]>
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" | |
58964a49 | 61 | #include "rand.h" |
d02b48c6 RE |
62 | #include "objects.h" |
63 | #include "x509.h" | |
64 | ||
dfeab068 RE |
65 | static int add_attribute(STACK **sk, int nid, int atrtype, char *value); |
66 | static ASN1_TYPE *get_attribute(STACK *sk, int nid); | |
67 | ||
68 | #if 1 | |
d02b48c6 RE |
69 | BIO *PKCS7_dataInit(p7,bio) |
70 | PKCS7 *p7; | |
71 | BIO *bio; | |
72 | { | |
73 | int i,j; | |
dfeab068 | 74 | BIO *out=NULL,*btmp=NULL; |
d02b48c6 RE |
75 | X509_ALGOR *xa; |
76 | EVP_MD *evp_md; | |
58964a49 RE |
77 | EVP_CIPHER *evp_cipher=NULL; |
78 | STACK *md_sk=NULL,*rsk=NULL; | |
79 | X509_ALGOR *xalg=NULL; | |
80 | PKCS7_RECIP_INFO *ri=NULL; | |
81 | EVP_PKEY *pkey; | |
d02b48c6 RE |
82 | |
83 | i=OBJ_obj2nid(p7->type); | |
84 | p7->state=PKCS7_S_HEADER; | |
85 | ||
86 | switch (i) | |
87 | { | |
88 | case NID_pkcs7_signed: | |
58964a49 RE |
89 | md_sk=p7->d.sign->md_algs; |
90 | break; | |
91 | case NID_pkcs7_signedAndEnveloped: | |
92 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
93 | md_sk=p7->d.signed_and_enveloped->md_algs; | |
94 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(p7->d.signed_and_enveloped->enc_data->algorithm->algorithm))); | |
95 | if (evp_cipher == NULL) | |
d02b48c6 | 96 | { |
58964a49 RE |
97 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); |
98 | goto err; | |
99 | } | |
100 | xalg=p7->d.signed_and_enveloped->enc_data->algorithm; | |
101 | break; | |
dfeab068 RE |
102 | case NID_pkcs7_enveloped: |
103 | rsk=p7->d.enveloped->recipientinfo; | |
104 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(p7->d.enveloped->enc_data->algorithm->algorithm))); | |
105 | if (evp_cipher == NULL) | |
106 | { | |
107 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); | |
108 | goto err; | |
109 | } | |
110 | xalg=p7->d.enveloped->enc_data->algorithm; | |
111 | break; | |
58964a49 RE |
112 | default: |
113 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
114 | goto err; | |
115 | } | |
116 | ||
117 | if (md_sk != NULL) | |
118 | { | |
119 | for (i=0; i<sk_num(md_sk); i++) | |
120 | { | |
121 | xa=(X509_ALGOR *)sk_value(md_sk,i); | |
dfeab068 RE |
122 | if ((btmp=BIO_new(BIO_f_md())) == NULL) |
123 | { | |
124 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); | |
125 | goto err; | |
126 | } | |
d02b48c6 RE |
127 | |
128 | j=OBJ_obj2nid(xa->algorithm); | |
129 | evp_md=EVP_get_digestbyname(OBJ_nid2sn(j)); | |
130 | if (evp_md == NULL) | |
131 | { | |
132 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE); | |
133 | goto err; | |
134 | } | |
135 | ||
136 | BIO_set_md(btmp,evp_md); | |
137 | if (out == NULL) | |
138 | out=btmp; | |
139 | else | |
140 | BIO_push(out,btmp); | |
dfeab068 | 141 | btmp=NULL; |
d02b48c6 | 142 | } |
d02b48c6 | 143 | } |
58964a49 RE |
144 | |
145 | if (evp_cipher != NULL) | |
146 | { | |
147 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
148 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
149 | int keylen,ivlen; | |
150 | int jj,max; | |
151 | unsigned char *tmp; | |
152 | ||
dfeab068 RE |
153 | if ((btmp=BIO_new(BIO_f_cipher())) == NULL) |
154 | { | |
155 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); | |
156 | goto err; | |
157 | } | |
58964a49 RE |
158 | keylen=EVP_CIPHER_key_length(evp_cipher); |
