]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* crypto/pkcs7/pk7_doit.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
ec577822 BM |
61 | #include <openssl/rand.h> |
62 | #include <openssl/objects.h> | |
63 | #include <openssl/x509.h> | |
d02b48c6 | 64 | |
b6436ff2 BL |
65 | static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, |
66 | void *value); | |
67 | static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid); | |
dfeab068 | 68 | |
6b691a5c | 69 | BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio) |
d02b48c6 RE |
70 | { |
71 | int i,j; | |
dfeab068 | 72 | BIO *out=NULL,*btmp=NULL; |
d02b48c6 | 73 | X509_ALGOR *xa; |
e778802f BL |
74 | const EVP_MD *evp_md; |
75 | const EVP_CIPHER *evp_cipher=NULL; | |
426edadf | 76 | STACK_OF(X509_ALGOR) *md_sk=NULL; |
8f0edcd1 | 77 | STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; |
58964a49 RE |
78 | X509_ALGOR *xalg=NULL; |
79 | PKCS7_RECIP_INFO *ri=NULL; | |
80 | EVP_PKEY *pkey; | |
d02b48c6 RE |
81 | |
82 | i=OBJ_obj2nid(p7->type); | |
83 | p7->state=PKCS7_S_HEADER; | |
84 | ||
85 | switch (i) | |
86 | { | |
87 | case NID_pkcs7_signed: | |
58964a49 RE |
88 | md_sk=p7->d.sign->md_algs; |
89 | break; | |
90 | case NID_pkcs7_signedAndEnveloped: | |
91 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
92 | md_sk=p7->d.signed_and_enveloped->md_algs; | |
84fa704c DSH |
93 | xalg=p7->d.signed_and_enveloped->enc_data->algorithm; |
94 | evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher; | |
58964a49 | 95 | if (evp_cipher == NULL) |
d02b48c6 | 96 | { |
84fa704c DSH |
97 | PKCS7err(PKCS7_F_PKCS7_DATAINIT, |
98 | PKCS7_R_CIPHER_NOT_INITIALIZED); | |
58964a49 RE |
99 | goto err; |
100 | } | |
58964a49 | 101 | break; |
dfeab068 RE |
102 | case NID_pkcs7_enveloped: |
103 | rsk=p7->d.enveloped->recipientinfo; | |
84fa704c DSH |
104 | xalg=p7->d.enveloped->enc_data->algorithm; |
105 | evp_cipher=p7->d.enveloped->enc_data->cipher; | |
dfeab068 RE |
106 | if (evp_cipher == NULL) |
107 | { | |
84fa704c DSH |
108 | PKCS7err(PKCS7_F_PKCS7_DATAINIT, |
109 | PKCS7_R_CIPHER_NOT_INITIALIZED); | |
dfeab068 RE |
110 | goto err; |
111 | } | |
dfeab068 | 112 | break; |
58964a49 RE |
113 | default: |
114 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
115 | goto err; | |
116 | } | |
117 | ||
118 | if (md_sk != NULL) | |
119 | { | |
426edadf | 120 | for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) |
58964a49 | 121 | { |
426edadf | 122 | xa=sk_X509_ALGOR_value(md_sk,i); |
dfeab068 RE |
123 | if ((btmp=BIO_new(BIO_f_md())) == NULL) |
124 | { | |
125 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); | |
126 | goto err; | |
127 | } | |
d02b48c6 RE |
128 | |
129 | j=OBJ_obj2nid(xa->algorithm); | |
130 | evp_md=EVP_get_digestbyname(OBJ_nid2sn(j)); | |
131 | if (evp_md == NULL) | |
132 | { | |
133 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE); | |
134 | goto err; | |
135 | } | |
136 | ||
137 | BIO_set_md(btmp,evp_md); | |
138 | if (out == NULL) | |
139 | out=btmp; | |
140 | else | |
141 | BIO_push(out,btmp); | |
dfeab068 | 142 | btmp=NULL; |
d02b48c6 | 143 | } |
d02b48c6 | 144 | } |
58964a49 RE |
145 | |
146 | if (evp_cipher != NULL) | |
147 | { | |
148 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
149 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
150 | int keylen,ivlen; | |
151 | int jj,max; | |
152 | unsigned char *tmp; | |
84fa704c | 153 | EVP_CIPHER_CTX *ctx; |
58964a49 | 154 | |
dfeab068 RE |
155 | if ((btmp=BIO_new(BIO_f_cipher())) == NULL) |
156 | { | |
157 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); | |
158 | goto err; | |
159 | } | |
84fa704c | 160 | BIO_get_cipher_ctx(btmp, &ctx); |
58964a49 RE |
161 | keylen=EVP_CIPHER_key_length(evp_cipher); |
