flutter_secure_storage

This is the platform-specific implementation of flutter_secure_storage for Android and iOS.

Features

• Secure storage using Keychain (iOS) and Encrypted Shared Preferences with Tink (Android).
• Platform-specific options for encryption and accessibility.

Installation

Add the dependency in your pubspec.yaml and run flutter pub get.

Configuration

Android

1. Disable Google Drive backups to avoid key-related exceptions:

   • Add the required settings in your AndroidManifest.xml.

2. Exclude shared preferences used by the plugin:

   • Follow the linked documentation for further details.

iOS

You also need to add Keychain Sharing as capability to your iOS runner. To achieve this, please add the following in both your ios/Runner/DebugProfile.entitlements and ios/Runner/Release.entitlements.

<key>keychain-access-groups</key>
<array/>

If you have set your application up to use App Groups then you will need to add the name of the App Group to the keychain-access-groups argument above. Failure to do so will result in values appearing to be written successfully but never actually being written at all. For example if your app has an App Group named "aoeu" then your value for above would instead read:

<key>keychain-access-groups</key>
<array>
	<string>$(AppIdentifierPrefix)aoeu</string>
</array>

If you are configuring this value through XCode then the string you set in the Keychain Sharing section would simply read "aoeu" with XCode appending the $(AppIdentifierPrefix) when it saves the configuration.

Usage

Refer to the main flutter_secure_storage README for common usage instructions.

License

This project is licensed under the BSD 3 License. See the LICENSE file for details.