159 | ivlen=EVP_CIPHER_iv_length(evp_cipher); | |
160 | ||
161 | if (ivlen > 0) | |
162 | { | |
163 | ASN1_OCTET_STRING *os; | |
164 | ||
165 | RAND_bytes(iv,ivlen); | |
166 | os=ASN1_OCTET_STRING_new(); | |
167 | ASN1_OCTET_STRING_set(os,iv,ivlen); | |
dfeab068 RE |
168 | /* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX this needs to change */ |
169 | if (xalg->parameter == NULL) | |
170 | xalg->parameter=ASN1_TYPE_new(); | |
171 | ASN1_TYPE_set(xalg->parameter,V_ASN1_OCTET_STRING, | |
58964a49 | 172 | (char *)os); |
dfeab068 | 173 | } |
58964a49 RE |
174 | RAND_bytes(key,keylen); |
175 | ||
176 | /* Lets do the pub key stuff :-) */ | |
177 | max=0; | |
178 | for (i=0; i<sk_num(rsk); i++) | |
179 | { | |
180 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i); | |
dfeab068 RE |
181 | if (ri->cert == NULL) |
182 | { | |
183 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO); | |
184 | goto err; | |
185 | } | |
58964a49 RE |
186 | pkey=X509_get_pubkey(ri->cert); |
187 | jj=EVP_PKEY_size(pkey); | |
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 | } | |
58964a49 RE |
195 | for (i=0; i<sk_num(rsk); i++) |
196 | { | |
197 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i); | |
198 | pkey=X509_get_pubkey(ri->cert); | |
199 | jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey); | |
dfeab068 RE |
200 | if (jj <= 0) |
201 | { | |
202 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB); | |
203 | Free(tmp); | |
204 | goto err; | |
205 | } | |
58964a49 RE |
206 | ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj); |
207 | } | |
dfeab068 | 208 | Free(tmp); |
58964a49 RE |
209 | |
210 | BIO_set_cipher(btmp,evp_cipher,key,iv,1); | |
211 | ||
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 */ | |
258 | BIO *PKCS7_dataDecode(p7,pkey,in_bio,xs) | |
259 | PKCS7 *p7; | |
260 | EVP_PKEY *pkey; | |
261 | BIO *in_bio; | |
262 | X509_STORE *xs; | |
263 | { | |
264 | int i,j; | |
265 | BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL; | |
266 | char *tmp=NULL; | |
267 | X509_ALGOR *xa; | |
268 | ASN1_OCTET_STRING *data_body=NULL; | |
269 | EVP_MD *evp_md; | |
270 | EVP_CIPHER *evp_cipher=NULL; | |
271 | EVP_CIPHER_CTX *evp_ctx=NULL; | |
272 | X509_ALGOR *enc_alg=NULL; | |
273 | STACK *md_sk=NULL,*rsk=NULL; | |
274 | X509_ALGOR *xalg=NULL; | |
275 | PKCS7_RECIP_INFO *ri=NULL; | |
276 | /* EVP_PKEY *pkey; */ | |
277 | #if 0 | |
278 | X509_STORE_CTX s_ctx; | |
279 | #endif | |
280 | ||
281 | i=OBJ_obj2nid(p7->type); | |
282 | p7->state=PKCS7_S_HEADER; | |
283 | ||
284 | switch (i) | |
285 | { | |
286 | case NID_pkcs7_signed: | |
287 | data_body=p7->d.sign->contents->d.data; | |
288 | md_sk=p7->d.sign->md_algs; | |
289 | break; | |
290 | case NID_pkcs7_signedAndEnveloped: | |
291 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
292 | md_sk=p7->d.signed_and_enveloped->md_algs; | |
293 | data_body=p7->d.signed_and_enveloped->enc_data->enc_data; | |
294 | enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm; | |
295 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm))); | |
296 | if (evp_cipher == NULL) | |
297 | { | |
298 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); | |
299 | goto err; | |
300 | } | |
301 | xalg=p7->d.signed_and_enveloped->enc_data->algorithm; | |
302 | break; | |
303 | case NID_pkcs7_enveloped: | |
304 | rsk=p7->d.enveloped->recipientinfo; | |
