1 | /* |
2 | * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | /* Simple PKCS#7 processing functions */ |
11 | |
12 | #include <stdio.h> |
13 | #include "internal/cryptlib.h" |
14 | #include <openssl/x509.h> |
15 | #include <openssl/x509v3.h> |
16 | |
17 | |
18 | #define BUFFERSIZE 4096 |
19 | |
20 | static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si); |
21 | |
22 | PKCS7 *PKCS7_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs, |
23 | BIO *data, int flags) |
24 | { |
25 | PKCS7 *p7; |
26 | int i; |
27 | |
28 | if ((p7 = PKCS7_new()) == NULL) { |
29 | PKCS7err(PKCS7_F_PKCS7_SIGN, ERR_R_MALLOC_FAILURE); |
30 | return NULL; |
31 | } |
32 | |
33 | if (!PKCS7_set_type(p7, NID_pkcs7_signed)) |
34 | goto err; |
35 | |
36 | if (!PKCS7_content_new(p7, NID_pkcs7_data)) |
37 | goto err; |
38 | |
39 | if (pkey && !PKCS7_sign_add_signer(p7, signcert, pkey, NULL, flags)) { |
40 | PKCS7err(PKCS7_F_PKCS7_SIGN, PKCS7_R_PKCS7_ADD_SIGNER_ERROR); |
41 | goto err; |
42 | } |
43 | |
44 | if (!(flags & PKCS7_NOCERTS)) { |
45 | for (i = 0; i < sk_X509_num(certs); i++) { |
46 | if (!PKCS7_add_certificate(p7, sk_X509_value(certs, i))) |
47 | goto err; |
48 | } |
49 | } |
50 | |
51 | if (flags & PKCS7_DETACHED) |
52 | PKCS7_set_detached(p7, 1); |
53 | |
54 | if (flags & (PKCS7_STREAM | PKCS7_PARTIAL)) |
55 | return p7; |
56 | |
57 | if (PKCS7_final(p7, data, flags)) |
58 | return p7; |
59 | |
60 | err: |
61 | PKCS7_free(p7); |
62 | return NULL; |
63 | } |
64 | |
65 | int PKCS7_final(PKCS7 *p7, BIO *data, int flags) |
66 | { |
67 | BIO *p7bio; |
68 | int ret = 0; |
69 | |
70 | if ((p7bio = PKCS7_dataInit(p7, NULL)) == NULL) { |
71 | PKCS7err(PKCS7_F_PKCS7_FINAL, ERR_R_MALLOC_FAILURE); |
72 | return 0; |
73 | } |
74 | |
75 | SMIME_crlf_copy(data, p7bio, flags); |
76 | |
77 | (void)BIO_flush(p7bio); |
78 | |
79 | if (!PKCS7_dataFinal(p7, p7bio)) { |
80 | PKCS7err(PKCS7_F_PKCS7_FINAL, PKCS7_R_PKCS7_DATASIGN); |
81 | goto err; |
82 | } |
83 | |
84 | ret = 1; |
85 | |
86 | err: |
87 | BIO_free_all(p7bio); |
88 | |
89 | return ret; |
90 | |
91 | } |
92 | |
93 | /* Check to see if a cipher exists and if so add S/MIME capabilities */ |
94 | |
95 | static int add_cipher_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) |
96 | { |
97 | if (EVP_get_cipherbynid(nid)) |
98 | return PKCS7_simple_smimecap(sk, nid, arg); |
99 | return 1; |
100 | } |
101 | |
102 | static int add_digest_smcap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) |
103 | { |
104 | if (EVP_get_digestbynid(nid)) |
105 | return PKCS7_simple_smimecap(sk, nid, arg); |
106 | return 1; |
107 | } |
108 | |
109 | PKCS7_SIGNER_INFO *PKCS7_sign_add_signer(PKCS7 *p7, X509 *signcert, |
110 | EVP_PKEY *pkey, const EVP_MD *md, |
111 | int flags) |
112 | { |
113 | PKCS7_SIGNER_INFO *si = NULL; |
114 | STACK_OF(X509_ALGOR) *smcap = NULL; |
115 | if (!X509_check_private_key(signcert, pkey)) { |
116 | PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, |
117 | PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
118 | return NULL; |
119 | } |
120 | |
121 | if ((si = PKCS7_add_signature(p7, signcert, pkey, md)) == NULL) { |
122 | PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, |
123 | PKCS7_R_PKCS7_ADD_SIGNATURE_ERROR); |
124 | return NULL; |
125 | } |
126 | |
127 | if (!(flags & PKCS7_NOCERTS)) { |
128 | if (!PKCS7_add_certificate(p7, signcert)) |
129 | goto err; |
130 | } |
131 | |
132 | if (!(flags & PKCS7_NOATTR)) { |
133 | if (!PKCS7_add_attrib_content_type(si, NULL)) |
134 | goto err; |
135 | /* Add SMIMECapabilities */ |
136 | if (!(flags & PKCS7_NOSMIMECAP)) { |
137 | if ((smcap = sk_X509_ALGOR_new_null()) == NULL) { |
138 | PKCS7err(PKCS7_F_PKCS7_SIGN_ADD_SIGNER, ERR_R_MALLOC_FAILURE); |
139 | goto err; |
140 | } |
141 | if (!add_cipher_smcap(smcap, NID_aes_256_cbc, -1) |
142 | || !add_digest_smcap(smcap, NID_id_GostR3411_2012_256, -1) |
143 | || !add_digest_smcap(smcap, NID_id_GostR3411_2012_512, -1) |
144 | || !add_digest_smcap(smcap, NID_id_GostR3411_94, -1) |
145 | || !add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) |
146 | || !add_cipher_smcap(smcap, NID_aes_192_cbc, -1) |
