Post-Quantum Cryptography Tutorial

Tutorial: Post-Quantum Signature implementation

Why Quantum-Resistant Cryptography?

Traditional RSA or ECC cryptographic signatures can be broken by quantum computers. Post-quantum cryptography uses lattice-based or hash-based signatures that remain secure even if large-scale quantum computing becomes practical.

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Step 1: Initialize Signature Engine

import { SignatureEngine } from '@quantum-sig/crypto';

const engine = new SignatureEngine('lattice');
engine.configure({
    securityLevel: 'high',
    algorithm: 'CRYSTALS-Dilithium'
});

Step2: Sign & Verify Message

const message = 'Quantum-secure communication';
const signature = engine.sign(message);
const verified = engine.verify(message, signature);

Step3: Monitor Signing Process

engine.onProgress((event) => {
    console.log('Security status:', event.detail.status);
    if (event.type === 'quantum_attack_detected') {
        alert('Potential quantum attack intercepted!');
    }
});

Step4: Key Management

const keyPair = engine.generateKeyPair({
    keySize: 'quantum-safe-l1'
});

const privateKey = keyPair.serialize();
const publicKey = keyPair.derivePublic();

Step5: System Audit

const auditResult = engine.systemCheck();

console.log(auditResult);
// {
//   integrity: 'verified',
//   quantum_resistance: true,
//   last_key_rotation: '2025-09-08T08:28:00Z'
// };

Summary

Secure against quantum decryption attempts
Lattice-based algorithm for post-quantum security
NIST-certified quantum-secure signature standard

Quantum.SIG docs

Quantum-Resistant Cryptography