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8931b30d | 1 | /* crypto/cms/cms_sd.c */ |
ae5c8664 MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
8931b30d DSH |
4 | * project. |
5 | */ | |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2008 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
ae5c8664 | 14 | * notice, this list of conditions and the following disclaimer. |
8931b30d DSH |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | */ | |
54 | ||
55 | #include "cryptlib.h" | |
56 | #include <openssl/asn1t.h> | |
57 | #include <openssl/pem.h> | |
8c798690 | 58 | #include <openssl/x509.h> |
8931b30d DSH |
59 | #include <openssl/x509v3.h> |
60 | #include <openssl/err.h> | |
61 | #include <openssl/cms.h> | |
62 | #include "cms_lcl.h" | |
63 | #include "asn1_locl.h" | |
64 | ||
65 | /* CMS SignedData Utilities */ | |
66 | ||
67 | DECLARE_ASN1_ITEM(CMS_SignedData) | |
68 | ||
69 | static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms) | |
ae5c8664 MC |
70 | { |
71 | if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) { | |
72 | CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA); | |
73 | return NULL; | |
74 | } | |
75 | return cms->d.signedData; | |
76 | } | |
8931b30d DSH |
77 | |
78 | static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms) | |
ae5c8664 MC |
79 | { |
80 | if (cms->d.other == NULL) { | |
81 | cms->d.signedData = M_ASN1_new_of(CMS_SignedData); | |
82 | if (!cms->d.signedData) { | |
83 | CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE); | |
84 | return NULL; | |
85 | } | |
86 | cms->d.signedData->version = 1; | |
87 | cms->d.signedData->encapContentInfo->eContentType = | |
88 | OBJ_nid2obj(NID_pkcs7_data); | |
89 | cms->d.signedData->encapContentInfo->partial = 1; | |
90 | ASN1_OBJECT_free(cms->contentType); | |
91 | cms->contentType = OBJ_nid2obj(NID_pkcs7_signed); | |
92 | return cms->d.signedData; | |
93 | } | |
94 | return cms_get0_signed(cms); | |
95 | } | |
8931b30d DSH |
96 | |
97 | /* Just initialize SignedData e.g. for certs only structure */ | |
98 | ||
99 | int CMS_SignedData_init(CMS_ContentInfo *cms) | |
ae5c8664 MC |
100 | { |
101 | if (cms_signed_data_init(cms)) | |
102 | return 1; | |
103 | else | |
104 | return 0; | |
105 | } | |
8931b30d DSH |
106 | |
107 | /* Check structures and fixup version numbers (if necessary) */ | |
108 | ||
109 | static void cms_sd_set_version(CMS_SignedData *sd) | |
ae5c8664 MC |
110 | { |
111 | int i; | |
112 | CMS_CertificateChoices *cch; | |
113 | CMS_RevocationInfoChoice *rch; | |
114 | CMS_SignerInfo *si; | |
115 | ||
116 | for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) { | |
117 | cch = sk_CMS_CertificateChoices_value(sd->certificates, i); | |
118 | if (cch->type == CMS_CERTCHOICE_OTHER) { | |
119 | if (sd->version < 5) | |
120 | sd->version = 5; | |
121 | } else if (cch->type == CMS_CERTCHOICE_V2ACERT) { | |
122 | if (sd->version < 4) | |
123 | sd->version = 4; | |
124 | } else if (cch->type == CMS_CERTCHOICE_V1ACERT) { | |
125 | if (sd->version < 3) | |
126 | sd->version = 3; | |
127 | } | |
128 | } | |
129 | ||
130 | for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) { | |
131 | rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i); | |
132 | if (rch->type == CMS_REVCHOICE_OTHER) { | |
133 | if (sd->version < 5) | |
134 | sd->version = 5; | |
135 | } | |
136 | } | |
137 | ||
138 | if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data) | |
139 | && (sd->version < 3)) | |
140 | sd->version = 3; | |
141 | ||
142 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { | |
143 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
144 | if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { | |
145 | if (si->version < 3) | |
146 | si->version = 3; | |
147 | if (sd->version < 3) | |
