From patchwork Mon Sep 9 14:16:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 13797174 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4151DECE579 for ; Mon, 9 Sep 2024 14:21:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1snfDP-0003xq-CN; Mon, 09 Sep 2024 10:18:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1snfDA-0002UN-RT for qemu-devel@nongnu.org; Mon, 09 Sep 2024 10:17:50 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1snfD7-0003QN-Lg for qemu-devel@nongnu.org; Mon, 09 Sep 2024 10:17:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1725891465; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=k9/tGajAtWoDx1VNQGN8/qbY8n3LIiVuLQPmyt2WZLo=; b=YWrFlYSFzFtFQ57cggj9WUuCrwXNqe7G2RVti2AnnQwoVEa3sSV4bq+B0RVJ+1CZrr1jAG PjQ+mkzQxTf6cYJPGwVrwuTPyXnK9VzqfMtflCY/dJEwnW7YXabVU/s81pE4aZSgZ6D5oQ wHWaurCqbtlb9faV/g/38/8AxbOkn3c= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-2-bD5Wy_wfMvKHV_gfFv0ShA-1; Mon, 09 Sep 2024 10:17:42 -0400 X-MC-Unique: bD5Wy_wfMvKHV_gfFv0ShA-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B553E1977023; Mon, 9 Sep 2024 14:17:39 +0000 (UTC) Received: from toolbox.redhat.com (unknown [10.42.28.212]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 217AA1956054; Mon, 9 Sep 2024 14:17:34 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Hyman Huang , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , =?utf-8?q?Marc?= =?utf-8?q?-Andr=C3=A9_Lureau?= , Eric Blake , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Hanna Reitz , qemu-block@nongnu.org, qemu-stable@nongnu.org, Laurent Vivier , Thomas Huth , Paolo Bonzini , Kevin Wolf , Markus Armbruster , Dorjoy Chowdhury Subject: [PULL 10/10] crypto: Introduce x509 utils Date: Mon, 9 Sep 2024 15:16:35 +0100 Message-ID: <20240909141635.1459701-11-berrange@redhat.com> In-Reply-To: <20240909141635.1459701-1-berrange@redhat.com> References: <20240909141635.1459701-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.141, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Dorjoy Chowdhury An utility function for getting fingerprint from X.509 certificate has been introduced. Implementation only provided using gnutls. Signed-off-by: Dorjoy Chowdhury [DB: fixed missing gnutls_x509_crt_deinit in success path] Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Daniel P. Berrangé --- crypto/meson.build | 4 ++ crypto/x509-utils.c | 76 +++++++++++++++++++++++++++++++++++++ include/crypto/x509-utils.h | 22 +++++++++++ 3 files changed, 102 insertions(+) create mode 100644 crypto/x509-utils.c create mode 100644 include/crypto/x509-utils.h diff --git a/crypto/meson.build b/crypto/meson.build index c46f9c22a7..735635de1f 100644 --- a/crypto/meson.build +++ b/crypto/meson.build @@ -24,6 +24,10 @@ crypto_ss.add(files( 'rsakey.c', )) +if gnutls.found() + crypto_ss.add(files('x509-utils.c')) +endif + if nettle.found() crypto_ss.add(nettle, files('hash-nettle.c', 'hmac-nettle.c', 'pbkdf-nettle.c')) if hogweed.found() diff --git a/crypto/x509-utils.c b/crypto/x509-utils.c new file mode 100644 index 0000000000..6e157af76b --- /dev/null +++ b/crypto/x509-utils.c @@ -0,0 +1,76 @@ +/* + * X.509 certificate related helpers + * + * Copyright (c) 2024 Dorjoy Chowdhury + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "crypto/x509-utils.h" +#include +#include +#include + +static const int qcrypto_to_gnutls_hash_alg_map[QCRYPTO_HASH_ALG__MAX] = { + [QCRYPTO_HASH_ALG_MD5] = GNUTLS_DIG_MD5, + [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_DIG_SHA1, + [QCRYPTO_HASH_ALG_SHA224] = GNUTLS_DIG_SHA224, + [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_DIG_SHA256, + [QCRYPTO_HASH_ALG_SHA384] = GNUTLS_DIG_SHA384, + [QCRYPTO_HASH_ALG_SHA512] = GNUTLS_DIG_SHA512, + [QCRYPTO_HASH_ALG_RIPEMD160] = GNUTLS_DIG_RMD160, +}; + +int qcrypto_get_x509_cert_fingerprint(uint8_t *cert, size_t size, + QCryptoHashAlgorithm alg, + uint8_t *result, + size_t *resultlen, + Error **errp) +{ + int ret = -1; + int hlen; + gnutls_x509_crt_t crt; + gnutls_datum_t datum = {.data = cert, .size = size}; + + if (alg >= G_N_ELEMENTS(qcrypto_to_gnutls_hash_alg_map)) { + error_setg(errp, "Unknown hash algorithm"); + return -1; + } + + if (result == NULL) { + error_setg(errp, "No valid buffer given"); + return -1; + } + + gnutls_x509_crt_init(&crt); + + if (gnutls_x509_crt_import(crt, &datum, GNUTLS_X509_FMT_PEM) != 0) { + error_setg(errp, "Failed to import certificate"); + goto cleanup; + } + + hlen = gnutls_hash_get_len(qcrypto_to_gnutls_hash_alg_map[alg]); + if (*resultlen < hlen) { + error_setg(errp, + "Result buffer size %zu is smaller than hash %d", + *resultlen, hlen); + goto cleanup; + } + + if (gnutls_x509_crt_get_fingerprint(crt, + qcrypto_to_gnutls_hash_alg_map[alg], + result, resultlen) != 0) { + error_setg(errp, "Failed to get fingerprint from certificate"); + goto cleanup; + } + + ret = 0; + + cleanup: + gnutls_x509_crt_deinit(crt); + return ret; +} diff --git a/include/crypto/x509-utils.h b/include/crypto/x509-utils.h new file mode 100644 index 0000000000..4210dfbcfc --- /dev/null +++ b/include/crypto/x509-utils.h @@ -0,0 +1,22 @@ +/* + * X.509 certificate related helpers + * + * Copyright (c) 2024 Dorjoy Chowdhury + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#ifndef QCRYPTO_X509_UTILS_H +#define QCRYPTO_X509_UTILS_H + +#include "crypto/hash.h" + +int qcrypto_get_x509_cert_fingerprint(uint8_t *cert, size_t size, + QCryptoHashAlgorithm hash, + uint8_t *result, + size_t *resultlen, + Error **errp); + +#endif