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Commit | Line | Data |
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0f113f3e | 1 | /* |
b1322259 | 2 | * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved. |
8931b30d | 3 | * |
b1322259 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8931b30d DSH |
8 | */ |
9 | ||
b39fc560 | 10 | #include "internal/cryptlib.h" |
8931b30d DSH |
11 | #include <openssl/asn1t.h> |
12 | #include <openssl/pem.h> | |
17c2764d | 13 | #include <openssl/x509.h> |
8931b30d DSH |
14 | #include <openssl/x509v3.h> |
15 | #include <openssl/err.h> | |
16 | #include <openssl/cms.h> | |
17 | #include "cms_lcl.h" | |
5fe736e5 | 18 | #include "internal/asn1_int.h" |
3aeb9348 | 19 | #include "internal/evp_int.h" |
8931b30d DSH |
20 | |
21 | /* CMS SignedData Utilities */ | |
22 | ||
8931b30d | 23 | static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms) |
0f113f3e MC |
24 | { |
25 | if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) { | |
26 | CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA); | |
27 | return NULL; | |
28 | } | |
29 | return cms->d.signedData; | |
30 | } | |
8931b30d DSH |
31 | |
32 | static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms) | |
0f113f3e MC |
33 | { |
34 | if (cms->d.other == NULL) { | |
35 | cms->d.signedData = M_ASN1_new_of(CMS_SignedData); | |
36 | if (!cms->d.signedData) { | |
37 | CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE); | |
38 | return NULL; | |
39 | } | |
40 | cms->d.signedData->version = 1; | |
41 | cms->d.signedData->encapContentInfo->eContentType = | |
42 | OBJ_nid2obj(NID_pkcs7_data); | |
43 | cms->d.signedData->encapContentInfo->partial = 1; | |
44 | ASN1_OBJECT_free(cms->contentType); | |
45 | cms->contentType = OBJ_nid2obj(NID_pkcs7_signed); | |
46 | return cms->d.signedData; | |
47 | } | |
48 | return cms_get0_signed(cms); | |
49 | } | |
8931b30d | 50 | |
0d4fb843 | 51 | /* Just initialise SignedData e.g. for certs only structure */ |
8931b30d DSH |
52 | |
53 | int CMS_SignedData_init(CMS_ContentInfo *cms) | |
0f113f3e MC |
54 | { |
55 | if (cms_signed_data_init(cms)) | |
56 | return 1; | |
57 | else | |
58 | return 0; | |
59 | } | |
8931b30d DSH |
60 | |
61 | /* Check structures and fixup version numbers (if necessary) */ | |
62 | ||
63 | static void cms_sd_set_version(CMS_SignedData *sd) | |
0f113f3e MC |
64 | { |
65 | int i; | |
66 | CMS_CertificateChoices *cch; | |
67 | CMS_RevocationInfoChoice *rch; | |
68 | CMS_SignerInfo *si; | |
69 | ||
70 | for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) { | |
71 | cch = sk_CMS_CertificateChoices_value(sd->certificates, i); | |
72 | if (cch->type == CMS_CERTCHOICE_OTHER) { | |
73 | if (sd->version < 5) | |
74 | sd->version = 5; | |
75 | } else if (cch->type == CMS_CERTCHOICE_V2ACERT) { | |
76 | if (sd->version < 4) | |
77 | sd->version = 4; | |
78 | } else if (cch->type == CMS_CERTCHOICE_V1ACERT) { | |
79 | if (sd->version < 3) | |
80 | sd->version = 3; | |
81 | } | |
82 | } | |
83 | ||
84 | for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) { | |
85 | rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i); | |
86 | if (rch->type == CMS_REVCHOICE_OTHER) { | |
87 | if (sd->version < 5) | |
88 | sd->version = 5; | |
89 | } | |
90 | } | |
91 | ||
92 | if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data) | |
93 | && (sd->version < 3)) | |
94 | sd->version = 3; | |
95 | ||
96 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { | |
97 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
98 | if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { | |
99 | if (si->version < 3) | |
100 | si->version = 3; | |
101 | if (sd->version < 3) | |
102 | sd->version = 3; | |
103 | } else if (si->version < 1) | |
104 | si->version = 1; | |
105 | } | |
106 | ||
107 | if (sd->version < 1) | |
108 | sd->version = 1; | |
109 | ||
110 | } | |
111 | ||
8931b30d DSH |
112 | /* Copy an existing messageDigest value */ |
113 | ||
