@korekoi/react-native-get-random-values

---


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- 🫳 Drop-in replacement for crypto.getRandomValues
- ⚡ Uses JSI for faster operations between Native and JS
- 🔒 Native C++ secure randomization using libsodium

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``sh
npm install @korekoi/react-native-get-random-values
`

#### Dependencies

This library needs these dependencies to be installed in your project before you can use it:

`sh
npm install react-native-nitro-modules
`

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`typescript
import "@korekoi/react-native-get-random-values"

const array = new Uint8Array(32);
global.crypto.getRandomValues(array);
``

> See the example app

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The most downloaded and probably the only available library to polyfill this method (until now) has been LinusU/react-native-get-random-values, but our solution has a couple improvements:

- JSI, Native and JavaScript communicate through a memory reference and not by serializing data in Base64 back-and-forth, which results in faster operations
- Randomization is made using libsodium for both iOS and Android
- instead of Java SecureRandom for Android and Objective-C SecRandomCopyBytes?language=objc) or Swift SecRandomCopyBytes) for iOS

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Percentage represents how much faster JSI is compared to B64

| iOS | iOS Simulator | Android |
| ---------------------------------------------------------------------------- | --------------------------------------------------------------------------- | -------------------------- |
| | | Feel free to open an issue |
| iPhone 13 on iOS 17 | iPhone 16 Pro Simulator, iOS 18, running on an MacBook Air M1 2020 16GB ram | |
| 10k loops at 65535 bytes with Base 64 crashed the app | | |

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- Get started with the development of the module