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authorNeale Ranns <nranns@cisco.com>2019-04-11 15:14:07 +0000
committerNeale Ranns <nranns@cisco.com>2019-04-17 00:12:05 +0000
commit32b13bba2e3013a1b2a67eca8fe6a177d8e927ed (patch)
tree97dbae11a361e7537be09329c80ae7c3a3acb799 /src/plugins
parent07a4d675c8d1b1bc19fa1846369f610ab91a9aba (diff)
IPSEC: support GCM in ESP
Change-Id: Id2ddb77b4ec3dd543d6e638bc882923f2bac011d Signed-off-by: Neale Ranns <nranns@cisco.com> (cherry picked from commit 47feb1146ec3b0e1cf2ebd83cd5211e1df261194)
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/crypto_openssl/main.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/plugins/crypto_openssl/main.c b/src/plugins/crypto_openssl/main.c
index 0c8c17dc423..c97710ddbcb 100644
--- a/src/plugins/crypto_openssl/main.c
+++ b/src/plugins/crypto_openssl/main.c
@@ -112,14 +112,18 @@ openssl_ops_enc_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
for (i = 0; i < n_ops; i++)
{
vnet_crypto_op_t *op = ops[i];
+ u32 nonce[3];
int len;
if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
RAND_bytes (op->iv, 8);
+ nonce[0] = op->salt;
+ clib_memcpy_fast (nonce + 1, op->iv, 8);
+
EVP_EncryptInit_ex (ctx, cipher, 0, 0, 0);
- EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, 8, NULL);
- EVP_EncryptInit_ex (ctx, 0, 0, op->key, op->iv);
+ EVP_CIPHER_CTX_ctrl (ctx, EVP_CTRL_GCM_SET_IVLEN, 12, NULL);
+ EVP_EncryptInit_ex (ctx, 0, 0, op->key, (u8 *) nonce);
if (op->aad_len)
EVP_EncryptUpdate (ctx, NULL, &len, op->aad, op->aad_len);
EVP_EncryptUpdate (ctx, op->dst, &len, op->src, op->len);