jwt-easy

Jwt easy - Json Web Token Utils

How to use it?

Basic Usage

[ Jwt() ]

    const Jwt = require('jwt-easy')

    let payload = {
        username: 'charliejuc',		
        exp: 1 * 60 * 1000 //Time or date in milliseconds
    }	

    let secret = 'My secret key to encrypt jwt'

    let options = {
        secret: secret,
        ttl: true 
        /*
            If ttl is true, payload.exp will be interpreted as the time 
            to live in milliseconds, otherwise payload.exp will be a 
            date to expire in milliseconds
        */
    }

    let jwt = Jwt.create(payload, options)
    //eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VybmFtZSI6ImNoYXJsaWVqdWMiLCJleHAiOjYwMDAwfQ==.4mjVjW5zP6US4gfOyJKr5nmgA9bDMz5Hph23fG2RTgc=

    let decoded = Jwt.decode(payload, secret)	
    /*{ 
        header: { typ: 'JWT', alg: 'HS256' },		
  		payload: { username: 'charliejuc', exp: 1402129336809 } 
  	}*/

Token Validation

    let payload = {
        username: 'charliejuc',		
        exp: 1441138682063
    }

    let secret = 'My secret key to encrypt jwt'

    let options = {
        secret: secret
    }

    let jwt = Jwt.create(payload, options)

    Jwt.isValid(jwt, secret) //It check whether jwt is a valid json web token
    //return true

    Jwt.isValid(jwt, 'other pass')
    //return false

    Jwt.isValid('Random string', secret)
    //return false

Token Expired

Valid only if you have defined 'exp' property in payload

    
    let payload = {
        username: 'charliejuc',		
        exp: 1 * 60 * 1000
    }	

    let secret = 'My secret key to encrypt jwt'

    let options = {
        secret: secret,
        ttl: true 
    }

    let jwt = Jwt.create(payload, options)

    Jwt.expired(jwt, secret)
    //return true if time to live is over

Get a Specific Property at Jwt

    let payload = {
        username: 'charliejuc',	
        other: 'another',
        exp: 1441138682063
    }

    let secret = 'My secret key to encrypt jwt'

    let options = {
        secret: secret
    }

    let jwt = Jwt.create(payload, options)

    let property = 'username'

    let fragment = 'payload' //Can be payload or header

    Jwt.resolveProperty(jwt, secret, property, fragment)
    //return charliejuc

    Jwt.resolveProperty(jwt, secret, 'other', fragment)
    //return another