From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3BD9F3AF641; Thu, 26 Mar 2026 06:07:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774505228; cv=none; b=t5AOccZyp2N3khQdBuCAqg/AoGw5IvOaMg5JuJGtFU5NZHomJVJtQoY24oif8y6Wxgq1Dv1xUJdVJChlmJYu9J4wIx/xKr1LmCmEK/TdsG95s2hRbgdQSUJXjAYYLWPMrdbouYOc0Pg6+Q5y+Q7dTuRYKSZaVNKmXIEo5yM9Rg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774505228; c=relaxed/simple; bh=fYARcDBmPPcHO7t07Sr6HPEeL+UytBm9Oitq4eLFb94=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UIpBFopV/TPonm18lMhrffl0BAqGTFj1VTCz/jMJTvt6ANp4TqN0mgoYSpgzlbMJu7ACfVksb07phXtPoOMDb9FQ6nvU3gtyzzFjIf4Yj8dLjGsP96yfYVTtFd9aIptfekRb1MzGAvgwnM0g6EH0aBGbvzyTjUyn5qC+pId7tUo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=V+r48oKJ; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="V+r48oKJ" Received: from narnia.corp.microsoft.com (unknown [40.78.13.173]) by linux.microsoft.com (Postfix) with ESMTPSA id A3B4D20B7128; Wed, 25 Mar 2026 23:07:05 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com A3B4D20B7128 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1774505226; bh=TdoGL/WFRJu1LL991oi0llbx4SxP9bDplmkY7d0i3/c=; h=From:To:Subject:Date:In-Reply-To:References:From; b=V+r48oKJ7yl7Tu4zYbo3zDeKYIBvRqCkRggXoHvgsBQU6pBs8EU0C1VVZCWavnq/T N0Ka/73AeFidqXIZgyLmEQzslT/HpomhCGwkrQlkpcH2BJ2/LbEOviJQUnNFc/tdlg dM1qEcqgrrU76/jbgCsYm55EDLLYzr7EDsW0EUX0= From: Blaise Boscaccy To: Blaise Boscaccy , Jonathan Corbet , Paul Moore , James Morris , "Serge E. Hallyn" , =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= , =?UTF-8?q?G=C3=BCnther=20Noack?= , "Dr. David Alan Gilbert" , Andrew Morton , James.Bottomley@HansenPartnership.com, dhowells@redhat.com, Fan Wu , Ryan Foster , Randy Dunlap , linux-security-module@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH v3 1/9] crypto: pkcs7: add flag for validated trust on a signed info block Date: Wed, 25 Mar 2026 23:06:30 -0700 Message-ID: <20260326060655.2550595-2-bboscaccy@linux.microsoft.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260326060655.2550595-1-bboscaccy@linux.microsoft.com> References: <20260326060655.2550595-1-bboscaccy@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: James Bottomley Allow consumers of struct pkcs7_message to tell if any of the sinfo fields has passed a trust validation. Note that this does not happen in parsing, pkcs7_validate_trust() must be explicitly called or called via validate_pkcs7_trust(). Since the way to get this trusted pkcs7 object is via verify_pkcs7_message_sig, export that so modules can use it. Signed-off-by: James Bottomley Signed-off-by: Blaise Boscaccy --- certs/system_keyring.c | 1 + crypto/asymmetric_keys/pkcs7_parser.h | 1 + crypto/asymmetric_keys/pkcs7_trust.c | 1 + 3 files changed, 3 insertions(+) diff --git a/certs/system_keyring.c b/certs/system_keyring.c index e0761436ec7f4..9bda49295bd02 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -380,6 +380,7 @@ int verify_pkcs7_message_sig(const void *data, size_t len, pr_devel("<==%s() = %d\n", __func__, ret); return ret; } +EXPORT_SYMBOL(verify_pkcs7_message_sig); /** * verify_pkcs7_signature - Verify a PKCS#7-based signature on system data. diff --git a/crypto/asymmetric_keys/pkcs7_parser.h b/crypto/asymmetric_keys/pkcs7_parser.h index 6ef9f335bb17f..203062a33def6 100644 --- a/crypto/asymmetric_keys/pkcs7_parser.h +++ b/crypto/asymmetric_keys/pkcs7_parser.h @@ -20,6 +20,7 @@ struct pkcs7_signed_info { unsigned index; bool unsupported_crypto; /* T if not usable due to missing crypto */ bool blacklisted; + bool verified; /* T if this signer has validated trust */ /* Message digest - the digest of the Content Data (or NULL) */ const void *msgdigest; diff --git a/crypto/asymmetric_keys/pkcs7_trust.c b/crypto/asymmetric_keys/pkcs7_trust.c index 9a87c34ed1733..78ebfb6373b61 100644 --- a/crypto/asymmetric_keys/pkcs7_trust.c +++ b/crypto/asymmetric_keys/pkcs7_trust.c @@ -127,6 +127,7 @@ static int pkcs7_validate_trust_one(struct pkcs7_message *pkcs7, for (p = sinfo->signer; p != x509; p = p->signer) p->verified = true; } + sinfo->verified = true; kleave(" = 0"); return 0; } -- 2.53.0