114 | static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si) | |
0f113f3e MC |
115 | { |
116 | STACK_OF(CMS_SignerInfo) *sinfos; | |
117 | CMS_SignerInfo *sitmp; | |
118 | int i; | |
119 | sinfos = CMS_get0_SignerInfos(cms); | |
120 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
121 | ASN1_OCTET_STRING *messageDigest; | |
122 | sitmp = sk_CMS_SignerInfo_value(sinfos, i); | |
123 | if (sitmp == si) | |
124 | continue; | |
125 | if (CMS_signed_get_attr_count(sitmp) < 0) | |
126 | continue; | |
127 | if (OBJ_cmp(si->digestAlgorithm->algorithm, | |
128 | sitmp->digestAlgorithm->algorithm)) | |
129 | continue; | |
130 | messageDigest = CMS_signed_get0_data_by_OBJ(sitmp, | |
131 | OBJ_nid2obj | |
132 | (NID_pkcs9_messageDigest), | |
133 | -3, V_ASN1_OCTET_STRING); | |
134 | if (!messageDigest) { | |
135 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, | |
136 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
137 | return 0; | |
138 | } | |
139 | ||
140 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, | |
141 | V_ASN1_OCTET_STRING, | |
142 | messageDigest, -1)) | |
143 | return 1; | |
144 | else | |
145 | return 0; | |
146 | } | |
147 | CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST); | |
148 | return 0; | |
149 | } | |
8931b30d DSH |
150 | |
151 | int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type) | |
0f113f3e MC |
152 | { |
153 | switch (type) { | |
154 | case CMS_SIGNERINFO_ISSUER_SERIAL: | |
155 | if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert)) | |
156 | return 0; | |
157 | break; | |
8931b30d | 158 | |
0f113f3e MC |
159 | case CMS_SIGNERINFO_KEYIDENTIFIER: |
160 | if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert)) | |
161 | return 0; | |
162 | break; | |
8931b30d | 163 | |
0f113f3e MC |
164 | default: |
165 | CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID); | |
166 | return 0; | |
167 | } | |
8931b30d | 168 | |
0f113f3e | 169 | sid->type = type; |
8931b30d | 170 | |
0f113f3e MC |
171 | return 1; |
172 | } | |
8931b30d DSH |
173 | |
174 | int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid, | |
0f113f3e MC |
175 | ASN1_OCTET_STRING **keyid, |
176 | X509_NAME **issuer, | |
177 | ASN1_INTEGER **sno) | |
178 | { | |
179 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) { | |
180 | if (issuer) | |
181 | *issuer = sid->d.issuerAndSerialNumber->issuer; | |
182 | if (sno) | |
183 | *sno = sid->d.issuerAndSerialNumber->serialNumber; | |
184 | } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { | |
185 | if (keyid) | |
186 | *keyid = sid->d.subjectKeyIdentifier; | |
187 | } else | |
188 | return 0; | |
189 | return 1; | |
190 | } | |
8931b30d DSH |
191 | |
192 | int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert) | |
0f113f3e MC |
193 | { |
194 | if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) | |
195 | return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert); | |
196 | else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) | |
197 | return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert); | |
198 | else | |
199 | return -1; | |
200 | } | |
8931b30d | 201 | |
e365352d | 202 | static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd) |
0f113f3e MC |
203 | { |
204 | EVP_PKEY *pkey = si->pkey; | |
205 | int i; | |
206 | if (!pkey->ameth || !pkey->ameth->pkey_ctrl) | |
207 | return 1; | |
208 | i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si); | |
209 | if (i == -2) { | |
210 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); | |
211 | return 0; | |
212 | } | |
213 | if (i <= 0) { | |
214 | CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE); | |
215 | return 0; | |
216 | } | |
217 | return 1; | |
218 | } | |
e365352d | 219 | |
8931b30d | 220 | CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms, |
0f113f3e MC |
221 | X509 *signer, EVP_PKEY *pk, const EVP_MD *md, |
222 | unsigned int flags) | |
223 | { | |
224 | CMS_SignedData *sd; | |
225 | CMS_SignerInfo *si = NULL; | |
226 | X509_ALGOR *alg; | |
