From 8ed49c7675e106bc23f34ac065d8add75e0e2f45 Mon Sep 17 00:00:00 2001
From: Joel Fernandes <joelf@ti.com>
Date: Tue, 29 Oct 2013 17:37:38 -0500
Subject: [PATCH] crypto: omap-aes - Fix CTR mode counter length
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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
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 e1e58d0ed5504..a9ccbf14096e3 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)
--
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