305 | enc_alg=p7->d.enveloped->enc_data->algorithm; | |
306 | data_body=p7->d.enveloped->enc_data->enc_data; | |
307 | evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm))); | |
308 | if (evp_cipher == NULL) | |
309 | { | |
310 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); | |
311 | goto err; | |
312 | } | |
313 | xalg=p7->d.enveloped->enc_data->algorithm; | |
314 | break; | |
315 | default: | |
316 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
317 | goto err; | |
318 | } | |
319 | ||
320 | /* We will be checking the signature */ | |
321 | if (md_sk != NULL) | |
322 | { | |
323 | for (i=0; i<sk_num(md_sk); i++) | |
324 | { | |
325 | xa=(X509_ALGOR *)sk_value(md_sk,i); | |
326 | if ((btmp=BIO_new(BIO_f_md())) == NULL) | |
327 | { | |
328 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,ERR_R_BIO_LIB); | |
329 | goto err; | |
330 | } | |
331 | ||
332 | j=OBJ_obj2nid(xa->algorithm); | |
333 | evp_md=EVP_get_digestbyname(OBJ_nid2sn(j)); | |
334 | if (evp_md == NULL) | |
335 | { | |
336 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,PKCS7_R_UNKNOWN_DIGEST_TYPE); | |
337 | goto err; | |
338 | } | |
339 | ||
340 | BIO_set_md(btmp,evp_md); | |
341 | if (out == NULL) | |
342 | out=btmp; | |
343 | else | |
344 | BIO_push(out,btmp); | |
345 | btmp=NULL; | |
346 | } | |
347 | } | |
348 | ||
349 | if (evp_cipher != NULL) | |
350 | { | |
351 | #if 0 | |
352 | unsigned char key[EVP_MAX_KEY_LENGTH]; | |
353 | unsigned char iv[EVP_MAX_IV_LENGTH]; | |
354 | unsigned char *p; | |
355 | int keylen,ivlen; | |
356 | int max; | |
357 | X509_OBJECT ret; | |
358 | #endif | |
359 | int jj; | |
360 | ||
361 | if ((etmp=BIO_new(BIO_f_cipher())) == NULL) | |
362 | { | |
363 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,ERR_R_BIO_LIB); | |
364 | goto err; | |
365 | } | |
366 | ||
367 | /* It was encrypted, we need to decrypt the secret key | |
368 | * with the private key */ | |
369 | ||
370 | /* We need to find a private key for one of the people in the | |
371 | * recipentinfo list */ | |
372 | if (rsk == NULL) | |
373 | return(NULL); | |
374 | ||
375 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,0); | |
376 | #if 0 | |
377 | X509_STORE_CTX_init(&s_ctx,xs,NULL,NULL); | |
378 | for (i=0; i<sk_num(rsk); i++) | |
379 | { | |
380 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i); | |
381 | uf (X509_STORE_get_by_issuer_serial(&s_ctx, | |
382 | X509_LU_PKEY, | |
383 | ri->issuer_and_serial->issuer, | |
384 | ri->issuer_and_serial->serial, | |
385 | &ret)) | |
386 | break; | |
387 | ri=NULL; | |
388 | } | |
389 | if (ri == NULL) return(NULL); | |
390 | pkey=ret.data.pkey; | |
391 | #endif | |
392 | if (pkey == NULL) | |
393 | { | |
394 | return(NULL); | |
395 | } | |
396 | ||
397 | jj=EVP_PKEY_size(pkey); | |
398 | tmp=Malloc(jj+10); | |
399 | if (tmp == NULL) | |
400 | { | |
401 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,ERR_R_MALLOC_FAILURE); | |
402 | goto err; | |
403 | } | |
404 | ||
405 | jj=EVP_PKEY_decrypt((unsigned char *)tmp, | |
406 | ASN1_STRING_data(ri->enc_key), | |
407 | ASN1_STRING_length(ri->enc_key), | |
408 | pkey); | |
409 | if (jj <= 0) | |
410 | { | |
411 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,ERR_R_EVP_LIB); | |
412 | goto err; | |
413 | } | |
414 | ||
415 | evp_ctx=NULL; | |
416 | BIO_get_cipher_ctx(etmp,&evp_ctx); | |