227 | int i, type; | |
228 | if (!X509_check_private_key(signer, pk)) { | |
229 | CMSerr(CMS_F_CMS_ADD1_SIGNER, | |
230 | CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); | |
231 | return NULL; | |
232 | } | |
233 | sd = cms_signed_data_init(cms); | |
234 | if (!sd) | |
235 | goto err; | |
236 | si = M_ASN1_new_of(CMS_SignerInfo); | |
237 | if (!si) | |
238 | goto merr; | |
109f8b5d | 239 | /* Call for side-effect of computing hash and caching extensions */ |
0f113f3e MC |
240 | X509_check_purpose(signer, -1, -1); |
241 | ||
05f0fb9f | 242 | X509_up_ref(signer); |
03273d61 | 243 | EVP_PKEY_up_ref(pk); |
0f113f3e MC |
244 | |
245 | si->pkey = pk; | |
246 | si->signer = signer; | |
bfb0641f | 247 | si->mctx = EVP_MD_CTX_new(); |
0f113f3e MC |
248 | si->pctx = NULL; |
249 | ||
6e59a892 RL |
250 | if (si->mctx == NULL) { |
251 | CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE); | |
252 | goto err; | |
253 | } | |
254 | ||
0f113f3e MC |
255 | if (flags & CMS_USE_KEYID) { |
256 | si->version = 3; | |
257 | if (sd->version < 3) | |
258 | sd->version = 3; | |
259 | type = CMS_SIGNERINFO_KEYIDENTIFIER; | |
260 | } else { | |
261 | type = CMS_SIGNERINFO_ISSUER_SERIAL; | |
262 | si->version = 1; | |
263 | } | |
264 | ||
265 | if (!cms_set1_SignerIdentifier(si->sid, signer, type)) | |
266 | goto err; | |
267 | ||
268 | if (md == NULL) { | |
269 | int def_nid; | |
270 | if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0) | |
271 | goto err; | |
272 | md = EVP_get_digestbynid(def_nid); | |
273 | if (md == NULL) { | |
274 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST); | |
275 | goto err; | |
276 | } | |
277 | } | |
278 | ||
279 | if (!md) { | |
280 | CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET); | |
281 | goto err; | |
282 | } | |
283 | ||
284 | X509_ALGOR_set_md(si->digestAlgorithm, md); | |
285 | ||
286 | /* See if digest is present in digestAlgorithms */ | |
287 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { | |
ac4e2577 | 288 | const ASN1_OBJECT *aoid; |
0f113f3e MC |
289 | alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i); |
290 | X509_ALGOR_get0(&aoid, NULL, NULL, alg); | |
291 | if (OBJ_obj2nid(aoid) == EVP_MD_type(md)) | |
292 | break; | |
293 | } | |
294 | ||
295 | if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) { | |
296 | alg = X509_ALGOR_new(); | |
90945fa3 | 297 | if (alg == NULL) |
0f113f3e MC |
298 | goto merr; |
299 | X509_ALGOR_set_md(alg, md); | |
300 | if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) { | |
301 | X509_ALGOR_free(alg); | |
302 | goto merr; | |
303 | } | |
304 | } | |
305 | ||
306 | if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) | |
307 | goto err; | |
308 | if (!(flags & CMS_NOATTR)) { | |
309 | /* | |
0d4fb843 | 310 | * Initialize signed attributes structure so other attributes |
0f113f3e MC |
311 | * such as signing time etc are added later even if we add none here. |
312 | */ | |
313 | if (!si->signedAttrs) { | |
314 | si->signedAttrs = sk_X509_ATTRIBUTE_new_null(); | |
315 | if (!si->signedAttrs) | |
316 | goto merr; | |
317 | } | |
318 | ||
319 | if (!(flags & CMS_NOSMIMECAP)) { | |
320 | STACK_OF(X509_ALGOR) *smcap = NULL; | |
321 | i = CMS_add_standard_smimecap(&smcap); | |
322 | if (i) | |
323 | i = CMS_add_smimecap(si, smcap); | |
324 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); | |
325 | if (!i) | |
326 | goto merr; | |
327 | } | |
328 | if (flags & CMS_REUSE_DIGEST) { | |
329 | if (!cms_copy_messageDigest(cms, si)) | |
330 | goto err; | |
331 | if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) && | |
332 | !CMS_SignerInfo_sign(si)) | |
333 | goto err; | |
334 | } | |
335 | } | |
336 | ||
337 | if (!(flags & CMS_NOCERTS)) { | |
338 | /* NB ignore -1 return for duplicate cert */ | |
339 | if (!CMS_add1_cert(cms, signer)) | |
340 | goto merr; | |
341 | } | |
342 | ||
343 | if (flags & CMS_KEY_PARAM) { | |
344 | if (flags & CMS_NOATTR) { | |
345 | si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL); | |