148 | sd->version = 3; | |
149 | } else if (si->version < 1) | |
150 | si->version = 1; | |
151 | } | |
152 | ||
153 | if (sd->version < 1) | |
154 | sd->version = 1; | |
155 | ||
156 | } | |
157 | ||
8931b30d DSH |
158 | /* Copy an existing messageDigest value */ |
159 | ||
160 | static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si) | |
ae5c8664 MC |
161 | { |
162 | STACK_OF(CMS_SignerInfo) *sinfos; | |
163 | CMS_SignerInfo *sitmp; | |
164 | int i; | |
165 | sinfos = CMS_get0_SignerInfos(cms); | |
166 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
167 | ASN1_OCTET_STRING *messageDigest; | |
168 | sitmp = sk_CMS_SignerInfo_value(sinfos, i); | |
169 | if (sitmp == si) | |
170 | continue; | |
171 | if (CMS_signed_get_attr_count(sitmp) < 0) | |
172 | continue; | |
173 | if (OBJ_cmp(si->digestAlgorithm->algorithm, | |
174 | sitmp->digestAlgorithm->algorithm)) | |
175 | continue; | |
176 | messageDigest = CMS_signed_get0_data_by_OBJ(sitmp, | |
177 | OBJ_nid2obj | |
178 | (NID_pkcs9_messageDigest), | |
179 | -3, V_ASN1_OCTET_STRING); | |
180 | if (!messageDigest) { | |
181 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, | |
182 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
183 | return 0; | |
184 | } | |
185 | ||
186 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, | |
187 | V_ASN1_OCTET_STRING, | |
188 | messageDigest, -1)) | |
189 | return 1; | |
190 | else | |
191 | return 0; | |
192 | } | |
193 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST); | |
194 | return 0; | |
195 | } | |
8931b30d DSH |
196 | |
197 | int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type) | |
ae5c8664 MC |
198 | { |
199 | switch (type) { | |
200 | case CMS_SIGNERINFO_ISSUER_SERIAL: | |
201 | if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert)) | |
202 | return 0; | |
203 | break; | |
8931b30d | 204 | |
ae5c8664 MC |
205 | case CMS_SIGNERINFO_KEYIDENTIFIER: |
206 | if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert)) | |
207 | return 0; | |
208 | break; | |
8931b30d | 209 | |
ae5c8664 MC |
210 | default: |
211 | CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID); | |
212 | return 0; | |
213 | } | |
8931b30d | 214 | |
ae5c8664 | 215 | sid->type = type; |
8931b30d | 216 | |
ae5c8664 MC |
217 | return 1; |
218 | } | |
8931b30d DSH |
219 | |
220 | int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid, | |
ae5c8664 MC |
221 | ASN1_OCTET_STRING **keyid, |
222 | X509_NAME **issuer, | |
223 | ASN1_INTEGER **sno) | |
224 | { | |
225 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) { | |
226 | if (issuer) | |
227 | *issuer = sid->d.issuerAndSerialNumber->issuer; | |
228 | if (sno) | |
229 | *sno = sid->d.issuerAndSerialNumber->serialNumber; | |
230 | } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { | |
231 | if (keyid) | |
232 | *keyid = sid->d.subjectKeyIdentifier; | |
233 | } else | |
234 | return 0; | |
235 | return 1; | |
236 | } | |
8931b30d DSH |
237 | |
238 | int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert) | |
ae5c8664 MC |
239 | { |
240 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) | |
241 | return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert); | |
242 | else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) | |
243 | return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert); | |
244 | else | |
245 | return -1; | |
246 | } | |
8931b30d | 247 | |
f2edf318 | 248 | static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd) |
ae5c8664 MC |
249 | { |
250 | EVP_PKEY *pkey = si->pkey; | |
251 | int i; | |
252 | if (!pkey->ameth || !pkey->ameth->pkey_ctrl) | |
253 | return 1; | |
254 | i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si); | |
255 | if (i == -2) { | |
256 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); | |
