react-native-keychain

Keychain Access for React Native. Currently functionality is limited to just storing internet and generic passwords.

New 2.0.0 with improved android implementation

The KeychainModule will now automatically use the appropriate CipherStorage implementation based on API level:

• API level 16-22 will en/de crypt using Facebook Conceal
• API level 23+ will en/de crypt using Android Keystore

Encrypted data is stored in SharedPreferences.

Installation

1 . $ npm install --save react-native-keychain

or

$ yarn add react-native-keychain

2 . $ react-native link react-native-keychain and check MainApplication.java to verify the package was added.

3 .  rebuild your project

• on Android, the setInternetCredentials(server, username, password) call will be resolved as call to setGenericPassword(username, password, server). Use the server argument to distinguish between multiple entries.

Check out the "releases" tab for breaking changes and RN version compatibility. v1.0.0 is for RN >= 0.40

❗ Enable Keychain Sharing entitlement for iOS 10

For iOS 10 you'll need to enable the Keychain Sharing entitlement in the Capabilities section of your build target. (See screenshot). Otherwise you'll experience the error shown below.

Error: {
    code = "-34018";
    domain = NSOSStatusErrorDomain;
    message = "The operation couldn\U2019t be completed. (OSStatus error -34018.)";
}

Usage

See KeychainExample for fully working project example.

Both setGenericPassword and setInternetCredentials allow to store strings only!

Both getInternetCredentials and getGenericPassword will resolve to the stored value, or to false, in case there is no record stored. They will reject only if an unexpected error is encountered.

import * as Keychain from 'react-native-keychain';

const username = 'zuck';
const password = 'poniesRgr8';

// Generic Password, service argument optional
Keychain
  .setGenericPassword(username, password)
  .then(function() {
    console.log('Credentials saved successfully!');
  });

// service argument optional
Keychain
  .getGenericPassword()
  .then(function(credentials) {
    console.log('Credentials successfully loaded for user ' + credentials.username);
  }).catch(function(error) {
    console.log('Keychain couldn\'t be accessed!', error);
  });

// service argument optional
Keychain
  .resetGenericPassword()
  .then(function() {
    console.log('Credentials successfully deleted');
  });

// Internet Password, server argument required
const server = 'http://facebook.com';
Keychain
  .setInternetCredentials(server, username, password)
  .then(function() {
    console.log('Credentials saved successfully!');
  });

Keychain
  .getInternetCredentials(server)
  .then(function(credentials) {
    if (credentials) {
      console.log('Credentials successfully loaded for user ' + credentials.username);
    }
  });

Keychain
  .resetInternetCredentials(server)
  .then(function() {
    console.log('Credentials successfully deleted');
  });

Keychain
  .requestSharedWebCredentials()
  .then(function(credentials) {
    if (credentials) {
      console.log('Shared web credentials successfully loaded for user ' + credentials.username);
    } 
  })

Keychain
  .setSharedWebCredentials(server, username, password)
  .then(function() {
    console.log('Shared web credentials saved successfully!');
  })

Options

Key	Applies to	Description	Default
accessControl	setGenericPassword, setInternetCredentials	This dictates how a keychain item may be used, see possible values in Keychain.ACCESS_CONTROL.	None
accessible	setGenericPassword, setInternetCredentials	This dictates when a keychain item is accessible, see possible values in Keychain.ACCESSIBLE.	Keychain.ACCESSIBLE.WHEN_UNLOCKED
accessGroup	setGenericPassword, setInternetCredentials	In which App Group to share the keychain. Requires additional setup with entitlements.	None
authenticationPrompt	getGenericPassword, getInternetCredentials	What to prompt the user when unlocking the keychain with biometry or device password.	Authenticate to retrieve secret
authenticationType	canImplyAuthentication	Policies specifying which forms of authentication are acceptable.	Keychain.AUTHENTICATION_TYPE.DEVICE_PASSCODE_OR_BIOMETRICS
service	setGenericPassword, getGenericPassword	Reverse domain name qualifier for the service associated with password.	App bundle ID

Keychain.ACCESS_CONTROL enum

Key	Description
USER_PRESENCE	Constraint to access an item with either Touch ID or passcode.
BIOMETRY_ANY	Constraint to access an item with Touch ID for any enrolled fingers.
BIOMETRY_CURRENT_SET	Constraint to access an item with Touch ID for currently enrolled fingers.
DEVICE_PASSCODE	Constraint to access an item with a passcode.
APPLICATION_PASSWORD	Constraint to use an application-provided password for data encryption key generation.
BIOMETRY_ANY_OR_DEVICE_PASSCODE	Constraint to access an item with Touch ID for any enrolled fingers or passcode.
BIOMETRY_CURRENT_SET_OR_DEVICE_PASSCODE	Constraint to access an item with Touch ID for currently enrolled fingers or passcode.

