From patchwork Thu Aug 22 15:08:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dorjoy Chowdhury X-Patchwork-Id: 13773703 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 A0268C531DF for ; Thu, 22 Aug 2024 15:10:07 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sh9RV-0007lT-AD; Thu, 22 Aug 2024 11:09:42 -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 1sh9RQ-0007dq-0z for qemu-devel@nongnu.org; Thu, 22 Aug 2024 11:09:36 -0400 Received: from mail-pj1-x102f.google.com ([2607:f8b0:4864:20::102f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sh9RI-00052O-H5 for qemu-devel@nongnu.org; Thu, 22 Aug 2024 11:09:35 -0400 Received: by mail-pj1-x102f.google.com with SMTP id 98e67ed59e1d1-2d3b595c18dso1547410a91.0 for ; Thu, 22 Aug 2024 08:09:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724339367; x=1724944167; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=GeAwo6rJ9Ssp7fNXqJixt1EPPvNs6AeUb8bCCXYa7xY=; b=hB8yH1v1XsMIB+frIz8vnQpASVGzCH3uSy4Laj3zgqx4PE7PUVvnvKyGC7Bw88tGcj gbNM6x1LUqbzeYx20oO+GeiQ1qyuodwWQiUFfInTon3NOnLEv/2bjHfNtguhj4w3o9/w Tb+E0xMdbcydWHQgxYYHsEvCoHSPXUek4/wDJWD8tRY85CqClKdrCyP5iUcbXX3qSXvl o5WkvKtMWJT5m8o4tBE5hdW/qIODTjL+N9H8iBF5dqIP+RUF6wMDbe5HPmbbQQoyUIPJ 8Org8LkXVShYlnuQwZzJLlv23Rruqe5nBA9np5RIA427LF4AwlbcbQJrjfb8S5ANnuYP ulaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724339367; x=1724944167; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GeAwo6rJ9Ssp7fNXqJixt1EPPvNs6AeUb8bCCXYa7xY=; b=eq5rhUMZTQPajDbZ9HZjH0O62jFCIWtya+jGgEi3tHIOlnm9rRrL6XLogCSHcTDqC2 T4VYXg6GaoIZIE8aCBFL33f1AbSYqd3hUIqSojy6whYUlbDxu1ZPEST8pEbBclrvvBOI DzXKKTsoddlNONan0zE6ujeRq+fj8FSUvq/PxuCYIGmnJYgc96GUVixSLWzW/aG53nj2 +YI9w6+ivnbEjyN433yBYfmPwSH69itBltGD8yKeIjHCKGKSfNmojKxLj72FVaCH7B/l uIJTLLWjCnlNKO7VjBxy8U7CxntCAZkhenmwNs3gXzv+a4mbavZIX2PL54gs7t7kM3/D L3Mw== X-Gm-Message-State: AOJu0YykvI3R+eY2YdpTuaC7/mSEKqy7bouJ7tyurgB50mnwzjqVjRh8 N9GiAjYUHLkZhXAOaAUPPd/FLHs1lWmqcjCci1EhGvysK6hDpvEATCP+yQ== X-Google-Smtp-Source: AGHT+IHTPFPRE9v35Z52EqGf1ZXU39olEwYHZBhKEzYW9SlscFqfSPhB8wCeUIhlzUDUnCsjDUtNqA== X-Received: by 2002:a17:90a:70c4:b0:2c9:5a71:1500 with SMTP id 98e67ed59e1d1-2d60a747c55mr5165797a91.0.1724339366847; Thu, 22 Aug 2024 08:09:26 -0700 (PDT) Received: from localhost.localdomain ([103.103.35.175]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2d613919fd2sm1991567a91.13.2024.08.22.08.09.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Aug 2024 08:09:26 -0700 (PDT) From: Dorjoy Chowdhury To: qemu-devel@nongnu.org Cc: graf@amazon.com, agraf@csgraf.de, stefanha@redhat.com, pbonzini@redhat.com, slp@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, mst@redhat.com, marcel.apfelbaum@gmail.com, berrange@redhat.com, philmd@linaro.org Subject: [PATCH v5 3/8] crypto: Introduce x509 utils Date: Thu, 22 Aug 2024 21:08:44 +0600 Message-Id: <20240822150849.21759-4-dorjoychy111@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240822150849.21759-1-dorjoychy111@gmail.com> References: <20240822150849.21759-1-dorjoychy111@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102f; envelope-from=dorjoychy111@gmail.com; helo=mail-pj1-x102f.google.com X-Spam_score_int: 15 X-Spam_score: 1.5 X-Spam_bar: + X-Spam_report: (1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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 An utility function for getting fingerprint from X.509 certificate has been introduced. Implementation only provided using gnutls. Signed-off-by: Dorjoy Chowdhury --- crypto/meson.build | 4 ++ crypto/x509-utils.c | 75 +++++++++++++++++++++++++++++++++++++ include/crypto/x509-utils.h | 22 +++++++++++ 3 files changed, 101 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..593eb8968b --- /dev/null +++ b/crypto/x509-utils.c @@ -0,0 +1,75 @@ +/* + * 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; + 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; + } + + ret = gnutls_hash_get_len(qcrypto_to_gnutls_hash_alg_map[alg]); + if (*resultlen < ret) { + error_setg(errp, + "Result buffer size %zu is smaller than hash %d", + *resultlen, ret); + 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; + } + + return 0; + + cleanup: + gnutls_x509_crt_deinit(crt); + return -1; +} 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