⚡️ react-native-fast-crypto

A fast implementation of Node's crypto module written in C/C++ JSI.

FastCrypto can be used as a drop-in replacement for your Web3/Crypto apps to speed up all cryptography functions.

For example, creating a Wallet using ethers.js uses complex algorithms to generate a private-key/mnemonic-phrase pair:

const start = performance.now()
const wallet = ethers.Wallet.createRandom()
const end = performance.now()
console.log(`Creating a Wallet took ${end - start}ms.`)

Without react-native-crypto 🐢:

Creating a Wallet took 31.3582738422ms

With react-native-crypto ⚡️:

Creating a Wallet took 2.47425001859ms

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Installation

React Native

yarn add react-native-fast-crypto
cd ios && pod install

Expo

expo install react-native-fast-crypto
expo prebuild

Usage

In your metro.config.js, add a module resolver to replace crypto with react-native-fast-crypto:

+const path = require('path');

 module.exports = {
+  resolver: {
+    extraNodeModules: {
+      crypto: path.resolve(__dirname, './node_modules/react-native-fast-crypto'),
+    },
+  },
   ...

Now, all imports for crypto will be resolved as react-native-fast-crypto instead.

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Sponsors

• TODO: List sponsors here

Limitations

As the library uses JSI for synchronous native methods access, remote debugging (e.g. with Chrome) is no longer possible. Instead, you should use Flipper.

Adopting at scale

react-native-fast-crypto was built at Margelo, an elite app development agency. For enterprise support or other business inquiries, contact us at hello@margelo.io!

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT