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/*
* Copyright (C) 2005-2007 Michael Richardson <[email protected]>
* Copyright (C) 2008-2009 Paul Wouters <[email protected]>
* Copyright (C) 2009 Avesh Agarwal <[email protected]>
* Copyright (C) 2012-2014 Paul Wouters <[email protected]>
* Copyright (C) 2013 Florian Weimer <[email protected]>
* Copyright (C) 2013 D. Hugh Redelmeier <[email protected]>
* Copyright (C) 2014-2018 Andrew Cagney <[email protected]>
* Copyright (C) 2019 Paul Wouters <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <features.h>
#include <blapit.h> /* for AES_BLOCK_SIZE */
#include "constants.h" /* for BYTES_FOR_BITS() */
#include "ietf_constants.h"
#include "ike_alg.h"
#include "ike_alg_prf_mac_ops.h"
#include "ike_alg_prf_ikev1_ops.h"
#include "ike_alg_prf_ikev2_ops.h"
#include "ike_alg_encrypt.h"
#include "ike_alg_encrypt_ops.h"
#include "ike_alg_integ.h"
#include "ike_alg_prf.h"
#include "lsw-pfkeyv2.h" /* for SADB_*ALG_* */
const struct encrypt_desc ike_alg_encrypt_aes_cbc = {
.common = {
.fqn = "AES_CBC",
.names = "aes,aes_cbc",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = OAKLEY_AES_CBC,
[IKEv1_ESP_ID] = ESP_AES,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_CBC,
#if defined SADB_X_EALG_AES
[SADB_ALG_ID] = SADB_X_EALG_AES, /* Orig, NetBSD, FreeBSD */
#elif defined SADB_X_EALG_AESCBC
[SADB_ALG_ID] = SADB_X_EALG_AESCBC, /* also FreeBSD; ulgh */
#endif
},
.fips.approved = true,
},
.nss = {
.mechanism = CKM_AES_CBC,
},
.enc_blocksize = AES_CBC_BLOCK_SIZE,
.pad_to_blocksize = true,
.wire_iv_size = AES_CBC_BLOCK_SIZE,
.keydeflen = AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.encrypt_ops = &ike_alg_encrypt_nss_cbc_ops,
.encrypt_netlink_xfrm_name = "aes",
.encrypt_tcpdump_name = "aes",
.encrypt_ike_audit_name = "aes",
.encrypt_kernel_audit_name = "AES",
};
const struct encrypt_desc ike_alg_encrypt_aes_ctr =
{
.common = {
.fqn = "AES_CTR",
.names = "aesctr,aes_ctr",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = OAKLEY_AES_CTR,
[IKEv1_ESP_ID] = ESP_AES_CTR,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_CTR,
#ifdef SADB_X_EALG_AESCTR
[SADB_ALG_ID] = SADB_X_EALG_AESCTR,
#endif
},
.fips.approved = true,
},
.nss = {
.mechanism = CKM_AES_CTR,
},
.enc_blocksize = AES_BLOCK_SIZE,
.pad_to_blocksize = false,
.wire_iv_size = 8,
.salt_size = 4,
.keydeflen = AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.encrypt_ops = &ike_alg_encrypt_nss_ctr_ops,
.encrypt_netlink_xfrm_name = "rfc3686(ctr(aes))",
.encrypt_tcpdump_name = "aes_ctr",
.encrypt_ike_audit_name = "aes_ctr",
.encrypt_kernel_audit_name = "AES_CTR",
};
const struct encrypt_desc ike_alg_encrypt_aes_gcm_8 =
{
.common = {
.fqn = "AES_GCM_8",
.names = "aes_gcm_8,aes_gcm_a",
/* XXX: aes_gcm_16 has aes_gcm as alias */
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_GCM_8,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_GCM_8,