417 | EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0); | |
418 | if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0) | |
419 | return(NULL); | |
420 | ||
421 | if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) | |
422 | { | |
423 | PKCS7err(PKCS7_F_PKCS7_SIGNENVELOPEDECRYPT,PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH); | |
424 | goto err; | |
425 | } | |
426 | EVP_CipherInit(evp_ctx,NULL,(unsigned char *)tmp,NULL,0); | |
427 | ||
428 | memset(tmp,0,jj); | |
429 | ||
430 | if (out == NULL) | |
431 | out=etmp; | |
432 | else | |
433 | BIO_push(out,etmp); | |
434 | etmp=NULL; | |
435 | } | |
436 | ||
437 | #if 1 | |
438 | if (p7->detached || (in_bio != NULL)) | |
439 | { | |
440 | bio=in_bio; | |
441 | } | |
442 | else | |
443 | { | |
444 | bio=BIO_new(BIO_s_mem()); | |
445 | /* We need to set this so that when we have read all | |
446 | * the data, the encrypt BIO, if present, will read | |
447 | * EOF and encode the last few bytes */ | |
448 | BIO_set_mem_eof_return(bio,0); | |
449 | ||
450 | if (data_body->length > 0) | |
451 | BIO_write(bio,(char *)data_body->data,data_body->length); | |
452 | } | |
453 | BIO_push(out,bio); | |
454 | bio=NULL; | |
455 | #endif | |
456 | if (0) | |
457 | { | |
d02b48c6 | 458 | err: |
dfeab068 RE |
459 | if (out != NULL) BIO_free_all(out); |
460 | if (btmp != NULL) BIO_free_all(btmp); | |
461 | if (etmp != NULL) BIO_free_all(etmp); | |
462 | if (bio != NULL) BIO_free_all(bio); | |
463 | out=NULL; | |
464 | } | |
465 | if (tmp != NULL) | |
466 | Free(tmp); | |
467 | return(out); | |
d02b48c6 | 468 | } |
dfeab068 | 469 | #endif |
d02b48c6 | 470 | |
dfeab068 | 471 | int PKCS7_dataFinal(p7,bio) |
d02b48c6 RE |
472 | PKCS7 *p7; |
473 | BIO *bio; | |
474 | { | |
475 | int ret=0; | |
476 | int i,j; | |
477 | BIO *btmp; | |
478 | BUF_MEM *buf_mem=NULL; | |
479 | BUF_MEM *buf=NULL; | |
480 | PKCS7_SIGNER_INFO *si; | |
481 | EVP_MD_CTX *mdc,ctx_tmp; | |
58964a49 | 482 | STACK *sk,*si_sk=NULL; |
d02b48c6 RE |
483 | unsigned char *p,*pp=NULL; |
484 | int x; | |
58964a49 | 485 | ASN1_OCTET_STRING *os=NULL; |
d02b48c6 RE |
486 | |
487 | i=OBJ_obj2nid(p7->type); | |
488 | p7->state=PKCS7_S_HEADER; | |
489 | ||
490 | switch (i) | |
491 | { | |
58964a49 RE |
492 | case NID_pkcs7_signedAndEnveloped: |
493 | /* XXXXXXXXXXXXXXXX */ | |
494 | si_sk=p7->d.signed_and_enveloped->signer_info; | |
495 | os=ASN1_OCTET_STRING_new(); | |
496 | p7->d.signed_and_enveloped->enc_data->enc_data=os; | |
497 | break; | |
dfeab068 RE |
498 | case NID_pkcs7_enveloped: |
499 | /* XXXXXXXXXXXXXXXX */ | |
500 | os=ASN1_OCTET_STRING_new(); | |
501 | p7->d.enveloped->enc_data->enc_data=os; | |
502 | break; | |
d02b48c6 | 503 | case NID_pkcs7_signed: |
58964a49 RE |
504 | si_sk=p7->d.sign->signer_info; |
505 | os=p7->d.sign->contents->d.data; | |
506 | break; | |
507 | } | |
d02b48c6 | 508 | |
58964a49 RE |
509 | if (si_sk != NULL) |
510 | { | |
dfeab068 RE |
511 | if ((buf=BUF_MEM_new()) == NULL) |
512 | { | |
513 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB); | |
514 | goto err; | |
515 | } | |
58964a49 | 516 | for (i=0; i<sk_num(si_sk); i++) |
d02b48c6 RE |
517 | { |
518 | si=(PKCS7_SIGNER_INFO *) | |
58964a49 | 519 | sk_value(si_sk,i); |
dfeab068 RE |
520 | if (si->pkey == NULL) continue; |
521 | ||
522 | j=OBJ_obj2nid(si->digest_alg->algorithm); | |
