From d00e708cef16442cabaf23f653baf924f5d66e83 Mon Sep 17 00:00:00 2001
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Thu, 6 Apr 2006 03:26:01 +1000
Subject: [PATCH] [CRYPTO] khazad: Use 32-bit reads on key
On 64-bit platform, reading 64-bit keys (which is supposed to be
32-bit aligned) at a time will result in unaligned access.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
crypto/khazad.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/crypto/khazad.c b/crypto/khazad.c
index 807f2bf4ea24..5b8dc9a2d374 100644
--- a/crypto/khazad.c
+++ b/crypto/khazad.c
@@ -758,7 +758,7 @@ static int khazad_setkey(void *ctx_arg, const u8 *in_key,
unsigned int key_len, u32 *flags)
{
struct khazad_ctx *ctx = ctx_arg;
- const __be64 *key = (const __be64 *)in_key;
+ const __be32 *key = (const __be32 *)in_key;
int r;
const u64 *S = T7;
u64 K2, K1;
@@ -769,8 +769,9 @@ static int khazad_setkey(void *ctx_arg, const u8 *in_key,
return -EINVAL;
}
- K2 = be64_to_cpu(key[0]);
- K1 = be64_to_cpu(key[1]);
+ /* key is supposed to be 32-bit aligned */
+ K2 = ((u64)be32_to_cpu(key[0]) << 32) | be32_to_cpu(key[1]);
+ K1 = ((u64)be32_to_cpu(key[2]) << 32) | be32_to_cpu(key[3]);
/* setup the encrypt key */
for (r = 0; r <= KHAZAD_ROUNDS; r++) {
--
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