Crypto API

new DigestStream(algorithm: string)

// Generate random values
const array = new Uint8Array(16);
crypto.getRandomValues(array);

// Generate UUID
const uuid = crypto.randomUUID();

// Hash data
const data = new TextEncoder().encode('Hello, World!');
const hashBuffer = await crypto.subtle.digest('SHA-256', data);
const hashArray = Array.from(new Uint8Array(hashBuffer));
const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');

// Generate AES key
const key = await crypto.subtle.generateKey(
  { name: 'AES-GCM', length: 256 },
  true,
  ['encrypt', 'decrypt']
);

// Encrypt data
const iv = crypto.getRandomValues(new Uint8Array(12));
const encrypted = await crypto.subtle.encrypt(
  { name: 'AES-GCM', iv },
  key,
  data
);

// Decrypt data
const decrypted = await crypto.subtle.decrypt(
  { name: 'AES-GCM', iv },
  key,
  encrypted
);

// Generate RSA key pair
const keyPair = await crypto.subtle.generateKey(
  {
    name: 'RSA-PSS',
    modulusLength: 2048,
    publicExponent: new Uint8Array([1, 0, 1]),
    hash: 'SHA-256',
  },
  true,
  ['sign', 'verify']
);

// Sign data
const signature = await crypto.subtle.sign(
  { name: 'RSA-PSS', saltLength: 32 },
  keyPair.privateKey,
  data
);

// Verify signature
const valid = await crypto.subtle.verify(
  { name: 'RSA-PSS', saltLength: 32 },
  keyPair.publicKey,
  signature,
  data
);

// HMAC
const hmacKey = await crypto.subtle.generateKey(
  { name: 'HMAC', hash: 'SHA-256' },
  true,
  ['sign', 'verify']
);

const mac = await crypto.subtle.sign(
  'HMAC',
  hmacKey,
  data
);

// Streaming digest
const digestStream = new DigestStream('SHA-256');
const writer = digestStream.getWriter();
await writer.write(data);
await writer.close();
const digest = await digestStream.digest;