d02b48c6 RE |
523 | |
524 | btmp=bio; | |
525 | for (;;) | |
526 | { | |
527 | if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) | |
528 | == NULL) | |
529 | { | |
58964a49 | 530 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); |
d02b48c6 RE |
531 | goto err; |
532 | } | |
533 | BIO_get_md_ctx(btmp,&mdc); | |
534 | if (mdc == NULL) | |
535 | { | |
58964a49 | 536 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR); |
d02b48c6 RE |
537 | goto err; |
538 | } | |
dfeab068 | 539 | if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == j) |
d02b48c6 RE |
540 | break; |
541 | else | |
542 | btmp=btmp->next_bio; | |
543 | } | |
544 | ||
545 | /* We now have the EVP_MD_CTX, lets do the | |
546 | * signing. */ | |
547 | memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp)); | |
548 | if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey))) | |
dfeab068 RE |
549 | { |
550 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB); | |
d02b48c6 | 551 | goto err; |
dfeab068 | 552 | } |
d02b48c6 RE |
553 | |
554 | sk=si->auth_attr; | |
dfeab068 RE |
555 | |
556 | /* If there are attributes, we add the digest | |
557 | * attribute and only sign the attributes */ | |
d02b48c6 RE |
558 | if ((sk != NULL) && (sk_num(sk) != 0)) |
559 | { | |
dfeab068 RE |
560 | unsigned char md_data[EVP_MAX_MD_SIZE]; |
561 | unsigned int md_len; | |
562 | ASN1_OCTET_STRING *digest; | |
563 | ASN1_UTCTIME *sign_time; | |
564 | EVP_MD *md_tmp; | |
565 | ||
566 | /* Add signing time */ | |
567 | sign_time=X509_gmtime_adj(NULL,0); | |
568 | PKCS7_add_signed_attribute(si, | |
569 | NID_pkcs9_signingTime, | |
570 | V_ASN1_UTCTIME,(char *)sign_time); | |
571 | ||
572 | /* Add digest */ | |
573 | md_tmp=EVP_MD_CTX_type(&ctx_tmp); | |
574 | EVP_DigestFinal(&ctx_tmp,md_data,&md_len); | |
575 | digest=ASN1_OCTET_STRING_new(); | |
576 | ASN1_OCTET_STRING_set(digest,md_data,md_len); | |
577 | PKCS7_add_signed_attribute(si,NID_pkcs9_messageDigest, | |
578 | V_ASN1_OCTET_STRING,(char *)digest); | |
579 | ||
580 | /* Now sign the mess */ | |
581 | EVP_SignInit(&ctx_tmp,md_tmp); | |
d02b48c6 RE |
582 | x=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE, |
583 | V_ASN1_SET,V_ASN1_UNIVERSAL); | |
dfeab068 | 584 | pp=(unsigned char *)Malloc(x); |
d02b48c6 RE |
585 | p=pp; |
586 | i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE, | |
587 | V_ASN1_SET,V_ASN1_UNIVERSAL); | |
588 | EVP_SignUpdate(&ctx_tmp,pp,x); | |
589 | Free(pp); | |
dfeab068 | 590 | pp=NULL; |
d02b48c6 RE |
591 | } |
592 | ||
dfeab068 RE |
593 | if (si->pkey->type == EVP_PKEY_DSA) |
594 | ctx_tmp.digest=EVP_dss1(); | |
595 | ||
58964a49 | 596 | if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data, |
d02b48c6 | 597 | (unsigned int *)&buf->length,si->pkey)) |
dfeab068 RE |
598 | { |
599 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB); | |
d02b48c6 | 600 | goto err; |
dfeab068 | 601 | } |
d02b48c6 RE |
602 | if (!ASN1_STRING_set(si->enc_digest, |
603 | (unsigned char *)buf->data,buf->length)) | |
d02b48c6 | 604 | { |
dfeab068 | 605 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB); |
d02b48c6 RE |
606 | goto err; |
607 | } | |
d02b48c6 | 608 | } |
d02b48c6 RE |
609 | } |
610 | ||
dfeab068 RE |
611 | if (p7->detached) |
612 | ASN1_OCTET_STRING_set(os,(unsigned char *)"",0); | |
613 | else | |
614 | { | |
