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0f113f3e MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
8931b30d DSH |
3 | * project. |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2008 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
8931b30d DSH |
14 | * |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | */ | |
53 | ||
b39fc560 | 54 | #include "internal/cryptlib.h" |
8931b30d DSH |
55 | #include <openssl/asn1t.h> |
56 | #include <openssl/x509.h> | |
57 | #include <openssl/x509v3.h> | |
58 | #include <openssl/err.h> | |
59 | #include <openssl/cms.h> | |
60 | #include "cms_lcl.h" | |
5fe736e5 | 61 | #include "internal/asn1_int.h" |
8931b30d | 62 | |
cd30f03a | 63 | static BIO *cms_get_text_bio(BIO *out, unsigned int flags) |
0f113f3e MC |
64 | { |
65 | BIO *rbio; | |
66 | if (out == NULL) | |
67 | rbio = BIO_new(BIO_s_null()); | |
68 | else if (flags & CMS_TEXT) { | |
69 | rbio = BIO_new(BIO_s_mem()); | |
70 | BIO_set_mem_eof_return(rbio, 0); | |
71 | } else | |
72 | rbio = out; | |
73 | return rbio; | |
74 | } | |
cd30f03a DSH |
75 | |
76 | static int cms_copy_content(BIO *out, BIO *in, unsigned int flags) | |
0f113f3e MC |
77 | { |
78 | unsigned char buf[4096]; | |
79 | int r = 0, i; | |
80 | BIO *tmpout; | |
81 | ||
82 | tmpout = cms_get_text_bio(out, flags); | |
83 | ||
90945fa3 | 84 | if (tmpout == NULL) { |
0f113f3e MC |
85 | CMSerr(CMS_F_CMS_COPY_CONTENT, ERR_R_MALLOC_FAILURE); |
86 | goto err; | |
87 | } | |
88 | ||
89 | /* Read all content through chain to process digest, decrypt etc */ | |
90 | for (;;) { | |
91 | i = BIO_read(in, buf, sizeof(buf)); | |
92 | if (i <= 0) { | |
93 | if (BIO_method_type(in) == BIO_TYPE_CIPHER) { | |
94 | if (!BIO_get_cipher_status(in)) | |
95 | goto err; | |
96 | } | |
97 | if (i < 0) | |
98 | goto err; | |
99 | break; | |
100 | } | |
101 | ||
102 | if (tmpout && (BIO_write(tmpout, buf, i) != i)) | |
103 | goto err; | |
104 | } | |
105 | ||
106 | if (flags & CMS_TEXT) { | |
107 | if (!SMIME_text(tmpout, out)) { | |
108 | CMSerr(CMS_F_CMS_COPY_CONTENT, CMS_R_SMIME_TEXT_ERROR); | |
109 | goto err; | |
110 | } | |
111 | } | |
112 | ||
113 | r = 1; | |
114 | ||
115 | err: | |
ca3a82c3 | 116 | if (tmpout != out) |
0f113f3e MC |
117 | BIO_free(tmpout); |
118 | return r; | |
119 | ||
120 | } | |
8931b30d | 121 | |
4f1aa191 | 122 | static int check_content(CMS_ContentInfo *cms) |
0f113f3e MC |
123 | { |
124 | ASN1_OCTET_STRING **pos = CMS_get0_content(cms); | |
125 | if (!pos || !*pos) { | |
126 | CMSerr(CMS_F_CHECK_CONTENT, CMS_R_NO_CONTENT); | |
127 | return 0; | |
128 | } | |
129 | return 1; | |
130 | } | |
4f1aa191 | 131 | |
852bd350 | 132 | static void do_free_upto(BIO *f, BIO *upto) |
0f113f3e MC |
133 | { |
134 | if (upto) { | |
135 | BIO *tbio; | |
136 | do { | |
137 | tbio = BIO_pop(f); | |
138 | BIO_free(f); | |
139 | f = tbio; | |
140 | } | |
141 | while (f && f != upto); | |
142 | } else | |
143 | BIO_free_all(f); | |
144 | } | |
852bd350 | 145 | |
8931b30d | 146 | int CMS_data(CMS_ContentInfo *cms, BIO *out, unsigned int flags) |
0f113f3e MC |
147 | { |
148 | BIO *cont; | |
149 | int r; | |
150 | if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_data) { | |
151 | CMSerr(CMS_F_CMS_DATA, CMS_R_TYPE_NOT_DATA); | |
152 | return 0; | |
153 | } | |
154 | cont = CMS_dataInit(cms, NULL); | |
155 | if (!cont) | |
156 | return 0; | |
157 | r = cms_copy_content(out, cont, flags); | |
158 | BIO_free_all(cont); | |
159 | return r; | |
160 | } | |
8931b30d DSH |
161 | |
162 | CMS_ContentInfo *CMS_data_create(BIO *in, unsigned int flags) | |
0f113f3e MC |
163 | { |
164 | CMS_ContentInfo *cms; | |
165 | cms = cms_Data_create(); | |
166 | if (!cms) | |
167 | return NULL; | |
8931b30d | 168 | |
0f113f3e MC |
169 | if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
170 | return cms; | |
8931b30d | 171 | |
0f113f3e | 172 | CMS_ContentInfo_free(cms); |
8931b30d | 173 | |
0f113f3e MC |
174 | return NULL; |
175 | } | |
8931b30d DSH |
176 | |
177 | int CMS_digest_verify(CMS_ContentInfo *cms, BIO *dcont, BIO *out, | |
0f113f3e MC |
178 | unsigned int flags) |
179 | { | |
180 | BIO *cont; | |
181 | int r; | |
182 | if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_digest) { | |
183 | CMSerr(CMS_F_CMS_DIGEST_VERIFY, CMS_R_TYPE_NOT_DIGESTED_DATA); | |
184 | return 0; | |
185 | } | |
186 | ||
187 | if (!dcont && !check_content(cms)) | |
188 | return 0; | |
189 | ||
190 | cont = CMS_dataInit(cms, dcont); | |
191 | if (!cont) | |
192 | return 0; | |
193 | r = cms_copy_content(out, cont, flags); | |
194 | if (r) | |
195 | r = cms_DigestedData_do_final(cms, cont, 1); | |
196 | do_free_upto(cont, dcont); | |
197 | return r; | |
198 | } | |
8931b30d DSH |
199 | |
200 | CMS_ContentInfo *CMS_digest_create(BIO *in, const EVP_MD *md, | |
0f113f3e MC |
201 | unsigned int flags) |
202 | { | |
203 | CMS_ContentInfo *cms; | |
204 | if (!md) | |
205 | md = EVP_sha1(); | |
206 | cms = cms_DigestedData_create(md); | |
207 | if (!cms) | |
208 | return NULL; | |
8931b30d | 209 | |
0f113f3e MC |
210 | if (!(flags & CMS_DETACHED)) |
211 | CMS_set_detached(cms, 0); | |
8931b30d | 212 | |
0f113f3e MC |
213 | if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
214 | return cms; | |
8931b30d | 215 | |
0f113f3e MC |
216 | CMS_ContentInfo_free(cms); |
217 | return NULL; | |
218 | } | |
8931b30d | 219 | |
b820455c | 220 | int CMS_EncryptedData_decrypt(CMS_ContentInfo *cms, |
0f113f3e MC |
221 | const unsigned char *key, size_t keylen, |
222 | BIO *dcont, BIO *out, unsigned int flags) | |
223 | { | |
224 | BIO *cont; | |
225 | int r; | |
226 | if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_encrypted) { | |
227 | CMSerr(CMS_F_CMS_ENCRYPTEDDATA_DECRYPT, | |
228 | CMS_R_TYPE_NOT_ENCRYPTED_DATA); | |
229 | return 0; | |
230 | } | |
231 | ||
232 | if (!dcont && !check_content(cms)) | |
233 | return 0; | |
234 | ||
235 | if (CMS_EncryptedData_set1_key(cms, NULL, key, keylen) <= 0) | |
236 | return 0; | |
237 | cont = CMS_dataInit(cms, dcont); | |
238 | if (!cont) | |
239 | return 0; | |
240 | r = cms_copy_content(out, cont, flags); | |
241 | do_free_upto(cont, dcont); | |
242 | return r; | |
243 | } | |
b820455c | 244 | |
320bfc1b | 245 | CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in, const EVP_CIPHER *cipher, |
0f113f3e MC |
246 | const unsigned char *key, |
247 | size_t keylen, unsigned int flags) | |
248 | { | |
249 | CMS_ContentInfo *cms; | |
250 | if (!cipher) { | |
251 | CMSerr(CMS_F_CMS_ENCRYPTEDDATA_ENCRYPT, CMS_R_NO_CIPHER); | |
252 | return NULL; | |
253 | } | |
254 | cms = CMS_ContentInfo_new(); | |
90945fa3 | 255 | if (cms == NULL) |
0f113f3e MC |
256 | return NULL; |
257 | if (!CMS_EncryptedData_set1_key(cms, cipher, key, keylen)) | |
258 | return NULL; | |
259 | ||
260 | if (!(flags & CMS_DETACHED)) | |
261 | CMS_set_detached(cms, 0); | |
262 | ||
263 | if ((flags & (CMS_STREAM | CMS_PARTIAL)) | |
264 | || CMS_final(cms, in, NULL, flags)) | |
265 | return cms; | |
266 | ||