162 | ivlen=EVP_CIPHER_iv_length(evp_cipher); | |
84fa704c | 163 | RAND_bytes(key,keylen); |
84fa704c | 164 | xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher)); |
1b266dab DSH |
165 | if (ivlen > 0) RAND_bytes(iv,ivlen); |
166 | EVP_CipherInit(ctx, evp_cipher, key, iv, 1); | |
58964a49 | 167 | |
884e8ec6 | 168 | if (ivlen > 0) { |
884e8ec6 DSH |
169 | if (xalg->parameter == NULL) |
170 | xalg->parameter=ASN1_TYPE_new(); | |
171 | if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0) | |
172 | goto err; | |
173 | } | |
58964a49 RE |
174 | |
175 | /* Lets do the pub key stuff :-) */ | |
176 | max=0; | |
8f0edcd1 | 177 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) |
58964a49 | 178 | { |
8f0edcd1 | 179 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); |
dfeab068 RE |
180 | if (ri->cert == NULL) |
181 | { | |
182 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO); | |
183 | goto err; | |
184 | } | |
58964a49 RE |
185 | pkey=X509_get_pubkey(ri->cert); |
186 | jj=EVP_PKEY_size(pkey); | |
924acc54 | 187 | EVP_PKEY_free(pkey); |
58964a49 RE |
188 | if (max < jj) max=jj; |
189 | } | |
dfeab068 RE |
190 | if ((tmp=(unsigned char *)Malloc(max)) == NULL) |
191 | { | |
192 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE); | |
193 | goto err; | |
194 | } | |
8f0edcd1 | 195 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) |
58964a49 | 196 | { |
8f0edcd1 | 197 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); |
58964a49 RE |
198 | pkey=X509_get_pubkey(ri->cert); |
199 | jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey); | |
924acc54 | 200 | EVP_PKEY_free(pkey); |
dfeab068 RE |
201 | if (jj <= 0) |
202 | { | |
203 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB); | |
204 | Free(tmp); | |
205 | goto err; | |
206 | } | |
58964a49 RE |
207 | ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj); |
208 | } | |
dfeab068 | 209 | Free(tmp); |
1b266dab | 210 | memset(key, 0, keylen); |
58964a49 | 211 | |
58964a49 RE |
212 | if (out == NULL) |
213 | out=btmp; | |
214 | else | |
215 | BIO_push(out,btmp); | |
dfeab068 | 216 | btmp=NULL; |
58964a49 RE |
217 | } |
218 | ||
219 | if (bio == NULL) /* ??????????? */ | |
d02b48c6 RE |
220 | { |
221 | if (p7->detached) | |
222 | bio=BIO_new(BIO_s_null()); | |
223 | else | |
224 | { | |
225 | bio=BIO_new(BIO_s_mem()); | |
dfeab068 RE |
226 | /* We need to set this so that when we have read all |
227 | * the data, the encrypt BIO, if present, will read | |
228 | * EOF and encode the last few bytes */ | |
229 | BIO_set_mem_eof_return(bio,0); | |
230 | ||
d02b48c6 RE |
231 | if (PKCS7_type_is_signed(p7) && |
232 | PKCS7_type_is_data(p7->d.sign->contents)) | |
233 | { | |
234 | ASN1_OCTET_STRING *os; | |
235 | ||
236 | os=p7->d.sign->contents->d.data; | |
237 | if (os->length > 0) | |
58964a49 RE |
238 | BIO_write(bio,(char *)os->data, |
239 | os->length); | |
d02b48c6 RE |
240 | } |
241 | } | |
242 | } | |
243 | BIO_push(out,bio); | |
dfeab068 RE |
244 | bio=NULL; |
245 | if (0) | |
246 | { | |
247 | err: | |
248 | if (out != NULL) | |
249 | BIO_free_all(out); | |
250 | if (btmp != NULL) | |
251 | BIO_free_all(btmp); | |
252 | out=NULL; | |
253 | } | |
d02b48c6 | 254 | return(out); |
dfeab068 RE |
255 | } |
256 | ||
257 | /* int */ | |
84fa704c | 258 | BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert) |
dfeab068 RE |
259 | { |
260 | int i,j; | |
261 | BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL; | |
262 | char *tmp=NULL; | |
263 | X509_ALGOR *xa; | |
264 | ASN1_OCTET_STRING *data_body=NULL; | |
e778802f BL |
265 | const EVP_MD *evp_md; |
266 | const EVP_CIPHER *evp_cipher=NULL; | |
dfeab068 RE |
267 | EVP_CIPHER_CTX *evp_ctx=NULL; |
