[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>
diff --git a/crypto/ctr.c b/crypto/ctr.c
index 1052b31..2d7425f 100644
--- a/crypto/ctr.c
+++ b/crypto/ctr.c
@@ -361,6 +361,8 @@
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;