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[IPSEC]: Add support for aes-ctr.

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The below patch allows IPsec to use CTR mode with AES encryption
algorithm. Tested this using setkey in ipsec-tools.

Signed-off-by: Joy Latten <latten@austin.ibm.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joy Latten 2008-02-07 23:11:56 -08:00 committed by David S. Miller
parent 054b0e2b2d
commit 405137d16f
2 changed files with 18 additions and 0 deletions
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1
include/linux/pfkeyv2.h
View file

@ -298,6 +298,7 @@ struct sadb_x_sec_ctx {
#define SADB_X_EALG_BLOWFISHCBC 7 #define SADB_X_EALG_BLOWFISHCBC 7
#define SADB_EALG_NULL 11 #define SADB_EALG_NULL 11
#define SADB_X_EALG_AESCBC 12 #define SADB_X_EALG_AESCBC 12
#define SADB_X_EALG_AESCTR 13
#define SADB_X_EALG_AES_CCM_ICV8 14 #define SADB_X_EALG_AES_CCM_ICV8 14
#define SADB_X_EALG_AES_CCM_ICV12 15 #define SADB_X_EALG_AES_CCM_ICV12 15
#define SADB_X_EALG_AES_CCM_ICV16 16 #define SADB_X_EALG_AES_CCM_ICV16 16

17
net/xfrm/xfrm_algo.c
View file

@ -399,6 +399,23 @@ static struct xfrm_algo_desc ealg_list[] = {
.sadb_alg_maxbits = 256 .sadb_alg_maxbits = 256
} }
}, },
{
.name = "rfc3686(ctr(aes))",
.uinfo = {
.encr = {
.blockbits = 128,
.defkeybits = 160, /* 128-bit key + 32-bit nonce */
}
},
.desc = {
.sadb_alg_id = SADB_X_EALG_AESCTR,
.sadb_alg_ivlen = 8,
.sadb_alg_minbits = 128,
.sadb_alg_maxbits = 256
}
},
}; };
static struct xfrm_algo_desc calg_list[] = { static struct xfrm_algo_desc calg_list[] = {