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 S1726891AbgHGQWQ (ORCPT ); Fri, 7 Aug 2020 12:22:16 -0400 From: Andrei Botila Subject: [PATCH 11/22] crypto: artpec6 - add check for xts input length equal to zero Date: Fri, 7 Aug 2020 19:19:59 +0300 Message-Id: <20200807162010.18979-12-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 , Jesper Nilsson , Lars Persson 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: Jesper Nilsson Cc: Lars Persson Signed-off-by: Andrei Botila --- drivers/crypto/axis/artpec6_crypto.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/artpec6_crypto.c index 1a46eeddf082..243880c97629 100644 --- a/drivers/crypto/axis/artpec6_crypto.c +++ b/drivers/crypto/axis/artpec6_crypto.c @@ -1090,6 +1090,9 @@ static int artpec6_crypto_encrypt(struct skcipher_request *req) void (*complete)(struct crypto_async_request *req); int ret; + if (!req->cryptlen) + return 0; + req_ctx = skcipher_request_ctx(req); switch (ctx->crypto_type) { @@ -1135,6 +1138,9 @@ static int artpec6_crypto_decrypt(struct skcipher_request *req) struct artpec6_crypto_request_context *req_ctx = NULL; void (*complete)(struct crypto_async_request *req); + if (!req->cryptlen) + return 0; + req_ctx = skcipher_request_ctx(req); switch (ctx->crypto_type) { -- 2.17.1