90945fa3 | 346 | if (si->pctx == NULL) |
0f113f3e MC |
347 | goto err; |
348 | if (EVP_PKEY_sign_init(si->pctx) <= 0) | |
349 | goto err; | |
350 | if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0) | |
351 | goto err; | |
6e59a892 | 352 | } else if (EVP_DigestSignInit(si->mctx, &si->pctx, md, NULL, pk) <= |
0f113f3e MC |
353 | 0) |
354 | goto err; | |
355 | } | |
356 | ||
357 | if (!sd->signerInfos) | |
358 | sd->signerInfos = sk_CMS_SignerInfo_new_null(); | |
359 | if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si)) | |
360 | goto merr; | |
361 | ||
362 | return si; | |
363 | ||
364 | merr: | |
365 | CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE); | |
366 | err: | |
2ace7450 | 367 | M_ASN1_free_of(si, CMS_SignerInfo); |
0f113f3e MC |
368 | return NULL; |
369 | ||
370 | } | |
8931b30d | 371 | |
1e26a8ba | 372 | static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t) |
0f113f3e MC |
373 | { |
374 | ASN1_TIME *tt; | |
375 | int r = 0; | |
376 | if (t) | |
377 | tt = t; | |
378 | else | |
379 | tt = X509_gmtime_adj(NULL, 0); | |
8931b30d | 380 | |
0f113f3e MC |
381 | if (!tt) |
382 | goto merr; | |
8931b30d | 383 | |
0f113f3e MC |
384 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime, |
385 | tt->type, tt, -1) <= 0) | |
386 | goto merr; | |
8931b30d | 387 | |
0f113f3e | 388 | r = 1; |
8931b30d | 389 | |
0f113f3e | 390 | merr: |
8931b30d | 391 | |
0f113f3e MC |
392 | if (!t) |
393 | ASN1_TIME_free(tt); | |
8931b30d | 394 | |
0f113f3e MC |
395 | if (!r) |
396 | CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE); | |
8931b30d | 397 | |
0f113f3e | 398 | return r; |
8931b30d | 399 | |
0f113f3e | 400 | } |
8931b30d | 401 | |
e365352d | 402 | EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si) |
0f113f3e MC |
403 | { |
404 | return si->pctx; | |
405 | } | |
e365352d DSH |
406 | |
407 | EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si) | |
0f113f3e | 408 | { |
6e59a892 | 409 | return si->mctx; |
0f113f3e | 410 | } |
e365352d | 411 | |
8931b30d | 412 | STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms) |
0f113f3e MC |
413 | { |
414 | CMS_SignedData *sd; | |
415 | sd = cms_get0_signed(cms); | |
416 | if (!sd) | |
417 | return NULL; | |
418 | return sd->signerInfos; | |
419 | } | |
8931b30d DSH |
420 | |
421 | STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms) | |
0f113f3e MC |
422 | { |
423 | STACK_OF(X509) *signers = NULL; | |
424 | STACK_OF(CMS_SignerInfo) *sinfos; | |
425 | CMS_SignerInfo *si; | |
426 | int i; | |
427 | sinfos = CMS_get0_SignerInfos(cms); | |
428 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
429 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
430 | if (si->signer) { | |
431 | if (!signers) { | |
432 | signers = sk_X509_new_null(); | |
433 | if (!signers) | |
434 | return NULL; | |
435 | } | |
436 | if (!sk_X509_push(signers, si->signer)) { | |
437 | sk_X509_free(signers); | |
438 | return NULL; | |
439 | } | |
440 | } | |
441 | } | |
442 | return signers; | |
443 | } | |
8931b30d DSH |
444 | |
445 | void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer) | |
0f113f3e MC |
446 | { |
447 | if (signer) { | |
05f0fb9f | 448 | X509_up_ref(signer); |
c5ba2d99 | 449 | EVP_PKEY_free(si->pkey); |
0f113f3e MC |
450 | si->pkey = X509_get_pubkey(signer); |
451 | } | |
222561fe | 452 | X509_free(si->signer); |
0f113f3e MC |
453 | si->signer = signer; |
454 | } | |
8931b30d DSH |
455 | |
456 | int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, | |
0f113f3e MC |
457 | ASN1_OCTET_STRING **keyid, |
458 | X509_NAME **issuer, ASN1_INTEGER **sno) | |
459 | { | |
460 | return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno); | |
461 | } | |
8931b30d DSH |
462 | |
463 | int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert) | |
0f113f3e MC |
464 | { |
465 | return cms_SignerIdentifier_cert_cmp(si->sid, cert); | |
466 | } | |
8931b30d DSH |
467 | |
468 | int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts, | |
