From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr140057.outbound.protection.outlook.com ([40.107.14.57]:4231 "EHLO EUR01-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726955AbgHGQWL (ORCPT ); Fri, 7 Aug 2020 12:22:11 -0400 From: Andrei Botila Subject: [PATCH 10/22] crypto: atmel-aes - add check for xts input length equal to zero Date: Fri, 7 Aug 2020 19:19:58 +0300 Message-Id: <20200807162010.18979-11-andrei.botila@oss.nxp.com> In-Reply-To: <20200807162010.18979-1-andrei.botila@oss.nxp.com> References: <20200807162010.18979-1-andrei.botila@oss.nxp.com> Content-Type: text/plain MIME-Version: 1.0 Sender: linux-s390-owner@vger.kernel.org List-ID: To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, linux-arm-kernel@axis.com, Andrei Botila , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches From: Andrei Botila Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Nicolas Ferre Cc: Alexandre Belloni Cc: Ludovic Desroches Signed-off-by: Andrei Botila --- drivers/crypto/atmel-aes.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index a6e14491e080..af789ac73478 100644 --- a/drivers/crypto/atmel-aes.c +++ b/drivers/crypto/atmel-aes.c @@ -1107,6 +1107,10 @@ static int atmel_aes_crypt(struct skcipher_request *req, unsigned long mode) ctx->block_size = CFB64_BLOCK_SIZE; break; + case AES_FLAGS_XTS: + if (!req->cryptlen) + return 0; + default: ctx->block_size = AES_BLOCK_SIZE; break; -- 2.17.1