#ifdef SADB_X_EALG_AES_GCM_ICV8
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM_ICV8,
#endif
#ifdef SADB_X_EALG_AES_GCM8
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM8,
#endif
#ifdef SADB_X_EALG_AESGCM8
[SADB_ALG_ID] = SADB_X_EALG_AESGCM8, /* NetBSD */
#endif
},
.fips.approved = true,
.fips.operation_limit = UINTMAX_C(1) << 32,
},
.nss = {
.mechanism = CKM_AES_GCM,
},
.enc_blocksize = AES_BLOCK_SIZE,
.pad_to_blocksize = false,
.wire_iv_size = 8,
.salt_size = AES_GCM_SALT_BYTES,
.keydeflen = AES_GCM_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 8,
.encrypt_ops = &ike_alg_encrypt_nss_gcm_ops,
.encrypt_netlink_xfrm_name = "rfc4106(gcm(aes))",
.encrypt_tcpdump_name = "aes_gcm",
.encrypt_ike_audit_name = "aes_gcm",
.encrypt_kernel_audit_name = "AES_GCM_A",
};
const struct encrypt_desc ike_alg_encrypt_aes_gcm_12 =
{
.common = {
.fqn = "AES_GCM_12",
.names = "aes_gcm_12,aes_gcm_b",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_GCM_12,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_GCM_12,
#ifdef SADB_X_EALG_AES_GCM_ICV12
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM_ICV12,
#endif
#ifdef SADB_X_EALG_AES_GCM12
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM12,
#endif
#ifdef SADB_X_EALG_AESGCM12
[SADB_ALG_ID] = SADB_X_EALG_AESGCM12, /* NetBSD */
#endif
},
.fips.approved = true,
.fips.operation_limit = UINTMAX_C(1) << 32,
},
.nss = {
.mechanism = CKM_AES_GCM,
},
.enc_blocksize = AES_BLOCK_SIZE,
.wire_iv_size = 8,
.pad_to_blocksize = false,
.salt_size = AES_GCM_SALT_BYTES,
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 12,
.encrypt_ops = &ike_alg_encrypt_nss_gcm_ops,
.encrypt_netlink_xfrm_name = "rfc4106(gcm(aes))",
.encrypt_tcpdump_name = "aes_gcm_12",
.encrypt_ike_audit_name = "aes_gcm_12",
.encrypt_kernel_audit_name = "AES_GCM_B",
};
const struct encrypt_desc ike_alg_encrypt_aes_gcm_16 =
{
.common = {
.fqn = "AES_GCM_16",
/* aes_gcm_8 has aes_gcm as officname */
.names = "aes_gcm,aes_gcm_16,aes_gcm_c",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_GCM_16,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_GCM_16,
#ifdef SADB_X_EALG_AES_GCM_ICV16
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM_ICV16,
#endif
#ifdef SADB_X_EALG_AES_GCM16
[SADB_ALG_ID] = SADB_X_EALG_AES_GCM16,
#endif
#ifdef SADB_X_EALG_AESGCM16
[SADB_ALG_ID] = SADB_X_EALG_AESGCM16, /* NetBSD */
#endif
},
.fips.approved = true,
.fips.operation_limit = UINTMAX_C(1) << 32,
},
.nss = {
.mechanism = CKM_AES_GCM,
},
.enc_blocksize = AES_BLOCK_SIZE,
.wire_iv_size = 8,
.pad_to_blocksize = false,
.salt_size = AES_GCM_SALT_BYTES,
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 16,
.encrypt_ops = &ike_alg_encrypt_nss_gcm_ops,
.encrypt_netlink_xfrm_name = "rfc4106(gcm(aes))",
.encrypt_tcpdump_name = "aes_gcm_16",
.encrypt_ike_audit_name = "aes_gcm_16",
.encrypt_kernel_audit_name = "AES_GCM_C",
};
/*
* References for AES_CCM.
