🔒 Huawei Modem Encryption

A JavaScript library for RSA encryption used by Huawei modems. This library provides functionality to encrypt passwords and other sensitive data using RSA PKCS#1 with both padding types.

📦 Installation

npm install huawei-modem-encryption

🚀 Usage

import { doRSAEncrypt } from 'huawei-modem-encryption';

// Example usage with OAEP padding:
const encryptedString = doRSAEncrypt(
  "password",        // 🔑 String to encrypt
  publicKeyN,        // 🔐 RSA public key modulus (n)
  publicKeyE,        // 🔐 RSA public key exponent (e) 
  "1"                // 🔒 RSA padding type: "1" or 1 for OAEP
);

// Example usage with PKCS#1 v1.5 padding:
const encryptedString2 = doRSAEncrypt(
  "password",        // 🔑 String to encrypt
  publicKeyN,        // 🔐 RSA public key modulus (n)
  publicKeyE,        // 🔐 RSA public key exponent (e) 
  "0"                // 🔒 RSA padding type: "0", 0, or any other value for PKCS#1 v1.5
);

📝 Parameters

• encstring: The data to be encrypted (e.g., password) 🔑
• encpubkeyn: The RSA public key modulus (n) 🔐
• encpubkeye: The RSA public key exponent (e) 🔐
• rsaPaddingType: RSA padding type - "1" or 1 for OAEP padding, any other value (like "0", 0, etc.) for PKCS#1 v1.5 padding 🔒

Note: The public key (n and e) should be obtained from your Huawei modem's API or documentation.

✨ Features

• 🔐 RSA encryption with dual padding support:
  • PKCS#1 v1.5 padding (default) - Compatible with most Huawei modems
  • OAEP padding - Enhanced security with SHA-1 hashing
• 📜 Base64 encoding of input data before encryption
• 🎲 Built-in secure random number generation
• 🛡️ SHA-1 hashing for OAEP padding
• 📦 Chunked encryption - Handles large data by splitting into appropriate chunks based on padding type

📜 License

Licensed under BSD-3-Clause. See the full license text in LICENSE.

This package contains code derived from Tom Wu's RSA implementation. Copyright (c) 2005 Tom Wu.

👨‍💻 Authors

Original Author: Tom Wu
Republished by: Doni Setiawan

📧 [email protected]

This is a republished version of a Huawei modem encryption implementation.