268 | X509_ALGOR *enc_alg=NULL; | |
426edadf | 269 | STACK_OF(X509_ALGOR) *md_sk=NULL; |
8f0edcd1 | 270 | STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; |
dfeab068 RE |
271 | X509_ALGOR *xalg=NULL; |
272 | PKCS7_RECIP_INFO *ri=NULL; | |
273 | /* EVP_PKEY *pkey; */ | |
274 | #if 0 | |
275 | X509_STORE_CTX s_ctx; | |
276 | #endif | |
277 | ||
278 | i=OBJ_obj2nid(p7->type); | |
279 | p7->state=PKCS7_S_HEADER; | |
280 | ||
281 | switch (i) | |
282 | { | |
283 | case NID_pkcs7_signed: | |
284 | data_body=p7->d.sign->contents->d.data; | |
285 | md_sk=p7->d.sign->md_algs; | |
286 | break; | |
287 | case NID_pkcs7_signedAndEnveloped: | |
288 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
289 | md_sk=p7->d.signed_and_enveloped->md_algs; | |
290 | data_body=p7->d.signed_and_enveloped->enc_data->enc_data; | |
291 | enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm; | |
292 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm))); | |
293 | if (evp_cipher == NULL) | |
294 | { | |
84fa704c | 295 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); |
dfeab068 RE |
296 | goto err; |
297 | } | |
298 | xalg=p7->d.signed_and_enveloped->enc_data->algorithm; | |
299 | break; | |
300 | case NID_pkcs7_enveloped: | |
301 | rsk=p7->d.enveloped->recipientinfo; | |
302 | enc_alg=p7->d.enveloped->enc_data->algorithm; | |
303 | data_body=p7->d.enveloped->enc_data->enc_data; | |
304 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm))); | |
305 | if (evp_cipher == NULL) | |
306 | { | |
84fa704c | 307 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); |
dfeab068 RE |
308 | goto err; |
309 | } | |
310 | xalg=p7->d.enveloped->enc_data->algorithm; | |
311 | break; | |
312 | default: | |
84fa704c | 313 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
dfeab068 RE |
314 | goto err; |
315 | } | |
316 | ||
317 | /* We will be checking the signature */ | |
318 | if (md_sk != NULL) | |
319 | { | |
426edadf | 320 | for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) |
dfeab068 | 321 | { |
426edadf | 322 | xa=sk_X509_ALGOR_value(md_sk,i); |
dfeab068 RE |
323 | if ((btmp=BIO_new(BIO_f_md())) == NULL) |
324 | { | |
84fa704c | 325 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); |
dfeab068 RE |
326 | goto err; |
327 | } | |
328 | ||
329 | j=OBJ_obj2nid(xa->algorithm); | |
330 | evp_md=EVP_get_digestbyname(OBJ_nid2sn(j)); | |
331 | if (evp_md == NULL) | |
332 | { | |
84fa704c | 333 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE); |
dfeab068 RE |
334 | goto err; |
335 | } | |
336 | ||
337 | BIO_set_md(btmp,evp_md); | |
338 | if (out == NULL) | |
339 | out=btmp; | |
340 | else | |
341 | BIO_push(out,btmp); | |
342 | btmp=NULL; | |
343 | } | |
344 | } | |
345 | ||
346 | if (evp_cipher != NULL) | |
347 | { | |
348 | #if 0 | |
349 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
350 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
351 | unsigned char *p; | |
352 | int keylen,ivlen; | |
353 | int max; | |
354 | X509_OBJECT ret; | |
355 | #endif | |
356 | int jj; | |
357 | ||
358 | if ((etmp=BIO_new(BIO_f_cipher())) == NULL) | |
359 | { | |
84fa704c | 360 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); |
dfeab068 RE |
361 | goto err; |
362 | } | |
363 | ||
364 | /* It was encrypted, we need to decrypt the secret key | |
365 | * with the private key */ | |
366 | ||
84fa704c DSH |
367 | /* Find the recipientInfo which matches the passed certificate |
368 | * (if any) | |
10243d97 DSH |
369 | */ |
370 | ||
8f0edcd1 BL |
371 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) { |
372 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); | |
84fa704c DSH |
373 | if(!X509_NAME_cmp(ri->issuer_and_serial->issuer, |
374 | pcert->cert_info->issuer) && | |
