Function toCryptoKeySecret

lib/internal/crypto/keys.js:693–752

* Converts a secret KeyObjectHandle to a CryptoKey by dispatching to the * algorithm-specific Web Crypto import path. * @param {KeyObjectHandle} keyData * @param {object} algorithm * @param {boolean} extractable * @param {string[]} keyUsages * @returns {CryptoKey}

(
  keyData,
  algorithm,
  extractable,
  keyUsages,
)

 * @returns {CryptoKey}
 */
function toCryptoKeySecret(
  keyData,
  algorithm,
  extractable,
  keyUsages,
) {
  let result;
  switch (algorithm.name) {
    case 'HMAC':
      // Fall through
    case 'KMAC128':
      // Fall through
    case 'KMAC256':
      result = require('internal/crypto/mac')
        .macImportKey('KeyObjectHandle', keyData, algorithm, extractable, keyUsages);
      break;
    case 'AES-CTR':
      // Fall through
    case 'AES-CBC':
      // Fall through
    case 'AES-GCM':
      // Fall through
    case 'AES-KW':
      // Fall through
    case 'AES-OCB':
      result = require('internal/crypto/aes')
        .aesImportKey(algorithm, 'KeyObjectHandle', keyData, extractable, keyUsages);
      break;
    case 'ChaCha20-Poly1305':
      result = require('internal/crypto/chacha20_poly1305')
        .c20pImportKey(algorithm, 'KeyObjectHandle', keyData, extractable, keyUsages);
      break;
    case 'HKDF':
      // Fall through
    case 'PBKDF2':
      // Fall through
    case 'Argon2d':
      // Fall through
    case 'Argon2i':
      // Fall through
    case 'Argon2id':
      result = importGenericSecretKey(
        algorithm,
        'KeyObjectHandle',
        keyData,
        extractable,
        keyUsages);
      break;
    default:
      throw lazyDOMException('Unrecognized algorithm name', 'NotSupportedError');
  }

  if (getCryptoKeyUsagesMask(result) === 0) {
    throw lazyDOMException(
      `Usages cannot be empty when importing a ${getCryptoKeyType(result)} key.`,
      'SyntaxError');
  }