257 | return 0; | |
258 | } | |
259 | if (i <= 0) { | |
260 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE); | |
261 | return 0; | |
262 | } | |
263 | return 1; | |
264 | } | |
f2edf318 | 265 | |
8931b30d | 266 | CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms, |
ae5c8664 MC |
267 | X509 *signer, EVP_PKEY *pk, const EVP_MD *md, |
268 | unsigned int flags) | |
269 | { | |
270 | CMS_SignedData *sd; | |
271 | CMS_SignerInfo *si = NULL; | |
272 | X509_ALGOR *alg; | |
273 | int i, type; | |
274 | if (!X509_check_private_key(signer, pk)) { | |
275 | CMSerr(CMS_F_CMS_ADD1_SIGNER, | |
276 | CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
277 | return NULL; | |
278 | } | |
279 | sd = cms_signed_data_init(cms); | |
280 | if (!sd) | |
281 | goto err; | |
282 | si = M_ASN1_new_of(CMS_SignerInfo); | |
283 | if (!si) | |
284 | goto merr; | |
285 | X509_check_purpose(signer, -1, -1); | |
286 | ||
287 | CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY); | |
288 | CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); | |
289 | ||
290 | si->pkey = pk; | |
291 | si->signer = signer; | |
292 | EVP_MD_CTX_init(&si->mctx); | |
293 | si->pctx = NULL; | |
294 | ||
295 | if (flags & CMS_USE_KEYID) { | |
296 | si->version = 3; | |
297 | if (sd->version < 3) | |
298 | sd->version = 3; | |
299 | type = CMS_SIGNERINFO_KEYIDENTIFIER; | |
300 | } else { | |
301 | type = CMS_SIGNERINFO_ISSUER_SERIAL; | |
302 | si->version = 1; | |
303 | } | |
304 | ||
305 | if (!cms_set1_SignerIdentifier(si->sid, signer, type)) | |
306 | goto err; | |
307 | ||
308 | if (md == NULL) { | |
309 | int def_nid; | |
310 | if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0) | |
311 | goto err; | |
312 | md = EVP_get_digestbynid(def_nid); | |
313 | if (md == NULL) { | |
314 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST); | |
315 | goto err; | |
316 | } | |
317 | } | |
318 | ||
319 | if (!md) { | |
320 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET); | |
321 | goto err; | |
322 | } | |
323 | ||
324 | cms_DigestAlgorithm_set(si->digestAlgorithm, md); | |
325 | ||
326 | /* See if digest is present in digestAlgorithms */ | |
327 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { | |
328 | ASN1_OBJECT *aoid; | |
329 | alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i); | |
330 | X509_ALGOR_get0(&aoid, NULL, NULL, alg); | |
331 | if (OBJ_obj2nid(aoid) == EVP_MD_type(md)) | |
332 | break; | |
333 | } | |
334 | ||
335 | if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) { | |
336 | alg = X509_ALGOR_new(); | |
337 | if (!alg) | |
338 | goto merr; | |
339 | cms_DigestAlgorithm_set(alg, md); | |
340 | if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) { | |
341 | X509_ALGOR_free(alg); | |
342 | goto merr; | |
343 | } | |
344 | } | |
345 | ||
346 | if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) | |
347 | goto err; | |
348 | if (!(flags & CMS_NOATTR)) { | |
349 | /* | |
350 | * Initialialize signed attributes strutucture so other attributes | |
351 | * such as signing time etc are added later even if we add none here. | |
352 | */ | |
353 | if (!si->signedAttrs) { | |
354 | si->signedAttrs = sk_X509_ATTRIBUTE_new_null(); | |
355 | if (!si->signedAttrs) | |
356 | goto merr; | |
357 | } | |
358 | ||
359 | if (!(flags & CMS_NOSMIMECAP)) { | |
360 | STACK_OF(X509_ALGOR) *smcap = NULL; | |
361 | i = CMS_add_standard_smimecap(&smcap); | |
362 | if (i) | |
363 | i = CMS_add_smimecap(si, smcap); | |
364 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); | |
365 | if (!i) | |
366 | goto merr; | |
367 | } | |
368 | if (flags & CMS_REUSE_DIGEST) { | |
369 | if (!cms_copy_messageDigest(cms, si)) | |
370 | goto err; | |
371 | if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) && | |
372 | !CMS_SignerInfo_sign(si)) | |