375 | !ASN1_INTEGER_cmp(pcert->cert_info->serialNumber, | |
376 | ri->issuer_and_serial->serial)) break; | |
dfeab068 | 377 | ri=NULL; |
84fa704c DSH |
378 | } |
379 | if (ri == NULL) { | |
380 | PKCS7err(PKCS7_F_PKCS7_DATADECODE, | |
381 | PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE); | |
dfeab068 | 382 | return(NULL); |
84fa704c | 383 | } |
dfeab068 RE |
384 | |
385 | jj=EVP_PKEY_size(pkey); | |
386 | tmp=Malloc(jj+10); | |
387 | if (tmp == NULL) | |
388 | { | |
84fa704c | 389 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE); |
dfeab068 RE |
390 | goto err; |
391 | } | |
392 | ||
393 | jj=EVP_PKEY_decrypt((unsigned char *)tmp, | |
394 | ASN1_STRING_data(ri->enc_key), | |
395 | ASN1_STRING_length(ri->enc_key), | |
396 | pkey); | |
397 | if (jj <= 0) | |
398 | { | |
84fa704c | 399 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB); |
dfeab068 RE |
400 | goto err; |
401 | } | |
402 | ||
403 | evp_ctx=NULL; | |
404 | BIO_get_cipher_ctx(etmp,&evp_ctx); | |
405 | EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0); | |
406 | if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0) | |
407 | return(NULL); | |
408 | ||
409 | if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) | |
410 | { | |
84fa704c DSH |
411 | PKCS7err(PKCS7_F_PKCS7_DATADECODE, |
412 | PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH); | |
dfeab068 RE |
413 | goto err; |
414 | } | |
415 | EVP_CipherInit(evp_ctx,NULL,(unsigned char *)tmp,NULL,0); | |
416 | ||
417 | memset(tmp,0,jj); | |
418 | ||
419 | if (out == NULL) | |
420 | out=etmp; | |
421 | else | |
422 | BIO_push(out,etmp); | |
423 | etmp=NULL; | |
424 | } | |
425 | ||
426 | #if 1 | |
427 | if (p7->detached || (in_bio != NULL)) | |
428 | { | |
429 | bio=in_bio; | |
430 | } | |
431 | else | |
432 | { | |
433 | bio=BIO_new(BIO_s_mem()); | |
434 | /* We need to set this so that when we have read all | |
435 | * the data, the encrypt BIO, if present, will read | |
436 | * EOF and encode the last few bytes */ | |
437 | BIO_set_mem_eof_return(bio,0); | |
438 | ||
439 | if (data_body->length > 0) | |
440 | BIO_write(bio,(char *)data_body->data,data_body->length); | |
441 | } | |
442 | BIO_push(out,bio); | |
443 | bio=NULL; | |
444 | #endif | |
445 | if (0) | |
446 | { | |
d02b48c6 | 447 | err: |
dfeab068 RE |
448 | if (out != NULL) BIO_free_all(out); |
449 | if (btmp != NULL) BIO_free_all(btmp); | |
450 | if (etmp != NULL) BIO_free_all(etmp); | |
451 | if (bio != NULL) BIO_free_all(bio); | |
452 | out=NULL; | |
453 | } | |
454 | if (tmp != NULL) | |
455 | Free(tmp); | |
456 | return(out); | |
d02b48c6 RE |
457 | } |
458 | ||
6b691a5c | 459 | int PKCS7_dataFinal(PKCS7 *p7, BIO *bio) |
d02b48c6 RE |
460 | { |
461 | int ret=0; | |
462 | int i,j; | |
463 | BIO *btmp; | |
464 | BUF_MEM *buf_mem=NULL; | |
465 | BUF_MEM *buf=NULL; | |
466 | PKCS7_SIGNER_INFO *si; | |
467 | EVP_MD_CTX *mdc,ctx_tmp; | |
b6436ff2 | 468 | STACK_OF(X509_ATTRIBUTE) *sk; |
b05b50e6 | 469 | STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL; |
d02b48c6 RE |
470 | unsigned char *p,*pp=NULL; |
471 | int x; | |
58964a49 | 472 | ASN1_OCTET_STRING *os=NULL; |
d02b48c6 RE |
473 | |
474 | i=OBJ_obj2nid(p7->type); | |
475 | p7->state=PKCS7_S_HEADER; | |
476 | ||
477 | switch (i) | |
478 | { | |
58964a49 RE |
479 | case NID_pkcs7_signedAndEnveloped: |
480 | /* XXXXXXXXXXXXXXXX */ | |
481 | si_sk=p7->d.signed_and_enveloped->signer_info; | |
482 | os=ASN1_OCTET_STRING_new(); | |
483 | p7->d.signed_and_enveloped->enc_data->enc_data=os; | |
484 | break; | |
dfeab068 RE |
485 | case NID_pkcs7_enveloped: |
486 | /* XXXXXXXXXXXXXXXX */ | |
487 | os=ASN1_OCTET_STRING_new(); | |
488 | p7->d.enveloped->enc_data->enc_data=os; | |
