From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lamorak.hansenpartnership.com (lamorak.hansenpartnership.com [198.37.111.173]) (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 2A3C735C1BF for ; Thu, 19 Mar 2026 19:13:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.37.111.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773947593; cv=none; b=cB0rwTpY9A7sYzu3oqn+BkNELA2ptuyyE3wDOivORGyjfl6jYLfw20sSQsFgvnMDQlr0Ws9+192XX07fV+NdMX6PkW9yBVgP+f1RPCGlRUwlMu8UmVUQkAhYKzRHBjz6VYGYvvCOnv5zXjgxZB8VFriunpDGSnjBT/Kz3S6ZYSc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773947593; c=relaxed/simple; bh=ao/Nb0xWw8qp5XTzYlgOXNIQcjs9ei7dKDHmRQ3A7Eo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=I1g4oJNAgC1n5MNIDST7/KoogXxQZ6yfQPOFRxM7QzuECTeOlMBBTMiUyv7k25GT35bvnWOwAcFrICg2t4hYAfnfxJY9pcFvAWFrkmhPa2oIXGBRvGQncJ9P4PiZ0dtSsQuyVZ2MDua+d5AOMK30d7MAaVm3nH0fj6zMZbskVpM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com; spf=pass smtp.mailfrom=HansenPartnership.com; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b=jugC8VfN; arc=none smtp.client-ip=198.37.111.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=HansenPartnership.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=hansenpartnership.com header.i=@hansenpartnership.com header.b="jugC8VfN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=hansenpartnership.com; s=20151216; t=1773947591; bh=ao/Nb0xWw8qp5XTzYlgOXNIQcjs9ei7dKDHmRQ3A7Eo=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References:From; b=jugC8VfN1H8DiJRFRea3PCzLPq9KQ/xzNTBgFv5RwOjCRcLjS/uER2xwHnmLp9r9a +iPHTi9D4MJ+ThrY/fTJy/TwPXTOCVcNvLHIVvpRqZJQAXBqd28e0y0JHfvdBkLJIp 24xjjgM6vqk84uZvBcB6y8F7IskYptF5LfmjCxIg= Received: from lingrow.int.hansenpartnership.com (unknown [153.66.160.227]) by lamorak.hansenpartnership.com (Postfix) with ESMTP id 266911C02E8; Thu, 19 Mar 2026 15:13:11 -0400 (EDT) From: James Bottomley To: linux-crypto@vger.kernel.org Cc: David Howells , Blaise Boscaccy Subject: [PATCH v4 1/3] crypto: pkcs7: add flag for validated trust on a signed info block Date: Thu, 19 Mar 2026 15:12:06 -0400 Message-ID: <20260319191208.831-2-James.Bottomley@HansenPartnership.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260319191208.831-1-James.Bottomley@HansenPartnership.com> References: <20260319191208.831-1-James.Bottomley@HansenPartnership.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 --- 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 e0761436ec7f..9bda49295bd0 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 6ef9f335bb17..203062a33def 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 9a87c34ed173..78ebfb6373b6 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; } -- 2.51.0