267 | CMS_ContentInfo_free(cms); | |
268 | return NULL; | |
269 | } | |
320bfc1b | 270 | |
8931b30d | 271 | static int cms_signerinfo_verify_cert(CMS_SignerInfo *si, |
0f113f3e MC |
272 | X509_STORE *store, |
273 | STACK_OF(X509) *certs, | |
274 | STACK_OF(X509_CRL) *crls, | |
275 | unsigned int flags) | |
276 | { | |
277 | X509_STORE_CTX ctx; | |
278 | X509 *signer; | |
279 | int i, j, r = 0; | |
280 | CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL); | |
281 | if (!X509_STORE_CTX_init(&ctx, store, signer, certs)) { | |
282 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, CMS_R_STORE_INIT_ERROR); | |
283 | goto err; | |
284 | } | |
285 | X509_STORE_CTX_set_default(&ctx, "smime_sign"); | |
286 | if (crls) | |
287 | X509_STORE_CTX_set0_crls(&ctx, crls); | |
288 | ||
289 | i = X509_verify_cert(&ctx); | |
290 | if (i <= 0) { | |
291 | j = X509_STORE_CTX_get_error(&ctx); | |
292 | CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, | |
293 | CMS_R_CERTIFICATE_VERIFY_ERROR); | |
294 | ERR_add_error_data(2, "Verify error:", | |
295 | X509_verify_cert_error_string(j)); | |
296 | goto err; | |
297 | } | |
298 | r = 1; | |
299 | err: | |
300 | X509_STORE_CTX_cleanup(&ctx); | |
301 | return r; | |
302 | ||
303 | } | |
8931b30d DSH |
304 | |
305 | int CMS_verify(CMS_ContentInfo *cms, STACK_OF(X509) *certs, | |
0f113f3e MC |
306 | X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags) |
307 | { | |
308 | CMS_SignerInfo *si; | |
309 | STACK_OF(CMS_SignerInfo) *sinfos; | |
310 | STACK_OF(X509) *cms_certs = NULL; | |
311 | STACK_OF(X509_CRL) *crls = NULL; | |
312 | X509 *signer; | |
313 | int i, scount = 0, ret = 0; | |
314 | BIO *cmsbio = NULL, *tmpin = NULL, *tmpout = NULL; | |
315 | ||
316 | if (!dcont && !check_content(cms)) | |
317 | return 0; | |
318 | if (dcont && !(flags & CMS_BINARY)) { | |
319 | const ASN1_OBJECT *coid = CMS_get0_eContentType(cms); | |
320 | if (OBJ_obj2nid(coid) == NID_id_ct_asciiTextWithCRLF) | |
321 | flags |= CMS_ASCIICRLF; | |
322 | } | |
323 | ||
324 | /* Attempt to find all signer certificates */ | |
325 | ||
326 | sinfos = CMS_get0_SignerInfos(cms); | |
327 | ||
328 | if (sk_CMS_SignerInfo_num(sinfos) <= 0) { | |
329 | CMSerr(CMS_F_CMS_VERIFY, CMS_R_NO_SIGNERS); | |
330 | goto err; | |
331 | } | |
332 | ||
333 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
334 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
335 | CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL); | |
336 | if (signer) | |
337 | scount++; | |
338 | } | |
339 | ||
340 | if (scount != sk_CMS_SignerInfo_num(sinfos)) | |
341 | scount += CMS_set1_signers_certs(cms, certs, flags); | |
342 | ||
343 | if (scount != sk_CMS_SignerInfo_num(sinfos)) { | |
344 | CMSerr(CMS_F_CMS_VERIFY, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND); | |
345 | goto err; | |
346 | } | |
347 | ||
348 | /* Attempt to verify all signers certs */ | |
349 | ||
350 | if (!(flags & CMS_NO_SIGNER_CERT_VERIFY)) { | |
351 | cms_certs = CMS_get1_certs(cms); | |
352 | if (!(flags & CMS_NOCRL)) | |
353 | crls = CMS_get1_crls(cms); | |
354 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
355 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
356 | if (!cms_signerinfo_verify_cert(si, store, | |
357 | cms_certs, crls, flags)) | |
358 | goto err; | |
359 | } | |
360 | } | |
361 | ||
362 | /* Attempt to verify all SignerInfo signed attribute signatures */ | |
363 | ||
364 | if (!(flags & CMS_NO_ATTR_VERIFY)) { | |
365 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
