json‑seal

Lightweight, portable JSON data integrity - without the complexity.

import {
  generateKeyPair,
  signPayload,
  verifyBackup
} from "json-seal";

const { publicKey, privateKey } = await generateKeyPair();

const sealed = await signPayload({ message: "hello" }, privateKey, publicKey);
const result = await verifyBackup(sealed);

json‑seal creates a cryptographically signed, tamper‑evident envelope around any JSON‑serializable value. It implements the full RFC 8785 JSON Canonicalization Scheme and uses RSA‑PSS signatures to guarantee both integrity and authenticity.

GitHub · npm