JWT Structure & RS256 Signature Inspector
Interactive evaluation of Header, Payload Claims, and RS256 vs None-algorithm exploit defenses.
Cryptographic Token Architecture
JWT Header, Payload & RS256 Signature Inspector
1. Header (Algorithm & Type):
{
"alg": "RS256",
"typ": "JWT"
}2. Payload (Claims):
{
"sub": "usr_42",
"name": "Alice Johnson",
"role": "USER",
"exp": 1723650000,
"iss": "https://auth.corp.io"
}3. Digital Signature:
RS256(header.payload, privateKey) ✅ Authentic!