SecureJS

SecureJS is a modern JavaScript cryptography library designed to enhance web application security. It provides a user-friendly interface for complex cryptographic operations using advanced encryption algorithms.

Demo Link

SecureJS Demo

Features

• AES-GCM Encryption: Secure symmetric encryption for data confidentiality and integrity.
• ECDSA Digital Signatures: Robust asymmetric encryption for authentication and non-repudiation.
• Argon2 Password Hashing: State-of-the-art password hashing (server-side only).
• Cross-Environment Compatibility: Works in both browser and Node.js environments.

Installation

npm install @todak2000/securejs

Usage

Import Library

import { SecureJS } from "@todak2000/securejs";

Symmetric Encryption (AES-GCM)

const key = await SecureJS.generateEncryptionKey();
const encryptedMessage = await SecureJS.encrypt("Sensitive data", key);
const decryptedMessage = await SecureJS.decrypt(encryptedMessage, key);
console.log(decryptedMessage);  // Output: "Sensitive data"

Asymmetric Encryption (ECDSA)

const keyPair = await SecureJS.generateKeyPair();
const messageBuffer = new TextEncoder().encode("Verify me!");
const signature = await SecureJS.sign(messageBuffer, keyPair.privateKey);
const isValid = await SecureJS.verify(signature, messageBuffer, keyPair.publicKey);
console.log(isValid);  // Output: true

Password Hashing (Argon2, server-side only)

const hashedPassword = await SecureJS.hash("mySecretPassword");
const isMatch = await SecureJS.verify("mySecretPassword", hashedPassword);
console.log(isMatch);  // Output: true

API Reference

Symmetric Encryption

• generateEncryptionKey(): Generates a secure encryption key.
• encrypt(data, key): Encrypts data using AES-GCM.
• decrypt(encryptedData, key): Decrypts AES-GCM encrypted data.

Asymmetric Encryption

• generateKeyPair(): Generates a public-private key pair for ECDSA.
• sign(data, privateKey): Signs data with a private key.
• verify(signature, data, publicKey): Verifies a signature with a public key.

Hashing (Server-side only)

• hash(data): Hashes data using Argon2.
• verify(plaintext, hashedData): Verifies hashed data against plaintext.

Security Considerations

• Always use HTTPS when transmitting encrypted data or keys.
• Never store encryption keys or private keys in client-side storage.
• Argon2 hashing is only available server-side due to browser limitations.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Acknowledgement

• Dr. Nasir Baba-Ahmed, CHFI, CEH, ACE, MTCNA
• Mr. Victor Idonor
• Baze University
• World Bank

Author

• Daniel Olagunju

License

This project is licensed under the MIT License.