366 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
367 | if (CMS_signed_get_attr_count(si) < 0) | |
368 | continue; | |
369 | if (CMS_SignerInfo_verify(si) <= 0) | |
370 | goto err; | |
371 | } | |
372 | } | |
373 | ||
374 | /* | |
375 | * Performance optimization: if the content is a memory BIO then store | |
376 | * its contents in a temporary read only memory BIO. This avoids | |
377 | * potentially large numbers of slow copies of data which will occur when | |
378 | * reading from a read write memory BIO when signatures are calculated. | |
379 | */ | |
380 | ||
381 | if (dcont && (BIO_method_type(dcont) == BIO_TYPE_MEM)) { | |
382 | char *ptr; | |
383 | long len; | |
384 | len = BIO_get_mem_data(dcont, &ptr); | |
385 | tmpin = BIO_new_mem_buf(ptr, len); | |
386 | if (tmpin == NULL) { | |
387 | CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE); | |
7fba8407 | 388 | goto err2; |
0f113f3e MC |
389 | } |
390 | } else | |
391 | tmpin = dcont; | |
392 | /* | |
393 | * If not binary mode and detached generate digests by *writing* through | |
394 | * the BIO. That makes it possible to canonicalise the input. | |
395 | */ | |
396 | if (!(flags & SMIME_BINARY) && dcont) { | |
397 | /* | |
398 | * Create output BIO so we can either handle text or to ensure | |
399 | * included content doesn't override detached content. | |
400 | */ | |
401 | tmpout = cms_get_text_bio(out, flags); | |
402 | if (!tmpout) { | |
403 | CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE); | |
404 | goto err; | |
405 | } | |
406 | cmsbio = CMS_dataInit(cms, tmpout); | |
407 | if (!cmsbio) | |
408 | goto err; | |
409 | /* | |
410 | * Don't use SMIME_TEXT for verify: it adds headers and we want to | |
411 | * remove them. | |
412 | */ | |
413 | SMIME_crlf_copy(dcont, cmsbio, flags & ~SMIME_TEXT); | |
414 | ||
415 | if (flags & CMS_TEXT) { | |
416 | if (!SMIME_text(tmpout, out)) { | |
417 | CMSerr(CMS_F_CMS_VERIFY, CMS_R_SMIME_TEXT_ERROR); | |
418 | goto err; | |
419 | } | |
420 | } | |
421 | } else { | |
422 | cmsbio = CMS_dataInit(cms, tmpin); | |
423 | if (!cmsbio) | |
424 | goto err; | |
425 | ||
426 | if (!cms_copy_content(out, cmsbio, flags)) | |
427 | goto err; | |
428 | ||
429 | } | |
430 | if (!(flags & CMS_NO_CONTENT_VERIFY)) { | |
431 | for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { | |
432 | si = sk_CMS_SignerInfo_value(sinfos, i); | |
433 | if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) { | |
434 | CMSerr(CMS_F_CMS_VERIFY, CMS_R_CONTENT_VERIFY_ERROR); | |
435 | goto err; | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
440 | ret = 1; | |
441 | ||
442 | err: | |
443 | if (!(flags & SMIME_BINARY) && dcont) { | |
444 | do_free_upto(cmsbio, tmpout); | |
445 | if (tmpin != dcont) | |
446 | BIO_free(tmpin); | |
447 | } else { | |
0f113f3e MC |
448 | if (dcont && (tmpin == dcont)) |
449 | do_free_upto(cmsbio, dcont); | |
450 | else | |
451 | BIO_free_all(cmsbio); | |
452 | } | |
453 | ||
ca3a82c3 | 454 | if (out != tmpout) |
0f113f3e MC |
455 | BIO_free_all(tmpout); |
456 | ||
7fba8407 | 457 | err2: |
222561fe RS |
458 | sk_X509_pop_free(cms_certs, X509_free); |
459 | sk_X509_CRL_pop_free(crls, X509_CRL_free); | |
0f113f3e MC |
460 | |
461 | return ret; | |
462 | } | |
8931b30d | 463 | |
eb9d8d8c | 464 | int CMS_verify_receipt(CMS_ContentInfo *rcms, CMS_ContentInfo *ocms, |
0f113f3e MC |
465 | STACK_OF(X509) *certs, |
466 | X509_STORE *store, unsigned int flags) | |
467 | { | |