489 | break; | |
d02b48c6 | 490 | case NID_pkcs7_signed: |
58964a49 RE |
491 | si_sk=p7->d.sign->signer_info; |
492 | os=p7->d.sign->contents->d.data; | |
924acc54 DSH |
493 | /* If detached data then the content is excluded */ |
494 | if(p7->detached) { | |
495 | ASN1_OCTET_STRING_free(os); | |
496 | p7->d.sign->contents->d.data = NULL; | |
497 | } | |
58964a49 RE |
498 | break; |
499 | } | |
d02b48c6 | 500 | |
58964a49 RE |
501 | if (si_sk != NULL) |
502 | { | |
dfeab068 RE |
503 | if ((buf=BUF_MEM_new()) == NULL) |
504 | { | |
505 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB); | |
506 | goto err; | |
507 | } | |
b05b50e6 | 508 | for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++) |
d02b48c6 | 509 | { |
b05b50e6 | 510 | si=sk_PKCS7_SIGNER_INFO_value(si_sk,i); |
dfeab068 RE |
511 | if (si->pkey == NULL) continue; |
512 | ||
513 | j=OBJ_obj2nid(si->digest_alg->algorithm); | |
d02b48c6 RE |
514 | |
515 | btmp=bio; | |
516 | for (;;) | |
517 | { | |
518 | if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) | |
519 | == NULL) | |
520 | { | |
58964a49 | 521 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); |
d02b48c6 RE |
522 | goto err; |
523 | } | |
524 | BIO_get_md_ctx(btmp,&mdc); | |
525 | if (mdc == NULL) | |
526 | { | |
58964a49 | 527 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR); |
d02b48c6 RE |
528 | goto err; |
529 | } | |
dfeab068 | 530 | if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == j) |
d02b48c6 RE |
531 | break; |
532 | else | |
533 | btmp=btmp->next_bio; | |
534 | } | |
535 | ||
536 | /* We now have the EVP_MD_CTX, lets do the | |
537 | * signing. */ | |
538 | memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp)); | |
539 | if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey))) | |
dfeab068 RE |
540 | { |
541 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB); | |
d02b48c6 | 542 | goto err; |
dfeab068 | 543 | } |
d02b48c6 RE |
544 | |
545 | sk=si->auth_attr; | |
dfeab068 RE |
546 | |
547 | /* If there are attributes, we add the digest | |
548 | * attribute and only sign the attributes */ | |
b6436ff2 | 549 | if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0)) |
d02b48c6 | 550 | { |
dfeab068 RE |
551 | unsigned char md_data[EVP_MAX_MD_SIZE]; |
552 | unsigned int md_len; | |
553 | ASN1_OCTET_STRING *digest; | |
554 | ASN1_UTCTIME *sign_time; | |
e778802f | 555 | const EVP_MD *md_tmp; |
dfeab068 RE |
556 | |
557 | /* Add signing time */ | |
558 | sign_time=X509_gmtime_adj(NULL,0); | |
559 | PKCS7_add_signed_attribute(si, | |
560 | NID_pkcs9_signingTime, | |
c8b41850 | 561 | V_ASN1_UTCTIME,sign_time); |
dfeab068 RE |
562 | |
563 | /* Add digest */ | |
564 | md_tmp=EVP_MD_CTX_type(&ctx_tmp); | |
565 | EVP_DigestFinal(&ctx_tmp,md_data,&md_len); | |
566 | digest=ASN1_OCTET_STRING_new(); | |
567 | ASN1_OCTET_STRING_set(digest,md_data,md_len); | |
10243d97 DSH |
568 | PKCS7_add_signed_attribute(si, |
569 | NID_pkcs9_messageDigest, | |
c8b41850 | 570 | V_ASN1_OCTET_STRING,digest); |
dfeab068 RE |
571 | |
572 | /* Now sign the mess */ | |
573 | EVP_SignInit(&ctx_tmp,md_tmp); | |
b6436ff2 BL |
574 | x=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL, |
575 | i2d_X509_ATTRIBUTE, | |
576 | V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET); | |
dfeab068 | 577 | pp=(unsigned char *)Malloc(x); |
d02b48c6 | 578 | p=pp; |
b6436ff2 BL |
579 | i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p, |
580 | i2d_X509_ATTRIBUTE, | |
581 | V_ASN1_SET,V_ASN1_UNIVERSAL,IS_SET); | |
d02b48c6 RE |
582 | EVP_SignUpdate(&ctx_tmp,pp,x); |
583 | Free(pp); | |
dfeab068 | 584 | pp=NULL; |
d02b48c6 RE |
585 | } |
586 | ||
dfeab068 RE |
587 | if (si->pkey->type == EVP_PKEY_DSA) |
588 | ctx_tmp.digest=EVP_dss1(); | |