*
* https://en.wikipedia.org/wiki/CCM_mode
* https://tools.ietf.org/html/rfc4309#section-7.1
*/
const struct encrypt_desc ike_alg_encrypt_aes_ccm_8 =
{
.common = {
.fqn = "AES_CCM_8",
.names = "aes_ccm_8,aes_ccm_a",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_CCM_8,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_CCM_8,
#ifdef SADB_X_EALG_AES_CCM_ICV8
[SADB_ALG_ID] = SADB_X_EALG_AES_CCM_ICV8,
#endif
},
.fips.approved = true,
},
.enc_blocksize = AES_BLOCK_SIZE,
.salt_size = 3,
.wire_iv_size = 8,
.pad_to_blocksize = false,
/* Only 128, 192 and 256 are supported (24 bits KEYMAT for salt not included) */
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 8,
.encrypt_netlink_xfrm_name = "rfc4309(ccm(aes))",
.encrypt_tcpdump_name = "aes_ccm_8",
.encrypt_ike_audit_name = "aes_ccm_8",
.encrypt_kernel_audit_name = "AES_CCM_A",
};
const struct encrypt_desc ike_alg_encrypt_aes_ccm_12 =
{
.common = {
.fqn = "AES_CCM_12",
.names = "aes_ccm_12,aes_ccm_b",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_CCM_12,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_CCM_12,
#ifdef SADB_X_EALG_AES_CCM_ICV12
[SADB_ALG_ID] = SADB_X_EALG_AES_CCM_ICV12,
#endif
},
.fips.approved = true,
},
.enc_blocksize = AES_BLOCK_SIZE,
.salt_size = 3,
.wire_iv_size = 8,
.pad_to_blocksize = false,
/* Only 128, 192 and 256 are supported (24 bits KEYMAT for salt not included) */
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 12,
.encrypt_netlink_xfrm_name = "rfc4309(ccm(aes))",
.encrypt_tcpdump_name = "aes_ccm_12",
.encrypt_ike_audit_name = "aes_ccm_12",
.encrypt_kernel_audit_name = "AES_CCM_B",
};
const struct encrypt_desc ike_alg_encrypt_aes_ccm_16 =
{
.common = {
.fqn = "AES_CCM_16",
.names = "aes_ccm,aes_ccm_16,aes_ccm_c",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_AES_CCM_16,
[IKEv2_ALG_ID] = IKEv2_ENCR_AES_CCM_16,
#ifdef SADB_X_EALG_AES_CCM_ICV16
[SADB_ALG_ID] = SADB_X_EALG_AES_CCM_ICV16,
#endif
},
.fips.approved = true,
},
.enc_blocksize = AES_BLOCK_SIZE,
.salt_size = 3,
.wire_iv_size = 8,
.pad_to_blocksize = false,
/* Only 128, 192 and 256 are supported (24 bits KEYMAT for salt not included) */
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 16,
.encrypt_netlink_xfrm_name = "rfc4309(ccm(aes))",
.encrypt_tcpdump_name = "aes_ccm_16",
.encrypt_ike_audit_name = "aes_ccm_16",
.encrypt_kernel_audit_name = "AES_CCM_C",
};
#ifdef USE_PRF_AES_XCBC
const struct prf_desc ike_alg_prf_aes_xcbc = {
.common = {
.fqn = "AES_XCBC",
.names = "aes128_xcbc,aes_xcbc",
.algo_type = IKE_ALG_PRF,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = -1,
[IKEv2_ALG_ID] = IKEv2_PRF_AES128_XCBC,
},
.fips.approved = false,
},
.nss = {
.mechanism = CKM_AES_ECB,
},
