jwt-simple

JWT(JSON Web Token) encode and decode module for node.js.

Install

$ npm install jwt-simple

Usage

1var jwt = require('jwt-simple');
2var payload = { foo: 'bar' };
3var secret = 'xxx';
4
5// HS256 secrets are typically 128-bit random strings, for example hex-encoded:
6// var secret = Buffer.from('fe1a1915a379f3be5394b64d14794932', 'hex')
7
8// encode
9var token = jwt.encode(payload, secret);
10
11// decode
12var decoded = jwt.decode(token, secret);
13console.log(decoded); //=> { foo: 'bar' }

decode params

1/*
2 * jwt.decode(token, key, noVerify, algorithm)
3 */
4
5// decode, by default the signature of the token is verified
6var decoded = jwt.decode(token, secret);
7console.log(decoded); //=> { foo: 'bar' }
8
9// decode without verify the signature of the token,
10// be sure to KNOW WHAT ARE YOU DOING because not verify the signature
11// means you can't be sure that someone hasn't modified the token payload
12var decoded = jwt.decode(token, secret, true);
13console.log(decoded); //=> { foo: 'bar' }
14
15// decode with a specific algorithm (not using the algorithm described in the token payload)
16var decoded = jwt.decode(token, secret, false, 'HS256');
17console.log(decoded); //=> { foo: 'bar' }

Algorithms

By default the algorithm to encode is HS256.

The supported algorithms for encoding and decoding are HS256, HS384, HS512 and RS256.

1// encode using HS512
2jwt.encode(payload, secret, 'HS512')