589 | ||
58964a49 | 590 | if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data, |
d02b48c6 | 591 | (unsigned int *)&buf->length,si->pkey)) |
dfeab068 RE |
592 | { |
593 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB); | |
d02b48c6 | 594 | goto err; |
dfeab068 | 595 | } |
d02b48c6 RE |
596 | if (!ASN1_STRING_set(si->enc_digest, |
597 | (unsigned char *)buf->data,buf->length)) | |
d02b48c6 | 598 | { |
dfeab068 | 599 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB); |
d02b48c6 RE |
600 | goto err; |
601 | } | |
d02b48c6 | 602 | } |
d02b48c6 RE |
603 | } |
604 | ||
924acc54 | 605 | if (!p7->detached) |
dfeab068 RE |
606 | { |
607 | btmp=BIO_find_type(bio,BIO_TYPE_MEM); | |
608 | if (btmp == NULL) | |
609 | { | |
610 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO); | |
611 | goto err; | |
612 | } | |
613 | BIO_get_mem_ptr(btmp,&buf_mem); | |
614 | ASN1_OCTET_STRING_set(os, | |
615 | (unsigned char *)buf_mem->data,buf_mem->length); | |
616 | } | |
617 | if (pp != NULL) Free(pp); | |
618 | pp=NULL; | |
619 | ||
d02b48c6 RE |
620 | ret=1; |
621 | err: | |
622 | if (buf != NULL) BUF_MEM_free(buf); | |
623 | return(ret); | |
624 | } | |
625 | ||
6b691a5c UM |
626 | int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio, |
627 | PKCS7 *p7, PKCS7_SIGNER_INFO *si) | |
d02b48c6 | 628 | { |
dfeab068 | 629 | /* PKCS7_SIGNED *s; */ |
d02b48c6 RE |
630 | ASN1_OCTET_STRING *os; |
631 | EVP_MD_CTX mdc_tmp,*mdc; | |
632 | unsigned char *pp,*p; | |
633 | PKCS7_ISSUER_AND_SERIAL *ias; | |
dfeab068 RE |
634 | int ret=0,i; |
635 | int md_type; | |
b6436ff2 | 636 | STACK_OF(X509_ATTRIBUTE) *sk; |
f73e07cf | 637 | STACK_OF(X509) *cert; |
d02b48c6 RE |
638 | BIO *btmp; |
639 | X509 *x509; | |
924acc54 | 640 | EVP_PKEY *pkey; |
d02b48c6 | 641 | |
dfeab068 RE |
642 | if (PKCS7_type_is_signed(p7)) |
643 | { | |
644 | cert=p7->d.sign->cert; | |
645 | } | |
646 | else if (PKCS7_type_is_signedAndEnveloped(p7)) | |
647 | { | |
648 | cert=p7->d.signed_and_enveloped->cert; | |
649 | } | |
650 | else | |
651 | { | |
652 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE); | |
653 | goto err; | |
654 | } | |
58964a49 | 655 | /* XXXXXXXXXXXXXXXXXXXXXXX */ |
d02b48c6 | 656 | ias=si->issuer_and_serial; |
d02b48c6 | 657 | |
dfeab068 | 658 | x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial); |
d02b48c6 RE |
659 | |
660 | /* were we able to find the cert in passed to us */ | |
661 | if (x509 == NULL) | |
662 | { | |
663 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE); | |
664 | goto err; | |
665 | } | |
666 | ||
667 | /* Lets verify */ | |
dfeab068 | 668 | X509_STORE_CTX_init(ctx,cert_store,x509,cert); |
d02b48c6 | 669 | i=X509_verify_cert(ctx); |
dfeab068 RE |
670 | if (i <= 0) |
671 | { | |
672 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); | |
673 | goto err; | |
674 | } | |
d02b48c6 RE |
675 | X509_STORE_CTX_cleanup(ctx); |
676 | ||
677 | /* So we like 'x509', lets check the signature. */ | |
678 | md_type=OBJ_obj2nid(si->digest_alg->algorithm); | |
679 | ||
680 | btmp=bio; | |
681 | for (;;) | |
682 | { | |
683 | if ((btmp == NULL) || | |
684 | ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL)) | |
685 | { | |
686 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | |
687 | goto err; | |
688 | } | |
689 | BIO_get_md_ctx(btmp,&mdc); | |
690 | if (mdc == NULL) | |
691 | { | |
692 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_INTERNAL_ERROR); | |
693 | goto err; | |
694 | } | |
695 | if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type) | |
696 | break; | |
697 | btmp=btmp->next_bio; | |
698 | } | |
699 | ||
dfeab068 RE |
700 | /* mdc is the digest ctx that we want, unless there are attributes, |
