linux-kernel - [PATCH 4.7 120/143] crypto: qat

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Message-Id: <20160905164435.699360241@linuxfoundation.org>
Date:   Mon,  5 Sep 2016 18:44:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wenqian Yu <wenqian.yu@...el.com>,
        Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.7 120/143] crypto: qat - fix aes-xts key sizes

4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Giovanni Cabiddu <giovanni.cabiddu@...el.com>

commit 10bb087ce381c812cd81a65ffd5e6f83e6399291 upstream.

Increase value of supported key sizes for qat_aes_xts.
aes-xts keys consists of keys of equal size concatenated.

Fixes: def14bfaf30d ("crypto: qat - add support for ctr(aes) and xts(aes)")
Reported-by: Wenqian Yu <wenqian.yu@...el.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@...el.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/crypto/qat/qat_common/qat_algs.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -1260,8 +1260,8 @@ static struct crypto_alg qat_algs[] = {
 			.setkey = qat_alg_ablkcipher_xts_setkey,
 			.decrypt = qat_alg_ablkcipher_decrypt,
 			.encrypt = qat_alg_ablkcipher_encrypt,
-			.min_keysize = AES_MIN_KEY_SIZE,
-			.max_keysize = AES_MAX_KEY_SIZE,
+			.min_keysize = 2 * AES_MIN_KEY_SIZE,
+			.max_keysize = 2 * AES_MAX_KEY_SIZE,
 			.ivsize = AES_BLOCK_SIZE,
 		},
 	},