468 | int r; | |
469 | flags &= ~(CMS_DETACHED | CMS_TEXT); | |
470 | r = CMS_verify(rcms, certs, store, NULL, NULL, flags); | |
471 | if (r <= 0) | |
472 | return r; | |
473 | return cms_Receipt_verify(rcms, ocms); | |
474 | } | |
475 | ||
476 | CMS_ContentInfo *CMS_sign(X509 *signcert, EVP_PKEY *pkey, | |
477 | STACK_OF(X509) *certs, BIO *data, | |
478 | unsigned int flags) | |
479 | { | |
480 | CMS_ContentInfo *cms; | |
481 | int i; | |
482 | ||
483 | cms = CMS_ContentInfo_new(); | |
90945fa3 | 484 | if (cms == NULL || !CMS_SignedData_init(cms)) |
0f113f3e MC |
485 | goto merr; |
486 | if (flags & CMS_ASCIICRLF | |
487 | && !CMS_set1_eContentType(cms, | |
488 | OBJ_nid2obj(NID_id_ct_asciiTextWithCRLF))) | |
489 | goto err; | |
490 | ||
491 | if (pkey && !CMS_add1_signer(cms, signcert, pkey, NULL, flags)) { | |
492 | CMSerr(CMS_F_CMS_SIGN, CMS_R_ADD_SIGNER_ERROR); | |
493 | goto err; | |
494 | } | |
495 | ||
496 | for (i = 0; i < sk_X509_num(certs); i++) { | |
497 | X509 *x = sk_X509_value(certs, i); | |
498 | if (!CMS_add1_cert(cms, x)) | |
499 | goto merr; | |
500 | } | |
501 | ||
502 | if (!(flags & CMS_DETACHED)) | |
503 | CMS_set_detached(cms, 0); | |
504 | ||
505 | if ((flags & (CMS_STREAM | CMS_PARTIAL)) | |
506 | || CMS_final(cms, data, NULL, flags)) | |
507 | return cms; | |
508 | else | |
509 | goto err; | |
510 | ||
511 | merr: | |
512 | CMSerr(CMS_F_CMS_SIGN, ERR_R_MALLOC_FAILURE); | |
513 | ||
514 | err: | |
25aaa98a | 515 | CMS_ContentInfo_free(cms); |
0f113f3e MC |
516 | return NULL; |
517 | } | |
8931b30d | 518 | |
36309aa2 | 519 | CMS_ContentInfo *CMS_sign_receipt(CMS_SignerInfo *si, |
0f113f3e MC |
520 | X509 *signcert, EVP_PKEY *pkey, |
521 | STACK_OF(X509) *certs, unsigned int flags) | |
522 | { | |
523 | CMS_SignerInfo *rct_si; | |
524 | CMS_ContentInfo *cms = NULL; | |
525 | ASN1_OCTET_STRING **pos, *os; | |
526 | BIO *rct_cont = NULL; | |
527 | int r = 0; | |
528 | ||
529 | flags &= ~(CMS_STREAM | CMS_TEXT); | |
530 | /* Not really detached but avoids content being allocated */ | |
531 | flags |= CMS_PARTIAL | CMS_BINARY | CMS_DETACHED; | |
532 | if (!pkey || !signcert) { | |
533 | CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_NO_KEY_OR_CERT); | |
534 | return NULL; | |
535 | } | |
536 | ||
537 | /* Initialize signed data */ | |
538 | ||
539 | cms = CMS_sign(NULL, NULL, certs, NULL, flags); | |
540 | if (!cms) | |
541 | goto err; | |
542 | ||
543 | /* Set inner content type to signed receipt */ | |
544 | if (!CMS_set1_eContentType(cms, OBJ_nid2obj(NID_id_smime_ct_receipt))) | |
545 | goto err; | |
546 | ||
547 | rct_si = CMS_add1_signer(cms, signcert, pkey, NULL, flags); | |
548 | if (!rct_si) { | |
549 | CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_ADD_SIGNER_ERROR); | |
550 | goto err; | |
551 | } | |
552 | ||
553 | os = cms_encode_Receipt(si); | |
554 | ||
555 | if (!os) | |
556 | goto err; | |
557 | ||
558 | /* Set content to digest */ | |
559 | rct_cont = BIO_new_mem_buf(os->data, os->length); | |
560 | if (!rct_cont) | |
561 | goto err; | |
562 | ||
563 | /* Add msgSigDigest attribute */ | |
564 | ||
565 | if (!cms_msgSigDigest_add1(rct_si, si)) | |
566 | goto err; | |
567 | ||
568 | /* Finalize structure */ | |
569 | if (!CMS_final(cms, rct_cont, NULL, flags)) | |
570 | goto err; | |
571 | ||
572 | /* Set embedded content */ | |
573 | pos = CMS_get0_content(cms); | |
574 | *pos = os; | |
575 | ||
576 | r = 1; | |
577 | ||
578 | err: | |
ca3a82c3 | 579 | BIO_free(rct_cont); |
0f113f3e MC |
