Function parseJwk

lib/internal/crypto/webcrypto.js:802–826

(data)

// Parse wrapped JWK bytes according to WebCrypto's "parse a JWK" procedure.
function parseJwk(data) {
  let key;
  try {
    // WebCrypto parses JWKs in a fresh global. Detach parsed JSON values
    // from user-mutated prototypes before WebIDL dictionary conversion.
    // Wrapped JWKs may be produced outside WebCrypto, so parse using the
    // spec-required UTF-8.
    const json = decodeUTF8(data, false, true);
    const result = JSONParse(json);
    detachFromUserPrototypes(result);
    key = webidl.converters.JsonWebKey(result);
  } catch (err) {
    throw lazyDOMException(
      'Invalid wrapped JWK key',
      { name: 'DataError', cause: err });
  }

  if (key.kty === undefined) {
    throw lazyDOMException(
      'Invalid wrapped JWK key',
      'DataError');
  }

  return key;
}

function aliasKeyFormat(format, alias) {
  return format === alias ? 'raw' : format;