Function toPublicCryptoKey

lib/internal/crypto/keys.js:834–843

* Derives a public CryptoKey from a private CryptoKey. The resulting key uses * the private key's algorithm, is extractable, and validates the requested * public usages through the shared asymmetric import path. * @param {CryptoKey} key * @param {string[]} keyUsages * @returns {CryptoKey}

(key, keyUsages)

 * @returns {CryptoKey}
 */
function toPublicCryptoKey(key, keyUsages) {
  const handle = new KeyObjectHandle();
  handle.init(kKeyTypePublic, getCryptoKeyHandle(key),
              null, null, null, null);
  return toCryptoKey(
    handle,
    getCryptoKeyAlgorithm(key),
    true,
    keyUsages);
}

function createPrivateKey(key) {
  const { format, type, data, passphrase, namedCurve } =