README.md

sha.js

Streamable SHA1 hash in pure javascript.

Example

var createHash = require('sha.js')

var sha1 = createHash('sha1')
var sha256 = createHash('sha256')
var sha512 = createHash'sha512')

var h = sha1.update('abc', 'utf8').digest('hex')
console.log(h) //a9993e364706816aba3e25717850c26c9cd0d89d

supported hashes

sha.js currently implements:

• sha1

• sha256

• sha512

Note

Note, this doesn't actually implement a stream, but wrapping this in a stream is trivial. but is does update incrementally, so you can hash things larger than ram, and also, since it reuses the typedarrays, it uses a constant amount of memory (except when using base64 or utf8 encoding, see code comments)

Acknowledgements

This work is derived from Paul Johnston's ["A JavaScript implementation of the Secure Hash Algorithm"] (http://pajhome.org.uk/crypt/md5/sha1.html)

License

MIT