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\

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

With Cocoapods

• Add pod 'RNSecureRandom', :path => '../node_modules/react-native-securerandom' to your Podfile (changing your node_modules path as appropriate)
• Run pod install from the same directory as your Podfile

Without Cocoapods

• In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
• Go to node_modules ➜ react-native-securerandom and add RNSecureRandom.xcodeproj
• In XCode, in the project navigator, select your project. Add libRNSecureRandom.a to your project's Build Phases ➜ Link Binary With Libraries

Android

• 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
• 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')

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

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

Windows

See react-native-windows

• In Visual Studio add node_modules/react-native-securerandom/windows/RNSecureRandom.sln folder to your solution, and reference from your app.
• 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