615 | btmp=BIO_find_type(bio,BIO_TYPE_MEM); | |
616 | if (btmp == NULL) | |
617 | { | |
618 | PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO); | |
619 | goto err; | |
620 | } | |
621 | BIO_get_mem_ptr(btmp,&buf_mem); | |
622 | ASN1_OCTET_STRING_set(os, | |
623 | (unsigned char *)buf_mem->data,buf_mem->length); | |
624 | } | |
625 | if (pp != NULL) Free(pp); | |
626 | pp=NULL; | |
627 | ||
d02b48c6 RE |
628 | ret=1; |
629 | err: | |
630 | if (buf != NULL) BUF_MEM_free(buf); | |
631 | return(ret); | |
632 | } | |
633 | ||
634 | int PKCS7_dataVerify(cert_store,ctx,bio,p7,si) | |
635 | X509_STORE *cert_store; | |
636 | X509_STORE_CTX *ctx; | |
637 | BIO *bio; | |
638 | PKCS7 *p7; | |
639 | PKCS7_SIGNER_INFO *si; | |
640 | { | |
dfeab068 | 641 | /* PKCS7_SIGNED *s; */ |
d02b48c6 RE |
642 | ASN1_OCTET_STRING *os; |
643 | EVP_MD_CTX mdc_tmp,*mdc; | |
644 | unsigned char *pp,*p; | |
645 | PKCS7_ISSUER_AND_SERIAL *ias; | |
dfeab068 RE |
646 | int ret=0,i; |
647 | int md_type; | |
648 | STACK *sk,*cert; | |
d02b48c6 RE |
649 | BIO *btmp; |
650 | X509 *x509; | |
651 | ||
dfeab068 RE |
652 | if (PKCS7_type_is_signed(p7)) |
653 | { | |
654 | cert=p7->d.sign->cert; | |
655 | } | |
656 | else if (PKCS7_type_is_signedAndEnveloped(p7)) | |
657 | { | |
658 | cert=p7->d.signed_and_enveloped->cert; | |
659 | } | |
660 | else | |
661 | { | |
662 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE); | |
663 | goto err; | |
664 | } | |
58964a49 | 665 | /* XXXXXXXXXXXXXXXXXXXXXXX */ |
d02b48c6 | 666 | ias=si->issuer_and_serial; |
d02b48c6 | 667 | |
dfeab068 | 668 | x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial); |
d02b48c6 RE |
669 | |
670 | /* were we able to find the cert in passed to us */ | |
671 | if (x509 == NULL) | |
672 | { | |
673 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE); | |
674 | goto err; | |
675 | } | |
676 | ||
677 | /* Lets verify */ | |
dfeab068 | 678 | X509_STORE_CTX_init(ctx,cert_store,x509,cert); |
d02b48c6 | 679 | i=X509_verify_cert(ctx); |
dfeab068 RE |
680 | if (i <= 0) |
681 | { | |
682 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); | |
683 | goto err; | |
684 | } | |
d02b48c6 RE |
685 | X509_STORE_CTX_cleanup(ctx); |
686 | ||
687 | /* So we like 'x509', lets check the signature. */ | |
688 | md_type=OBJ_obj2nid(si->digest_alg->algorithm); | |
689 | ||
690 | btmp=bio; | |
691 | for (;;) | |
692 | { | |
693 | if ((btmp == NULL) || | |
694 | ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL)) | |
695 | { | |
696 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | |
697 | goto err; | |
698 | } | |
699 | BIO_get_md_ctx(btmp,&mdc); | |
700 | if (mdc == NULL) | |
701 | { | |
702 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_INTERNAL_ERROR); | |
703 | goto err; | |
704 | } | |
705 | if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type) | |
706 | break; | |
707 | btmp=btmp->next_bio; | |
708 | } | |
709 | ||
dfeab068 RE |
710 | /* mdc is the digest ctx that we want, unless there are attributes, |
711 | * in which case the digest is the signed attributes */ | |
d02b48c6 RE |
712 | memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp)); |
713 | ||
714 | sk=si->auth_attr; | |
715 | if ((sk != NULL) && (sk_num(sk) != 0)) | |
716 | { | |
dfeab068 RE |
717 | unsigned char md_dat[EVP_MAX_MD_SIZE]; |
718 | int md_len; | |
