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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2017-2018 Linaro Limited
* Copyright (c) 2020 Marvell
* Copyright (c) 2021 Nokia
*/
#include <odp/helper/debug.h>
#include <odp/helper/ipsec.h>
uint32_t odph_ipsec_auth_icv_len_default(odp_auth_alg_t auth_alg)
{
uint32_t icv_len;
switch (auth_alg) {
case ODP_AUTH_ALG_NULL:
icv_len = 0;
break;
case ODP_AUTH_ALG_MD5_HMAC:
icv_len = 12;
break;
case ODP_AUTH_ALG_SHA1_HMAC:
icv_len = 12;
break;
case ODP_AUTH_ALG_SHA256_HMAC:
icv_len = 16;
break;
case ODP_AUTH_ALG_SHA384_HMAC:
icv_len = 24;
break;
case ODP_AUTH_ALG_SHA512_HMAC:
icv_len = 32;
break;
case ODP_AUTH_ALG_AES_GCM:
icv_len = 16;
break;
case ODP_AUTH_ALG_AES_GMAC:
icv_len = 16;
break;
case ODP_AUTH_ALG_AES_CCM:
icv_len = 16;
break;
case ODP_AUTH_ALG_AES_CMAC:
icv_len = 12;
break;
case ODP_AUTH_ALG_AES_XCBC_MAC:
icv_len = 12;
break;
case ODP_AUTH_ALG_CHACHA20_POLY1305:
icv_len = 16;
break;
default:
ODPH_DBG("Unsupported authentication algorithm\n");
icv_len = 0;
break;
}
return icv_len;
}
int odph_ipsec_alg_check(const odp_ipsec_capability_t *capa,
odp_cipher_alg_t cipher_alg,
uint32_t cipher_key_len,
odp_auth_alg_t auth_alg,
uint32_t auth_key_len)
{
int i, num, max_capa;
uint32_t default_icv_len;
odp_bool_t found;
/* Check whether requested cipher algorithm is supported */
switch (cipher_alg) {
case ODP_CIPHER_ALG_NULL:
if (!capa->ciphers.bit.null)
return -1;
break;
case ODP_CIPHER_ALG_DES:
if (!capa->ciphers.bit.des)
return -1;
break;
case ODP_CIPHER_ALG_3DES_CBC:
if (!capa->ciphers.bit.trides_cbc)
return -1;
break;
case ODP_CIPHER_ALG_AES_CBC:
if (!capa->ciphers.bit.aes_cbc)
return -1;
break;
case ODP_CIPHER_ALG_AES_CTR:
if (!capa->ciphers.bit.aes_ctr)
return -1;
break;
case ODP_CIPHER_ALG_AES_GCM:
if (!capa->ciphers.bit.aes_gcm)
return -1;
break;
case ODP_CIPHER_ALG_AES_CCM:
if (!capa->ciphers.bit.aes_ccm)
return -1;
break;
case ODP_CIPHER_ALG_CHACHA20_POLY1305:
if (!capa->ciphers.bit.chacha20_poly1305)
return -1;
break;
default:
ODPH_DBG("Unsupported cipher algorithm\n");
return -1;
}
/* Check whether requested auth algorithm is supported */
switch (auth_alg) {
case ODP_AUTH_ALG_NULL:
if (!capa->auths.bit.null)
return -1;
break;
case ODP_AUTH_ALG_MD5_HMAC:
if (!capa->auths.bit.md5_hmac)
return -1;
break;
case ODP_AUTH_ALG_SHA1_HMAC:
if (!capa->auths.bit.sha1_hmac)
return -1;
break;
case ODP_AUTH_ALG_SHA256_HMAC:
if (!capa->auths.bit.sha256_hmac)
return -1;
break;
case ODP_AUTH_ALG_SHA384_HMAC:
if (!capa->auths.bit.sha384_hmac)
return -1;
break;
case ODP_AUTH_ALG_SHA512_HMAC:
if (!capa->auths.bit.sha512_hmac)
return -1;
break;
case ODP_AUTH_ALG_AES_XCBC_MAC:
if (!capa->auths.bit.aes_xcbc_mac)
return -1;
break;
case ODP_AUTH_ALG_AES_GCM:
if (!capa->auths.bit.aes_gcm)
return -1;
break;
case ODP_AUTH_ALG_AES_GMAC:
if (!capa->auths.bit.aes_gmac)
return -1;
break;
case ODP_AUTH_ALG_AES_CCM:
if (!capa->auths.bit.aes_ccm)
return -1;
break;
case ODP_AUTH_ALG_AES_CMAC:
if (!capa->auths.bit.aes_cmac)
return -1;
break;
case ODP_AUTH_ALG_CHACHA20_POLY1305:
if (!capa->auths.bit.chacha20_poly1305)
return -1;
break;
default:
ODPH_DBG("Unsupported authentication algorithm\n");
return -1;
}
/* Check whether requested cipher key length is supported */
max_capa = odp_ipsec_cipher_capability(cipher_alg, NULL, 0);
if (max_capa <= 0)
return -1;
odp_ipsec_cipher_capability_t cipher_capa[max_capa];
num = odp_ipsec_cipher_capability(cipher_alg, cipher_capa, max_capa);
if (num <= 0) {
ODPH_DBG("Could not get cipher capabilities\n");
return -1;
}
found = false;
for (i = 0; i < num; i++) {
if (cipher_capa[i].key_len == cipher_key_len) {
found = 1;
break;
}
}
if (!found) {
ODPH_DBG("Unsupported key length\n");
return -1;
}
/* Check whether requested auth key length is supported */
max_capa = odp_ipsec_auth_capability(auth_alg, NULL, 0);
if (max_capa <= 0)
return max_capa;
odp_ipsec_auth_capability_t auth_capa[max_capa];
num = odp_ipsec_auth_capability(auth_alg, auth_capa, max_capa);
if (num <= 0) {
ODPH_DBG("Could not get auth capabilities\n");
return -1;
}
default_icv_len = odph_ipsec_auth_icv_len_default(auth_alg);
found = false;
for (i = 0; i < num; i++) {
if (auth_capa[i].key_len == auth_key_len &&
auth_capa[i].icv_len == default_icv_len) {
found = 1;
break;
}
}
if (!found) {
ODPH_DBG("Unsupported auth key length & ICV length pair\n");
return -1;
}
return 0;
}
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