pkcs7-sign.cpp

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1	/* $Id: pkcs7-sign.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* IPRT - Crypto - PKCS \#7, Signing
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#include "internal/iprt.h"
42	#include <iprt/crypto/pkcs7.h>
43
44	#include <iprt/err.h>
45	#include <iprt/string.h>
46	#include <iprt/crypto/digest.h>
47	#include <iprt/crypto/key.h>
48	#include <iprt/crypto/pkix.h>
49	#include <iprt/crypto/store.h>
50	#include <iprt/crypto/x509.h>
51
52	#ifdef IPRT_WITH_OPENSSL
53	# include "internal/iprt-openssl.h"
54	# include "internal/openssl-pre.h"
55	# include <openssl/asn1t.h>
56	# include <openssl/pkcs7.h>
57	# include <openssl/cms.h>
58	# include <openssl/x509.h>
59	# include <openssl/err.h>
60	# include "internal/openssl-post.h"
61	#endif
62
63
64	/*********************************************************************************************************************************
65	* Structures and Typedefs *
66	*********************************************************************************************************************************/
67	/**
68	* PKCS\#7 / CMS signing operation instance.
69	*/
70	typedef struct RTCRPKCS7SIGNINGJOBINT
71	{
72	/** Magic value (RTCRPKCS7SIGNINGJOBINT). */
73	uint32_t u32Magic;
74	/** Reference counter. */
75	uint32_t volatile cRefs;
76	/** RTCRPKCS7SIGN_F_XXX. */
77	uint64_t fFlags;
78	/** Set if finalized. */
79	bool fFinallized;
80
81	//....
82	} RTCRPKCS7SIGNINGJOBINT;
83
84	/** Magic value for RTCRPKCS7SIGNINGJOBINT (Jonathan Lethem). */
85	#define RTCRPKCS7SIGNINGJOBINT_MAGIC UINT32_C(0x19640219)
86
87	/** Handle to PKCS\#7/CMS signing operation. */
88	typedef struct RTCRPKCS7SIGNINGJOBINT *RTCRPKCS7SIGNINGJOB;
89	/** Pointer to a PKCS\#7/CMS signing operation handle. */
90	typedef RTCRPKCS7SIGNINGJOB *PRTCRPKCS7SIGNINGJOB;
91
92	//// CMS_sign
93	//RTDECL(int) RTCrPkcs7Sign(PRTCRPKCS7SIGNINGJOB *phJob, uint64_t fFlags, PCRTCRX509CERTIFICATE pSigner, RTCRKEY hPrivateKey,
94	// RTCRSTORE hAdditionalCerts,
95	//
96
97	#ifdef IPRT_WITH_OPENSSL
98
99	static int rtCrPkcs7SimpleSignSignedDataDoV1TweakContent(PKCS7 pOsslPkcs7, const char pszContentId,
100	const void *pvData, size_t cbData,
101	PRTERRINFO pErrInfo)
102	{
103	AssertReturn(pszContentId, RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_CONTENT_TYPE_ATTRIB,
104	"RTCRPKCS7SIGN_SD_F_NO_DATA_ENCAP requires content type in additional attribs"));
105
106	/*
107	* Create a new inner PKCS#7 content container, forcing it to the 'other' type.
108	*/
109	PKCS7 *pOsslInnerContent = PKCS7_new();
110	if (!pOsslInnerContent)
111	return RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "PKCS7_new failed");
112
113	/* Set the type. */
114	int rc;
115	pOsslInnerContent->type = OBJ_txt2obj(pszContentId, 1);
116	if (pOsslInnerContent->type)
117	{
118	/* Create a dynamic ASN1 type which we set to a sequence. */
119	ASN1_TYPE *pOsslOther = pOsslInnerContent->d.other = ASN1_TYPE_new();
120	if (pOsslOther)
121	{
122	pOsslOther->type = V_ASN1_SEQUENCE;
123
124	/* Create a string and put the data in it. */
125	ASN1_STRING *pOsslStr = pOsslOther->value.sequence = ASN1_STRING_new();
126	if (pOsslStr)
127	{
128	rc = ASN1_STRING_set(pOsslStr, pvData, (int)cbData); /* copies the buffer content */
129	if (rc > 0)
130	{
131	/*
132	* Set the content in the PKCS#7 signed data we're constructing.
133	* This consumes pOsslInnerContent on success.
134	*/
135	rc = PKCS7_set_content(pOsslPkcs7, pOsslInnerContent);
136	if (rc > 0)
137	return VINF_SUCCESS;
138
139	/* failed */
140	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "PKCS7_set_content");
141	}
142	else
143	rc = RTErrInfoSetF(pErrInfo, VERR_NO_MEMORY, "ASN1_STRING_set(,,%#x)", cbData);
144	}
145	else
146	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "ASN1_STRING_new");
147	}
148	else
149	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "ASN1_TYPE_new");
150	}
151	else
152	rc = RTErrInfoSetF(pErrInfo, VERR_NO_MEMORY, "OBJ_txt2obj(%s, 1) failed", pszContentId);
153	PKCS7_free(pOsslInnerContent);
154	return rc;
155	}
156
157
158	static int rtCrPkcs7SimpleSignSignedDataDoV1TweakedFinal(PKCS7 pOsslPkcs7, const char pszContentId,
159	const void *pvData, size_t cbData, PRTERRINFO pErrInfo)
160	{
161	AssertReturn(pszContentId, RTErrInfoSet(pErrInfo, VERR_CR_PKCS7_MISSING_CONTENT_TYPE_ATTRIB,
162	"RTCRPKCS7SIGN_SD_F_NO_DATA_ENCAP requires content type in additional attribs"));
163
164	/*
165	* Prepare a BIO of what should be hashed with all the hashing filters attached.
166	*/
167	BIO *pOsslBio = PKCS7_dataInit(pOsslPkcs7, NULL);
168	if (!pOsslBio)
169	return RTErrInfoSet(pErrInfo, VERR_CR_CIPHER_OSSL_ENCRYPT_FINAL_FAILED, "PKCS7_dataInit failed");
170
171	/*
172	* Now write the data.
173	*
174	* We must skip the outer wrapper here (see RTCrPkcs7VerifySignedData). This
175	* is probably a bit presumptive about what we're working on, so add an extra
176	* flag for this later.
177	*/
178	uint8_t const pbToWrite = (uint8_t const )pvData;
179	size_t cbToWrite = cbData;
180
181	/** @todo add extra flag for this? */
182	RTASN1CURSORPRIMARY SkipCursor;
183	RTAsn1CursorInitPrimary(&SkipCursor, pvData, (uint32_t)cbData,
184	pErrInfo,&g_RTAsn1DefaultAllocator, RTASN1CURSOR_FLAGS_DER, "skip");
185	RTASN1CORE SkipAsn1Core = { 0 };
186	int rc = RTAsn1CursorReadHdr(&SkipCursor.Cursor, &SkipAsn1Core, "skip-core");
187	if (RT_SUCCESS(rc))
188	{
189	pbToWrite += SkipAsn1Core.cbHdr;
190	cbToWrite -= SkipAsn1Core.cbHdr;
191
192	rc = BIO_write(pOsslBio, pbToWrite, (int)cbToWrite);
193	if (rc == (ssize_t)cbToWrite)
194	{
195	BIO_flush(pOsslBio); /** @todo error check this */
196	if (true)
197	{
198	/*
199	* Finalize the job - produce the signer info signatures and stuff.
200	*/
201	rc = PKCS7_dataFinal(pOsslPkcs7, pOsslBio);
202	if (rc > 0)
203	{
204	/*
205	* Now tweak the content so we get the desired content type and
206	* no extra wrappers and stuff.
207	*/
208	rc = rtCrPkcs7SimpleSignSignedDataDoV1TweakContent(pOsslPkcs7, pszContentId, pvData, cbData, pErrInfo);
209	}
210	else
211	rc = RTErrInfoSetF(pErrInfo, VERR_CR_CIPHER_OSSL_ENCRYPT_FINAL_FAILED, "PKCS7_dataFinal failed: %d", rc);
212	}
213	}
214	else
215	rc = RTErrInfoSetF(pErrInfo, VERR_CR_CIPHER_OSSL_ENCRYPT_FINAL_FAILED,
216	"%zu byte data write failed: %d", cbToWrite, rc);
217	}
218	BIO_free_all(pOsslBio);
219	return rc;
220	}
221
222
223	static int rtCrPkcs7SimpleSignSignedDataDoV1AttribConversion(PKCS7_SIGNER_INFO *pSignerInfo,
224	PCRTCRPKCS7ATTRIBUTES pAdditionalAuthenticatedAttribs,
225	const char **ppszContentId, PRTERRINFO pErrInfo)
226	{
227	int rc = VINF_SUCCESS;
228	*ppszContentId = NULL;
229
230	if (pAdditionalAuthenticatedAttribs)
231	{
232
233	/*
234	* Convert each attribute.
