Crypto

node:crypto provides synchronous SHA-1 and SHA-256 hashing through createHash, createHmac, and hash, including the digest operations used by Express ETags and cookie signatures. Other digest algorithms are unsupported.

Random helpers use the component engine’s WebCrypto implementation, backed by wasi:random. The webcrypto and subtle exports delegate to that implementation. Node-shaped cipher, signing, key-object, certificate, and key-derivation operations throw explicit unsupported errors; this is not full Node crypto compatibility.

import { createHash } from 'node:crypto';

const digest = createHash('sha256').update('hello').digest('hex');