blake2b-wasm

Blake2b implemented in WASM

npm install blake2b-wasm

Works in browsers that support WASM and Node.js 8+.

Usage

var blake2b = require('blake2b-wasm')

if (!blake2b.SUPPORTED) {
  console.log('WebAssembly not supported by your runtime')
}

blake2b.ready(function (err) {
  if (err) throw err

  var hash = blake2b()
    .update(Buffer.from('hello')) // pass in a buffer or uint8array
    .update(Buffer.from(' '))
    .update(Buffer.from('world'))
    .digest('hex')

  console.log('Blake2b hash of "hello world" is %s', hash)
})

API

var hash = blake2b()

Create a new hash instance

hash.update(data)

Update the hash with a new piece of data. data should be a buffer or uint8array.

var digest = hash.digest([enc])

Digest the hash.

Browser demo

There is a browser example included in example.html and example.js.

Contributing

The bulk of this module is implemented in WebAssembly in the blake2b.wat file. The format of this file is S-Expressions that can be compiled to their binary WASM representation by doing

# also available as `npm run compile`
wast2wasm blake2b.wat -o blake2b.wasm

If you do not have wast2wasm installed follow the instructions here, https://github.com/WebAssembly/wabt

License

MIT