how to decode jwt token in Node.js which is generated in java?

Question

I'm trying to decode the JWT in node server [npm install jsonwebtoken] which is created in java [io.jsonwebtoken / jjwt / 0.6.0] but getting invalid signature error.

Does anyone had experienced the same and found the solution then could you please share with the group.

in JAVA

jwtToken = Jwts.builder().setSubject(email).claim("roles", "user").setIssuedAt(new Date(currentTimeInMills)).setExpiration(new Date(expireIn)) .signWith(SignatureAlgorithm.HS256,"secretKey").compact();

in node

var jwt = require('jsonwebtoken'); var decoded = jwt.verify(jwtToken, "secretKey");

Answer 1

Is your node code defaulting to HS256 for the SignatureAlgorithm?

The error is quite clear and JWT is famously cross-platform compatible.

Verify the keys are identical on both sides, the claim objects are identical on both sides, and that the signature algorithms used are identical on both sides.