pkcs7-sanity.cpp@ 57004

Last change on this file since 57004 was 57004, checked in by vboxsync, 9 years ago
iprt,*: Marked all format strings in the C part of IPRT and fixed the fallout.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 11.0 KB

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1	/* $Id: pkcs7-sanity.cpp 57004 2015-07-19 00:53:13Z vboxsync $ */
2	/** @file
3	* IPRT - Crypto - PKCS \#7, Sanity Checkers.
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*******************************************************************************
29	* Header Files *
30	*******************************************************************************/
31	#include "internal/iprt.h"
32	#include <iprt/crypto/pkcs7.h>
33
34	#include <iprt/err.h>
35	#include <iprt/string.h>
36
37	//#include <iprt/stream.h>
38
39	#include "pkcs7-internal.h"
40
41
42	static int rtCrPkcs7SignedData_CheckSanityExtra(PCRTCRPKCS7SIGNEDDATA pSignedData, uint32_t fFlags,
43	PRTERRINFO pErrInfo, const char *pszErrorTag)
44	{
45	bool const fAuthenticode = RT_BOOL(fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_AUTHENTICODE);
46
47	//RTAsn1Dump(&pSignedData->SeqCore.Asn1Core, 0, 0, RTAsn1DumpStrmPrintfV, g_pStdOut);
48
49	if ( RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V1) != 0
50	&& RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V3) != 0
51	&& RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V4) != 0
52	&& RTAsn1Integer_UnsignedCompareWithU32(&pSignedData->Version, RTCRPKCS7SIGNEDDATA_V5) != 0)
53	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNED_DATA_VERSION, "SignedData version is %llu, expected %u",
54	pSignedData->Version.uValue.u, RTCRPKCS7SIGNEDDATA_V1);
55
56	/*
57	* DigestAlgorithms.
58	*/
59	if (pSignedData->DigestAlgorithms.cItems == 0) /** @todo this might be too strict */
60	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_SIGNED_DATA_NO_DIGEST_ALGOS, "SignedData.DigestAlgorithms is empty");
61	if (pSignedData->DigestAlgorithms.cItems != 1 && fAuthenticode)
62	return RTErrInfoSetF(pErrInfo, VERR_CR_SPC_NOT_EXACTLY_ONE_DIGEST_ALGO,
63	"SignedData.DigestAlgorithms has more than one algorithm (%u)",
64	pSignedData->DigestAlgorithms.cItems);
65
66	if (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_ONLY_KNOWN_HASH)
67	for (uint32_t i = 0; i < pSignedData->DigestAlgorithms.cItems; i++)
68	{
69	if (RTCrX509AlgorithmIdentifier_QueryDigestType(&pSignedData->DigestAlgorithms.paItems[i]) == RTDIGESTTYPE_INVALID)
70	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_UNKNOWN_DIGEST_ALGORITHM,
71	"SignedData.DigestAlgorithms[%i] is not known: %s",
72	i, pSignedData->DigestAlgorithms.paItems[i].Algorithm.szObjId);
73	if (pSignedData->DigestAlgorithms.paItems[i].Parameters.enmType != RTASN1TYPE_NULL)
74	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_DIGEST_PARAMS_NOT_IMPL,
75	"SignedData.DigestAlgorithms[%i] has parameters: tag=%u",
76	i, pSignedData->DigestAlgorithms.paItems[i].Parameters.u.Core.uTag);
77	}
78
79	/*
80	* Certificates.
81	*/
82	if ( (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_SIGNING_CERT_PRESENT)
83	&& pSignedData->Certificates.cItems == 0)
84	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_NO_CERTIFICATES,
85	"SignedData.Certifcates is empty, expected at least one certificate");
86
87	/*
88	* Crls.
89	*/
90	if (fAuthenticode && RTAsn1Core_IsPresent(&pSignedData->Crls))
91	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_EXPECTED_NO_CRLS,
92	"SignedData.Crls is not empty as expected for authenticode.");
93	/** @todo check Crls when they become important. */
94
95	/*
96	* SignerInfos.
97	*/
98	if (pSignedData->SignerInfos.cItems == 0)
99	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_NO_SIGNER_INFOS, "SignedData.SignerInfos is empty?");
100	if (fAuthenticode && pSignedData->SignerInfos.cItems != 1)
101	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_EXPECTED_ONE_SIGNER_INFO,
102	"SignedData.SignerInfos should have one entry for authenticode: %u",
103	pSignedData->SignerInfos.cItems);
104
105	for (uint32_t i = 0; i < pSignedData->SignerInfos.cItems; i++)
106	{
107	PCRTCRPKCS7SIGNERINFO pSignerInfo = &pSignedData->SignerInfos.paItems[i];
108
109	if (RTAsn1Integer_UnsignedCompareWithU32(&pSignerInfo->Version, RTCRPKCS7SIGNERINFO_V1) != 0)
110	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_INFO_VERSION,
111	"SignedData.SignerInfos[%u] version is %llu, expected %u",
112	i, pSignerInfo->Version.uValue.u, RTCRPKCS7SIGNERINFO_V1);
113
114	/* IssuerAndSerialNumber. */