235	*/
236	STACK_OF(X509_ATTRIBUTE) *pOsslAttributes = sk_X509_ATTRIBUTE_new_null();
237	for (uint32_t i = 0; i < pAdditionalAuthenticatedAttribs->cItems && RT_SUCCESS(rc); i++)
238	{
239	PCRTCRPKCS7ATTRIBUTE pAttrib = pAdditionalAuthenticatedAttribs->papItems[i];
240
241	/* Look out for content type, as we will probably need that for
242	RTCRPKCS7SIGN_SD_F_NO_DATA_ENCAP later. */
243	if ( pAttrib->enmType == RTCRPKCS7ATTRIBUTETYPE_OBJ_IDS
244	&& RTAsn1ObjId_CompareWithString(&pAttrib->Type, RTCR_PKCS9_ID_CONTENT_TYPE_OID) == 0)
245	{
246	AssertBreakStmt(!*ppszContentId, rc = VERR_CR_PKCS7_BAD_CONTENT_TYPE_ATTRIB);
247	AssertBreakStmt(pAttrib->uValues.pObjIds && pAttrib->uValues.pObjIds->cItems == 1,
248	rc = VERR_CR_PKCS7_BAD_CONTENT_TYPE_ATTRIB);
249	*ppszContentId = pAttrib->uValues.pObjIds->papItems[0]->szObjId;
250	}
251
252	/* The conversion (IPRT encode, OpenSSL decode). */
253	X509_ATTRIBUTE *pOsslAttrib;
254	rc = rtCrOpenSslConvertPkcs7Attribute((void **)&pOsslAttrib, pAttrib, pErrInfo);
255	if (RT_SUCCESS(rc))
256	{
257	if (!sk_X509_ATTRIBUTE_push(pOsslAttributes, pOsslAttrib))
258	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "sk_X509_ATTRIBUTE_push failed");
259	}
260	}
261
262	/*
263	* If we've successfully converted all the attributes, make a deep copy
264	* (waste of resource, but whatever) into the signer info we're working on.
265	*/
266	if (RT_SUCCESS(rc))
267	{
268	rc = PKCS7_set_signed_attributes(pSignerInfo, pOsslAttributes); /* deep copy */
269	if (rc <= 0)
270	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "PKCS7_set_signed_attributes failed");
271	}
272
273	/*
274	* Free the attributes (they were copied). Cannot use X509_ATTRIBUTE_pop_free as
275	* the callback causes Visual C++ to complain about exceptions on the callback.
276	*/
277	for (int i = sk_X509_ATTRIBUTE_num(pOsslAttributes) - 1; i >= 0; i--)
278	X509_ATTRIBUTE_free(sk_X509_ATTRIBUTE_value(pOsslAttributes, i));
279	sk_X509_ATTRIBUTE_free(pOsslAttributes);
280	}
281	return rc;
282	}
283
284	static int rtCrPkcs7SimpleSignSignedDataDoV1(uint32_t fFlags, X509 pOsslSigner, EVP_PKEY pEvpPrivateKey,
285	BIO pOsslData, const EVP_MD pEvpMd, STACK_OF(X509) *pOsslAdditionalCerts,
286	PCRTCRPKCS7ATTRIBUTES pAdditionalAuthenticatedAttribs,
287	const void *pvData, size_t cbData,
288	BIO **ppOsslResult, PRTERRINFO pErrInfo)
289	{
290	/*
291	* Use PKCS7_sign with PKCS7_PARTIAL to start a extended the signing process.
292	*/
293	/* Create a ContentInfo we can modify using CMS_sign w/ CMS_PARTIAL. */
294	unsigned int fOsslSign = PKCS7_BINARY \| PKCS7_PARTIAL;
295	if (fFlags & RTCRPKCS7SIGN_SD_F_DEATCHED)
296	fOsslSign \|= PKCS7_DETACHED;
297	if (fFlags & RTCRPKCS7SIGN_SD_F_NO_SMIME_CAP)
298	fOsslSign \|= PKCS7_NOSMIMECAP;
299	int rc = VINF_SUCCESS;
300	PKCS7 *pCms = PKCS7_sign(NULL, NULL, pOsslAdditionalCerts, NULL, fOsslSign);
301	if (pCms != NULL)
302	{
303	/*
304	* Add a signer.
