From 0a270321dbf948963aeb0e8382fe17d2c2eb3771 Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 30 Nov 2007 21:38:37 +1100
Subject: [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>
---
 crypto/Kconfig | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'crypto/Kconfig')

diff --git a/crypto/Kconfig b/crypto/Kconfig
index c4b6c91..7ad9711 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -32,6 +32,14 @@ config CRYPTO_BLKCIPHER
 	tristate
 	select CRYPTO_ALGAPI
 
+config CRYPTO_SEQIV
+	tristate "Sequence Number IV Generator"
+	select CRYPTO_BLKCIPHER
+	help
+	  This IV 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.
+
 config CRYPTO_HASH
 	tristate
 	select CRYPTO_ALGAPI
@@ -197,6 +205,7 @@ config CRYPTO_XTS
 config CRYPTO_CTR
 	tristate "CTR support"
 	select CRYPTO_BLKCIPHER
+	select CRYPTO_SEQIV
 	select CRYPTO_MANAGER
 	help
 	  CTR: Counter mode
-- 
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