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Diffstat (limited to 'src/lib/libcrypto/pkcs7/pk7_doit.c')
-rw-r--r--src/lib/libcrypto/pkcs7/pk7_doit.c833
1 files changed, 702 insertions, 131 deletions
diff --git a/src/lib/libcrypto/pkcs7/pk7_doit.c b/src/lib/libcrypto/pkcs7/pk7_doit.c
index b5689b3fe4..4a4ff340ce 100644
--- a/src/lib/libcrypto/pkcs7/pk7_doit.c
+++ b/src/lib/libcrypto/pkcs7/pk7_doit.c
@@ -58,20 +58,56 @@
58 58
59#include <stdio.h> 59#include <stdio.h>
60#include "cryptlib.h" 60#include "cryptlib.h"
61#include "rand.h" 61#include <openssl/rand.h>
62#include "objects.h" 62#include <openssl/objects.h>
63#include "x509.h" 63#include <openssl/x509.h>
64#include <openssl/x509v3.h>
64 65
65BIO *PKCS7_dataInit(p7,bio) 66static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
66PKCS7 *p7; 67 void *value);
67BIO *bio; 68static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid);
69
70static int PKCS7_type_is_other(PKCS7* p7)
71 {
72 int isOther=1;
73
74 int nid=OBJ_obj2nid(p7->type);
75
76 switch( nid )
77 {
78 case NID_pkcs7_data:
79 case NID_pkcs7_signed:
80 case NID_pkcs7_enveloped:
81 case NID_pkcs7_signedAndEnveloped:
82 case NID_pkcs7_digest:
83 case NID_pkcs7_encrypted:
84 isOther=0;
85 break;
86 default:
87 isOther=1;
88 }
89
90 return isOther;
91
92 }
93
94static int PKCS7_type_is_octet_string(PKCS7* p7)
95 {
96 if ( 0==PKCS7_type_is_other(p7) )
97 return 0;
98
99 return (V_ASN1_OCTET_STRING==p7->d.other->type) ? 1 : 0;
100 }
101
102BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
68 { 103 {
69 int i,j; 104 int i,j;
70 BIO *out=NULL,*btmp; 105 BIO *out=NULL,*btmp=NULL;
71 X509_ALGOR *xa; 106 X509_ALGOR *xa;
72 EVP_MD *evp_md; 107 const EVP_MD *evp_md;
73 EVP_CIPHER *evp_cipher=NULL; 108 const EVP_CIPHER *evp_cipher=NULL;
74 STACK *md_sk=NULL,*rsk=NULL; 109 STACK_OF(X509_ALGOR) *md_sk=NULL;
110 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
75 X509_ALGOR *xalg=NULL; 111 X509_ALGOR *xalg=NULL;
76 PKCS7_RECIP_INFO *ri=NULL; 112 PKCS7_RECIP_INFO *ri=NULL;
77 EVP_PKEY *pkey; 113 EVP_PKEY *pkey;
@@ -87,13 +123,25 @@ BIO *bio;
87 case NID_pkcs7_signedAndEnveloped: 123 case NID_pkcs7_signedAndEnveloped:
88 rsk=p7->d.signed_and_enveloped->recipientinfo; 124 rsk=p7->d.signed_and_enveloped->recipientinfo;
89 md_sk=p7->d.signed_and_enveloped->md_algs; 125 md_sk=p7->d.signed_and_enveloped->md_algs;
90 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(p7->d.signed_and_enveloped->enc_data->algorithm->algorithm))); 126 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
127 evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher;
91 if (evp_cipher == NULL) 128 if (evp_cipher == NULL)
92 { 129 {
93 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); 130 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
131 PKCS7_R_CIPHER_NOT_INITIALIZED);
132 goto err;
133 }
134 break;
135 case NID_pkcs7_enveloped:
136 rsk=p7->d.enveloped->recipientinfo;
137 xalg=p7->d.enveloped->enc_data->algorithm;
138 evp_cipher=p7->d.enveloped->enc_data->cipher;
139 if (evp_cipher == NULL)
140 {
141 PKCS7err(PKCS7_F_PKCS7_DATAINIT,
142 PKCS7_R_CIPHER_NOT_INITIALIZED);
94 goto err; 143 goto err;
95 } 144 }
96 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
97 break; 145 break;
98 default: 146 default:
99 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); 147 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
@@ -102,10 +150,14 @@ BIO *bio;
102 150
103 if (md_sk != NULL) 151 if (md_sk != NULL)
104 { 152 {
105 for (i=0; i<sk_num(md_sk); i++) 153 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
106 { 154 {
107 xa=(X509_ALGOR *)sk_value(md_sk,i); 155 xa=sk_X509_ALGOR_value(md_sk,i);
108 if ((btmp=BIO_new(BIO_f_md())) == NULL) goto err; 156 if ((btmp=BIO_new(BIO_f_md())) == NULL)
157 {
158 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
159 goto err;
160 }
109 161
110 j=OBJ_obj2nid(xa->algorithm); 162 j=OBJ_obj2nid(xa->algorithm);
