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react-native-keystore

v1.1.4

Published

library for using signing via secure enclave (iOS) and trusted execution environment (Android) using biometric authentication

Downloads

50

Readme

react-native-keystore

Getting started

$ npm install react-native-keystore --save

Mostly automatic installation

$ react-native link react-native-keystore

Manual installation

iOS

  1. In XCode, in the project navigator, right click LibrariesAdd Files to [your project's name]
  2. Go to node_modulesreact-native-keystore and add SCKeystore.xcodeproj
  3. In XCode, in the project navigator, select your project. Add libSCKeystore.a to your project's Build PhasesLink Binary With Libraries
  4. Run your project (Cmd+R)<

Android

  1. Open up android/app/src/main/java/[...]/MainActivity.java
  • Add import com.step.security.keystore.SCKeystorePackage; to the imports at the top of the file
  • Add new SCKeystorePackage() to the list returned by the getPackages() method
  1. Append the following lines to android/settings.gradle:
    include ':react-native-keystore'
    project(':react-native-keystore').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-keystore/android')
    include ':react-native-keystore:lib'
    project(':react-native-keystore:lib').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-keystore/android/lib')
  2. Insert the following lines inside the dependencies block in android/app/build.gradle:
      compile project(':react-native-keystore:lib')

Usage

import { KeyStore } from 'react-native-keystore'
let keyId = "my-awesome-key" // alias used to access this key in the future
// Generate a new signing key, will return public key as in JWK format
let publicKey = await KeyStore.generate(
  keyId,
  {
    authenticated: true, // should this key be guarded by passcode / biometric security?
    algorithm: 'ES256' // Figures out what curve to use for generating EC keypair
  }
)
// Will return signed JWT
const jwt = await KeyStore.signJWT(keyId, {
    // You can include whatever headers you need here, but alg is required
    headers: {
        alg: 'ES256' // Signing algorithm to use, needs to be supported by the key generated in previous step
    },
    // JWT Payload that you want signed
    payload: {
        sub: "I'm a little teapot"
    },
    // Shown in security prompt
    reason: "Need to sign my teapot"
})
// will throw an exception if verification fails
let valid = await KeyStore.verifyJWT(jwt)