KEY_SPEC_THREAD_KEYRING -1
KEY_SPEC_PROCESS_KEYRING -2
KEY_SPEC_SESSION_KEYRING -3
KEY_SPEC_USER_KEYRING -4
KEY_SPEC_USER_SESSION_KEYRING -5
KEY_SPEC_GROUP_KEYRING -6
KEY_SPEC_REQKEY_AUTH_KEY -7
KEY_SPEC_REQUESTOR_KEYRING -8