IKEV2_XFORMENCR_NULL_AES_GMAC
{ "aes-128-gmac", IKEV2_XFORMENCR_NULL_AES_GMAC, 16, 16, 4, 1 },
{ "aes-192-gmac", IKEV2_XFORMENCR_NULL_AES_GMAC, 24, 24, 4, 1 },
{ "aes-256-gmac", IKEV2_XFORMENCR_NULL_AES_GMAC, 32, 32, 4, 1 },
{ SADB_X_EALG_AESGMAC, IKEV2_XFORMENCR_NULL_AES_GMAC },