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author“mukeshyadav1984” <mukyadav@cisco.com>2017-11-28 10:52:34 -0800
committerDamjan Marion <dmarion.lists@gmail.com>2017-11-29 10:18:41 +0000
commit72454dd4c5196594b366883bbf732c9e067c64ec (patch)
tree7d3b1398317da09e3cd52cd45fef871857a11a6e /src/vnet/ipsec/esp_decrypt.c
parent176fd570e672e7307710e448eb51c08b7f9853d8 (diff)
DES-CBC/3DES-CBC support for VPP IPSec Core
Change-Id: I876f215b129e5e59d3acc6447ce40458cc341eba Signed-off-by: “mukeshyadav1984” <mukyadav@cisco.com>
Diffstat (limited to 'src/vnet/ipsec/esp_decrypt.c')
-rw-r--r--src/vnet/ipsec/esp_decrypt.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c
index fac40358f16..a769e6bd51a 100644
--- a/src/vnet/ipsec/esp_decrypt.c
+++ b/src/vnet/ipsec/esp_decrypt.c
@@ -81,8 +81,8 @@ format_esp_decrypt_trace (u8 * s, va_list * args)
}
always_inline void
-esp_decrypt_aes_cbc (ipsec_crypto_alg_t alg,
- u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
+esp_decrypt_cbc (ipsec_crypto_alg_t alg,
+ u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
{
ipsec_proto_main_t *em = &ipsec_proto_main;
u32 thread_index = vlib_get_thread_index ();
@@ -246,11 +246,15 @@ esp_decrypt_node_fn (vlib_main_t * vm,
/* add old buffer to the recycle list */
vec_add1 (recycle, i_bi0);
- if (sa0->crypto_alg >= IPSEC_CRYPTO_ALG_AES_CBC_128 &&
- sa0->crypto_alg <= IPSEC_CRYPTO_ALG_AES_CBC_256)
+ if ((sa0->crypto_alg >= IPSEC_CRYPTO_ALG_AES_CBC_128 &&
+ sa0->crypto_alg <= IPSEC_CRYPTO_ALG_AES_CBC_256) ||
+ (sa0->crypto_alg >= IPSEC_CRYPTO_ALG_DES_CBC &&
+ sa0->crypto_alg <= IPSEC_CRYPTO_ALG_3DES_CBC))
{
- const int BLOCK_SIZE = 16;
- const int IV_SIZE = 16;
+ const int BLOCK_SIZE =
+ em->ipsec_proto_main_crypto_algs[sa0->crypto_alg].block_size;;
+ const int IV_SIZE =
+ em->ipsec_proto_main_crypto_algs[sa0->crypto_alg].iv_size;
esp_footer_t *f0;
u8 ip_hdr_size = 0;
@@ -298,13 +302,13 @@ esp_decrypt_node_fn (vlib_main_t * vm,
}
}
- esp_decrypt_aes_cbc (sa0->crypto_alg,
- esp0->data + IV_SIZE,
- (u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size, BLOCK_SIZE * blocks,
- sa0->crypto_key, esp0->data);
+ esp_decrypt_cbc (sa0->crypto_alg,
+ esp0->data + IV_SIZE,
+ (u8 *) vlib_buffer_get_current (o_b0) +
+ ip_hdr_size, BLOCK_SIZE * blocks,
+ sa0->crypto_key, esp0->data);
- o_b0->current_length = (blocks * 16) - 2 + ip_hdr_size;
+ o_b0->current_length = (blocks * BLOCK_SIZE) - 2 + ip_hdr_size;
o_b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
f0 =
(esp_footer_t *) ((u8 *) vlib_buffer_get_current (o_b0) +