115	int rc = RTCrX509Name_CheckSanity(&pSignerInfo->IssuerAndSerialNumber.Name, 0, pErrInfo,
116	"SignedData.SignerInfos[#].IssuerAndSerialNumber.Name");
117	if (RT_FAILURE(rc))
118	return rc;
119
120	if (pSignerInfo->IssuerAndSerialNumber.SerialNumber.Asn1Core.cb == 0)
121	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_INFO_NO_ISSUER_SERIAL_NO,
122	"SignedData.SignerInfos[%u].IssuerAndSerialNumber.SerialNumber is missing (zero length)", i);
123
124	PCRTCRX509CERTIFICATE pCert;
125	pCert = RTCrPkcs7SetOfCerts_FindX509ByIssuerAndSerialNumber(&pSignedData->Certificates,
126	&pSignerInfo->IssuerAndSerialNumber.Name,
127	&pSignerInfo->IssuerAndSerialNumber.SerialNumber);
128	if (!pCert && (fFlags & RTCRPKCS7SIGNEDDATA_SANITY_F_SIGNING_CERT_PRESENT))
129	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_CERT_NOT_SHIPPED,
130	"SignedData.SignerInfos[%u].IssuerAndSerialNumber not found in T0.Certificates", i);
131
132	/* DigestAlgorithm */
133	uint32_t j = 0;
134	while ( j < pSignedData->DigestAlgorithms.cItems
135	&& RTCrX509AlgorithmIdentifier_Compare(&pSignedData->DigestAlgorithms.paItems[j],
136	&pSignerInfo->DigestAlgorithm) != 0)
137	j++;
138	if (j >= pSignedData->DigestAlgorithms.cItems)
139	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_DIGEST_ALGO_NOT_FOUND_IN_LIST,
140	"SignedData.SignerInfos[%u].DigestAlgorithm (%s) not found in SignedData.DigestAlgorithms",
141	i, pSignerInfo->DigestAlgorithm.Algorithm.szObjId);
142
143	/* Digest encryption algorithm. */
144	#if 0 /** @todo Unimportant: Seen timestamp signatures specifying pkcs1-Sha256WithRsaEncryption in SignerInfo and just RSA in the certificate. Figure out how to compare the two. */
145	if ( pCert
146	&& RTCrX509AlgorithmIdentifier_Compare(&pSignerInfo->DigestEncryptionAlgorithm,
147	&pCert->TbsCertificate.SubjectPublicKeyInfo.Algorithm) != 0)
148	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_SIGNER_INFO_DIGEST_ENCRYPT_MISMATCH,
149	"SignedData.SignerInfos[%u].DigestEncryptionAlgorithm (%s) mismatch with certificate (%s)",
150	i, pSignerInfo->DigestEncryptionAlgorithm.Algorithm.szObjId,
151	pCert->TbsCertificate.SubjectPublicKeyInfo.Algorithm.Algorithm.szObjId);
152	#endif
153
154	/* Authenticated attributes we know. */
155	if (RTCrPkcs7Attributes_IsPresent(&pSignerInfo->AuthenticatedAttributes))
156	{
157	bool fFoundContentInfo = false;
158	bool fFoundMessageDigest = false;
159	for (j = 0; j < pSignerInfo->AuthenticatedAttributes.cItems; j++)
160	{
161	PCRTCRPKCS7ATTRIBUTE pAttrib = &pSignerInfo->AuthenticatedAttributes.paItems[j];
162	if (RTAsn1ObjId_CompareWithString(&pAttrib->Type, RTCR_PKCS9_ID_CONTENT_TYPE_OID) == 0)
163	{
164	if (fFoundContentInfo)
165	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_CONTENT_TYPE_ATTRIB,
166	"Multiple authenticated content-type attributes.");
167	fFoundContentInfo = true;
168	AssertReturn(pAttrib->enmType == RTCRPKCS7ATTRIBUTETYPE_OBJ_IDS, VERR_INTERNAL_ERROR_3);
169	if (pAttrib->uValues.pObjIds->cItems != 1)
170	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_BAD_CONTENT_TYPE_ATTRIB,
171	"Expected exactly one value for content-type attrib, found: %u",
172	pAttrib->uValues.pObjIds->cItems);
173	}
174	else if (RTAsn1ObjId_CompareWithString(&pAttrib->Type, RTCR_PKCS9_ID_MESSAGE_DIGEST_OID) == 0)
175	{
176	if (fFoundMessageDigest)
177	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_MESSAGE_DIGEST_ATTRIB,
178	"Multiple authenticated message-digest attributes.");
179	fFoundMessageDigest = true;
180	AssertReturn(pAttrib->enmType == RTCRPKCS7ATTRIBUTETYPE_OCTET_STRINGS, VERR_INTERNAL_ERROR_3);
181	if (pAttrib->uValues.pOctetStrings->cItems != 1)
182	return RTErrInfoSetF(pErrInfo, VERR_CR_PKCS7_BAD_CONTENT_TYPE_ATTRIB,
183	"Expected exactly one value for message-digest attrib, found: %u",
184	pAttrib->uValues.pOctetStrings->cItems);
185	}
186	else
187	AssertReturn(pAttrib->enmType == RTCRPKCS7ATTRIBUTETYPE_UNKNOWN, VERR_INTERNAL_ERROR_3);
188	}
189
190	if (!fFoundContentInfo)
191	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_CONTENT_TYPE_ATTRIB,
192	"Missing authenticated content-type attribute.");
193	if (!fFoundMessageDigest)
194	return RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_MESSAGE_DIGEST_ATTRIB,
195	"Missing authenticated message-digest attribute.");
196	}
197	}
198
199	return VINF_SUCCESS;
200	}
201
202
203	/*
204	* Generate the code.
205	*/
206	#include <iprt/asn1-generator-sanity.h>
207

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source: vbox/trunk/src/VBox/Runtime/common/crypto/pkcs7-sanity.cpp@ 57004

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