jwudtool verify --pubkey public.pem <token> Need to change a claim for testing? Clone and modify:
"alg": "HS256", "typ": "JWT"
Happy debugging! This tutorial is for educational purposes only. Only test tokens you own or have permission to analyze. jwudtool tutorial
Mastering JWTs: A Step-by-Step Tutorial to jwudtool jwudtool verify --pubkey public
jwudtool version # Output: jwudtool 0.2.0 | Command | Purpose | |---------|---------| | decode | Decode header + payload without verifying signature | | verify | Check signature using a secret or public key | | forge | Create a new token from an existing one (change claims) | | fuzz | Test token against common attacks | Tutorial: Decode a JWT Given this sample token: Only test tokens you own or have permission to analyze
HEADER:
💡 Tip: Use --pretty for colorized output. If you have the secret key ( mysecret ):