From patchwork Mon Jan 7 02:26:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jia Zhang X-Patchwork-Id: 10749793 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 599E313B5 for ; Mon, 7 Jan 2019 02:26:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 42745289E5 for ; Mon, 7 Jan 2019 02:26:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 354C828A0C; Mon, 7 Jan 2019 02:26:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A71F8289E5 for ; Mon, 7 Jan 2019 02:26:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726383AbfAGC0w (ORCPT ); Sun, 6 Jan 2019 21:26:52 -0500 Received: from out30-130.freemail.mail.aliyun.com ([115.124.30.130]:48213 "EHLO out30-130.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726270AbfAGC0w (ORCPT ); Sun, 6 Jan 2019 21:26:52 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R131e4;CH=green;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01353;MF=zhang.jia@linux.alibaba.com;NM=1;PH=DS;RN=5;SR=0;TI=SMTPD_---0THgoDmB_1546827991; Received: from localhost(mailfrom:zhang.jia@linux.alibaba.com fp:SMTPD_---0THgoDmB_1546827991) by smtp.aliyun-inc.com(127.0.0.1); Mon, 07 Jan 2019 10:26:32 +0800 From: Jia Zhang To: zohar@linux.vnet.ibm.com, pvorel@suse.cz Cc: linux-integrity@vger.kernel.org, ltp@lists.linux.it, zhang.jia@linux.alibaba.com Subject: [PATCH 2/6] ima/ima_boot_aggregate: Don't hard code the length of sha1 hash Date: Mon, 7 Jan 2019 10:26:25 +0800 Message-Id: <1546827989-43569-3-git-send-email-zhang.jia@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1546827989-43569-1-git-send-email-zhang.jia@linux.alibaba.com> References: <1546827989-43569-1-git-send-email-zhang.jia@linux.alibaba.com> Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Instead, use SHA_DIGEST_LENGTH. Signed-off-by: Jia Zhang Reviewed-by: Mimi Zohar --- testcases/kernel/security/integrity/ima/src/ima_boot_aggregate.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/testcases/kernel/security/integrity/ima/src/ima_boot_aggregate.c b/testcases/kernel/security/integrity/ima/src/ima_boot_aggregate.c index d85d222..67be6a7 100644 --- a/testcases/kernel/security/integrity/ima/src/ima_boot_aggregate.c +++ b/testcases/kernel/security/integrity/ima/src/ima_boot_aggregate.c @@ -42,7 +42,7 @@ static void display_sha1_digest(unsigned char *pcr) { int i; - for (i = 0; i < 20; i++) + for (i = 0; i < SHA_DIGEST_LENGTH; i++) printf("%02x", *(pcr + i) & 0xff); printf("\n"); } @@ -94,8 +94,9 @@ int main(int argc, char *argv[]) display_sha1_digest(event.header.digest); } SHA1_Init(&c); - SHA1_Update(&c, pcr[event.header.pcr].digest, 20); - SHA1_Update(&c, event.header.digest, 20); + SHA1_Update(&c, pcr[event.header.pcr].digest, + SHA_DIGEST_LENGTH); + SHA1_Update(&c, event.header.digest, SHA_DIGEST_LENGTH); SHA1_Final(pcr[event.header.pcr].digest, &c); #if MAX_EVENT_DATA_SIZE < USHRT_MAX if (event.header.len > MAX_EVENT_DATA_SIZE) { @@ -116,7 +117,7 @@ int main(int argc, char *argv[]) printf("PCR-%2.2x: ", i); display_sha1_digest(pcr[i].digest); } - SHA1_Update(&c, pcr[i].digest, 20); + SHA1_Update(&c, pcr[i].digest, SHA_DIGEST_LENGTH); } SHA1_Final(boot_aggregate, &c);