React Native RSA Turbo

A high-performance RSA encryption/decryption library for React Native using TurboModules.

Features

• 🔐 RSA key generation (2048, 4096 bits)
• 🔒 Encrypt/Decrypt messages
• ✍️ Digital signature and verification
• 🏪 Android Keystore integration
• ⚡ TurboModule for better performance
• 📱 Cross-platform (Android/iOS)

Installation

From GitHub

npm install git+https://github.com/Leadstoyou/react-native-rsa-turbo.git

From npm (when published)

npm install react-native-rsa-turbo

Usage

import { RSA } from 'react-native-rsa-turbo';

// Generate RSA key pair
const keys = await RSA.generateKeys(2048);
console.log('Public key:', keys.publicKey);
console.log('Private key:', keys.privateKey);

// Encrypt/Decrypt
const message = 'Hello World';
const encrypted = await RSA.encrypt(message, keys.publicKey);
const decrypted = await RSA.decrypt(encrypted, keys.privateKey);

// Sign/Verify
const signature = await RSA.sign(message, keys.privateKey);
const isValid = await RSA.verify(signature, message, keys.publicKey);

// Android Keystore (Android only)
const keystoreKeys = await RSA.kcGenerateKeys('my-key-tag', 2048);
const keystoreEncrypted = await RSA.kcEncrypt(message, 'my-key-tag');

API Reference

Key Generation

• generateKeys(bits: number): Promise<KeyPair>
• generate(): Promise<KeyPair> (default 2048 bits)

Encryption/Decryption

• encrypt(message: string, publicKey: string): Promise<string>
• decrypt(encoded: string, privateKey: string): Promise<string>

Digital Signature

• sign(message: string, privateKey: string, algorithm?: Algorithm): Promise<string>
• verify(signature: string, message: string, publicKey: string, algorithm?: Algorithm): Promise<boolean>

Android Keystore

• kcGenerateKeys(keyTag: string, bits: number): Promise<KeyPair>
• kcEncrypt(message: string, keyTag: string): Promise<string>
• kcDecrypt(encoded: string, keyTag: string): Promise<string>
• kcSign(message: string, keyTag: string, algorithm?: Algorithm): Promise<string>
• kcVerify(signature: string, message: string, keyTag: string, algorithm?: Algorithm): Promise<boolean>
• kcDeletePrivateKey(keyTag: string): Promise<void>

Types

type KeyPair = {
  publicKey: string;
  privateKey?: string;
};

type Algorithm = 'SHA512withRSA' | 'SHA256withRSA';

Requirements

• React Native >= 0.60
• Android API 21+
• iOS 11+

License

MIT

Contributing

1. Fork the repository
2. Create your feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request