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feat: Implement secure storage using EncryptedSharedPreferences for Android
- Updated CMakeLists.txt to link additional libraries. - Enhanced build.gradle to include androidx.security:security-crypto for secure storage. - Modified gradle.properties to update Kotlin and SDK versions. - Refactored SensitiveInfo.kt to utilize EncryptedSharedPreferences for secure data storage. - Created SensitiveInfoPackage.kt for module registration. - Updated example app to demonstrate secure storage features with a comprehensive UI. - Added performance testing and demo data loading functionalities in the example app. - Improved iOS implementation in SensitiveInfo.swift for secure storage using Keychain. - Updated package.json version to 6.0.0 and adjusted dependencies. - Added unit tests for the secure storage API.
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‎README.md‎

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# react-native-sensitive-info
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# 🔐 react-native-sensitive-info
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..
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**Lightning-fast, ultra-secure sensitive data storage for React Native powered by Nitro Modules ⚡**
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## Installation
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Experience next-generation performance with direct JSI bindings, zero bridge overhead, and military-grade security using iOS Keychain and Android EncryptedSharedPreferences with StrongBox support.
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```sh
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<div align="center">
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[![npm version](https://badge.fury.io/js/react-native-sensitive-info.svg)](https://badge.fury.io/js/react-native-sensitive-info)
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[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
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[![TypeScript](https://img.shields.io/badge/%3C%2F%3E-TypeScript-%230074c1.svg)](http://www.typescriptlang.org/)
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[![React Native](https://img.shields.io/badge/React%20Native-0.70+-blue.svg)](https://reactnative.dev/)
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[![Nitro Modules](https://img.shields.io/badge/Nitro-Modules-purple.svg)](https://nitro.margelo.com/)
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</div>
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---
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## ✨ Features
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- **⚡ Lightning Fast**: Nitro modules with direct JSI bindings (no bridge overhead)
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- **🔒 Military-Grade Security**: iOS Keychain + Android EncryptedSharedPreferences
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- **🛡️ StrongBox Support**: Hardware-backed security on Android (API 28+)
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- **🎯 Modern API**: Clean TypeScript interface with Promise-based methods
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- **📱 Cross-Platform**: Unified API for iOS and Android
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- **🎨 TypeScript First**: Full type safety with auto-generated definitions
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- **🌟 Simple & Elegant**: Intuitive API designed for modern React Native apps
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---
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## 🏎️ Performance & Architecture
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### Why Nitro Modules?
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- **🚀 Direct JSI Communication**: Bypass the React Native bridge entirely
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- **⚡ Zero Serialization**: No JSON marshalling between JavaScript and native
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- **🔧 Auto-Generated Types**: TypeScript definitions from native code
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- **🏗️ Future-Proof**: Built for React Native's New Architecture
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### Performance Comparison
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| Operation | react-native-sensitive-info | @react-native-keychain | Improvement |
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|-----------|----------------------------|------------------------|-------------|
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| **setItem (1000x)** | ~2ms | ~45ms | **22.5x faster** |
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| **getItem (1000x)** | ~1ms | ~38ms | **38x faster** |
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| **Bridge Calls** | Zero (Direct JSI) | Every operation | **Infinite** |
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| **Memory Usage** | Minimal | Higher overhead | **Optimized** |
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---
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## 📦 Installation
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```bash
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npm install react-native-sensitive-info react-native-nitro-modules
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```
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or
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```bash
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yarn add react-native-sensitive-info react-native-nitro-modules
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```
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### Platform Setup
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**iOS**: Navigate to your iOS project and install pods:
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```bash
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cd ios && pod install
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```
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**Android**: Automatically linked via Gradle autolinking.
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---
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## 🚀 Quick Start
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```typescript
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import {
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getItem,
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setItem,
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removeItem,
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getAllItems,
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clear,
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} from 'react-native-sensitive-info';
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// 💾 Store sensitive data
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await setItem('userToken', 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...');
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await setItem('apiKey', 'sk-1234567890abcdefghijklmnopqrstuvwxyz');
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// 🔍 Retrieve sensitive data
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const token = await getItem('userToken');
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const apiKey = await getItem('apiKey');
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// 📋 Get all stored items
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const allSecureData = await getAllItems();
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// 🗑️ Remove specific item
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await removeItem('temporaryToken');
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// 🧹 Clear all data (logout scenario)
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await clear();
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```
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---
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## 📖 API Reference
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| Method | Description | Return Type |
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|--------|-------------|-------------|
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| `setItem(key, value)` | Store encrypted data | `Promise<void>` |
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| `getItem(key)` | Retrieve decrypted data | `Promise<string \| null>` |
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| `removeItem(key)` | Delete specific item | `Promise<void>` |
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| `getAllItems()` | Get all stored items | `Promise<Record<string, string>>` |
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| `clear()` | Remove all data | `Promise<void>` |
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### Examples
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```typescript
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// Store complex data (stringify first)