0f113f3e MC |
469 | unsigned int flags) |
470 | { | |
471 | CMS_SignedData *sd; | |
472 | CMS_SignerInfo *si; | |
473 | CMS_CertificateChoices *cch; | |
474 | STACK_OF(CMS_CertificateChoices) *certs; | |
475 | X509 *x; | |
476 | int i, j; | |
477 | int ret = 0; | |
478 | sd = cms_get0_signed(cms); | |
479 | if (!sd) | |
480 | return -1; | |
481 | certs = sd->certificates; | |
482 | for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { | |
483 | si = sk_CMS_SignerInfo_value(sd->signerInfos, i); | |
484 | if (si->signer) | |
485 | continue; | |
486 | ||
487 | for (j = 0; j < sk_X509_num(scerts); j++) { | |
488 | x = sk_X509_value(scerts, j); | |
489 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) { | |
490 | CMS_SignerInfo_set1_signer_cert(si, x); | |
491 | ret++; | |
492 | break; | |
493 | } | |
494 | } | |
495 | ||
496 | if (si->signer || (flags & CMS_NOINTERN)) | |
497 | continue; | |
498 | ||
499 | for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) { | |
500 | cch = sk_CMS_CertificateChoices_value(certs, j); | |
501 | if (cch->type != 0) | |
502 | continue; | |
503 | x = cch->d.certificate; | |
504 | if (CMS_SignerInfo_cert_cmp(si, x) == 0) { | |
505 | CMS_SignerInfo_set1_signer_cert(si, x); | |
506 | ret++; | |
507 | break; | |
508 | } | |
509 | } | |
510 | } | |
511 | return ret; | |
512 | } | |
513 | ||
514 | void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, | |
515 | X509 **signer, X509_ALGOR **pdig, | |
516 | X509_ALGOR **psig) | |
517 | { | |
518 | if (pk) | |
519 | *pk = si->pkey; | |
520 | if (signer) | |
521 | *signer = si->signer; | |
522 | if (pdig) | |
523 | *pdig = si->digestAlgorithm; | |
524 | if (psig) | |
525 | *psig = si->signatureAlgorithm; | |
526 | } | |
8931b30d | 527 | |
da15c616 | 528 | ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si) |
0f113f3e MC |
529 | { |
530 | return si->signature; | |
531 | } | |
da15c616 | 532 | |
ff80280b | 533 | static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms, |
0f113f3e MC |
534 | CMS_SignerInfo *si, BIO *chain) |
535 | { | |
bfb0641f | 536 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e MC |
537 | int r = 0; |
538 | EVP_PKEY_CTX *pctx = NULL; | |
6e59a892 RL |
539 | |
540 | if (mctx == NULL) { | |
541 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); | |
542 | return 0; | |
543 | } | |
0f113f3e MC |
544 | |
545 | if (!si->pkey) { | |
546 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY); | |
22803581 | 547 | goto err; |
0f113f3e MC |
548 | } |
549 | ||
6e59a892 | 550 | if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm)) |
0f113f3e | 551 | goto err; |
0d4fb843 | 552 | /* Set SignerInfo algorithm details if we used custom parameter */ |
0f113f3e MC |
553 | if (si->pctx && !cms_sd_asn1_ctrl(si, 0)) |
554 | goto err; | |
555 | ||
556 | /* | |
557 | * If any signed attributes calculate and add messageDigest attribute | |
558 | */ | |
559 | ||
560 | if (CMS_signed_get_attr_count(si) >= 0) { | |
561 | ASN1_OBJECT *ctype = | |
562 | cms->d.signedData->encapContentInfo->eContentType; | |
563 | unsigned char md[EVP_MAX_MD_SIZE]; | |
564 | unsigned int mdlen; | |
6e59a892 | 565 | if (!EVP_DigestFinal_ex(mctx, md, &mdlen)) |
0f113f3e MC |
566 | goto err; |
567 | if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, | |
568 | V_ASN1_OCTET_STRING, md, mdlen)) | |
569 | goto err; | |
570 | /* Copy content type across */ | |
571 | if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType, | |
572 | V_ASN1_OBJECT, ctype, -1) <= 0) | |
573 | goto err; | |
574 | if (!CMS_SignerInfo_sign(si)) | |
575 | goto err; | |
576 | } else if (si->pctx) { | |
577 | unsigned char *sig; | |
578 | size_t siglen; | |
579 | unsigned char md[EVP_MAX_MD_SIZE]; | |
580 | unsigned int mdlen; | |
581 | pctx = si->pctx; | |
6e59a892 | 582 | if (!EVP_DigestFinal_ex(mctx, md, &mdlen)) |
0f113f3e MC |
583 | goto err; |
584 | siglen = EVP_PKEY_size(si->pkey); | |
585 | sig = OPENSSL_malloc(siglen); | |
90945fa3 | 586 | if (sig == NULL) { |