373 | goto err; | |
374 | } | |
375 | } | |
376 | ||
377 | if (!(flags & CMS_NOCERTS)) { | |
378 | /* NB ignore -1 return for duplicate cert */ | |
379 | if (!CMS_add1_cert(cms, signer)) | |
380 | goto merr; | |
381 | } | |
382 | ||
383 | if (flags & CMS_KEY_PARAM) { | |
384 | if (flags & CMS_NOATTR) { | |
385 | si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL); | |
386 | if (!si->pctx) | |
387 | goto err; | |
388 | if (EVP_PKEY_sign_init(si->pctx) <= 0) | |
389 | goto err; | |
390 | if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0) | |
391 | goto err; | |
392 | } else if (EVP_DigestSignInit(&si->mctx, &si->pctx, md, NULL, pk) <= | |
393 | 0) | |
394 | goto err; | |
395 | } | |
396 | ||
397 | if (!sd->signerInfos) | |
398 | sd->signerInfos = sk_CMS_SignerInfo_new_null(); | |
399 | if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si)) | |
400 | goto merr; | |
401 | ||
402 | return si; | |
403 | ||
404 | merr: | |
405 | CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE); | |
406 | err: | |
407 | if (si) | |
408 | M_ASN1_free_of(si, CMS_SignerInfo); | |
409 | return NULL; | |
410 | ||
411 | } | |
8931b30d | 412 | |
1e26a8ba | 413 | static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t) |
ae5c8664 MC |
414 | { |
415 | ASN1_TIME *tt; | |
416 | int r = 0; | |
417 | if (t) | |
418 | tt = t; | |
419 | else | |
420 | tt = X509_gmtime_adj(NULL, 0); | |
8931b30d | 421 | |
ae5c8664 MC |
422 | if (!tt) |
423 | goto merr; | |
8931b30d | 424 | |
ae5c8664 MC |
425 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime, |
426 | tt->type, tt, -1) <= 0) | |
427 | goto merr; | |
8931b30d | 428 | |
ae5c8664 | 429 | r = 1; |
8931b30d | 430 | |
ae5c8664 | 431 | merr: |
8931b30d | 432 | |
ae5c8664 MC |
433 | if (!t) |
434 | ASN1_TIME_free(tt); | |
8931b30d | 435 | |
ae5c8664 MC |
436 | if (!r) |
437 | CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE); | |
8931b30d | 438 | |
ae5c8664 | 439 | return r; |
8931b30d | 440 | |
ae5c8664 | 441 | } |
8931b30d | 442 | |
f2edf318 | 443 | EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si) |
ae5c8664 MC |
444 | { |
445 | return si->pctx; | |
446 | } | |
f2edf318 DSH |
447 | |
448 | EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si) | |
ae5c8664 MC |
449 | { |
450 | return &si->mctx; | |
451 | } | |
f2edf318 | 452 | |
8931b30d | 453 | STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms) |
ae5c8664 MC |
454 | { |
455 | CMS_SignedData *sd; | |
456 | sd = cms_get0_signed(cms); | |
457 | if (!sd) | |
458 | return NULL; | |
459 | return sd->signerInfos; | |
460 | } | |
8931b30d DSH |
461 | |
462 | STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms) | |
ae5c8664 MC |
463 | { |
464 | STACK_OF(X509) *signers = NULL; | |
465 | STACK_OF(CMS_SignerInfo) *sinfos; | |
466 | CMS_SignerInfo *si; | |
467 | int i; | |
468 | sinfos = CMS_get0_SignerInfos(cms); | |
469 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
470 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
471 | if (si->signer) { | |
472 | if (!signers) { | |
473 | signers = sk_X509_new_null(); | |
474 | if (!signers) | |
475 | return NULL; | |
476 | } | |
477 | if (!sk_X509_push(signers, si->signer)) { | |
478 | sk_X509_free(signers); | |
479 | return NULL; | |
480 | } | |
481 | } | |
482 | } | |
483 | return signers; | |
484 | } | |
8931b30d DSH |
485 | |
486 | void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer) | |
ae5c8664 MC |
487 | { |
488 | if (signer) { | |
489 | CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); | |
490 | if (si->pkey) | |
491 | EVP_PKEY_free(si->pkey); | |
492 | si->pkey = X509_get_pubkey(signer); | |
493 | } | |
494 | if (si->signer) | |
495 | X509_free(si->signer); | |
496 | si->signer = signer; | |
497 | } | |
8931b30d DSH |
498 | |
