crypto

Import:

import { createHash } from "node:crypto";

Example:

import { createHash } from "node:crypto";

export function main(): void {
  const hash = createHash("sha256").update("hello").digest("hex");
  console.log(hash);
}

Keys

Key creation and signing helpers use KeyObject for parsed key material:

import { createPrivateKey, createPublicKey, sign, verify } from "node:crypto";

export function verifyMessage(privatePem: string, message: byte[]): boolean {
  const privateKey = createPrivateKey(privatePem);
  const publicKey = createPublicKey(privateKey);
  const signature = sign("sha256", message, privateKey);
  return verify("sha256", message, publicKey, signature);
}

This keeps repeated signing and verification paths typed around key objects instead of untyped unknown values.

This is a package import, not ambient behavior. Keep the model explicit:

• @tsonic/js gives you the JS world
• @tsonic/nodejs gives you Node-style modules like node:crypto