From patchwork Wed May 26 08:44:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tianjia.zhang" X-Patchwork-Id: 12280909 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D1A5C2B9F7 for ; Wed, 26 May 2021 08:44:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 30E56613CD for ; Wed, 26 May 2021 08:44:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232277AbhEZIq3 (ORCPT ); Wed, 26 May 2021 04:46:29 -0400 Received: from out30-132.freemail.mail.aliyun.com ([115.124.30.132]:54785 "EHLO out30-132.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229594AbhEZIq2 (ORCPT ); Wed, 26 May 2021 04:46:28 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=tianjia.zhang@linux.alibaba.com;NM=1;PH=DS;RN=5;SR=0;TI=SMTPD_---0Ua9vSE6_1622018695; Received: from localhost(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0Ua9vSE6_1622018695) by smtp.aliyun-inc.com(127.0.0.1); Wed, 26 May 2021 16:44:56 +0800 From: Tianjia Zhang To: Mimi Zohar , Vitaly Chikunov , linux-integrity@vger.kernel.org, Jia Zhang Cc: Tianjia Zhang Subject: [PATCH ima-evm-utils v3] ima-evm-utils: Support SM2 algorithm for sign and verify Date: Wed, 26 May 2021 16:44:55 +0800 Message-Id: <20210526084455.56705-1-tianjia.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.19.1.3.ge56e4f7 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org The combination of SM2 and SM3 algorithms has been implemented in the kernel. At present, the ima-evm-utils signature tool does not support this combination of algorithms. Because in the current version of OpenSSL 1.1.1, the SM2 algorithm and the public key using the EC algorithm share the same ID 'EVP_PKEY_EC', and the specific algorithm can only be distinguished by the curve name used. This patch supports this feature. Signed-off-by: Tianjia Zhang --- src/libimaevm.c | 20 ++++++++++++++++++++ tests/gen-keys.sh | 22 ++++++++++++++++++++++ tests/ima_hash.test | 3 +-- tests/sign_verify.test | 2 ++ 4 files changed, 45 insertions(+), 2 deletions(-) diff --git a/src/libimaevm.c b/src/libimaevm.c index fa6c278..589dd09 100644 --- a/src/libimaevm.c +++ b/src/libimaevm.c @@ -518,6 +518,16 @@ static int verify_hash_v2(const char *file, const unsigned char *hash, int size, return -1; } +#ifdef EVP_PKEY_SM2 + /* If EC key are used, check whether it is SM2 key */ + if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) { + EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey); + int curve = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec)); + if (curve == NID_sm2) + EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2); + } +#endif + st = "EVP_PKEY_CTX_new"; if (!(ctx = EVP_PKEY_CTX_new(pkey, NULL))) goto err; @@ -932,6 +942,16 @@ static int sign_hash_v2(const char *algo, const unsigned char *hash, return -1; } +#ifdef EVP_PKEY_SM2 + /* If EC key are used, check whether it is SM2 key */ + if (EVP_PKEY_id(pkey) == EVP_PKEY_EC) { + EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey); + int curve = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec)); + if (curve == NID_sm2) + EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2); + } +#endif + calc_keyid_v2(&keyid, name, pkey); hdr->keyid = keyid; diff --git a/tests/gen-keys.sh b/tests/gen-keys.sh index 46130cf..a75dc2e 100755 --- a/tests/gen-keys.sh +++ b/tests/gen-keys.sh @@ -112,6 +112,28 @@ for m in \ fi done +# SM2 +for curve in sm2; do + if [ "$1" = clean ] || [ "$1" = force ]; then + rm -f test-$curve.cer test-$curve.key test-$curve.pub + fi + if [ "$1" = clean ]; then + continue + fi + if [ ! -e test-$curve.key ]; then + log openssl req -verbose -new -nodes -utf8 -days 10000 -batch -x509 \ + -sm3 -sigopt "distid:1234567812345678" \ + -config test-ca.conf \ + -copy_extensions copyall \ + -newkey $curve \ + -out test-$curve.cer -outform DER \ + -keyout test-$curve.key + if [ -s test-$curve.key ]; then + log openssl pkey -in test-$curve.key -out test-$curve.pub -pubout + fi + fi +done + # This script leaves test-ca.conf, *.cer, *.pub, *.key files for sing/verify tests. # They are never deleted except by `make distclean'. diff --git a/tests/ima_hash.test b/tests/ima_hash.test index 8d66e59..46de4c9 100755 --- a/tests/ima_hash.test +++ b/tests/ima_hash.test @@ -70,8 +70,7 @@ expect_pass check sha256 0x0404 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649 expect_pass check sha384 0x0405 38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b expect_pass check sha512 0x0406 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e expect_pass check rmd160 0x0403 9c1185a5c5e9fc54612808977ee8f548b2258d31 -expect_fail check sm3 0x01 -expect_fail check sm3-256 0x01 +expect_pass check sm3 0x01 1ab21d8355cfa17f8e61194831e81a8f22bec8c728fefb747ed035eb5082aa2b _enable_gost_engine expect_pass check md_gost12_256 0x0412 3f539a213e97c802cc229d474c6aa32a825a360b2a933a949fd925208d9ce1bb expect_pass check streebog256 0x0412 3f539a213e97c802cc229d474c6aa32a825a360b2a933a949fd925208d9ce1bb diff --git a/tests/sign_verify.test b/tests/sign_verify.test index 3d7aa51..7ad2d96 100755 --- a/tests/sign_verify.test +++ b/tests/sign_verify.test @@ -387,6 +387,8 @@ sign_verify prime256v1 sha256 0x030204:K:004[345678] sign_verify prime256v1 sha384 0x030205:K:004[345678] sign_verify prime256v1 sha512 0x030206:K:004[345678] +sign_verify sm2 sm3 0x030211:K:004[345678] + # Test v2 signatures with EC-RDSA _enable_gost_engine sign_verify gost2012_256-A md_gost12_256 0x030212:K:0040