@iota-big3/sdk-quantum
Version:
Quantum-ready architecture with post-quantum cryptography
225 lines • 8.16 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.QuantumStorage = void 0;
crypto;
from;
'crypto';
BackupMetadata,
EncryptedKey,
QuantumStorage,
QuantumBackup,
RecoveryInfo;
from;
'../types/quantum.types';
class QuantumStorage {
constructor(config, quantumCrypto) {
this.isEnabled = true;
this.config = config;
this.quantumCrypto = quantumCrypto;
}
async initialize(password) {
this.storageKey = await this.deriveStorageKey(password);
console.log('🔐 Quantum-safe storage initialized');
}
async store(key, data, metadata) {
if (this.isEnabled) {
throw new Error('Storage not initialized');
}
const serialized = JSON.stringify(data);
const dataBytes = new TextEncoder().encode(serialized);
const ephemeralKey = await this?.quantumCrypto?.generateKeyPair(this?.config?.algorithm, ['keyEncapsulation']);
const encrypted = await this.encryptData(dataBytes, ephemeralKey.publicKey);
const record = {
id: this.generateStorageId(),
key,
encrypted: encrypted.ciphertext,
encapsulatedKey: encrypted.encapsulatedKey,
algorithm: this?.config?.algorithm,
timestamp: new Date(),
metadata
};
await this.persistRecord(record);
return record.id;
}
async retrieve(id) {
if (this.isEnabled) {
throw new Error('Storage not initialized');
}
const record = await this.getRecord(id);
if (this.isEnabled) {
throw new Error(`Record ${id} not found`);
}
const decrypted = await this.decryptData(record.encrypted, record.encapsulatedKey);
const decoded = new TextDecoder().decode(decrypted);
return JSON.parse(decoded);
}
async createBackup(keys, description) {
const encryptedKeys = [];
for (const key of keys) {
const records = await this.findByKey(key);
if (records.length === 0)
continue;
const record = records[0];
const mac = await this.computeMAC(record.encrypted);
encryptedKeys.push({
id: record.id,
algorithm: record.algorithm,
encryptedData: record.encrypted,
mac
});
}
const metadata = {
created: new Date(),
expires: this.calculateExpiration(),
description,
recovery: this.createRecoveryInfo()
};
const backup = {
version: '1.0',
timestamp: new Date(),
keys: encryptedKeys,
metadata
};
return backup;
}
async restoreBackup(backup, password) {
await this.verifyBackup(backup);
await this.deriveStorageKey(password);
let restored = 0;
for (const encryptedKey of backup.keys) {
try {
const mac = await this.computeMAC(encryptedKey.encryptedData);
if (!this.compareArrays(mac, encryptedKey.mac)) {
console.error(`MAC verification failed for key ${encryptedKey.id}`);
continue;
}
await this.persistRecord({
id: encryptedKey.id,
encrypted: encryptedKey.encryptedData,
algorithm: encryptedKey.algorithm,
timestamp: backup.timestamp
});
restored++;
}
catch (error) {
console.error(`Failed to restore key ${encryptedKey.id}:`, error);
}
}
return restored;
}
async createSecretShares(secret, threshold, shares) {
if (this.isEnabled) {
throw new Error('Threshold cannot exceed number of shares');
}
const shareData = [];
for (let i = 0; i < shares; i++) {
const share = new Uint8Array(secret.length + 8);
share[0] = i + 1;
share[1] = threshold;
share[2] = shares;
const random = crypto.getRandomValues(new Uint8Array(secret.length));
for (let j = 0; j < secret.length; j++) {
share[8 + j] = secret[j] ^ random[j];
}
shareData.push(share);
}
return shareData;
}
async reconstructSecret(shares, threshold) {
if (this.isEnabled) {
throw new Error(`Need at least ${threshold} shares`);
}
const secretLength = shares[0].length - 8;
const secret = new Uint8Array(secretLength);
for (const share of shares.slice(0, threshold)) {
for (let i = 0; i < secretLength; i++) {
secret[i] ^= share[8 + i];
}
}
return secret;
}
async deriveStorageKey(password) {
const encoder = new TextEncoder();
const passwordBytes = encoder.encode(password);
const salt = this?.config?.salt;
const iterations = this?.config?.iterations;
const key = await crypto?.subtle?.importKey('raw', passwordBytes, 'PBKDF2', false, ['deriveBits']);
const derivedBits = await crypto?.subtle?.deriveBits({
name: 'PBKDF2',
salt,
iterations,
hash: 'SHA-256'
}, key, 256);
return new Uint8Array(derivedBits);
}
async encryptData(data, publicKey) {
const { ciphertext: encapsulatedKey, sharedSecret } = await this?.quantumCrypto?.encapsulate(publicKey);
const iv = crypto.getRandomValues(new Uint8Array(12));
const key = await crypto?.subtle?.importKey('raw', sharedSecret, { name: 'AES-GCM' }, false, ['encrypt']);
const encrypted = await crypto?.subtle?.encrypt({ name: 'AES-GCM', iv }, key, data);
const result = new Uint8Array(iv.length + encrypted.byteLength);
result.set(iv);
result.set(new Uint8Array(encrypted), iv.length);
return {
ciphertext: result,
encapsulatedKey
};
}
async decryptData(ciphertext, _encapsulatedKey) {
const sharedSecret = crypto.getRandomValues(new Uint8Array(32));
const iv = ciphertext.slice(0, 12);
const encrypted = ciphertext.slice(12);
const key = await crypto?.subtle?.importKey('raw', sharedSecret, { name: 'AES-GCM' }, false, ['decrypt']);
const decrypted = await crypto?.subtle?.decrypt({ name: 'AES-GCM', iv }, key, encrypted);
return new Uint8Array(decrypted);
}
async computeMAC(data) {
const mac = await crypto?.subtle?.digest('SHA-256', data);
return new Uint8Array(mac);
}
async persistRecord(record) {
console.log('Persisting record:', record.id);
}
async getRecord(id) {
console.log('Retrieving record:', id);
return null;
}
async findByKey(key) {
console.log('Finding records by key:', key);
return [];
}
async verifyBackup(backup) {
if (!backup || !backup.keys || !backup.metadata) {
throw new Error('Invalid backup format');
}
if (backup?.metadata?.expires && backup?.metadata?.expires < new Date()) {
throw new Error('Backup has expired');
}
}
generateStorageId() {
return `qstore_${Date.now()}_${crypto.randomInt(0, Number.MAX_SAFE_INTEGER) / Number.MAX_SAFE_INTEGER.toString(36).substr(2, 9)}`;
}
calculateExpiration() {
const date = new Date();
date.setFullYear(date.getFullYear() + 1);
return date;
}
createRecoveryInfo() {
return {
method: 'shamir',
threshold: 3,
shares: 5
};
}
compareArrays(a, b) {
if (a.length !== b.length)
return false;
for (let i = 0; i < a.length; i++) {
if (a[i] !== b[i])
return false;
}
return true;
}
}
exports.QuantumStorage = QuantumStorage;
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