Note: only the asynchronous API is supported, due to the limitations of having to go over the RCTBridge, and there being no secure RNG in JavaScriptCore (Math.random is a bit of a joke in the industry)
var randomBytes = require('react-native-randombytes')
// synchronous API
// uses SJCL
var rand = randomBytes(4)
// asynchronous API
// uses iOS-side SecRandomCopyBytes
randomBytes(4, (err, bytes) => {
console.log(bytes.toString('hex'))
})rnpm link-
Drag RNRandomBytes.xcodeproj from node_modules/react-native-randombytes into your XCode project.
-
Click on the project in XCode, go to Build Phases, then Link Binary With Libraries and add
libRNRandomBytes.a
Confused? See an example with screenshots here
- Update Gradle Settings
// file: android/settings.gradle
...
include ':randombytes', ':app'
project(':randombytes').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-randombytes/app')- Update Gradle Build
// file: android/app/build.gradle
...
dependencies {
...
compile project(':randombytes')
}- Register React Package
...
import com.bitgo.randombytes.RandomBytesPackage // import
public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
private ReactInstanceManager mReactInstanceManager;
private ReactRootView mReactRootView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mReactRootView = new ReactRootView(this);
mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(getApplication())
.setBundleAssetName("index.android.bundle")
.setJSMainModuleName("index.android")
.addPackage(new MainReactPackage())
.addPackage(new RandomBytesPackage()) // register package here
.setUseDeveloperSupport(BuildConfig.DEBUG)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();
mReactRootView.startReactApplication(mReactInstanceManager, "AwesomeProject", null);
setContentView(mReactRootView);
}
...
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