111 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j)); 163 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
@@ -120,6 +172,7 @@ BIO *bio;
120 out=btmp; 172 out=btmp;
121 else 173 else
122 BIO_push(out,btmp); 174 BIO_push(out,btmp);
175 btmp=NULL;
123 } 176 }
124 } 177 }
125 178
@@ -130,79 +183,323 @@ BIO *bio;
130 int keylen,ivlen; 183 int keylen,ivlen;
131 int jj,max; 184 int jj,max;
132 unsigned char *tmp; 185 unsigned char *tmp;
186 EVP_CIPHER_CTX *ctx;
133 187
134 if ((btmp=BIO_new(BIO_f_cipher())) == NULL) goto err; 188 if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
189 {
190 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB);
191 goto err;
192 }
193 BIO_get_cipher_ctx(btmp, &ctx);
135 keylen=EVP_CIPHER_key_length(evp_cipher); 194 keylen=EVP_CIPHER_key_length(evp_cipher);
136 ivlen=EVP_CIPHER_iv_length(evp_cipher); 195 ivlen=EVP_CIPHER_iv_length(evp_cipher);
137 196 if (RAND_bytes(key,keylen) <= 0)
138 if (ivlen > 0) 197 goto err;
139 { 198 xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
140 ASN1_OCTET_STRING *os; 199 if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
141 200 EVP_CipherInit_ex(ctx, evp_cipher, NULL, key, iv, 1);
142 RAND_bytes(iv,ivlen); 201
143 os=ASN1_OCTET_STRING_new(); 202 if (ivlen > 0) {
144 ASN1_OCTET_STRING_set(os,iv,ivlen); 203 if (xalg->parameter == NULL)
145 /* ASN1_TYPE_set(xalg->parameter,V_ASN1_OCTET_STRING, 204 xalg->parameter=ASN1_TYPE_new();
146 (char *)os); 205 if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
147 */ } 206 goto err;
148 RAND_bytes(key,keylen); 207 }
149 208
150 /* Lets do the pub key stuff :-) */ 209 /* Lets do the pub key stuff :-) */
151 max=0; 210 max=0;
152 for (i=0; i<sk_num(rsk); i++) 211 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
153 { 212 {
154 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i); 213 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
155 if (ri->cert == NULL) abort(); 214 if (ri->cert == NULL)
215 {
216 PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
217 goto err;
218 }
156 pkey=X509_get_pubkey(ri->cert); 219 pkey=X509_get_pubkey(ri->cert);
157 jj=EVP_PKEY_size(pkey); 220 jj=EVP_PKEY_size(pkey);
221 EVP_PKEY_free(pkey);
158 if (max < jj) max=jj; 222 if (max < jj) max=jj;
159 } 223 }
160 if ((tmp=(unsigned char *)Malloc(max)) == NULL) abort(); 224 if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
161 for (i=0; i<sk_num(rsk); i++)
162 { 225 {
163 ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i); 226 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
227 goto err;
228 }
229 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
230 {
231 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
164 pkey=X509_get_pubkey(ri->cert); 232 pkey=X509_get_pubkey(ri->cert);
165 jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey); 233 jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
166 if (jj <= 0) abort(); 234 EVP_PKEY_free(pkey);
167 ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj); 235 if (jj <= 0)
236 {
237 PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
238 OPENSSL_free(tmp);
239 goto err;
240 }
241 M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
168 } 242 }
169 243 OPENSSL_free(tmp);
170 BIO_set_cipher(btmp,evp_cipher,key,iv,1); 244 memset(key, 0, keylen);
171 245
172 if (out == NULL) 246 if (out == NULL)
173 out=btmp; 247 out=btmp;
174 else 248 else
175 BIO_push(out,btmp); 249 BIO_push(out,btmp);
250 btmp=NULL;
176 } 251 }
177 252
178 if (bio == NULL) /* ??????????? */ 253 if (bio == NULL) {
179 { 254 if (PKCS7_is_detached(p7))
180 if (p7->detached)
181 bio=BIO_new(BIO_s_null()); 255 bio=BIO_new(BIO_s_null());
182 else 256 else {
257 if (PKCS7_type_is_signed(p7) ) {
258 if ( PKCS7_type_is_data(p7->d.sign->contents)) {
259 ASN1_OCTET_STRING *os;
260 os=p7->d.sign->contents->d.data;
261 if (os->length > 0)
262 bio = BIO_new_mem_buf(os->data, os->length);
263 }
264 else if ( PKCS7_type_is_octet_string(p7->d.sign->contents) ) {
265 ASN1_OCTET_STRING *os;
266 os=p7->d.sign->contents->d.other->value.octet_string;
267 if (os->length > 0)
268 bio = BIO_new_mem_buf(os->data, os->length);
269 }
270 }
271 if(bio == NULL) {
272 bio=BIO_new(BIO_s_mem());
273 BIO_set_mem_eof_return(bio,0);
274 }
275 }
276 }
277 BIO_push(out,bio);
278 bio=NULL;
279 if (0)
280 {
281err:
282 if (out != NULL)
283 BIO_free_all(out);
284 if (btmp != NULL)
285 BIO_free_all(btmp);
286 out=NULL;
287 }
288 return(out);
289 }
290
291/* int */
292BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
293 {
294 int i,j;
295 BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL;
296 unsigned char *tmp=NULL;
297 X509_ALGOR *xa;
298 ASN1_OCTET_STRING *data_body=NULL;
299 const EVP_MD *evp_md;
300 const EVP_CIPHER *evp_cipher=NULL;
301 EVP_CIPHER_CTX *evp_ctx=NULL;
302 X509_ALGOR *enc_alg=NULL;
303 STACK_OF(X509_ALGOR) *md_sk=NULL;
304 STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL;
305 X509_ALGOR *xalg=NULL;
306 PKCS7_RECIP_INFO *ri=NULL;
307
308 i=OBJ_obj2nid(p7->type);
309 p7->state=PKCS7_S_HEADER;
310
311 switch (i)
312 {
313 case NID_pkcs7_signed:
314 data_body=p7->d.sign->contents->d.data;
315 md_sk=p7->d.sign->md_algs;
316 break;
317 case NID_pkcs7_signedAndEnveloped:
318 rsk=p7->d.signed_and_enveloped->recipientinfo;
319 md_sk=p7->d.signed_and_enveloped->md_algs;
320 data_body=p7->d.signed_and_enveloped->enc_data->enc_data;
321 enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm;
322 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
323 if (evp_cipher == NULL)
183 { 324 {
184 bio=BIO_new(BIO_s_mem()); 325 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
185 if (PKCS7_type_is_signed(p7) && 326 goto err;
186 PKCS7_type_is_data(p7->d.sign->contents)) 327 }
328 xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
329 break;
330 case NID_pkcs7_enveloped:
331 rsk=p7->d.enveloped->recipientinfo;
332 enc_alg=p7->d.enveloped->enc_data->algorithm;
333 data_body=p7->d.enveloped->enc_data->enc_data;
334 evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
335 if (evp_cipher == NULL)
336 {
337 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
338 goto err;
339 }
340 xalg=p7->d.enveloped->enc_data->algorithm;
341 break;
342 default:
343 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
344 goto err;
345 }
346
347 /* We will be checking the signature */
348 if (md_sk != NULL)
349 {
350 for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
351 {
352 xa=sk_X509_ALGOR_value(md_sk,i);
353 if ((btmp=BIO_new(BIO_f_md())) == NULL)
187 { 354 {
188 ASN1_OCTET_STRING *os; 355 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
356 goto err;
357 }
189 358
190 os=p7->d.sign->contents->d.data; 359 j=OBJ_obj2nid(xa->algorithm);
191 if (os->length > 0) 360 evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
192 BIO_write(bio,(char *)os->data, 361 if (evp_md == NULL)
193 os->length); 362 {
363 PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
364 goto err;
194 } 365 }
366
367 BIO_set_md(btmp,evp_md);
368 if (out == NULL)
369 out=btmp;
370 else
371 BIO_push(out,btmp);
372 btmp=NULL;
195 } 373 }
196 } 374 }
375
376 if (evp_cipher != NULL)
377 {
378#if 0
379 unsigned char key[EVP_MAX_KEY_LENGTH];
380 unsigned char iv[EVP_MAX_IV_LENGTH];
381 unsigned char *p;
382 int keylen,ivlen;
383 int max;
384 X509_OBJECT ret;
385#endif
386 int jj;
387
388 if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
389 {
390 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
391 goto err;
392 }
393
394 /* It was encrypted, we need to decrypt the secret key
395 * with the private key */
396
397 /* Find the recipientInfo which matches the passed certificate
398 * (if any)
399 */
400
401 for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
402 ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
403 if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
404 pcert->cert_info->issuer) &&
405 !M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
406 ri->issuer_and_serial->serial)) break;
407 ri=NULL;
408 }
409 if (ri == NULL) {
410 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
411 PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
412 goto err;
413 }
414
415 jj=EVP_PKEY_size(pkey);
416 tmp=(unsigned char *)OPENSSL_malloc(jj+10);
417 if (tmp == NULL)
418 {
419 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
420 goto err;
421 }
422
423 jj=EVP_PKEY_decrypt(tmp, M_ASN1_STRING_data(ri->enc_key),
424 M_ASN1_STRING_length(ri->enc_key), pkey);
425 if (jj <= 0)
426 {
427 PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
428 goto err;
429 }
430
431 evp_ctx=NULL;
432 BIO_get_cipher_ctx(etmp,&evp_ctx);
433 EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0);
434 if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
435 goto err;
436
437 if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
438 /* Some S/MIME clients don't use the same key
439 * and effective key length. The key length is
440 * determined by the size of the decrypted RSA key.
441 */
442 if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, jj))
443 {
444 PKCS7err(PKCS7_F_PKCS7_DATADECODE,
445 PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH);
446 goto err;
447 }
448 }
449 EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0);
450
451 memset(tmp,0,jj);
452
453 if (out == NULL)
454 out=etmp;
455 else
456 BIO_push(out,etmp);
457 etmp=NULL;
458 }
459
460#if 1
461 if (PKCS7_is_detached(p7) || (in_bio != NULL))
462 {
463 bio=in_bio;
464 }
465 else
466 {
467#if 0
468 bio=BIO_new(BIO_s_mem());
469 /* We need to set this so that when we have read all
470 * the data, the encrypt BIO, if present, will read
471 * EOF and encode the last few bytes */
472 BIO_set_mem_eof_return(bio,0);
473
474 if (data_body->length > 0)
475 BIO_write(bio,(char *)data_body->data,data_body->length);
476#else
477 if (data_body->length > 0)
478 bio = BIO_new_mem_buf(data_body->data,data_body->length);
479 else {
480 bio=BIO_new(BIO_s_mem());
481 BIO_set_mem_eof_return(bio,0);
482 }
483#endif
484 }
197 BIO_push(out,bio); 485 BIO_push(out,bio);
198 return(out); 486 bio=NULL;
487#endif
488 if (0)
489 {
199err: 490err:
200 return(NULL); 491 if (out != NULL) BIO_free_all(out);
492 if (btmp != NULL) BIO_free_all(btmp);
493 if (etmp != NULL) BIO_free_all(etmp);
494 if (bio != NULL) BIO_free_all(bio);
495 out=NULL;
496 }
497 if (tmp != NULL)
498 OPENSSL_free(tmp);
499 return(out);
201 } 500 }
202 501
203int PKCS7_dataSign(p7,bio) 502int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
204PKCS7 *p7;
205BIO *bio;
206 { 503 {
207 int ret=0; 504 int ret=0;
208 int i,j; 505 int i,j;
@@ -211,11 +508,11 @@ BIO *bio;
211 BUF_MEM *buf=NULL; 508 BUF_MEM *buf=NULL;
212 PKCS7_SIGNER_INFO *si; 509 PKCS7_SIGNER_INFO *si;
213 EVP_MD_CTX *mdc,ctx_tmp; 510 EVP_MD_CTX *mdc,ctx_tmp;
214 STACK *sk,*si_sk=NULL; 511 STACK_OF(X509_ATTRIBUTE) *sk;
215 unsigned char *p,*pp=NULL; 512 STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
216 int x;
217 ASN1_OCTET_STRING *os=NULL; 513 ASN1_OCTET_STRING *os=NULL;
218 514
515 EVP_MD_CTX_init(&ctx_tmp);
219 i=OBJ_obj2nid(p7->type); 516 i=OBJ_obj2nid(p7->type);
220 p7->state=PKCS7_S_HEADER; 517 p7->state=PKCS7_S_HEADER;
221 518
@@ -224,25 +521,38 @@ BIO *bio;
224 case NID_pkcs7_signedAndEnveloped: 521 case NID_pkcs7_signedAndEnveloped:
225 /* XXXXXXXXXXXXXXXX */ 522 /* XXXXXXXXXXXXXXXX */
226 si_sk=p7->d.signed_and_enveloped->signer_info; 523 si_sk=p7->d.signed_and_enveloped->signer_info;
227 os=ASN1_OCTET_STRING_new(); 524 os=M_ASN1_OCTET_STRING_new();
228 p7->d.signed_and_enveloped->enc_data->enc_data=os; 525 p7->d.signed_and_enveloped->enc_data->enc_data=os;
229 break; 526 break;
527 case NID_pkcs7_enveloped:
528 /* XXXXXXXXXXXXXXXX */
529 os=M_ASN1_OCTET_STRING_new();
530 p7->d.enveloped->enc_data->enc_data=os;
531 break;
230 case NID_pkcs7_signed: 532 case NID_pkcs7_signed:
231 si_sk=p7->d.sign->signer_info; 533 si_sk=p7->d.sign->signer_info;
232 os=p7->d.sign->contents->d.data; 534 os=p7->d.sign->contents->d.data;
535 /* If detached data then the content is excluded */
536 if(p7->detached) {
537 M_ASN1_OCTET_STRING_free(os);
538 p7->d.sign->contents->d.data = NULL;
539 }
233 break; 540 break;
234 } 541 }
235 542
236 if (si_sk != NULL) 543 if (si_sk != NULL)
237 { 544 {
238 if ((buf=BUF_MEM_new()) == NULL) goto err; 545 if ((buf=BUF_MEM_new()) == NULL)
239 for (i=0; i<sk_num(si_sk); i++)
240 { 546 {
241 si=(PKCS7_SIGNER_INFO *) 547 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
242 sk_value(si_sk,i); 548 goto err;
243 if (si->pkey == NULL) 549 }
244 continue; 550 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
245 j=OBJ_obj2nid(si->digest_enc_alg->algorithm); 551 {
552 si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
553 if (si->pkey == NULL) continue;
554
555 j=OBJ_obj2nid(si->digest_alg->algorithm);
246 556
247 btmp=bio; 557 btmp=bio;
248 for (;;) 558 for (;;)
@@ -256,88 +566,137 @@ BIO *bio;
256 BIO_get_md_ctx(btmp,&mdc); 566 BIO_get_md_ctx(btmp,&mdc);
257 if (mdc == NULL) 567 if (mdc == NULL)
258 { 568 {
259 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR); 569 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_INTERNAL_ERROR);
260 goto err; 570 goto err;
261 } 571 }
262 if (EVP_MD_pkey_type(EVP_MD_CTX_type(mdc)) == j) 572 if (EVP_MD_CTX_type(mdc) == j)
263 break; 573 break;
264 else 574 else
265 btmp=btmp->next_bio; 575 btmp=BIO_next(btmp);
266 } 576 }
267 577
268 /* We now have the EVP_MD_CTX, lets do the 578 /* We now have the EVP_MD_CTX, lets do the
269 * signing. */ 579 * signing. */
270 memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp)); 580 EVP_MD_CTX_copy_ex(&ctx_tmp,mdc);
271 if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey))) 581 if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
582 {
583 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
272 goto err; 584 goto err;
585 }
273 586
274 sk=si->auth_attr; 587 sk=si->auth_attr;
275 if ((sk != NULL) && (sk_num(sk) != 0)) 588
589 /* If there are attributes, we add the digest
590 * attribute and only sign the attributes */
591 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
276 { 592 {
277 x=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE, 593 unsigned char md_data[EVP_MAX_MD_SIZE], *abuf=NULL;
278 V_ASN1_SET,V_ASN1_UNIVERSAL); 594 unsigned int md_len, alen;
279 pp=(unsigned char *)Malloc(i); 595 ASN1_OCTET_STRING *digest;
280 p=pp; 596 ASN1_UTCTIME *sign_time;
281 i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE, 597 const EVP_MD *md_tmp;
282 V_ASN1_SET,V_ASN1_UNIVERSAL); 598
283 EVP_SignUpdate(&ctx_tmp,pp,x); 599 /* Add signing time if not already present */
284 Free(pp); 600 if (!PKCS7_get_signed_attribute(si,
601 NID_pkcs9_signingTime))
602 {
603 sign_time=X509_gmtime_adj(NULL,0);
604 PKCS7_add_signed_attribute(si,
605 NID_pkcs9_signingTime,
606 V_ASN1_UTCTIME,sign_time);
607 }
608
609 /* Add digest */
610 md_tmp=EVP_MD_CTX_md(&ctx_tmp);
611 EVP_DigestFinal_ex(&ctx_tmp,md_data,&md_len);
612 digest=M_ASN1_OCTET_STRING_new();
613 M_ASN1_OCTET_STRING_set(digest,md_data,md_len);
614 PKCS7_add_signed_attribute(si,
615 NID_pkcs9_messageDigest,
616 V_ASN1_OCTET_STRING,digest);
617
618 /* Now sign the attributes */
619 EVP_SignInit_ex(&ctx_tmp,md_tmp,NULL);
620 alen = ASN1_item_i2d((ASN1_VALUE *)sk,&abuf,
621 ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
622 if(!abuf) goto err;
623 EVP_SignUpdate(&ctx_tmp,abuf,alen);
624 OPENSSL_free(abuf);
285 } 625 }
286 626
627#ifndef OPENSSL_NO_DSA
628 if (si->pkey->type == EVP_PKEY_DSA)
629 ctx_tmp.digest=EVP_dss1();
630#endif
631
287 if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data, 632 if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
288 (unsigned int *)&buf->length,si->pkey)) 633 (unsigned int *)&buf->length,si->pkey))
634 {
635 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
289 goto err; 636 goto err;
637 }
290 if (!ASN1_STRING_set(si->enc_digest, 638 if (!ASN1_STRING_set(si->enc_digest,
291 (unsigned char *)buf->data,buf->length)) 639 (unsigned char *)buf->data,buf->length))
292 goto err;
293 }
294 if (p7->detached)
295 ASN1_OCTET_STRING_set(os,(unsigned char *)"",0);
296 else
297 {
298 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
299 if (btmp == NULL)
300 { 640 {
301 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO); 641 PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
302 goto err; 642 goto err;
303 } 643 }
304 BIO_get_mem_ptr(btmp,&buf_mem);
305 ASN1_OCTET_STRING_set(os,
306 (unsigned char *)buf_mem->data,buf_mem->length);
307 } 644 }
308 if (pp != NULL) Free(pp);
309 pp=NULL;
310 } 645 }
311 646
647 if (!PKCS7_is_detached(p7))
648 {
649 btmp=BIO_find_type(bio,BIO_TYPE_MEM);
650 if (btmp == NULL)
651 {
652 PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
653 goto err;
654 }
655 BIO_get_mem_ptr(btmp,&buf_mem);
656 /* Mark the BIO read only then we can use its copy of the data
657 * instead of making an extra copy.
658 */
659 BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
660 BIO_set_mem_eof_return(btmp, 0);
661 os->data = (unsigned char *)buf_mem->data;
662 os->length = buf_mem->length;
663#if 0
664 M_ASN1_OCTET_STRING_set(os,
665 (unsigned char *)buf_mem->data,buf_mem->length);
666#endif
667 }
312 ret=1; 668 ret=1;
313err: 669err:
670 EVP_MD_CTX_cleanup(&ctx_tmp);
314 if (buf != NULL) BUF_MEM_free(buf); 671 if (buf != NULL) BUF_MEM_free(buf);
315 return(ret); 672 return(ret);
316 } 673 }
317 674
318int PKCS7_dataVerify(cert_store,ctx,bio,p7,si) 675int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
319X509_STORE *cert_store; 676 PKCS7 *p7, PKCS7_SIGNER_INFO *si)
320X509_STORE_CTX *ctx;
321BIO *bio;
322PKCS7 *p7;
323PKCS7_SIGNER_INFO *si;
324 { 677 {
325 PKCS7_SIGNED *s;
326 ASN1_OCTET_STRING *os;
327 EVP_MD_CTX mdc_tmp,*mdc;
328 unsigned char *pp,*p;
329 PKCS7_ISSUER_AND_SERIAL *ias; 678 PKCS7_ISSUER_AND_SERIAL *ias;
330 int ret=0,md_type,i; 679 int ret=0,i;
331 STACK *sk; 680 STACK_OF(X509) *cert;
332 BIO *btmp;
333 X509 *x509; 681 X509 *x509;
334 682
335 if (!PKCS7_type_is_signed(p7)) abort(); 683 if (PKCS7_type_is_signed(p7))
684 {
685 cert=p7->d.sign->cert;
686 }
687 else if (PKCS7_type_is_signedAndEnveloped(p7))
688 {
689 cert=p7->d.signed_and_enveloped->cert;
690 }
691 else
692 {
693 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE);
694 goto err;
695 }
336 /* XXXXXXXXXXXXXXXXXXXXXXX */ 696 /* XXXXXXXXXXXXXXXXXXXXXXX */
337 ias=si->issuer_and_serial; 697 ias=si->issuer_and_serial;
338 s=p7->d.sign;
339 698
340 x509=X509_find_by_issuer_and_serial(s->cert,ias->issuer,ias->serial); 699 x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial);
341 700
342 /* were we able to find the cert in passed to us */ 701 /* were we able to find the cert in passed to us */
343 if (x509 == NULL) 702 if (x509 == NULL)
@@ -347,12 +706,46 @@ PKCS7_SIGNER_INFO *si;
347 } 706 }
348 707
349 /* Lets verify */ 708 /* Lets verify */
350 X509_STORE_CTX_init(ctx,cert_store,x509,s->cert); 709 if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert))
710 {
711 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
712 goto err;
713 }
714 X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN);
351 i=X509_verify_cert(ctx); 715 i=X509_verify_cert(ctx);
352 if (i <= 0) goto err; 716 if (i <= 0)
717 {
718 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
719 X509_STORE_CTX_cleanup(ctx);
720 goto err;
721 }
353 X509_STORE_CTX_cleanup(ctx); 722 X509_STORE_CTX_cleanup(ctx);
354 723
355 /* So we like 'x509', lets check the signature. */ 724 return PKCS7_signatureVerify(bio, p7, si, x509);
725 err:
726 return ret;
727 }
728
729int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
730 X509 *x509)
731 {
732 ASN1_OCTET_STRING *os;
733 EVP_MD_CTX mdc_tmp,*mdc;
734 int ret=0,i;
735 int md_type;
736 STACK_OF(X509_ATTRIBUTE) *sk;
737 BIO *btmp;
738 EVP_PKEY *pkey;
739
740 EVP_MD_CTX_init(&mdc_tmp);
741
742 if (!PKCS7_type_is_signed(p7) &&
743 !PKCS7_type_is_signedAndEnveloped(p7)) {
744 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
745 PKCS7_R_WRONG_PKCS7_TYPE);
746 goto err;
747 }
748
356 md_type=OBJ_obj2nid(si->digest_alg->algorithm); 749 md_type=OBJ_obj2nid(si->digest_alg->algorithm);
357 750
358 btmp=bio; 751 btmp=bio;
@@ -361,48 +754,226 @@ PKCS7_SIGNER_INFO *si;
361 if ((btmp == NULL) || 754 if ((btmp == NULL) ||
362 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL)) 755 ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
363 { 756 {
364 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); 757 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
758 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
365 goto err; 759 goto err;
366 } 760 }
367 BIO_get_md_ctx(btmp,&mdc); 761 BIO_get_md_ctx(btmp,&mdc);
368 if (mdc == NULL) 762 if (mdc == NULL)
369 { 763 {
370 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_INTERNAL_ERROR); 764 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
765 ERR_R_INTERNAL_ERROR);
371 goto err; 766 goto err;
372 } 767 }
373 if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type) 768 if (EVP_MD_CTX_type(mdc) == md_type)
374 break; 769 break;
375 btmp=btmp->next_bio; 770 btmp=BIO_next(btmp);
376 } 771 }
377 772
378 /* mdc is the digest ctx that we want */ 773 /* mdc is the digest ctx that we want, unless there are attributes,
379 memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp)); 774 * in which case the digest is the signed attributes */
775 EVP_MD_CTX_copy_ex(&mdc_tmp,mdc);
380 776
381 sk=si->auth_attr; 777 sk=si->auth_attr;
382 if ((sk != NULL) && (sk_num(sk) != 0)) 778 if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
383 { 779 {
384 i=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE, 780 unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL;
385 V_ASN1_SET,V_ASN1_UNIVERSAL); 781 unsigned int md_len, alen;
386 pp=(unsigned char *)malloc(i); 782 ASN1_OCTET_STRING *message_digest;
387 p=pp; 783
388 i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE, 784 EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len);
389 V_ASN1_SET,V_ASN1_UNIVERSAL); 785 message_digest=PKCS7_digest_from_attributes(sk);
390 EVP_VerifyUpdate(&mdc_tmp,pp,i); 786 if (!message_digest)
391 free(pp); 787 {
788 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
789 PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
790 goto err;
791 }
792 if ((message_digest->length != (int)md_len) ||
793 (memcmp(message_digest->data,md_dat,md_len)))
794 {
795#if 0
796{
797int ii;
798for (ii=0; ii<message_digest->length; ii++)
799 printf("%02X",message_digest->data[ii]); printf(" sent\n");
800for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
801}
802#endif
803 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
804 PKCS7_R_DIGEST_FAILURE);
805 ret= -1;
806 goto err;
807 }
808
809 EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL);
810
811 alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
812 ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
813 EVP_VerifyUpdate(&mdc_tmp, abuf, alen);
814
815 OPENSSL_free(abuf);
392 } 816 }
393 817
394 os=si->enc_digest; 818 os=si->enc_digest;
395 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, 819 pkey = X509_get_pubkey(x509);
396 X509_get_pubkey(x509)); 820 if (!pkey)
821 {
822 ret = -1;
823 goto err;
824 }
825#ifndef OPENSSL_NO_DSA
826 if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
827#endif
828
829 i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
830 EVP_PKEY_free(pkey);
397 if (i <= 0) 831 if (i <= 0)
398 { 832 {
399 PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_SIGNATURE_FAILURE); 833 PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
834 PKCS7_R_SIGNATURE_FAILURE);
400 ret= -1; 835 ret= -1;
401 goto err; 836 goto err;
402 } 837 }
403 else 838 else
404 ret=1; 839 ret=1;
405err: 840err:
841 EVP_MD_CTX_cleanup(&mdc_tmp);
406 return(ret); 842 return(ret);
407 } 843 }
408 844
845PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
846 {
847 STACK_OF(PKCS7_RECIP_INFO) *rsk;
848 PKCS7_RECIP_INFO *ri;
849 int i;
850
851 i=OBJ_obj2nid(p7->type);
852 if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
853 rsk=p7->d.signed_and_enveloped->recipientinfo;
854 ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
855 if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
856 ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
857 return(ri->issuer_and_serial);
858 }
859
860ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid)
861 {
862 return(get_attribute(si->auth_attr,nid));
863 }
864
865ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid)
866 {
867 return(get_attribute(si->unauth_attr,nid));
868 }
869
870static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid)
871 {
872 int i;
873 X509_ATTRIBUTE *xa;
874 ASN1_OBJECT *o;
875
876 o=OBJ_nid2obj(nid);
877 if (!o || !sk) return(NULL);
878 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
879 {
880 xa=sk_X509_ATTRIBUTE_value(sk,i);
881 if (OBJ_cmp(xa->object,o) == 0)
882 {
883 if (!xa->single && sk_ASN1_TYPE_num(xa->value.set))
884 return(sk_ASN1_TYPE_value(xa->value.set,0));
885 else
886 return(NULL);
887 }
888 }
889 return(NULL);
890 }
891
892ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
893{
894 ASN1_TYPE *astype;
895 if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL;
896 return astype->value.octet_string;
897}
898
899int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
900 STACK_OF(X509_ATTRIBUTE) *sk)
901 {
902 int i;
903
904 if (p7si->auth_attr != NULL)
905 sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
906 p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
907 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
908 {
909 if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
910 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
911 == NULL)
912 return(0);
913 }
914 return(1);
915 }
916
917int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
918 {
919 int i;
920
921 if (p7si->unauth_attr != NULL)
922 sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
923 X509_ATTRIBUTE_free);
924 p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
925 for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
926 {
927 if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
928 X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i))))
929 == NULL)
930 return(0);
931 }
932 return(1);
933 }
934
935int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
936 void *value)
937 {
938 return(add_attribute(&(p7si->auth_attr),nid,atrtype,value));
939 }
940
941int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype,
942 void *value)
943 {
944 return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value));
945 }
946
947static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
948 void *value)
949 {
950 X509_ATTRIBUTE *attr=NULL;
951
952 if (*sk == NULL)
953 {
954 *sk = sk_X509_ATTRIBUTE_new_null();
955new_attrib:
956 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
957 sk_X509_ATTRIBUTE_push(*sk,attr);
958 }
959 else
960 {
961 int i;
962
963 for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++)
964 {
965 attr=sk_X509_ATTRIBUTE_value(*sk,i);
966 if (OBJ_obj2nid(attr->object) == nid)
967 {
968 X509_ATTRIBUTE_free(attr);
969 attr=X509_ATTRIBUTE_create(nid,atrtype,value);
970 sk_X509_ATTRIBUTE_set(*sk,i,attr);
971 goto end;
972 }
973 }
974 goto new_attrib;
975 }
976end:
977 return(1);
978 }
979
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-19 15:15:34 +0000