choskim / csrf-tokens

primary logic behind csrf tokens

csrf-tokens

Logic behind CSRF token creation and verification. Read Understanding-CSRF for more information on CSRF. Use this module to create custom CSRF middleware and what not.

Install

$ npm install csrf-tokens

API

var tokens = require('csrf-tokens')(options)

var secret = tokens.secretSync()
var token  = tokens.create(secret)
var valid  = tokens.verify(secret, token)

Options

• secretLength: 24 - the byte length of the secret key
• saltLength: 8 - the string length of the salt
• tokensize: (secret, salt) => token - a custom token creation function

tokens.secret([cb])

Asynchronously create a new secret of length secretLength. If cb is not defined, a promise is returned. You don't have to use this.

tokens.secret().then(function (secret) {

})

tokens.secret(function (err, secret) {

})

var secret = tokens.secretSync()

Synchronous version of tokens.secret()

var token = tokens.token(secret)

Create a CSRF token based on a secret. This is the token you pass to clients.

var valid = tokens.verify(secret, token)

Check whether a CSRF token is valid based on a secret. If it's not valid, you should probably throw a 403 error.

License (MIT)