499 | int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, | |
ae5c8664 MC |
500 | ASN1_OCTET_STRING **keyid, |
501 | X509_NAME **issuer, ASN1_INTEGER **sno) | |
502 | { | |
503 | return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno); | |
504 | } | |
8931b30d DSH |
505 | |
506 | int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert) | |
ae5c8664 MC |
507 | { |
508 | return cms_SignerIdentifier_cert_cmp(si->sid, cert); | |
509 | } | |
8931b30d DSH |
510 | |
511 | int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts, | |
ae5c8664 MC |
512 | unsigned int flags) |
513 | { | |
514 | CMS_SignedData *sd; | |
515 | CMS_SignerInfo *si; | |
516 | CMS_CertificateChoices *cch; | |
517 | STACK_OF(CMS_CertificateChoices) *certs; | |
518 | X509 *x; | |
519 | int i, j; | |
520 | int ret = 0; | |
521 | sd = cms_get0_signed(cms); | |
522 | if (!sd) | |
523 | return -1; | |
524 | certs = sd->certificates; | |
525 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { | |
526 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
527 | if (si->signer) | |
528 | continue; | |
529 | ||
530 | for (j = 0; j < sk_X509_num(scerts); j++) { | |
531 | x = sk_X509_value(scerts, j); | |
532 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) { | |
533 | CMS_SignerInfo_set1_signer_cert(si, x); | |
534 | ret++; | |
535 | break; | |
536 | } | |
537 | } | |
538 | ||
539 | if (si->signer || (flags & CMS_NOINTERN)) | |
540 | continue; | |
541 | ||
542 | for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) { | |
543 | cch = sk_CMS_CertificateChoices_value(certs, j); | |
544 | if (cch->type != 0) | |
545 | continue; | |
546 | x = cch->d.certificate; | |
547 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) { | |
548 | CMS_SignerInfo_set1_signer_cert(si, x); | |
549 | ret++; | |
550 | break; | |
551 | } | |
552 | } | |
553 | } | |
554 | return ret; | |
555 | } | |
556 | ||
557 | void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, | |
558 | X509 **signer, X509_ALGOR **pdig, | |
559 | X509_ALGOR **psig) | |
560 | { | |
561 | if (pk) | |
562 | *pk = si->pkey; | |
563 | if (signer) | |
564 | *signer = si->signer; | |
565 | if (pdig) | |
566 | *pdig = si->digestAlgorithm; | |
567 | if (psig) | |
568 | *psig = si->signatureAlgorithm; | |
569 | } | |
8931b30d | 570 | |
233069f8 | 571 | ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si) |
ae5c8664 MC |
572 | { |
573 | return si->signature; | |
574 | } | |
233069f8 | 575 | |
ff80280b | 576 | static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms, |
ae5c8664 MC |
577 | CMS_SignerInfo *si, BIO *chain) |
578 | { | |
579 | EVP_MD_CTX mctx; | |
580 | int r = 0; | |
581 | EVP_PKEY_CTX *pctx = NULL; | |
582 | EVP_MD_CTX_init(&mctx); | |
583 | ||
584 | if (!si->pkey) { | |
585 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY); | |
586 | return 0; | |
587 | } | |
588 | ||
589 | if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) | |
590 | goto err; | |
591 | /* Set SignerInfo algortihm details if we used custom parametsr */ | |
592 | if (si->pctx && !cms_sd_asn1_ctrl(si, 0)) | |
593 | goto err; | |
594 | ||
595 | /* | |
596 | * If any signed attributes calculate and add messageDigest attribute | |
597 | */ | |
598 | ||
599 | if (CMS_signed_get_attr_count(si) >= 0) { | |
600 | ASN1_OBJECT *ctype = | |
601 | cms->d.signedData->encapContentInfo->eContentType; | |
602 | unsigned char md[EVP_MAX_MD_SIZE]; | |
603 | unsigned int mdlen; | |
604 | if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) | |
605 | goto err; | |
606 | if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, | |
607 | V_ASN1_OCTET_STRING, md, mdlen)) | |
608 | goto err; | |
609 | /* Copy content type across */ | |
610 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType, | |
611 | V_ASN1_OBJECT, ctype, -1) <= 0) | |
