react-native-securerandom

A library to generate cryptographically-secure random bytes. Uses SecRandomCopyBytes on iOS, SecureRandom on Android and System.Security.Cryptography.RandomNumberGenerator on Windows.

Usage

The library exports a single function:

generateSecureRandom(length: number) => Promise<Uint8Array>

Takes a length, the number of bytes to generate, and returns a Promise that resolves with a Uint8Array.

import { generateSecureRandom } from 'react-native-securerandom';

generateSecureRandom(12).then(randomBytes => console.log(randomBytes));

Installation

$ yarn add react-native-securerandom

Automatic linking with react-native link

$ react-native link react-native-securerandom

Manual linking

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-securerandom and add RNSecureRandom.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNSecureRandom.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import net.rhogan.rnsecurerandom.RNSecureRandomPackage; to the imports at the top of the file
• Add new RNSecureRandomPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-securerandom'
   project(':react-native-securerandom').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-securerandom/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-securerandom')
   

Windows

See react-native-windows

1. In Visual Studio add node_modules/react-native-securerandom/windows/RNSecureRandom.sln folder to your solution, and reference from your app.
2. Open up your app's MainPage.cs

• Add using Net.Rhogan.RNSecureRandom.RNSecureRandom; to the usings at the top of the file
• Add new RNSecureRandomPackage() to the List<IReactPackage> returned by the Packages method