on GitHub . jwudtool tutorial
jwudtool verify --secret mysecret <token> Expected output:
Enter — a lightweight, command-line utility designed to simplify JWT inspection, manipulation, and testing. ✗ Signature mismatch For RS256 tokens, use a
jwudtool verify --pubkey public.pem <token> Need to change a claim for testing? Clone and modify:
HEADER:
Happy debugging! This tutorial is for educational purposes only. Only test tokens you own or have permission to analyze.
PAYLOAD:
"sub": "1234567890", "name": "John Doe", "iat": 1516239022
Mastering JWTs: A Step-by-Step Tutorial to jwudtool ✗ Signature mismatch For RS256 tokens