612 | goto err; | |
613 | if (!CMS_SignerInfo_sign(si)) | |
614 | goto err; | |
615 | } else if (si->pctx) { | |
616 | unsigned char *sig; | |
617 | size_t siglen; | |
618 | unsigned char md[EVP_MAX_MD_SIZE]; | |
619 | unsigned int mdlen; | |
620 | pctx = si->pctx; | |
621 | if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) | |
622 | goto err; | |
623 | siglen = EVP_PKEY_size(si->pkey); | |
624 | sig = OPENSSL_malloc(siglen); | |
625 | if (!sig) { | |
626 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); | |
627 | goto err; | |
628 | } | |
629 | if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) | |
630 | goto err; | |
631 | ASN1_STRING_set0(si->signature, sig, siglen); | |
632 | } else { | |
633 | unsigned char *sig; | |
634 | unsigned int siglen; | |
635 | sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey)); | |
636 | if (!sig) { | |
637 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); | |
638 | goto err; | |
639 | } | |
640 | if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) { | |
641 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR); | |
642 | OPENSSL_free(sig); | |
643 | goto err; | |
644 | } | |
645 | ASN1_STRING_set0(si->signature, sig, siglen); | |
646 | } | |
647 | ||
648 | r = 1; | |
649 | ||
650 | err: | |
651 | EVP_MD_CTX_cleanup(&mctx); | |
652 | if (pctx) | |
653 | EVP_PKEY_CTX_free(pctx); | |
654 | return r; | |
655 | ||
656 | } | |
8931b30d DSH |
657 | |
658 | int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain) | |
ae5c8664 MC |
659 | { |
660 | STACK_OF(CMS_SignerInfo) *sinfos; | |
661 | CMS_SignerInfo *si; | |
662 | int i; | |
663 | sinfos = CMS_get0_SignerInfos(cms); | |
664 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
665 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
666 | if (!cms_SignerInfo_content_sign(cms, si, chain)) | |
667 | return 0; | |
668 | } | |
669 | cms->d.signedData->encapContentInfo->partial = 0; | |
670 | return 1; | |
671 | } | |
8931b30d DSH |
672 | |
673 | int CMS_SignerInfo_sign(CMS_SignerInfo *si) | |
ae5c8664 MC |
674 | { |
675 | EVP_MD_CTX *mctx = &si->mctx; | |
676 | EVP_PKEY_CTX *pctx; | |
677 | unsigned char *abuf = NULL; | |
678 | int alen; | |
679 | size_t siglen; | |
680 | const EVP_MD *md = NULL; | |
681 | ||
682 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
683 | if (md == NULL) | |
684 | return 0; | |
685 | ||
686 | if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) { | |
687 | if (!cms_add1_signingTime(si, NULL)) | |
688 | goto err; | |
689 | } | |
690 | ||
691 | if (si->pctx) | |
692 | pctx = si->pctx; | |
693 | else { | |
694 | EVP_MD_CTX_init(mctx); | |
695 | if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0) | |
696 | goto err; | |
697 | } | |
698 | ||
699 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
700 | EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) { | |
701 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
702 | goto err; | |
703 | } | |
704 | ||
705 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, | |
706 | ASN1_ITEM_rptr(CMS_Attributes_Sign)); | |
707 | if (!abuf) | |
708 | goto err; | |
709 | if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0) | |
710 | goto err; | |
711 | if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0) | |
712 | goto err; | |
713 | OPENSSL_free(abuf); | |
714 | abuf = OPENSSL_malloc(siglen); | |
715 | if (!abuf) | |
716 | goto err; | |
717 | if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0) | |
718 | goto err; | |
719 | ||
720 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
721 | EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) { | |
722 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
723 | goto err; | |
724 | } | |
725 | ||
726 | EVP_MD_CTX_cleanup(mctx); | |
727 | ||
