bcrypt-edge

ESM Edge/worker conversion for bcrypt.js.

Description

This is a re-implementation of Bcrypt specifically for web workers, in particular Cloudflare. The following differences can be observed from the source library:

• The package is now an ESM, so it can easily be bundled
• All async methods have been removed. These don't work in a Web Worker environment, so they were removed.
  • Perhaps there is some method of re-introducing them, but the originals relied upon process.nextTick
  • Additionally in a worker scenario, each request is theoretically isolated anyway so async isn't as impactful
• Unit tests were preserved/translated as best as they could be
  • Tests are run against the Cloudflare crypto compatibility layer via Miniflare
  • No discrepencies between the original implementation and this one have been observed

Care was taken to disturb as little as possible with the initial implementation.

Usage

Usage is similar to the original library, except it's an ESM worker module now and has no async methods.

import {
  genSaltSync,
  hashSync,
  compareSync,
  getRounds,
  getSaltSync,
} from 'bcrypt-edge';

// Hashing
const salt = bcrypt.genSaltSync(10);
const hash = bcrypt.hashSync('B4c0//', salt);

// Create Salt+Hash in one line
const hash = bcrypt.hashSync('bacon', 8);

// Comparing
bcrypt.compareSync('B4c0//', hash); // true
bcrypt.compareSync('not_bacon', hash); // false

Benchmarks

Running bcrypt-edge in Miniflare against the original bcrypt package, the benchmarks are as follows. It is very likely that platform specific inhancements could be made to improve performace of bcrypt-edge.

Library	Rounds	Hash Time
bcryptjs	8	20ms
bcrypt-edge	8	35ms
bcryptjs	9	40ms
bcrypt-edge	9	72ms
bcryptjs	10	81ms
bcrypt-edge	10	143ms
bcryptjs	11	161ms
bcrypt-edge	11	278ms
bcryptjs	12	326ms
bcrypt-edge	12	564ms
bcryptjs	13	653ms
bcrypt-edge	13	1138ms
bcryptjs	14	1316ms
bcrypt-edge	14	2266ms
bcryptjs	15	2646ms
bcrypt-edge	15	4498ms