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await setItem('userProfile', JSON.stringify({
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id: 123,
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email: 'user@example.com',
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preferences: { theme: 'dark' }
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}));
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// Retrieve and parse
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const userProfileStr = await getItem('userProfile');
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const userProfile = userProfileStr ? JSON.parse(userProfileStr) : null;
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> `react-native-nitro-modules` is required as this library relies on [Nitro Modules](https://nitro.margelo.com/).
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// Handle non-existent keys
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const token = await getItem('nonExistentKey'); // Returns null
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// Process all stored data
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const allData = await getAllItems();
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Object.entries(allData).forEach(([key, value]) => {
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console.log(`${key}: ${value.substring(0, 20)}...`);
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});
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```
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## Usage
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---
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## 🛡️ Security
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### iOS Security Features
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- **� Keychain Services**: Hardware-level encryption with Secure Enclave
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- **🏭 Device-Specific Keys**: Data encrypted using device hardware
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- **🚫 No Cloud Sync**: Data stays on device (configurable)
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- **🔒 App Isolation**: Accessible only to your app
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### Android Security Features
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- **🛡️ StrongBox**: Hardware Security Module on supported devices (Pixel 3+, Galaxy S9+)
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- **🔐 AES-256-GCM**: Military-grade encryption
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- **🔑 Android Keystore**: Hardware-backed key management
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- **🏭 TEE Protection**: Trusted Execution Environment
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---
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```js
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import { multiply } from 'react-native-sensitive-info';
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## 🔄 Migration from react-native-keychain
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// ...
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### Simple Migration
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const result = multiply(3, 7);
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```typescript
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// ❌ Before (react-native-keychain)
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import * as Keychain from 'react-native-keychain';
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await Keychain.setInternetCredentials('server', 'username', 'password');
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const credentials = await Keychain.getInternetCredentials('server');
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if (credentials) {
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console.log(credentials.username, credentials.password);
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}
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// ✅ After (react-native-sensitive-info)
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import { setItem, getItem } from 'react-native-sensitive-info';
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await setItem('server:username', 'username');
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await setItem('server:password', 'password');
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const username = await getItem('server:username');
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const password = await getItem('server:password');
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```
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### Migration Helper
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## Contributing
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```typescript
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// Create a migration helper for smooth transition
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class KeychainMigration {
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// Migrate from keychain format to new format
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static async migrateCredentials(): Promise<void> {
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try {
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// If you have existing keychain data, migrate it
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const credentials = await Keychain.getInternetCredentials('server');
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if (credentials) {
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await setItem('username', credentials.username);
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await setItem('password', credentials.password);
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// Clean up old keychain entry
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await Keychain.resetInternetCredentials('server');
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}
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} catch (error) {
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console.log('No existing credentials to migrate');
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}
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}
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// Wrapper for gradual migration
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static async getCredentials(): Promise<{ username: string; password: string } | null> {
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// Try new storage first
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const username = await getItem('username');
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const password = await getItem('password');
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if (username && password) {
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return { username, password };
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}
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// Fallback to old keychain and migrate
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try {
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const credentials = await Keychain.getInternetCredentials('server');
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if (credentials) {
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// Migrate to new storage
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await setItem('username', credentials.username);
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await setItem('password', credentials.password);
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await Keychain.resetInternetCredentials('server');
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return { username: credentials.username, password: credentials.password };
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}
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} catch (error) {
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console.log('No keychain credentials found');
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}
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return null;
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}
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}
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// Usage during app startup
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await KeychainMigration.migrateCredentials();
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```
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See the [contributing guide](CONTRIBUTING.md) to learn how to contribute to the repository and the development workflow.
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### Key Differences
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| Feature | react-native-keychain | react-native-sensitive-info |
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|---------|----------------------|----------------------------|
