Function prepareSecretKey

lib/internal/crypto/keys.js:641–666

(key, encoding, bufferOnly = false)

}

function prepareSecretKey(key, encoding, bufferOnly = false) {
  if (!bufferOnly) {
    if (isKeyObject(key)) {
      const type = getKeyObjectType(key);
      if (type !== 'secret')
        throw new ERR_CRYPTO_INVALID_KEY_OBJECT_TYPE(type, 'secret');
      return getKeyObjectHandle(key);
    }
    if (isCryptoKey(key)) {
      emitDEP0203();
      const type = getCryptoKeyType(key);
      if (type !== 'secret')
        throw new ERR_CRYPTO_INVALID_KEY_OBJECT_TYPE(type, 'secret');
      return getCryptoKeyHandle(key);
    }
  }
  if (typeof key !== 'string' &&
      !isArrayBufferView(key) &&
      !isAnyArrayBuffer(key)) {
    throw new ERR_INVALID_ARG_TYPE(
      'key',
      getKeyTypes(!bufferOnly, bufferOnly),
      key);
  }
  return getArrayBufferOrView(key, 'key', encoding);
}

function createSecretKey(key, encoding) {
  key = prepareSecretKey(key, encoding, true);