0f113f3e MC |
587 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); |
588 | goto err; | |
589 | } | |
590 | if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) { | |
591 | OPENSSL_free(sig); | |
592 | goto err; | |
593 | } | |
594 | ASN1_STRING_set0(si->signature, sig, siglen); | |
595 | } else { | |
596 | unsigned char *sig; | |
597 | unsigned int siglen; | |
598 | sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey)); | |
90945fa3 | 599 | if (sig == NULL) { |
0f113f3e MC |
600 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); |
601 | goto err; | |
602 | } | |
6e59a892 | 603 | if (!EVP_SignFinal(mctx, sig, &siglen, si->pkey)) { |
0f113f3e MC |
604 | CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR); |
605 | OPENSSL_free(sig); | |
606 | goto err; | |
607 | } | |
608 | ASN1_STRING_set0(si->signature, sig, siglen); | |
609 | } | |
610 | ||
611 | r = 1; | |
612 | ||
613 | err: | |
bfb0641f | 614 | EVP_MD_CTX_free(mctx); |
c5ba2d99 | 615 | EVP_PKEY_CTX_free(pctx); |
0f113f3e MC |
616 | return r; |
617 | ||
618 | } | |
8931b30d DSH |
619 | |
620 | int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain) | |
0f113f3e MC |
621 | { |
622 | STACK_OF(CMS_SignerInfo) *sinfos; | |
623 | CMS_SignerInfo *si; | |
624 | int i; | |
625 | sinfos = CMS_get0_SignerInfos(cms); | |
626 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
627 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
628 | if (!cms_SignerInfo_content_sign(cms, si, chain)) | |
629 | return 0; | |
630 | } | |
631 | cms->d.signedData->encapContentInfo->partial = 0; | |
632 | return 1; | |
633 | } | |
8931b30d DSH |
634 | |
635 | int CMS_SignerInfo_sign(CMS_SignerInfo *si) | |
0f113f3e | 636 | { |
6e59a892 | 637 | EVP_MD_CTX *mctx = si->mctx; |
0f113f3e MC |
638 | EVP_PKEY_CTX *pctx; |
639 | unsigned char *abuf = NULL; | |
640 | int alen; | |
641 | size_t siglen; | |
642 | const EVP_MD *md = NULL; | |
643 | ||
644 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
645 | if (md == NULL) | |
646 | return 0; | |
647 | ||
648 | if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) { | |
649 | if (!cms_add1_signingTime(si, NULL)) | |
650 | goto err; | |
651 | } | |
652 | ||
653 | if (si->pctx) | |
654 | pctx = si->pctx; | |
655 | else { | |
bfb0641f | 656 | EVP_MD_CTX_reset(mctx); |
0f113f3e MC |
657 | if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0) |
658 | goto err; | |
f7a21d85 | 659 | si->pctx = pctx; |
0f113f3e MC |
660 | } |
661 | ||
662 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
663 | EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) { | |
664 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
665 | goto err; | |
666 | } | |
667 | ||
668 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, | |
669 | ASN1_ITEM_rptr(CMS_Attributes_Sign)); | |
670 | if (!abuf) | |
671 | goto err; | |
672 | if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0) | |
673 | goto err; | |
674 | if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0) | |
675 | goto err; | |
676 | OPENSSL_free(abuf); | |
677 | abuf = OPENSSL_malloc(siglen); | |
90945fa3 | 678 | if (abuf == NULL) |
0f113f3e MC |
679 | goto err; |
680 | if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0) | |
681 | goto err; | |
682 | ||
683 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | |
684 | EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) { | |
685 | CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); | |
686 | goto err; | |
687 | } | |
688 | ||
bfb0641f | 689 | EVP_MD_CTX_reset(mctx); |
0f113f3e MC |
690 | |
691 | ASN1_STRING_set0(si->signature, abuf, siglen); | |
692 | ||
693 | return 1; | |
694 | ||
695 | err: | |
b548a1f1 | 696 | OPENSSL_free(abuf); |
bfb0641f | 697 | EVP_MD_CTX_reset(mctx); |
0f113f3e MC |
698 | return 0; |
699 | ||
700 | } | |
8931b30d DSH |
701 | |
702 | int CMS_SignerInfo_verify(CMS_SignerInfo *si) | |
0f113f3e | 703 | { |
6e59a892 | 704 | EVP_MD_CTX *mctx = NULL; |
0f113f3e MC |
