Function getReservedOperations

src/modules/pwdCache.js:226–233

* Get number of decryptable session keys * @param {openpgp.key.Key} key - private key, expected unlocked * @param {openpgp.message.Message} message - message with encrypted session keys * @return {Number} return the number of decryptable session keys

({key, message})

 * @return {Number} return the number of decryptable session keys
 */
function getReservedOperations({key, message}) {
  if (!key) {
    return 1;
  }
  const pkESKeyPacketlist = message.packets.filterByTag(enums.packet.publicKeyEncryptedSessionKey);
  const keyIdsHex = key.getKeys().map(({keyPacket}) => keyPacket.getKeyID().toHex());
  return pkESKeyPacketlist.filter(keyPacket => keyIdsHex.includes(keyPacket.publicKeyID.toHex())).length;
}

/**
 * Unlocked key if required and update cache