.prf_key_size = BYTES_FOR_BITS(128),
.prf_output_size = BYTES_FOR_BITS(128),
.prf_mac_ops = &ike_alg_prf_mac_nss_xcbc_ops,
.prf_ikev1_ops = &ike_alg_prf_ikev1_mac_ops,
.prf_ikev2_ops = &ike_alg_prf_ikev2_mac_ops,
.prf_ike_audit_name = "aes_xcbc",
};
#endif
const struct integ_desc ike_alg_integ_aes_xcbc = {
.common = {
.fqn = "AES_XCBC_96",
.names = "aes_xcbc,aes128_xcbc,aes_xcbc_96,aes128_xcbc_96",
.algo_type = IKE_ALG_INTEG,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = AUTH_ALGORITHM_AES_XCBC,
[IKEv2_ALG_ID] = IKEv2_INTEG_AES_XCBC_96,
#ifdef SADB_X_AALG_AES_XCBC_MAC
[SADB_ALG_ID] = SADB_X_AALG_AES_XCBC_MAC,
#endif
},
.fips.approved = false,
},
.integ_keymat_size = AES_XCBC_DIGEST_SIZE,
.integ_output_size = AES_XCBC_DIGEST_SIZE_TRUNC, /* XXX 96 */
.integ_ikev1_ah_transform = AH_AES_XCBC_MAC,
#ifdef USE_PRF_AES_XCBC
.prf = &ike_alg_prf_aes_xcbc,
#endif
.integ_netlink_xfrm_name = "xcbc(aes)",
.integ_tcpdump_name = "aes_xcbc",
.integ_ike_audit_name = "aes_xcbc",
.integ_kernel_audit_name = "AES_XCBC",
};
const struct integ_desc ike_alg_integ_aes_cmac = {
.common = {
.fqn = "AES_CMAC_96",
.names = "aes_cmac,aes_cmac_96",
.algo_type = IKE_ALG_INTEG,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = AUTH_ALGORITHM_AES_CMAC_96,
[IKEv2_ALG_ID] = IKEv2_INTEG_AES_CMAC_96,
#ifdef SADB_X_AALG_AES_CMAC_96
[SADB_ALG_ID] = SADB_X_AALG_AES_CMAC_96,
#endif
},
.fips.approved = true,
},
.integ_keymat_size = BYTES_FOR_BITS(128),
.integ_output_size = BYTES_FOR_BITS(96), /* truncated */
.integ_ikev1_ah_transform = AH_AES_CMAC_96,
.integ_netlink_xfrm_name = "cmac(aes)",
.integ_tcpdump_name = "aes_cmac",
.integ_ike_audit_name = "aes_cmac",
.integ_kernel_audit_name = "AES_CMAC_96",
};
/*
* See: https://tools.ietf.org/html/rfc4543
*/
const struct encrypt_desc ike_alg_encrypt_null_integ_aes_gmac = {
.common = {
.fqn = "NULL_AUTH_AES_GMAC",
.names = "null_auth_aes_gmac,aes_gmac",
.algo_type = IKE_ALG_ENCRYPT,
.id = {
[IKEv1_OAKLEY_ID] = -1,
[IKEv1_ESP_ID] = ESP_NULL_AUTH_AES_GMAC,
[IKEv2_ALG_ID] = IKEv2_ENCR_NULL_AUTH_AES_GMAC,
#ifdef SADB_X_EALG_NULL_AUTH_AES_GMAC
[SADB_ALG_ID] = SADB_X_EALG_NULL_AUTH_AES_GMAC,
#endif
#ifdef SADB_X_EALG_AESGMAC
[SADB_ALG_ID] = SADB_X_EALG_AESGMAC,
#endif
},
.fips.approved = true,
},
.enc_blocksize = AES_BLOCK_SIZE,
.wire_iv_size = 8,
.pad_to_blocksize = false,
.salt_size = AES_GCM_SALT_BYTES,
.keydeflen = AEAD_AES_KEY_DEF_LEN,
.key_bit_lengths = { 256, 192, 128, },
.aead_tag_size = 16,
.encrypt_netlink_xfrm_name = "rfc4543(gcm(aes))",
.encrypt_tcpdump_name = "NULL_AUTH_AES_GMAC",
.encrypt_ike_audit_name = "NULL_AUTH_AES_GMAC",
.encrypt_kernel_audit_name = "NULL_AUTH_AES_GMAC",
};
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