JWT Utility for Node.js

This utility can be used to generate and parse JWTs (JSON Web Tokens).

Supported Algorithms

• HS256
• HS384
• HS512

Utility Methods

Method	Arguments	Description
getFactory	String	Set algorithm to be used to generate the JWT and returns an instance of Factory
getParser		Returns an instance of Parser which can be used to parse and verify a JWT

Generating a Token

const JWTUtility = require('@abskmj/jwt-utility');

let jwt = JWTUtility.getFactory('HS256')
    .setIssuer('AuthServer')
    .setSubject('Login')
    .setExpiry(10)
    .setClaims({
        user: 'testUser',
        name: 'Test User'
    })
    .sign('secret key');

Factory Instance Methods

Method	Arguments	Description
setIssuer	String	Set iss claim value.
setSubject	String	Set sub claim value.
setAudience	String	Set aud claim value.
setExpiry	Number	Set exp claim value, value will be current epoch time in seconds + seconds passed as argument.
setClaims	JSON	Set the custom data that will be part of the JWT.
sign	String	Generate the JWT using the secret key passed

Parsing a Token

const JWTUtility = require('@abskmj/jwt-utility');

let data = JWTUtility.getParser()
    .validateIssuer('AuthServer')
    .validateSubject('Login')
    .parse(jwt, 'secret key');

/*
data:
{ 
    headers: {
        alg: 'HS256',
        typ: 'JWT'
    },
    claims: {
        user: 'testUser',
        name: 'Test User',
        iat: 1512555172,
        iss: 'AuthServer',
        sub: 'Login',
        exp: 1512555182
    }
}

*/    

Parser Instance Methods

Method	Arguments	Description
validateIssuer	String	Validate iss claim value.
validateSubject	String	Validate sub claim value.
validateAudience	String	Validate aud claim value.
validateExpiry	Number	Validate exp claim value, value validated against current epoch time in seconds + seconds passed as argument.
parse	String, String	Set JWT token and key used to verify the token

Further Development

Support for RS256, RS384, RS512 is not planned yet. Please get in touch with the developer, if you wish to request any new functionality or bug fix.