580 | if (r) |
581 | return cms; | |
582 | CMS_ContentInfo_free(cms); | |
583 | return NULL; | |
584 | ||
585 | } | |
36309aa2 | 586 | |
761ffa72 | 587 | CMS_ContentInfo *CMS_encrypt(STACK_OF(X509) *certs, BIO *data, |
0f113f3e MC |
588 | const EVP_CIPHER *cipher, unsigned int flags) |
589 | { | |
590 | CMS_ContentInfo *cms; | |
591 | int i; | |
592 | X509 *recip; | |
593 | cms = CMS_EnvelopedData_create(cipher); | |
594 | if (!cms) | |
595 | goto merr; | |
596 | for (i = 0; i < sk_X509_num(certs); i++) { | |
597 | recip = sk_X509_value(certs, i); | |
598 | if (!CMS_add1_recipient_cert(cms, recip, flags)) { | |
599 | CMSerr(CMS_F_CMS_ENCRYPT, CMS_R_RECIPIENT_ERROR); | |
600 | goto err; | |
601 | } | |
602 | } | |
603 | ||
604 | if (!(flags & CMS_DETACHED)) | |
605 | CMS_set_detached(cms, 0); | |
606 | ||
607 | if ((flags & (CMS_STREAM | CMS_PARTIAL)) | |
608 | || CMS_final(cms, data, NULL, flags)) | |
609 | return cms; | |
610 | else | |
611 | goto err; | |
612 | ||
613 | merr: | |
614 | CMSerr(CMS_F_CMS_ENCRYPT, ERR_R_MALLOC_FAILURE); | |
615 | err: | |
25aaa98a | 616 | CMS_ContentInfo_free(cms); |
0f113f3e MC |
617 | return NULL; |
618 | } | |
eeb9cdfc | 619 | |
17c2764d | 620 | static int cms_kari_set1_pkey(CMS_ContentInfo *cms, CMS_RecipientInfo *ri, |
0f113f3e MC |
621 | EVP_PKEY *pk, X509 *cert) |
622 | { | |
623 | int i; | |
624 | STACK_OF(CMS_RecipientEncryptedKey) *reks; | |
625 | CMS_RecipientEncryptedKey *rek; | |
626 | reks = CMS_RecipientInfo_kari_get0_reks(ri); | |
627 | if (!cert) | |
628 | return 0; | |
629 | for (i = 0; i < sk_CMS_RecipientEncryptedKey_num(reks); i++) { | |
630 | int rv; | |
631 | rek = sk_CMS_RecipientEncryptedKey_value(reks, i); | |
632 | if (CMS_RecipientEncryptedKey_cert_cmp(rek, cert)) | |
633 | continue; | |
634 | CMS_RecipientInfo_kari_set0_pkey(ri, pk); | |
635 | rv = CMS_RecipientInfo_kari_decrypt(cms, ri, rek); | |
636 | CMS_RecipientInfo_kari_set0_pkey(ri, NULL); | |
637 | if (rv > 0) | |
638 | return 1; | |
639 | return -1; | |
640 | } | |
641 | return 0; | |
642 | } | |
17c2764d | 643 | |
eeb9cdfc | 644 | int CMS_decrypt_set1_pkey(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert) |
0f113f3e MC |
645 | { |
646 | STACK_OF(CMS_RecipientInfo) *ris; | |
647 | CMS_RecipientInfo *ri; | |
648 | int i, r, ri_type; | |
649 | int debug = 0, match_ri = 0; | |
650 | ris = CMS_get0_RecipientInfos(cms); | |
651 | if (ris) | |
652 | debug = cms->d.envelopedData->encryptedContentInfo->debug; | |
653 | ri_type = cms_pkey_get_ri_type(pk); | |
654 | if (ri_type == CMS_RECIPINFO_NONE) { | |
655 | CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, | |
656 | CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); | |
657 | return 0; | |
658 | } | |
659 | ||
660 | for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { | |
661 | ri = sk_CMS_RecipientInfo_value(ris, i); | |
662 | if (CMS_RecipientInfo_type(ri) != ri_type) | |
663 | continue; | |
664 | match_ri = 1; | |
665 | if (ri_type == CMS_RECIPINFO_AGREE) { | |
666 | r = cms_kari_set1_pkey(cms, ri, pk, cert); | |
667 | if (r > 0) | |
668 | return 1; | |
669 | if (r < 0) | |
670 | return 0; | |
671 | } | |
672 | /* | |
673 | * If we have a cert try matching RecipientInfo otherwise try them | |
674 | * all. | |
675 | */ | |
676 | else if (!cert || !CMS_RecipientInfo_ktri_cert_cmp(ri, cert)) { | |
677 | CMS_RecipientInfo_set0_pkey(ri, pk); | |
678 | r = CMS_RecipientInfo_decrypt(cms, ri); | |
679 | CMS_RecipientInfo_set0_pkey(ri, NULL); | |