705 | unsigned char *abuf = NULL; |
706 | int alen, r = -1; | |
707 | const EVP_MD *md = NULL; | |
708 | ||
709 | if (!si->pkey) { | |
710 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY); | |
711 | return -1; | |
712 | } | |
713 | ||
714 | md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); | |
715 | if (md == NULL) | |
716 | return -1; | |
6e59a892 | 717 | if (si->mctx == NULL) |
bfb0641f | 718 | si->mctx = EVP_MD_CTX_new(); |
6e59a892 | 719 | mctx = si->mctx; |
0f113f3e MC |
720 | if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0) |
721 | goto err; | |
722 | ||
723 | if (!cms_sd_asn1_ctrl(si, 1)) | |
724 | goto err; | |
725 | ||
726 | alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, | |
727 | ASN1_ITEM_rptr(CMS_Attributes_Verify)); | |
728 | if (!abuf) | |
729 | goto err; | |
730 | r = EVP_DigestVerifyUpdate(mctx, abuf, alen); | |
731 | OPENSSL_free(abuf); | |
732 | if (r <= 0) { | |
733 | r = -1; | |
734 | goto err; | |
735 | } | |
736 | r = EVP_DigestVerifyFinal(mctx, | |
737 | si->signature->data, si->signature->length); | |
738 | if (r <= 0) | |
739 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE); | |
740 | err: | |
bfb0641f | 741 | EVP_MD_CTX_reset(mctx); |
0f113f3e MC |
742 | return r; |
743 | } | |
8931b30d DSH |
744 | |
745 | /* Create a chain of digest BIOs from a CMS ContentInfo */ | |
746 | ||
747 | BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms) | |
0f113f3e MC |
748 | { |
749 | int i; | |
750 | CMS_SignedData *sd; | |
751 | BIO *chain = NULL; | |
752 | sd = cms_get0_signed(cms); | |
753 | if (!sd) | |
754 | return NULL; | |
755 | if (cms->d.signedData->encapContentInfo->partial) | |
756 | cms_sd_set_version(sd); | |
757 | for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { | |
758 | X509_ALGOR *digestAlgorithm; | |
759 | BIO *mdbio; | |
760 | digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i); | |
761 | mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm); | |
762 | if (!mdbio) | |
763 | goto err; | |
764 | if (chain) | |
765 | BIO_push(chain, mdbio); | |
766 | else | |
767 | chain = mdbio; | |
768 | } | |
769 | return chain; | |
770 | err: | |
ca3a82c3 | 771 | BIO_free_all(chain); |
0f113f3e MC |
772 | return NULL; |
773 | } | |
8931b30d DSH |
774 | |
775 | int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain) | |
0f113f3e MC |
776 | { |
777 | ASN1_OCTET_STRING *os = NULL; | |
bfb0641f | 778 | EVP_MD_CTX *mctx = EVP_MD_CTX_new(); |
0f113f3e MC |
779 | EVP_PKEY_CTX *pkctx = NULL; |
780 | int r = -1; | |
781 | unsigned char mval[EVP_MAX_MD_SIZE]; | |
782 | unsigned int mlen; | |
6e59a892 RL |
783 | |
784 | if (mctx == NULL) { | |
785 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, ERR_R_MALLOC_FAILURE); | |
786 | goto err; | |
787 | } | |
0f113f3e MC |
788 | /* If we have any signed attributes look for messageDigest value */ |
789 | if (CMS_signed_get_attr_count(si) >= 0) { | |
790 | os = CMS_signed_get0_data_by_OBJ(si, | |
791 | OBJ_nid2obj(NID_pkcs9_messageDigest), | |
792 | -3, V_ASN1_OCTET_STRING); | |
793 | if (!os) { | |
794 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
795 | CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); | |
796 | goto err; | |
797 | } | |
798 | } | |
799 | ||
6e59a892 | 800 | if (!cms_DigestAlgorithm_find_ctx(mctx, chain, si->digestAlgorithm)) |
0f113f3e MC |
801 | goto err; |
802 | ||
6e59a892 | 803 | if (EVP_DigestFinal_ex(mctx, mval, &mlen) <= 0) { |
0f113f3e MC |
804 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, |
805 | CMS_R_UNABLE_TO_FINALIZE_CONTEXT); | |
806 | goto err; | |
807 | } | |
808 | ||
809 | /* If messageDigest found compare it */ | |
810 | ||
811 | if (os) { | |
812 | if (mlen != (unsigned int)os->length) { | |
813 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
814 | CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH); | |
815 | goto err; | |
816 | } | |
817 | ||
818 | if (memcmp(mval, os->data, mlen)) { | |
819 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
