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authorHerbert Xu <herbert@gondor.apana.org.au>2007-11-30 21:38:37 +1100
committerHerbert Xu <herbert@gondor.apana.org.au>2008-01-11 08:16:48 +1100
commit0a270321dbf948963aeb0e8382fe17d2c2eb3771 (patch)
treebdb6c12f88bd02b62853ff6bf26bf9d4a736fdbd /crypto/ctr.c
parent45d44eb56ad197cfccb8f84b5df64abff8b7cb96 (diff)
downloadlinux-stericsson-0a270321dbf948963aeb0e8382fe17d2c2eb3771.tar.gz
[CRYPTO] seqiv: Add Sequence Number IV Generator
This generator generates an IV based on a sequence number by xoring it with a salt. This algorithm is mainly useful for CTR and similar modes. This patch also sets it as the default IV generator for ctr. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/ctr.c')
-rw-r--r--crypto/ctr.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/ctr.c b/crypto/ctr.c
index 1052b318aed2..2d7425f0e7b8 100644
--- a/crypto/ctr.c
+++ b/crypto/ctr.c
@@ -361,6 +361,8 @@ static struct crypto_instance *crypto_rfc3686_alloc(struct rtattr **tb)
inst->alg.cra_blkcipher.max_keysize = alg->cra_blkcipher.max_keysize
+ CTR_RFC3686_NONCE_SIZE;
+ inst->alg.cra_blkcipher.geniv = "seqiv";
+
inst->alg.cra_ctxsize = sizeof(struct crypto_rfc3686_ctx);
inst->alg.cra_init = crypto_rfc3686_init_tfm;