728 | ASN1_STRING_set0(si->signature, abuf, siglen); | |
729 | ||
730 | return 1; | |
731 | ||
732 | err: | |
733 | if (abuf) | |
734 | OPENSSL_free(abuf); | |
735 | EVP_MD_CTX_cleanup(mctx); | |
736 | return 0; | |
737 | ||
738 | } | |
8931b30d DSH |
739 | |
740 | int CMS_SignerInfo_verify(CMS_SignerInfo *si) | |
ae5c8664 MC |
741 | { |
742 | EVP_MD_CTX *mctx = &si->mctx; | |
743 | unsigned char *abuf = NULL; | |
744 | int alen, r = -1; | |
745 | const EVP_MD *md = NULL; | |
746 | ||
747 | if (!si->pkey) { | |
748 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY); | |
749 | return -1; | |
750 | } | |
751 | ||
752 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
753 | if (md == NULL) | |
754 | return -1; | |
755 | EVP_MD_CTX_init(mctx); | |
756 | if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0) | |
757 | goto err; | |
758 | ||
759 | if (!cms_sd_asn1_ctrl(si, 1)) | |
760 | goto err; | |
761 | ||
762 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, | |
763 | ASN1_ITEM_rptr(CMS_Attributes_Verify)); | |
764 | if (!abuf) | |
765 | goto err; | |
766 | r = EVP_DigestVerifyUpdate(mctx, abuf, alen); | |
767 | OPENSSL_free(abuf); | |
768 | if (r <= 0) { | |
769 | r = -1; | |
770 | goto err; | |
771 | } | |
772 | r = EVP_DigestVerifyFinal(mctx, | |
773 | si->signature->data, si->signature->length); | |
774 | if (r <= 0) | |
775 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE); | |
776 | err: | |
777 | EVP_MD_CTX_cleanup(mctx); | |
778 | return r; | |
779 | } | |
8931b30d DSH |
780 | |
781 | /* Create a chain of digest BIOs from a CMS ContentInfo */ | |
782 | ||
783 | BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms) | |
ae5c8664 MC |
784 | { |
785 | int i; | |
786 | CMS_SignedData *sd; | |
787 | BIO *chain = NULL; | |
788 | sd = cms_get0_signed(cms); | |
789 | if (!sd) | |
790 | return NULL; | |
791 | if (cms->d.signedData->encapContentInfo->partial) | |
792 | cms_sd_set_version(sd); | |
793 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { | |
794 | X509_ALGOR *digestAlgorithm; | |
795 | BIO *mdbio; | |
796 | digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i); | |
797 | mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm); | |
798 | if (!mdbio) | |
799 | goto err; | |
800 | if (chain) | |
801 | BIO_push(chain, mdbio); | |
802 | else | |
803 | chain = mdbio; | |
804 | } | |
805 | return chain; | |
806 | err: | |
807 | if (chain) | |
808 | BIO_free_all(chain); | |
809 | return NULL; | |
810 | } | |
8931b30d DSH |
811 | |
812 | int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain) | |
ae5c8664 MC |
813 | { |
814 | ASN1_OCTET_STRING *os = NULL; | |
815 | EVP_MD_CTX mctx; | |
816 | EVP_PKEY_CTX *pkctx = NULL; | |
817 | int r = -1; | |
818 | unsigned char mval[EVP_MAX_MD_SIZE]; | |
819 | unsigned int mlen; | |
820 | EVP_MD_CTX_init(&mctx); | |
821 | /* If we have any signed attributes look for messageDigest value */ | |
822 | if (CMS_signed_get_attr_count(si) >= 0) { | |
823 | os = CMS_signed_get0_data_by_OBJ(si, | |
824 | OBJ_nid2obj(NID_pkcs9_messageDigest), | |
825 | -3, V_ASN1_OCTET_STRING); | |
826 | if (!os) { | |
827 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
828 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
829 | goto err; | |
830 | } | |
831 | } | |
832 | ||
833 | if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) | |
834 | goto err; | |
835 | ||
836 | if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) { | |
837 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
838 | CMS_R_UNABLE_TO_FINALIZE_CONTEXT); | |
839 | goto err; | |
840 | } | |
841 | ||
842 | /* If messageDigest found compare it */ | |
843 | ||
844 | if (os) { | |
845 | if (mlen != (unsigned int)os->length) { | |
846 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