680 | if (cert) { | |
681 | /* | |
682 | * If not debugging clear any error and return success to | |
683 | * avoid leaking of information useful to MMA | |
684 | */ | |
685 | if (!debug) { | |
686 | ERR_clear_error(); | |
687 | return 1; | |
688 | } | |
689 | if (r > 0) | |
690 | return 1; | |
691 | CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_DECRYPT_ERROR); | |
692 | return 0; | |
693 | } | |
694 | /* | |
695 | * If no cert and not debugging don't leave loop after first | |
696 | * successful decrypt. Always attempt to decrypt all recipients | |
697 | * to avoid leaking timing of a successful decrypt. | |
698 | */ | |
699 | else if (r > 0 && debug) | |
700 | return 1; | |
701 | } | |
702 | } | |
703 | /* If no cert and not debugging always return success */ | |
704 | if (match_ri && !cert && !debug) { | |
705 | ERR_clear_error(); | |
706 | return 1; | |
707 | } | |
708 | ||
709 | CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_NO_MATCHING_RECIPIENT); | |
710 | return 0; | |
711 | ||
712 | } | |
713 | ||
714 | int CMS_decrypt_set1_key(CMS_ContentInfo *cms, | |
715 | unsigned char *key, size_t keylen, | |
716 | unsigned char *id, size_t idlen) | |
717 | { | |
718 | STACK_OF(CMS_RecipientInfo) *ris; | |
719 | CMS_RecipientInfo *ri; | |
720 | int i, r; | |
721 | ris = CMS_get0_RecipientInfos(cms); | |
722 | for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { | |
723 | ri = sk_CMS_RecipientInfo_value(ris, i); | |
724 | if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_KEK) | |
725 | continue; | |
726 | ||
727 | /* | |
728 | * If we have an id try matching RecipientInfo otherwise try them | |
729 | * all. | |
730 | */ | |
731 | if (!id || (CMS_RecipientInfo_kekri_id_cmp(ri, id, idlen) == 0)) { | |
732 | CMS_RecipientInfo_set0_key(ri, key, keylen); | |
733 | r = CMS_RecipientInfo_decrypt(cms, ri); | |
734 | CMS_RecipientInfo_set0_key(ri, NULL, 0); | |
735 | if (r > 0) | |
736 | return 1; | |
737 | if (id) { | |
738 | CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_DECRYPT_ERROR); | |
739 | return 0; | |
740 | } | |
741 | ERR_clear_error(); | |
742 | } | |
743 | } | |
744 | ||
745 | CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_NO_MATCHING_RECIPIENT); | |
746 | return 0; | |
747 | ||
748 | } | |
749 | ||
750 | int CMS_decrypt_set1_password(CMS_ContentInfo *cms, | |
751 | unsigned char *pass, ossl_ssize_t passlen) | |
752 | { | |
753 | STACK_OF(CMS_RecipientInfo) *ris; | |
754 | CMS_RecipientInfo *ri; | |
755 | int i, r; | |
756 | ris = CMS_get0_RecipientInfos(cms); | |
757 | for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) { | |
758 | ri = sk_CMS_RecipientInfo_value(ris, i); | |
759 | if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_PASS) | |
760 | continue; | |
761 | CMS_RecipientInfo_set0_password(ri, pass, passlen); | |
762 | r = CMS_RecipientInfo_decrypt(cms, ri); | |
763 | CMS_RecipientInfo_set0_password(ri, NULL, 0); | |
764 | if (r > 0) | |
765 | return 1; | |
766 | } | |
767 | ||
768 | CMSerr(CMS_F_CMS_DECRYPT_SET1_PASSWORD, CMS_R_NO_MATCHING_RECIPIENT); | |
769 | return 0; | |
770 | ||
771 | } | |
772 | ||
4f1aa191 | 773 | int CMS_decrypt(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert, |
0f113f3e MC |
774 | BIO *dcont, BIO *out, unsigned int flags) |
775 | { | |
776 | int r; | |
777 | BIO *cont; | |
778 | if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_enveloped) { | |
779 | CMSerr(CMS_F_CMS_DECRYPT, CMS_R_TYPE_NOT_ENVELOPED_DATA); | |
