Privacy Utils Core Crypto

Core cryptographic primitives for privacy-preserving applications.

Features

• Secure Random Generation: High-quality random number generation
• Hashing Functions: SHA-256, SHA-384, SHA-512 implementations
• Message Authentication: HMAC with various hash functions
• Authenticated Encryption: AEAD with AES-GCM
• Key Derivation: PBKDF2 and HKDF implementations
• Digital Signatures: ECDSA with secp256k1 and secp384r1 curves

Installation

npm install privacy-utils-core-crypto

Usage

import { randomBytes, sha256, hmac, aesGcmEncrypt, aesGcmDecrypt, deriveKey } from 'privacy-utils-core-crypto';

// Generate random bytes
const random = randomBytes(32);

// Hash data
const hash = sha256(new Uint8Array([1, 2, 3, 4, 5]));

// Create HMAC
const key = randomBytes(32);
const mac = hmac(key, new Uint8Array([1, 2, 3, 4, 5]), 'sha256');

// Encrypt data
const plaintext = new Uint8Array([1, 2, 3, 4, 5]);
const nonce = randomBytes(12);
const encrypted = await aesGcmEncrypt(key, nonce, plaintext);

// Decrypt data
const decrypted = await aesGcmDecrypt(key, nonce, encrypted.ciphertext, encrypted.tag);

// Derive keys
const derivedKey = await deriveKey('pbkdf2', password, salt, { iterations: 100000 });

API Reference

For complete API documentation, see the TypeScript definitions or visit the main repository.

License

MIT

Contributing

Contributions are welcome! Please see the main repository for contribution guidelines.