305	*/
306	PKCS7_SIGNER_INFO *pSignerInfo = PKCS7_sign_add_signer(pCms, pOsslSigner, pEvpPrivateKey, pEvpMd, fOsslSign);
307	if (pSignerInfo)
308	{
309	/*
310	* Add additional attributes to the signer.
311	*/
312	const char *pszContentId = NULL;
313	rc = rtCrPkcs7SimpleSignSignedDataDoV1AttribConversion(pSignerInfo, pAdditionalAuthenticatedAttribs,
314	&pszContentId, pErrInfo);
315	if (RT_SUCCESS(rc))
316	{
317	/*
318	* Finalized and actually sign the data.
319	*/
320	bool const fTweaked = (fFlags & (RTCRPKCS7SIGN_SD_F_DEATCHED \| RTCRPKCS7SIGN_SD_F_NO_DATA_ENCAP))
321	== RTCRPKCS7SIGN_SD_F_NO_DATA_ENCAP;
322	if (fTweaked)
323	rc = rtCrPkcs7SimpleSignSignedDataDoV1TweakedFinal(pCms, pszContentId, pvData, cbData, pErrInfo);
324	else
325	{
326	rc = PKCS7_final(pCms, pOsslData, fOsslSign);
327	if (rc > 0)
328	rc = VINF_SUCCESS;
329	else
330	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "PKCS7_final");
331	/** @todo maybe we want to use rtCrPkcs7SimpleSignSignedDataDoV1TweakContent
332	* for when the content type isn't 'data'... */
333	}
334	if (RT_SUCCESS(rc))
335	{
336	/*
337	* Get the output and copy it into the result buffer.
338	*/
339	BIO *pOsslResult = BIO_new(BIO_s_mem());
340	if (pOsslResult)
341	{
342	rc = i2d_PKCS7_bio(pOsslResult, pCms);
343	if (rc > 0)
344	{
345	*ppOsslResult = pOsslResult;
346	rc = VINF_SUCCESS;
347	}
348	else
349	{
350	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "i2d_PKCS7_bio");
351	BIO_free(pOsslResult);
352	}
353	}
354	else
355	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "BIO_new/BIO_s_mem");
356	}
357	}
358	else
359	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "PKCS7_sign_add_signer");
360	}
361	PKCS7_free(pCms);
362	}
363	else
364	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "PKCS7_sign");
365	return rc;
366	}
367
368
369	static int rtCrPkcs7SimpleSignSignedDataDoDefault(uint32_t fFlags, X509 pOsslSigner, EVP_PKEY pEvpPrivateKey,
370	BIO pOsslData, const EVP_MD pEvpMd, STACK_OF(X509) *pOsslAdditionalCerts,
371	PCRTCRPKCS7ATTRIBUTES pAdditionalAuthenticatedAttribs,
372	BIO **ppOsslResult, PRTERRINFO pErrInfo)
373
374	{
375	/*
376	* Use CMS_sign with CMS_PARTIAL to start a extended the signing process.
377	*/
378	/* Create a ContentInfo we can modify using CMS_sign w/ CMS_PARTIAL. */
379	unsigned int fOsslSign = CMS_BINARY \| CMS_PARTIAL;
380	if (fFlags & RTCRPKCS7SIGN_SD_F_DEATCHED)
381	fOsslSign \|= CMS_DETACHED;
382	if (fFlags & RTCRPKCS7SIGN_SD_F_NO_SMIME_CAP)
383	fOsslSign \|= CMS_NOSMIMECAP;
384	int rc = VINF_SUCCESS;
385	CMS_ContentInfo *pCms = CMS_sign(NULL, NULL, pOsslAdditionalCerts, NULL, fOsslSign);
386	if (pCms != NULL)
387	{
388	/*
389	* Set encapsulated content type if present in the auth attribs.
