From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 322562701C8; Mon, 28 Jul 2025 13:54:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753710859; cv=none; b=GtFRlqxJKLiwjvkw3Y6+oh8ogNfJ78UOApGBkZj0N7TaWLJkZpTOXmMnrXJelzP6z76WJl/aM5csoxNJtPPoWg1bKty/I4U5kFcC3UGXK/ceJkgaQE7kIn134LayhLdK8A0FYYmknW3+0RS20uJRW29lTAuJsilwOjesDYmRUUs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753710859; c=relaxed/simple; bh=tQeo2gHr3WzOtcNTI9kRaE714QohDLHrOKasMXl+XLA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ukvIclqya2fmHuTC+FBIBacBSOvH/v+FmU1j8s8jl4L5Yr32H3a/8Et1eHTR1o99orSYCOmj+eWmGznSaYgXtvZX5Jf3W2VVDdGItbEqDX3pLcBqyUfzLa5zb2mwOdHMtwRY+XHYx3F6M6cosP1aj4z99vtUQmR3jfH/wtteIyw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CS8wbfHd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CS8wbfHd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D468CC116B1; Mon, 28 Jul 2025 13:54:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753710859; bh=tQeo2gHr3WzOtcNTI9kRaE714QohDLHrOKasMXl+XLA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CS8wbfHd63SixPN09zu+HTRf9TJeLndhmm0Osw+BHGeC7d7LAe+lC5vA7Pzj3eq9O 2Ck9Wmd9FjBZvVRR+b/byx1tqKJxQbDc4p0oiO853/EI4Rf52TQEI8Ad0y1T9FOyII b8sSs4ukqHtc5X2P9SMOM5l94X72UtLnvE5J0aNUc3OW3Mjt1S2y1Crhxgm3ip+PLc eQoiFu5lsv0ZCYgWnz3r1RsC3jjIrNoIMuJswt83o1ReiNCuBhqRZrNyLiH1/Rep3U I/mDd7X5zqwZROVTitGUNQW6akS9ixrbkZC+lpnR6vpu/hU+g1viZn/e8prPbJN8zx 5JS/inHOtTaeA== From: "Aneesh Kumar K.V (Arm)" To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, aik@amd.com, lukas@wunner.de, Samuel Ortiz , Xu Yilun , Jason Gunthorpe , Suzuki K Poulose , Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , Oliver Upton , Wilfred Mallawa , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Jonathan Cameron , Dan Williams Subject: [RFC PATCH v1 17/38] X.509: Parse Subject Alternative Name in certificates Date: Mon, 28 Jul 2025 19:21:54 +0530 Message-ID: <20250728135216.48084-18-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250728135216.48084-1-aneesh.kumar@kernel.org> References: <20250728135216.48084-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Lukas Wunner The upcoming support for PCI device authentication with CMA-SPDM (PCIe r6.1 sec 6.31) requires validating the Subject Alternative Name in X.509 certificates. Store a pointer to the Subject Alternative Name upon parsing for consumption by CMA-SPDM. Signed-off-by: Lukas Wunner Reviewed-by: Wilfred Mallawa Reviewed-by: Ilpo Järvinen Reviewed-by: Jonathan Cameron Acked-by: Dan Williams --- crypto/asymmetric_keys/x509_cert_parser.c | 9 +++++++++ include/keys/x509-parser.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 2ffe4ae90bea..ac8a01c2b9fc 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -571,6 +571,15 @@ int x509_process_extension(void *context, size_t hdrlen, return 0; } + if (ctx->last_oid == OID_subjectAltName) { + if (ctx->cert->raw_san) + return -EBADMSG; + + ctx->cert->raw_san = v; + ctx->cert->raw_san_size = vlen; + return 0; + } + if (ctx->last_oid == OID_keyUsage) { /* * Get hold of the keyUsage bit string diff --git a/include/keys/x509-parser.h b/include/keys/x509-parser.h index 37436a5c7526..8e450befe3b9 100644 --- a/include/keys/x509-parser.h +++ b/include/keys/x509-parser.h @@ -36,6 +36,8 @@ struct x509_certificate { unsigned raw_subject_size; unsigned raw_skid_size; const void *raw_skid; /* Raw subjectKeyId in ASN.1 */ + const void *raw_san; /* Raw subjectAltName in ASN.1 */ + unsigned raw_san_size; unsigned index; bool seen; /* Infinite recursion prevention */ bool verified; -- 2.43.0