701 | * in which case the digest is the signed attributes */ | |
d02b48c6 RE |
702 | memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp)); |
703 | ||
704 | sk=si->auth_attr; | |
b6436ff2 | 705 | if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0)) |
d02b48c6 | 706 | { |
dfeab068 | 707 | unsigned char md_dat[EVP_MAX_MD_SIZE]; |
0b415fb0 | 708 | unsigned int md_len; |
dfeab068 RE |
709 | ASN1_OCTET_STRING *message_digest; |
710 | ||
711 | EVP_DigestFinal(&mdc_tmp,md_dat,&md_len); | |
712 | message_digest=PKCS7_digest_from_attributes(sk); | |
713 | if (!message_digest) | |
714 | { | |
715 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | |
716 | goto err; | |
717 | } | |
0b415fb0 | 718 | if ((message_digest->length != (int)md_len) || |
dfeab068 RE |
719 | (memcmp(message_digest->data,md_dat,md_len))) |
720 | { | |
721 | #if 0 | |
722 | { | |
723 | int ii; | |
724 | for (ii=0; ii<message_digest->length; ii++) | |
725 | printf("%02X",message_digest->data[ii]); printf(" sent\n"); | |
726 | for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n"); | |
727 | } | |
728 | #endif | |
729 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_DIGEST_FAILURE); | |
730 | ret= -1; | |
731 | goto err; | |
732 | } | |
733 | ||
734 | EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type)); | |
924acc54 DSH |
735 | /* Note: when forming the encoding of the attributes we |
736 | * shouldn't reorder them or this will break the signature. | |
737 | * This is done by using the IS_SEQUENCE flag. | |
738 | */ | |
b6436ff2 | 739 | i=i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,NULL,i2d_X509_ATTRIBUTE, |
924acc54 | 740 | V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE); |
b6436ff2 | 741 | pp=Malloc(i); |
d02b48c6 | 742 | p=pp; |
b6436ff2 | 743 | i2d_ASN1_SET_OF_X509_ATTRIBUTE(sk,&p,i2d_X509_ATTRIBUTE, |
924acc54 | 744 | V_ASN1_SET,V_ASN1_UNIVERSAL, IS_SEQUENCE); |
d02b48c6 | 745 | EVP_VerifyUpdate(&mdc_tmp,pp,i); |
924acc54 | 746 | |
dfeab068 | 747 | Free(pp); |
d02b48c6 RE |
748 | } |
749 | ||
750 | os=si->enc_digest; | |
924acc54 DSH |
751 | pkey = X509_get_pubkey(x509); |
752 | if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1(); | |
dfeab068 | 753 | |
924acc54 DSH |
754 | i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey); |
755 | EVP_PKEY_free(pkey); | |
d02b48c6 RE |
756 | if (i <= 0) |
757 | { | |
758 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_SIGNATURE_FAILURE); | |
759 | ret= -1; | |
760 | goto err; | |
761 | } | |
762 | else | |
763 | ret=1; | |
764 | err: | |
765 | return(ret); | |
766 | } | |
767 | ||
6b691a5c | 768 | PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx) |
dfeab068 | 769 | { |
8f0edcd1 | 770 | STACK_OF(PKCS7_RECIP_INFO) *rsk; |
dfeab068 RE |
771 | PKCS7_RECIP_INFO *ri; |
772 | int i; | |
773 | ||
774 | i=OBJ_obj2nid(p7->type); | |
775 | if (i != NID_pkcs7_signedAndEnveloped) return(NULL); | |
776 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
8f0edcd1 BL |
777 | ri=sk_PKCS7_RECIP_INFO_value(rsk,0); |
778 | if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL); | |
779 | ri=sk_PKCS7_RECIP_INFO_value(rsk,idx); | |
dfeab068 RE |
780 | return(ri->issuer_and_serial); |
781 | } | |
782 | ||
6b691a5c | 783 | ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid) |
dfeab068 RE |
784 | { |
785 | return(get_attribute(si->auth_attr,nid)); | |
786 | } | |
787 | ||
6b691a5c | 788 | ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid) |
dfeab068 RE |
789 | { |
790 | return(get_attribute(si->unauth_attr,nid)); | |
791 | } | |
792 | ||
b6436ff2 | 793 | static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid) |
dfeab068 RE |
794 | { |
795 | int i; | |
796 | X509_ATTRIBUTE *xa; | |