820 | CMS_R_VERIFICATION_FAILURE); | |
821 | r = 0; | |
822 | } else | |
823 | r = 1; | |
824 | } else { | |
6e59a892 | 825 | const EVP_MD *md = EVP_MD_CTX_md(mctx); |
0f113f3e | 826 | pkctx = EVP_PKEY_CTX_new(si->pkey, NULL); |
90945fa3 MC |
827 | if (pkctx == NULL) |
828 | goto err; | |
0f113f3e MC |
829 | if (EVP_PKEY_verify_init(pkctx) <= 0) |
830 | goto err; | |
831 | if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0) | |
832 | goto err; | |
833 | si->pctx = pkctx; | |
834 | if (!cms_sd_asn1_ctrl(si, 1)) | |
835 | goto err; | |
836 | r = EVP_PKEY_verify(pkctx, si->signature->data, | |
837 | si->signature->length, mval, mlen); | |
838 | if (r <= 0) { | |
839 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, | |
840 | CMS_R_VERIFICATION_FAILURE); | |
841 | r = 0; | |
842 | } | |
843 | } | |
844 | ||
845 | err: | |
c5ba2d99 | 846 | EVP_PKEY_CTX_free(pkctx); |
bfb0641f | 847 | EVP_MD_CTX_free(mctx); |
0f113f3e MC |
848 | return r; |
849 | ||
850 | } | |
8931b30d DSH |
851 | |
852 | int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs) | |
0f113f3e MC |
853 | { |
854 | unsigned char *smder = NULL; | |
855 | int smderlen, r; | |
856 | smderlen = i2d_X509_ALGORS(algs, &smder); | |
857 | if (smderlen <= 0) | |
858 | return 0; | |
859 | r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities, | |
860 | V_ASN1_SEQUENCE, smder, smderlen); | |
861 | OPENSSL_free(smder); | |
862 | return r; | |
863 | } | |
8931b30d DSH |
864 | |
865 | int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, | |
0f113f3e MC |
866 | int algnid, int keysize) |
867 | { | |
868 | X509_ALGOR *alg; | |
869 | ASN1_INTEGER *key = NULL; | |
870 | if (keysize > 0) { | |
871 | key = ASN1_INTEGER_new(); | |
90945fa3 | 872 | if (key == NULL || !ASN1_INTEGER_set(key, keysize)) |
0f113f3e MC |
873 | return 0; |
874 | } | |
875 | alg = X509_ALGOR_new(); | |
90945fa3 | 876 | if (alg == NULL) { |
2ace7450 | 877 | ASN1_INTEGER_free(key); |
0f113f3e MC |
878 | return 0; |
879 | } | |
880 | ||
881 | X509_ALGOR_set0(alg, OBJ_nid2obj(algnid), | |
882 | key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key); | |
90945fa3 | 883 | if (*algs == NULL) |
0f113f3e | 884 | *algs = sk_X509_ALGOR_new_null(); |
90945fa3 | 885 | if (*algs == NULL || !sk_X509_ALGOR_push(*algs, alg)) { |
0f113f3e MC |
886 | X509_ALGOR_free(alg); |
887 | return 0; | |
888 | } | |
889 | return 1; | |
890 | } | |
8931b30d DSH |
891 | |
892 | /* Check to see if a cipher exists and if so add S/MIME capabilities */ | |
893 | ||
894 | static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
0f113f3e MC |
895 | { |
896 | if (EVP_get_cipherbynid(nid)) | |
897 | return CMS_add_simple_smimecap(sk, nid, arg); | |
898 | return 1; | |
899 | } | |
8931b30d DSH |
900 | |
901 | static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) | |
0f113f3e MC |
902 | { |
903 | if (EVP_get_digestbynid(nid)) | |
904 | return CMS_add_simple_smimecap(sk, nid, arg); | |
905 | return 1; | |
906 | } | |
8931b30d DSH |
907 | |
908 | int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap) | |
0f113f3e MC |
909 | { |
910 | if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1) | |
c58f3e42 MC |
911 | || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1) |
912 | || !cms_add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1) | |
0f113f3e MC |
913 | || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1) |
914 | || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) | |
915 | || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1) | |
916 | || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1) | |
917 | || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) | |
918 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128) | |
919 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64) | |
920 | || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1) | |
921 | || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40)) | |
922 | return 0; | |
923 | return 1; | |
924 | } |