react-native-turbo-scrypt

Fastest Scrypt library for React Native, supporting new architecture and using nitromodules for blazingly fast performance.

This library does not reimplement Scrypt, but instead simply binds Scrypt from CryptoSwift (iOS) & BouncyCastle (Android).

Usage

import {Scrypt} from 'react-native-turbo-scrypt';

const hexString = Scrypt.scrypt(
      'password',                // password: string
      'salt',                    // salt: string
       32768,                    // N: number
       8,                        // r: number
       1,                        // p: number
       32,                       // key length: number
);

The result is a hex encoded string. To decode result to a UInt8Array:

const buffer = Buffer.from(hexString, 'hex');
const uint8Array = new Uint8Array (buffer);

Installation

$ bun i react-native-turbo-scrypt

Performance

Testing on an iPhone 13 Pro Max, compared to @noble/hashes js implementation of Scrypt, we are able to achieve a 18.5s time saving with the params in the usage example. Typically in release mode, Scrypt.scrypt() takes around 150-180ms on an iPhone 13 Pro Max. On a Samsung S24 Ultra, we observe typical times of 400-500ms.

NOTICE:

We are aware of an issue on iOS devices, where in Debug apps, Scrypt.scrypt() takes approx 3-4s instead of the expected 150ms performance. This may be due to the lack of Whole-Module optimisation on debug builds. We would appreciate pull request fixing this issue.