390	*/
391	uint32_t iAuthAttrSkip = UINT32_MAX;
392	for (uint32_t i = 0; i < pAdditionalAuthenticatedAttribs->cItems && RT_SUCCESS(rc); i++)
393	{
394	PCRTCRPKCS7ATTRIBUTE pAttrib = pAdditionalAuthenticatedAttribs->papItems[i];
395	if ( pAttrib->enmType == RTCRPKCS7ATTRIBUTETYPE_OBJ_IDS
396	&& RTAsn1ObjId_CompareWithString(&pAttrib->Type, RTCR_PKCS9_ID_CONTENT_TYPE_OID) == 0)
397	{
398	AssertBreakStmt(pAttrib->uValues.pObjIds && pAttrib->uValues.pObjIds->cItems == 1,
399	rc = VERR_INTERNAL_ERROR_3);
400	PCRTASN1OBJID pObjId = pAttrib->uValues.pObjIds->papItems[0];
401	ASN1_OBJECT pOsslObjId = OBJ_txt2obj(pObjId->szObjId, 0 /no_name*/);
402	if (pOsslObjId)
403	{
404	rc = CMS_set1_eContentType(pCms, pOsslObjId);
405	ASN1_OBJECT_free(pOsslObjId);
406	if (rc < 0)
407	rc = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_GENERIC_ERROR,
408	"CMS_set1_eContentType(%s)", pObjId->szObjId);
409	}
410	else
411	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "OBJ_txt2obj");
412
413	iAuthAttrSkip = i;
414	break;
415	}
416	}
417	if (RT_SUCCESS(rc))
418	{
419	/*
420	* Add a signer.
421	*/
422	CMS_SignerInfo *pSignerInfo = CMS_add1_signer(pCms, pOsslSigner, pEvpPrivateKey, pEvpMd, fOsslSign);
423	if (pSignerInfo)
424	{
425	/*
426	* Add additional attributes, skipping the content type if found above.
427	*/
428	if (pAdditionalAuthenticatedAttribs)
429	for (uint32_t i = 0; i < pAdditionalAuthenticatedAttribs->cItems && RT_SUCCESS(rc); i++)
430	if (i != iAuthAttrSkip)
431	{
432	PCRTCRPKCS7ATTRIBUTE pAttrib = pAdditionalAuthenticatedAttribs->papItems[i];
433	X509_ATTRIBUTE *pOsslAttrib;
434	rc = rtCrOpenSslConvertPkcs7Attribute((void **)&pOsslAttrib, pAttrib, pErrInfo);
435	if (RT_SUCCESS(rc))
436	{
437	rc = CMS_signed_add1_attr(pSignerInfo, pOsslAttrib);
438	rtCrOpenSslFreeConvertedPkcs7Attribute((void **)pOsslAttrib);
439	if (rc <= 0)
440	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "CMS_signed_add1_attr");
441	}
442	}
443	if (RT_SUCCESS(rc))
444	{
445	/*
446	* Finalized and actually sign the data.
447	*/
448	rc = CMS_final(pCms, pOsslData, NULL /dcont/, fOsslSign);
449	if (rc > 0)
450	{
451	/*
452	* Get the output and copy it into the result buffer.
453	*/
454	BIO *pOsslResult = BIO_new(BIO_s_mem());
455	if (pOsslResult)
456	{
457	rc = i2d_CMS_bio(pOsslResult, pCms);
458	if (rc > 0)
459	{
460	*ppOsslResult = pOsslResult;
461	rc = VINF_SUCCESS;
462	}
463	else
464	{
465	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "i2d_CMS_bio");
466	BIO_free(pOsslResult);
467	}
468	}
469	else
470	rc = RTErrInfoSet(pErrInfo, VERR_NO_MEMORY, "BIO_new/BIO_s_mem");
471	}
472	else
473	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "CMS_final");
474	}
475	}
476	else
477	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "CMS_add1_signer");
478	}
479	CMS_ContentInfo_free(pCms);
480	}
481	else
482	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "CMS_sign");
483	return rc;
484	}
485
486	#endif /* IPRT_WITH_OPENSSL */
487
488
489
490	RTDECL(int) RTCrPkcs7SimpleSignSignedData(uint32_t fFlags, PCRTCRX509CERTIFICATE pSigner, RTCRKEY hPrivateKey,
491	void const *pvData, size_t cbData, RTDIGESTTYPE enmDigestType,
492	RTCRSTORE hAdditionalCerts, PCRTCRPKCS7ATTRIBUTES pAdditionalAuthenticatedAttribs,
493	void pvResult, size_t pcbResult, PRTERRINFO pErrInfo)
494	{
495	size_t const cbResultBuf = *pcbResult;
496	*pcbResult = 0;
497	AssertReturn(!(fFlags & ~RTCRPKCS7SIGN_SD_F_VALID_MASK), VERR_INVALID_FLAGS);
498	#ifdef IPRT_WITH_OPENSSL
499	AssertReturn((int)cbData >= 0 && (unsigned)cbData == cbData, VERR_TOO_MUCH_DATA);
500
501	/*
502	* Resolve the digest type.