847 | CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH); | |
848 | goto err; | |
849 | } | |
850 | ||
851 | if (memcmp(mval, os->data, mlen)) { | |
852 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
853 | CMS_R_VERIFICATION_FAILURE); | |
854 | r = 0; | |
855 | } else | |
856 | r = 1; | |
857 | } else { | |
858 | const EVP_MD *md = EVP_MD_CTX_md(&mctx); | |
859 | pkctx = EVP_PKEY_CTX_new(si->pkey, NULL); | |
860 | if (EVP_PKEY_verify_init(pkctx) <= 0) | |
861 | goto err; | |
862 | if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0) | |
863 | goto err; | |
864 | si->pctx = pkctx; | |
865 | if (!cms_sd_asn1_ctrl(si, 1)) | |
866 | goto err; | |
867 | r = EVP_PKEY_verify(pkctx, si->signature->data, | |
868 | si->signature->length, mval, mlen); | |
869 | if (r <= 0) { | |
870 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
871 | CMS_R_VERIFICATION_FAILURE); | |
872 | r = 0; | |
873 | } | |
874 | } | |
875 | ||
876 | err: | |
877 | if (pkctx) | |
878 | EVP_PKEY_CTX_free(pkctx); | |
879 | EVP_MD_CTX_cleanup(&mctx); | |
880 | return r; | |
881 | ||
882 | } | |
8931b30d DSH |
883 | |
884 | int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs) | |
ae5c8664 MC |
885 | { |
886 | unsigned char *smder = NULL; | |
887 | int smderlen, r; | |
888 | smderlen = i2d_X509_ALGORS(algs, &smder); | |
889 | if (smderlen <= 0) | |
890 | return 0; | |
891 | r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities, | |
892 | V_ASN1_SEQUENCE, smder, smderlen); | |
893 | OPENSSL_free(smder); | |
894 | return r; | |
895 | } | |
8931b30d DSH |
896 | |
897 | int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, | |
ae5c8664 MC |
898 | int algnid, int keysize) |
899 | { | |
900 | X509_ALGOR *alg; | |
901 | ASN1_INTEGER *key = NULL; | |
902 | if (keysize > 0) { | |
903 | key = ASN1_INTEGER_new(); | |
904 | if (!key || !ASN1_INTEGER_set(key, keysize)) | |
905 | return 0; | |
906 | } | |
907 | alg = X509_ALGOR_new(); | |
908 | if (!alg) { | |
909 | if (key) | |
910 | ASN1_INTEGER_free(key); | |
911 | return 0; | |
912 | } | |
913 | ||
914 | X509_ALGOR_set0(alg, OBJ_nid2obj(algnid), | |
915 | key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key); | |
916 | if (!*algs) | |
917 | *algs = sk_X509_ALGOR_new_null(); | |
918 | if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) { | |
919 | X509_ALGOR_free(alg); | |
920 | return 0; | |
921 | } | |
922 | return 1; | |
923 | } | |
8931b30d DSH |
924 | |
925 | /* Check to see if a cipher exists and if so add S/MIME capabilities */ | |
926 | ||
927 | static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
ae5c8664 MC |
928 | { |
929 | if (EVP_get_cipherbynid(nid)) | |
930 | return CMS_add_simple_smimecap(sk, nid, arg); | |
931 | return 1; | |
932 | } | |
8931b30d DSH |
933 | |
934 | static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
ae5c8664 MC |
935 | { |
936 | if (EVP_get_digestbynid(nid)) | |
937 | return CMS_add_simple_smimecap(sk, nid, arg); | |
938 | return 1; | |
939 | } | |
8931b30d DSH |
940 | |
941 | int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap) | |
ae5c8664 MC |
942 | { |
943 | if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1) | |
944 | || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1) | |
945 | || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) | |
946 | || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1) | |
947 | || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1) | |
948 | || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) | |
949 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128) | |
950 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64) | |
951 | || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1) | |
952 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40)) | |
953 | return 0; | |
954 | return 1; | |
955 | } |