scrypt-wasm

Scrypt wasm binding for nodejs and web browser

Install

$ npm i wasm-script

Usage

• Initialize

const wasm = require('wasm-scrypt')
const opts = {
  './scrypt_wasm': {
    'memory': new WebAssembly.Memory({initial: 256, limit: 256}),
    'memoryBase': 1024,
    'table': new WebAssembly.Table({initial: 0, element: 'anyfunc'}),
    'tableBase': 0,
    __wbindgen_throw: function (ptr, len) {
      return new Error(`Custom error message...`)
    },
  }
}
wasm().then((scrypt) => {
  // do kdf
  // scrypt.kdf(...)
})

• KDF

const opts = {
  N: 16384,
  r: 4,
  p: 1
}
const dklen = 8
const kdf = scrypt.kdf(pwd, 'utf8', salt, 'utf8', dklen, opts)

Benchmark

Computer: 2.2 GHz 6-Core Intel Core i7

$ node -v
v12.18.1

> [email protected] start /Users/peterlai/Desktop/Projects/js-scrypt/benchmarks
> node index.js

Scrypt JS  x 115 ops/sec ±0.52% (83 runs sampled)
Scrypt node official  x 419 ops/sec ±0.55% (92 runs sampled)
Scrypt wasm  x 106 ops/sec ±0.82% (78 runs sampled)
Scrypt: fastest is Scrypt node official