Keychain.ACCESSIBLE enum

Key	Description
WHEN_UNLOCKED	The data in the keychain item can be accessed only while the device is unlocked by the user.
AFTER_FIRST_UNLOCK	The data in the keychain item cannot be accessed after a restart until the device has been unlocked once by the user.
ALWAYS	The data in the keychain item can always be accessed regardless of whether the device is locked.
WHEN_PASSCODE_SET_THIS_DEVICE_ONLY	The data in the keychain can only be accessed when the device is unlocked. Only available if a passcode is set on the device. Items with this attribute never migrate to a new device.
WHEN_UNLOCKED_THIS_DEVICE_ONLY	The data in the keychain item can be accessed only while the device is unlocked by the user. Items with this attribute do not migrate to a new device.
AFTER_FIRST_UNLOCK_THIS_DEVICE_ONLY	The data in the keychain item cannot be accessed after a restart until the device has been unlocked once by the user. Items with this attribute never migrate to a new device.
ALWAYS_THIS_DEVICE_ONLY	The data in the keychain item can always be accessed regardless of whether the device is locked. Items with this attribute never migrate to a new device.

Keychain.AUTHENTICATION_TYPE enum

Key	Description
DEVICE_PASSCODE_OR_BIOMETRICS	Device owner is going to be authenticated by biometry or device passcode.
BIOMETRICS	Device owner is going to be authenticated using a biometric method (Touch ID or Face ID).

Note on security

On API levels that do not support Android keystore, Facebook Conceal is used to en/decrypt stored data. The encrypted data is then stored in SharedPreferences. Since Conceal itself stores its encryption key in SharedPreferences, it follows that if the device is rooted (or if an attacker can somehow access the filesystem), the key can be obtained and the stored data can be decrypted. Therefore, on such a device, the conceal encryption is only an obscurity. On API level 23+ the key is stored in the Android Keystore, which makes the key non-exportable and therefore makes the entire process more secure. Follow best practices and do not store user credentials on a device. Instead use tokens or other forms of authentication and re-ask for user credentials before performing sensitive operations.

Manual Installation

iOS

Option: Manually

• Right click on Libraries, select Add files to "…" and select node_modules/react-native-keychain/RNKeychain.xcodeproj
• Select your project and under Build Phases -> Link Binary With Libraries, press the + and select libRNKeychain.a.

Option: With CocoaPods

Add the following to your Podfile and run pod update:

pod 'RNKeychain', :path => '../node_modules/react-native-keychain'

Android

Option: Manually

• Edit android/settings.gradle to look like this (without the +):

  rootProject.name = 'MyApp'
  
  include ':app'
  
  + include ':react-native-keychain'
  + project(':react-native-keychain').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-keychain/android')
  

• Edit android/app/build.gradle (note: app folder) to look like this:

  apply plugin: 'com.android.application'
  
  android {
    ...
  }
  
  dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.0.1'
    compile 'com.facebook.react:react-native:0.19.+'
  + compile project(':react-native-keychain')
  }
  

• Edit your MainApplication.java (deep in android/app/src/main/java/...) to look like this (note two places to edit):

  package com.myapp;
  
  + import com.oblador.keychain.KeychainPackage;
  
  ....
  
  public class MainActivity extends extends ReactActivity {
  
    @Override
    protected List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
                new MainReactPackage(),
  +             new KeychainPackage()
        );
    }
    ...
  }
  

Proguard Rules

On Android builds that use proguard (like release), you may see the following error:

RNKeychainManager: no keychain entry found for service:
JNI DETECTED ERROR IN APPLICATION: JNI FindClass called with pending exception java.lang.NoSuchFieldError: no "J" field "mCtxPtr" in class "Lcom/facebook/crypto/cipher/NativeGCMCipher;" or its superclasses

If so, add a proguard rule in proguard-rules.pro:

-keep class com.facebook.crypto.** {
   *;
}

Maintainers

Joel Arvidsson Author

Vojtech Novak Maintainer

Pelle Stenild Coltau Maintainer

License

MIT © Joel Arvidsson 2016-2018