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crypto: ccp - AES CFB mode is a stream cipher 

CFB mode should be treated as a stream cipher, not block.

Fixes: 63b945091a ('crypto: ccp - CCP device driver and interface support')

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
alistair/sunxi64-5.4-dsi
Hook, Gary 2019-05-14 21:53:16 +00:00 committed by Herbert Xu
parent efc77e8107
commit 499df9674c
1 changed files with 3 additions and 3 deletions
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6
drivers/crypto/ccp/ccp-ops.c
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@ -1,7 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* AMD Cryptographic Coprocessor (CCP) driver
*
* Copyright (C) 2013,2018 Advanced Micro Devices, Inc.
* Copyright (C) 2013-2019 Advanced Micro Devices, Inc.
*
* Author: Tom Lendacky <thomas.lendacky@amd.com>
* Author: Gary R Hook <gary.hook@amd.com>
@ -893,8 +894,7 @@ static int ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
return -EINVAL;
if (((aes->mode == CCP_AES_MODE_ECB) ||
(aes->mode == CCP_AES_MODE_CBC) ||
(aes->mode == CCP_AES_MODE_CFB)) &&
(aes->mode == CCP_AES_MODE_CBC)) &&
(aes->src_len & (AES_BLOCK_SIZE - 1)))
return -EINVAL;