This is a note to let you know that I've just added the patch titled
crypto: arm/aes-ce - fix for big endian
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-arm-aes-ce-fix-for-big-endian.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 58010fa6f71c9577922b22e46014b95a4ec80fa0 Mon Sep 17 00:00:00 2001
From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Date: Tue, 11 Oct 2016 19:15:20 +0100
Subject: crypto: arm/aes-ce - fix for big endian
From: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
commit 58010fa6f71c9577922b22e46014b95a4ec80fa0 upstream.
The AES key schedule generation is mostly endian agnostic, with the
exception of the rotation and the incorporation of the round constant
at the start of each round. So implement a big endian specific version
of that part to make the whole routine big endian compatible.
Fixes: 86464859cc77 ("crypto: arm - AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/crypto/aes-ce-glue.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/arch/arm/crypto/aes-ce-glue.c
+++ b/arch/arm/crypto/aes-ce-glue.c
@@ -87,8 +87,13 @@ static int ce_aes_expandkey(struct crypt
u32 *rki = ctx->key_enc + (i * kwords);
u32 *rko = rki + kwords;
+#ifndef CONFIG_CPU_BIG_ENDIAN
rko[0] = ror32(ce_aes_sub(rki[kwords - 1]), 8);
rko[0] = rko[0] ^ rki[0] ^ rcon[i];
+#else
+ rko[0] = rol32(ce_aes_sub(rki[kwords - 1]), 8);
+ rko[0] = rko[0] ^ rki[0] ^ (rcon[i] << 24);
+#endif
rko[1] = rko[0] ^ rki[1];
rko[2] = rko[1] ^ rki[2];
rko[3] = rko[2] ^ rki[3];
Patches currently in stable-queue which might be from ard.biesheuvel@xxxxxxxxxx are
queue-4.4/crypto-arm64-aes-neon-fix-for-big-endian.patch
queue-4.4/crypto-arm64-ghash-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm64-aes-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm64-aes-xts-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm-aes-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm64-aes-ccm-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm64-sha2-ce-fix-for-big-endian.patch
queue-4.4/crypto-arm64-sha1-ce-fix-for-big-endian.patch
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