719 | ASN1_OCTET_STRING *message_digest; | |
720 | ||
721 | EVP_DigestFinal(&mdc_tmp,md_dat,&md_len); | |
722 | message_digest=PKCS7_digest_from_attributes(sk); | |
723 | if (!message_digest) | |
724 | { | |
725 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | |
726 | goto err; | |
727 | } | |
728 | if ((message_digest->length != md_len) || | |
729 | (memcmp(message_digest->data,md_dat,md_len))) | |
730 | { | |
731 | #if 0 | |
732 | { | |
733 | int ii; | |
734 | for (ii=0; ii<message_digest->length; ii++) | |
735 | printf("%02X",message_digest->data[ii]); printf(" sent\n"); | |
736 | for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n"); | |
737 | } | |
738 | #endif | |
739 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_DIGEST_FAILURE); | |
740 | ret= -1; | |
741 | goto err; | |
742 | } | |
743 | ||
744 | EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type)); | |
d02b48c6 RE |
745 | i=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE, |
746 | V_ASN1_SET,V_ASN1_UNIVERSAL); | |
dfeab068 | 747 | pp=(unsigned char *)Malloc(i); |
d02b48c6 RE |
748 | p=pp; |
749 | i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE, | |
750 | V_ASN1_SET,V_ASN1_UNIVERSAL); | |
751 | EVP_VerifyUpdate(&mdc_tmp,pp,i); | |
dfeab068 | 752 | Free(pp); |
d02b48c6 RE |
753 | } |
754 | ||
755 | os=si->enc_digest; | |
dfeab068 RE |
756 | if (X509_get_pubkey(x509)->type == EVP_PKEY_DSA) |
757 | mdc_tmp.digest=EVP_dss1(); | |
758 | ||
d02b48c6 RE |
759 | i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, |
760 | X509_get_pubkey(x509)); | |
761 | if (i <= 0) | |
762 | { | |
763 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_SIGNATURE_FAILURE); | |
764 | ret= -1; | |
765 | goto err; | |
766 | } | |
767 | else | |
768 | ret=1; | |
769 | err: | |
770 | return(ret); | |
771 | } | |
772 | ||
dfeab068 RE |
773 | PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(p7,idx) |
774 | PKCS7 *p7; | |
775 | int idx; | |
776 | { | |
777 | STACK *rsk; | |
778 | PKCS7_RECIP_INFO *ri; | |
779 | int i; | |
780 | ||
781 | i=OBJ_obj2nid(p7->type); | |
782 | if (i != NID_pkcs7_signedAndEnveloped) return(NULL); | |
783 | rsk=p7->d.signed_and_enveloped->recipientinfo; | |
784 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,0); | |
785 | if (sk_num(rsk) <= idx) return(NULL); | |
786 | ri=(PKCS7_RECIP_INFO *)sk_value(rsk,idx); | |
787 | return(ri->issuer_and_serial); | |
788 | } | |
789 | ||
790 | ASN1_TYPE *PKCS7_get_signed_attribute(si,nid) | |
791 | PKCS7_SIGNER_INFO *si; | |
792 | int nid; | |
793 | { | |
794 | return(get_attribute(si->auth_attr,nid)); | |
795 | } | |
796 | ||
797 | ASN1_TYPE *PKCS7_get_attribute(si,nid) | |
798 | PKCS7_SIGNER_INFO *si; | |
799 | int nid; | |
800 | { | |
801 | return(get_attribute(si->unauth_attr,nid)); | |
802 | } | |
803 | ||
804 | static ASN1_TYPE *get_attribute(sk,nid) | |
805 | STACK *sk; | |
806 | int nid; | |
807 | { | |
808 | int i; | |
809 | X509_ATTRIBUTE *xa; | |
810 | ASN1_OBJECT *o; | |
811 | ||
812 | o=OBJ_nid2obj(nid); | |
813 | if (o == NULL) return(NULL); | |
814 | for (i=0; i<sk_num(sk); i++) | |
815 | { | |
816 | xa=(X509_ATTRIBUTE *)sk_value(sk,i); | |
817 | if (OBJ_cmp(xa->object,o) == 0) | |
818 | { | |
819 | if (xa->set && sk_num(xa->value.set)) | |
820 | return((ASN1_TYPE *)sk_value(xa->value.set,0)); | |
821 | else | |
822 | return(NULL); | |
823 | } | |
824 | } | |
825 | return(NULL); | |
826 | } | |
827 | ||
828 | ASN1_OCTET_STRING *PKCS7_digest_from_attributes(sk) | |
829 | STACK *sk; | |
830 | { | |
831 | X509_ATTRIBUTE *attr; | |
832 | ASN1_TYPE *astype; | |
833 | int i; | |
834 | if (!sk || !sk_num(sk)) return NULL; | |
835 | /* Search the attributes for a digest */ | |
836 | for (i = 0; i < sk_num(sk); i++) | |
837 | { | |
838 | attr = (X509_ATTRIBUTE *) sk_value(sk, i); | |
839 | if (OBJ_obj2nid(attr->object) == NID_pkcs9_messageDigest) | |
840 | { | |
841 | if (!attr->set) return NULL; | |
842 | if (!attr->value.set || | |
843 | !sk_num (attr->value.set) ) return NULL; | |
844 | astype = (ASN1_TYPE *) sk_value(attr->value.set, 0); | |
845 | return astype->value.octet_string; | |
846 | } | |
847 | } | |
848 | return NULL; | |
849 | } | |
850 | ||
851 | int PKCS7_set_signed_attributes(p7si,sk) | |
852 | PKCS7_SIGNER_INFO *p7si; | |
853 | STACK *sk; | |
854 | { | |
855 | int i; | |
856 | ||
857 | if (p7si->auth_attr != NULL) | |
858 | sk_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free); | |
859 | p7si->auth_attr=sk_dup(sk); | |
860 | for (i=0; i<sk_num(sk); i++) | |
861 | { | |
862 | if ((sk_value(p7si->auth_attr,i)=(char *)X509_ATTRIBUTE_dup( | |
863 | (X509_ATTRIBUTE *)sk_value(sk,i))) == NULL) | |
864 | return(0); | |
865 | } | |
866 | return(1); | |
867 | } | |
868 | ||
869 | int PKCS7_set_attributes(p7si,sk) | |
870 | PKCS7_SIGNER_INFO *p7si; | |
871 | STACK *sk; | |
872 | { | |
873 | int i; | |
874 | ||
875 | if (p7si->unauth_attr != NULL) | |
876 | sk_pop_free(p7si->unauth_attr,X509_ATTRIBUTE_free); | |
877 | p7si->unauth_attr=sk_dup(sk); | |
878 | for (i=0; i<sk_num(sk); i++) | |
879 | { | |
880 | if ((sk_value(p7si->unauth_attr,i)=(char *)X509_ATTRIBUTE_dup( | |
881 | (X509_ATTRIBUTE *)sk_value(sk,i))) == NULL) | |
882 | return(0); | |
883 | } | |
884 | return(1); | |
885 | } | |
886 | ||
887 | int PKCS7_add_signed_attribute(p7si,nid,atrtype,value) | |
888 | PKCS7_SIGNER_INFO *p7si; | |
889 | int nid; | |
890 | int atrtype; | |
891 | char *value; | |
892 | { | |
893 | return(add_attribute(&(p7si->auth_attr),nid,atrtype,value)); | |
894 | } | |
895 | ||
896 | int PKCS7_add_attribute(p7si,nid,atrtype,value) | |
897 | PKCS7_SIGNER_INFO *p7si; | |
898 | int nid; | |
899 | int atrtype; | |
900 | char *value; | |
901 | { | |
902 | return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value)); | |
903 | } | |
904 | ||
905 | static int add_attribute(sk, nid, atrtype, value) | |
906 | STACK **sk; | |
907 | int nid; | |
908 | int atrtype; | |
909 | char *value; | |
910 | { | |
911 | X509_ATTRIBUTE *attr=NULL; | |
912 | ASN1_TYPE *val=NULL; | |
913 | ||
914 | if (*sk == NULL) | |
915 | { | |
916 | *sk = sk_new(NULL); | |
917 | new_attrib: | |
918 | attr=X509_ATTRIBUTE_create(nid,atrtype,value); | |
919 | sk_push(*sk,(char *)attr); | |
920 | } | |
921 | else | |
922 | { | |
923 | int i; | |
924 | ||
925 | for (i=0; i<sk_num(*sk); i++) | |
926 | { | |
927 | attr=(X509_ATTRIBUTE *)sk_value(*sk,i); | |
928 | if (OBJ_obj2nid(attr->object) == nid) | |
929 | { | |
930 | X509_ATTRIBUTE_free(attr); | |
931 | attr=X509_ATTRIBUTE_create(nid,atrtype,value); | |
932 | sk_value(*sk,i)=(char *)attr; | |
933 | goto end; | |
934 | } | |
935 | } | |
936 | goto new_attrib; | |
937 | } | |
938 | end: | |
939 | return(1); | |
940 | } | |
941 |