503	*/
504	const EVP_MD *pEvpMd = NULL;
505	if (enmDigestType != RTDIGESTTYPE_UNKNOWN)
506	{
507	pEvpMd = (const EVP_MD *)rtCrOpenSslConvertDigestType(enmDigestType, pErrInfo);
508	AssertReturn(pEvpMd, pErrInfo ? pErrInfo->rc : VERR_INVALID_PARAMETER);
509	}
510
511	/*
512	* Convert the private key.
513	*/
514	EVP_PKEY *pEvpPrivateKey = NULL;
515	int rc = rtCrKeyToOpenSslKey(hPrivateKey, false /fNeedPublic/, (void **)&pEvpPrivateKey, pErrInfo);
516	if (RT_SUCCESS(rc))
517	{
518	/*
519	* Convert the signing certificate.
520	*/
521	X509 *pOsslSigner = NULL;
522	rc = rtCrOpenSslConvertX509Cert((void **)&pOsslSigner, pSigner, pErrInfo);
523	if (RT_SUCCESS(rc))
524	{
525	/*
526	* Convert any additional certificates.
527	*/
528	STACK_OF(X509) *pOsslAdditionalCerts = NULL;
529	if (hAdditionalCerts != NIL_RTCRSTORE)
530	rc = RTCrStoreConvertToOpenSslCertStack(hAdditionalCerts, 0 /fFlags/, (void **)&pOsslAdditionalCerts, pErrInfo);
531	if (RT_SUCCESS(rc))
532	{
533	/*
534	* Create a BIO for the data buffer.
535	*/
536	BIO pOsslData = BIO_new_mem_buf((void )pvData, (int)cbData);
537	if (pOsslData)
538	{
539	/*
540	* Do the work.
541	*/
542	BIO *pOsslResult = NULL;
543	if (!(fFlags & RTCRPKCS7SIGN_SD_F_USE_V1))
544	rc = rtCrPkcs7SimpleSignSignedDataDoDefault(fFlags, pOsslSigner, pEvpPrivateKey, pOsslData, pEvpMd,
545	pOsslAdditionalCerts, pAdditionalAuthenticatedAttribs,
546	&pOsslResult, pErrInfo);
547	else
548	rc = rtCrPkcs7SimpleSignSignedDataDoV1(fFlags, pOsslSigner, pEvpPrivateKey, pOsslData, pEvpMd,
549	pOsslAdditionalCerts, pAdditionalAuthenticatedAttribs,
550	pvData, cbData,
551	&pOsslResult, pErrInfo);
552	BIO_free(pOsslData);
553	if (RT_SUCCESS(rc))
554	{
555	/*
556	* Copy out the result.
557	*/
558	BUF_MEM *pBuf = NULL;
559	rc = (int)BIO_get_mem_ptr(pOsslResult, &pBuf);
560	if (rc > 0)
561	{
562	AssertPtr(pBuf);
563	size_t const cbResult = pBuf->length;
564	if ( cbResultBuf >= cbResult
565	&& pvResult != NULL)
566	{
567	memcpy(pvResult, pBuf->data, cbResult);
568	rc = VINF_SUCCESS;
569	}
570	else
571	rc = VERR_BUFFER_OVERFLOW;
572	*pcbResult = cbResult;
573	}
574	else
575	rc = RTErrInfoSet(pErrInfo, VERR_GENERAL_FAILURE, "BIO_get_mem_ptr");
576	BIO_free(pOsslResult);
577	}
578	}
579	}
580	rtCrOpenSslFreeConvertedX509Cert(pOsslSigner);
581	}
582	EVP_PKEY_free(pEvpPrivateKey);
583	}
584	return rc;
585	#else
586	RT_NOREF(fFlags, pSigner, hPrivateKey, pvData, cbData, enmDigestType, hAdditionalCerts, pAdditionalAuthenticatedAttribs,
587	pvResult, pErrInfo, cbResultBuf);
588	*pcbResult = 0;
589	return VERR_NOT_IMPLEMENTED;
590	#endif
591	}
592

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source: vbox/trunk/src/VBox/Runtime/common/crypto/pkcs7-sign.cpp

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