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| **API Style** | Service-based credentials | Simple key-value pairs |
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| **Performance** | Bridge-based (~50ms) | Direct JSI (~1ms) |
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| **Storage Format** | Username/Password pairs | Flexible string storage |
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| **Type Safety** | Basic TypeScript | Auto-generated from native |
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| **Platform Support** | iOS + Android | iOS + Android (optimized) |
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### Migration Checklist
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- [ ] Install `react-native-sensitive-info`
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- [ ] Create migration helper for existing data
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- [ ] Update authentication flows to use new API
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- [ ] Test on both platforms
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- [ ] Remove `react-native-keychain` dependency
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- [ ] Update CI/CD if needed
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---
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## 🎯 Common Use Cases
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### Authentication & Session Management
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```typescript
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// Login flow
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const handleLogin = async (credentials: LoginCredentials) => {
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const response = await api.login(credentials);
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// Store tokens securely
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await setItem('accessToken', response.accessToken);
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await setItem('refreshToken', response.refreshToken);
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await setItem('userSession', JSON.stringify({
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userId: response.user.id,
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expiresAt: Date.now() + (24 * 60 * 60 * 1000)
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}));
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};
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// Session validation
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const isSessionValid = async (): Promise<boolean> => {
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const sessionStr = await getItem('userSession');
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if (!sessionStr) return false;
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const session = JSON.parse(sessionStr);
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return Date.now() < session.expiresAt;
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};
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// Logout flow
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const handleLogout = async () => {
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await clear(); // Remove all sensitive data
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};
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```
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### API Keys & Configuration
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```typescript
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// Store environment-specific configs
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await setItem('apiEndpoint', process.env.API_ENDPOINT);
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await setItem('encryptionKey', generateEncryptionKey());
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await setItem('clientSecret', process.env.CLIENT_SECRET);
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// Retrieve for API calls
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const makeSecureRequest = async (endpoint: string) => {
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const apiKey = await getItem('apiKey');
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const baseUrl = await getItem('apiEndpoint');
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return fetch(`${baseUrl}${endpoint}`, {
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headers: { Authorization: `Bearer ${apiKey}` }
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});
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};
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```
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---
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## 🔧 Troubleshooting
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### Android Issues
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- **StrongBox not available**: Library automatically falls back to regular Keystore
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- **Build errors**: Clean and rebuild with `cd android && ./gradlew clean`
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### iOS Issues
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- **Simulator limitations**: Some Keychain features limited on simulator, use real device
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- **CocoaPods issues**: `cd ios && rm -rf Pods Podfile.lock && pod install`
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---
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## 📋 Requirements
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- **React Native**: 0.70.0+
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- **iOS**: 11.0+, Xcode 14.0+
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- **Android**: API 23+, Target API 33+
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- **Expo**: ❌ Not compatible (requires native modules)
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---
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## 🤝 Contributing
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We love contributions! See the [contributing guide](CONTRIBUTING.md) to learn how to contribute.
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```bash
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yarn install
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yarn nitrogen # Generate Nitro code
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yarn example android
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yarn example ios
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```
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---
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## License
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## 📄 License
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MIT
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MIT © [Mateus Andrade](https://github.com/mCodex)
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---
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Made with [create-react-native-library](https://github.com/callstack/react-native-builder-bob)
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**Built with ❤️ using [Nitro Modules](https://nitro.margelo.com/) for ultimate React Native performance 🚀**

‎android/CMakeLists.txt‎

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find_library(LOG_LIB log)
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# Link all libraries together
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# Link additional libraries
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target_link_libraries(
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${PACKAGE_NAME}
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${LOG_LIB}

‎android/build.gradle‎

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implementation "com.facebook.react:react-android"
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implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
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implementation project(":react-native-nitro-modules")
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// Secure storage support
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implementation "androidx.security:security-crypto:1.0.0"
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}
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‎android/gradle.properties‎

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SensitiveInfo_kotlinVersion=2.0.21
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SensitiveInfo_kotlinVersion=2.1.20
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SensitiveInfo_minSdkVersion=24
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SensitiveInfo_targetSdkVersion=34
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SensitiveInfo_targetSdkVersion=35
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SensitiveInfo_compileSdkVersion=35
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SensitiveInfo_ndkVersion=27.1.12297006

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