780 | return 0; | |
781 | } | |
782 | if (!dcont && !check_content(cms)) | |
783 | return 0; | |
784 | if (flags & CMS_DEBUG_DECRYPT) | |
785 | cms->d.envelopedData->encryptedContentInfo->debug = 1; | |
786 | else | |
787 | cms->d.envelopedData->encryptedContentInfo->debug = 0; | |
788 | if (!pk && !cert && !dcont && !out) | |
789 | return 1; | |
790 | if (pk && !CMS_decrypt_set1_pkey(cms, pk, cert)) | |
791 | return 0; | |
792 | cont = CMS_dataInit(cms, dcont); | |
793 | if (!cont) | |
794 | return 0; | |
795 | r = cms_copy_content(out, cont, flags); | |
796 | do_free_upto(cont, dcont); | |
797 | return r; | |
798 | } | |
8931b30d | 799 | |
e0fbd073 | 800 | int CMS_final(CMS_ContentInfo *cms, BIO *data, BIO *dcont, unsigned int flags) |
0f113f3e MC |
801 | { |
802 | BIO *cmsbio; | |
803 | int ret = 0; | |
75ebbd9a RS |
804 | |
805 | if ((cmsbio = CMS_dataInit(cms, dcont)) == NULL) { | |
a187e08d | 806 | CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_LIB); |
0f113f3e MC |
807 | return 0; |
808 | } | |
8931b30d | 809 | |
0f113f3e | 810 | SMIME_crlf_copy(data, cmsbio, flags); |
8931b30d | 811 | |
0f113f3e | 812 | (void)BIO_flush(cmsbio); |
8931b30d | 813 | |
0f113f3e MC |
814 | if (!CMS_dataFinal(cms, cmsbio)) { |
815 | CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_DATAFINAL_ERROR); | |
816 | goto err; | |
817 | } | |
8931b30d | 818 | |
0f113f3e | 819 | ret = 1; |
8931b30d | 820 | |
0f113f3e MC |
821 | err: |
822 | do_free_upto(cmsbio, dcont); | |
8931b30d | 823 | |
0f113f3e | 824 | return ret; |
8931b30d | 825 | |
0f113f3e | 826 | } |
8931b30d DSH |
827 | |
828 | #ifdef ZLIB | |
829 | ||
a5db50d0 | 830 | int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, |
0f113f3e MC |
831 | unsigned int flags) |
832 | { | |
833 | BIO *cont; | |
834 | int r; | |
835 | if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_id_smime_ct_compressedData) { | |
836 | CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_TYPE_NOT_COMPRESSED_DATA); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | if (!dcont && !check_content(cms)) | |
841 | return 0; | |
842 | ||
843 | cont = CMS_dataInit(cms, dcont); | |
844 | if (!cont) | |
845 | return 0; | |
846 | r = cms_copy_content(out, cont, flags); | |
847 | do_free_upto(cont, dcont); | |
848 | return r; | |
849 | } | |
8931b30d DSH |
850 | |
851 | CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags) | |
0f113f3e MC |
852 | { |
853 | CMS_ContentInfo *cms; | |
854 | if (comp_nid <= 0) | |
855 | comp_nid = NID_zlib_compression; | |
856 | cms = cms_CompressedData_create(comp_nid); | |
857 | if (!cms) | |
858 | return NULL; | |
8931b30d | 859 | |
0f113f3e MC |
860 | if (!(flags & CMS_DETACHED)) |
861 | CMS_set_detached(cms, 0); | |
8931b30d | 862 | |
0f113f3e MC |
863 | if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags)) |
864 | return cms; | |
8931b30d | 865 | |
0f113f3e MC |
866 | CMS_ContentInfo_free(cms); |
867 | return NULL; | |
868 | } | |
8931b30d DSH |
869 | |
870 | #else | |
871 | ||
872 | int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, | |
0f113f3e MC |
873 | unsigned int flags) |
874 | { | |
875 | CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
876 | return 0; | |
877 | } | |
8931b30d DSH |
878 | |
879 | CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags) | |
0f113f3e MC |
880 | { |
881 | CMSerr(CMS_F_CMS_COMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM); | |
882 | return NULL; | |
883 | } | |
8931b30d DSH |
884 | |
885 | #endif |