797 | ASN1_OBJECT *o; | |
798 | ||
799 | o=OBJ_nid2obj(nid); | |
10243d97 | 800 | if (!o || !sk) return(NULL); |
b6436ff2 | 801 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) |
dfeab068 | 802 | { |
b6436ff2 | 803 | xa=sk_X509_ATTRIBUTE_value(sk,i); |
dfeab068 RE |
804 | if (OBJ_cmp(xa->object,o) == 0) |
805 | { | |
d35ea5b0 BL |
806 | if (xa->set && sk_ASN1_TYPE_num(xa->value.set)) |
807 | return(sk_ASN1_TYPE_value(xa->value.set,0)); | |
dfeab068 RE |
808 | else |
809 | return(NULL); | |
810 | } | |
811 | } | |
812 | return(NULL); | |
813 | } | |
814 | ||
b6436ff2 | 815 | ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk) |
10243d97 | 816 | { |
dfeab068 | 817 | ASN1_TYPE *astype; |
10243d97 DSH |
818 | if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL; |
819 | return astype->value.octet_string; | |
820 | } | |
dfeab068 | 821 | |
b6436ff2 BL |
822 | int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si, |
823 | STACK_OF(X509_ATTRIBUTE) *sk) | |
dfeab068 RE |
824 | { |
825 | int i; | |
826 | ||
827 | if (p7si->auth_attr != NULL) | |
b6436ff2 BL |
828 | sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free); |
829 | p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk); | |
830 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) | |
dfeab068 | 831 | { |
b6436ff2 BL |
832 | if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i, |
833 | X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) | |
834 | == NULL) | |
dfeab068 RE |
835 | return(0); |
836 | } | |
837 | return(1); | |
838 | } | |
839 | ||
b6436ff2 | 840 | int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk) |
dfeab068 RE |
841 | { |
842 | int i; | |
843 | ||
844 | if (p7si->unauth_attr != NULL) | |
b6436ff2 BL |
845 | sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr, |
846 | X509_ATTRIBUTE_free); | |
847 | p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk); | |
848 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) | |
dfeab068 | 849 | { |
b6436ff2 BL |
850 | if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i, |
851 | X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) | |
852 | == NULL) | |
dfeab068 RE |
853 | return(0); |
854 | } | |
855 | return(1); | |
856 | } | |
857 | ||
6b691a5c | 858 | int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, |
c8b41850 | 859 | void *value) |
dfeab068 RE |
860 | { |
861 | return(add_attribute(&(p7si->auth_attr),nid,atrtype,value)); | |
862 | } | |
863 | ||
6b691a5c | 864 | int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, |
c8b41850 | 865 | void *value) |
dfeab068 RE |
866 | { |
867 | return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value)); | |
868 | } | |
869 | ||
b6436ff2 BL |
870 | static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, |
871 | void *value) | |
dfeab068 RE |
872 | { |
873 | X509_ATTRIBUTE *attr=NULL; | |
dfeab068 RE |
874 | |
875 | if (*sk == NULL) | |
876 | { | |
b6436ff2 | 877 | *sk = sk_X509_ATTRIBUTE_new(NULL); |
dfeab068 RE |
878 | new_attrib: |
879 | attr=X509_ATTRIBUTE_create(nid,atrtype,value); | |
b6436ff2 | 880 | sk_X509_ATTRIBUTE_push(*sk,attr); |
dfeab068 RE |
881 | } |
882 | else | |
883 | { | |
884 | int i; | |
885 | ||
b6436ff2 | 886 | for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++) |
dfeab068 | 887 | { |
b6436ff2 | 888 | attr=sk_X509_ATTRIBUTE_value(*sk,i); |
dfeab068 RE |
889 | if (OBJ_obj2nid(attr->object) == nid) |
890 | { | |
891 | X509_ATTRIBUTE_free(attr); | |
892 | attr=X509_ATTRIBUTE_create(nid,atrtype,value); | |
b6436ff2 | 893 | sk_X509_ATTRIBUTE_set(*sk,i,attr); |
dfeab068 RE |
894 | goto end; |
895 | } | |
896 | } | |
897 | goto new_attrib; | |
898 | } | |
899 | end: | |
900 | return(1); | |
901 | } | |
902 |