* [PATCH] crypto: omap-aes: Fix CTR mode counter length
@ 2013-10-29 22:37 Joel Fernandes
2013-10-30 4:11 ` Herbert Xu
0 siblings, 1 reply; 2+ messages in thread
From: Joel Fernandes @ 2013-10-29 22:37 UTC (permalink / raw)
To: linux-crypto; +Cc: linux-omap, linux-kernel, Herbert Xu, Joel Fernandes
NIST vectors for CTR mode in testmgr.h assume the entire IV as the counter. To
get correct results that match the output of these vectors, we need to set the
counter length correctly.
Signed-off-by: Joel Fernandes <joelf@ti.com>
---
drivers/crypto/omap-aes.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index ce791c2..19055a1 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -275,7 +275,7 @@ static int omap_aes_write_ctrl(struct omap_aes_dev *dd)
if (dd->flags & FLAGS_CBC)
val |= AES_REG_CTRL_CBC;
if (dd->flags & FLAGS_CTR) {
- val |= AES_REG_CTRL_CTR | AES_REG_CTRL_CTR_WIDTH_32;
+ val |= AES_REG_CTRL_CTR | AES_REG_CTRL_CTR_WIDTH_128;
mask = AES_REG_CTRL_CTR | AES_REG_CTRL_CTR_WIDTH_MASK;
}
if (dd->flags & FLAGS_ENCRYPT)
--
1.8.1.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-10-30 4:11 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-10-29 22:37 [PATCH] crypto: omap-aes: Fix CTR mode counter length Joel Fernandes
2013-10-30 4:11 ` Herbert Xu
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox