tweetnacl-auth

HMAC-SHA-512-256 for TweetNacl.js
=================================

Implementation of
(requires TweetNaCl.js).

Written in 2014 by Dmitry Chestnykh. Public domain.

![Build Status
](https://travis-ci.org/dchest/tweetnacl-auth-js)

Installation
------------

Via NPM:

$ npm install tweetnacl-auth

or just download nacl-auth.js or nacl-auth.min.js and include it after
TweetNaCl.js:

``html


`

If using a CommonJS environment, such as Node.js, you can import it into nacl
namespace:

`javascript
var nacl = require('tweetnacl');
nacl.auth = require('tweetnacl-auth');
`


Usage
-----

$3

Authenticates the given message with the secret key.
(In other words, returns HMAC-SHA-512-256 of the message under the key.)

$3

Returns HMAC-SHA-512 (without truncation) of the message under the key

$3

Length of authenticator returned by nacl.auth.

$3

Length of authenticator returned by nacl.auth.full.

$3

Length of key for nacl.auth and nacl.auth.full` (key length is currently not
enforced).