147 | || !add_cipher_smcap(smcap, NID_aes_128_cbc, -1) |
148 | || !add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) |
149 | || !add_cipher_smcap(smcap, NID_rc2_cbc, 128) |
150 | || !add_cipher_smcap(smcap, NID_rc2_cbc, 64) |
151 | || !add_cipher_smcap(smcap, NID_des_cbc, -1) |
152 | || !add_cipher_smcap(smcap, NID_rc2_cbc, 40) |
153 | || !PKCS7_add_attrib_smimecap(si, smcap)) |
154 | goto err; |
155 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); |
156 | smcap = NULL; |
157 | } |
158 | if (flags & PKCS7_REUSE_DIGEST) { |
159 | if (!pkcs7_copy_existing_digest(p7, si)) |
160 | goto err; |
161 | if (!(flags & PKCS7_PARTIAL) && !PKCS7_SIGNER_INFO_sign(si)) |
162 | goto err; |
163 | } |
164 | } |
165 | return si; |
166 | err: |
167 | sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); |
168 | return NULL; |
169 | } |
170 | |
171 | /* |
172 | * Search for a digest matching SignerInfo digest type and if found copy |
173 | * across. |
174 | */ |
175 | |
176 | static int pkcs7_copy_existing_digest(PKCS7 *p7, PKCS7_SIGNER_INFO *si) |
177 | { |
178 | int i; |
179 | STACK_OF(PKCS7_SIGNER_INFO) *sinfos; |
180 | PKCS7_SIGNER_INFO *sitmp; |
181 | ASN1_OCTET_STRING *osdig = NULL; |
182 | sinfos = PKCS7_get_signer_info(p7); |
183 | for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { |
184 | sitmp = sk_PKCS7_SIGNER_INFO_value(sinfos, i); |
185 | if (si == sitmp) |
186 | break; |
187 | if (sk_X509_ATTRIBUTE_num(sitmp->auth_attr) <= 0) |
188 | continue; |
189 | if (!OBJ_cmp(si->digest_alg->algorithm, sitmp->digest_alg->algorithm)) { |
190 | osdig = PKCS7_digest_from_attributes(sitmp->auth_attr); |
191 | break; |
192 | } |
193 | |
194 | } |
195 | |
196 | if (osdig) |
197 | return PKCS7_add1_attrib_digest(si, osdig->data, osdig->length); |
198 | |
199 | PKCS7err(PKCS7_F_PKCS7_COPY_EXISTING_DIGEST, |
200 | PKCS7_R_NO_MATCHING_DIGEST_TYPE_FOUND); |
201 | return 0; |
202 | } |
203 | |
204 | int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store, |
205 | BIO *indata, BIO *out, int flags) |
206 | { |
207 | STACK_OF(X509) *signers; |
208 | X509 *signer; |
209 | STACK_OF(PKCS7_SIGNER_INFO) *sinfos; |
210 | PKCS7_SIGNER_INFO *si; |
211 | X509_STORE_CTX *cert_ctx = NULL; |
212 | char *buf = NULL; |
213 | int i, j = 0, k, ret = 0; |
214 | BIO *p7bio = NULL; |
215 | BIO *tmpin = NULL, *tmpout = NULL; |
216 | |
217 | if (p7 == NULL) { |
218 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_INVALID_NULL_POINTER); |
219 | return 0; |
220 | } |
221 | |
222 | if (!PKCS7_type_is_signed(p7)) { |
223 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_WRONG_CONTENT_TYPE); |
224 | return 0; |
225 | } |
226 | |
227 | /* Check for no data and no content: no data to verify signature */ |
228 | if (PKCS7_get_detached(p7) && !indata) { |
229 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_NO_CONTENT); |
230 | return 0; |
231 | } |
232 | |
233 | if (flags & PKCS7_NO_DUAL_CONTENT) { |
234 | /* |
235 | * This was originally "#if 0" because we thought that only old broken |
236 | * Netscape did this. It turns out that Authenticode uses this kind |
237 | * of "extended" PKCS7 format, and things like UEFI secure boot and |
238 | * tools like osslsigncode need it. In Authenticode the verification |
239 | * process is different, but the existing PKCs7 verification works. |
240 | */ |
241 | if (!PKCS7_get_detached(p7) && indata) { |
242 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_CONTENT_AND_DATA_PRESENT); |
243 | return 0; |
244 | } |
245 | } |
246 | |
247 | sinfos = PKCS7_get_signer_info(p7); |
248 | |
249 | if (!sinfos || !sk_PKCS7_SIGNER_INFO_num(sinfos)) { |
250 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_NO_SIGNATURES_ON_DATA); |
251 | return 0; |
252 | } |
253 | |
254 | signers = PKCS7_get0_signers(p7, certs, flags); |
255 | if (!signers) |
256 | return 0; |
257 | |
258 | /* Now verify the certificates */ |
259 | |
260 | cert_ctx = X509_STORE_CTX_new(); |
261 | if (cert_ctx == NULL) |
262 | goto err; |
263 | if (!(flags & PKCS7_NOVERIFY)) |
264 | for (k = 0; k < sk_X509_num(signers); k++) { |
265 | signer = sk_X509_value(signers, k); |
266 | if (!(flags & PKCS7_NOCHAIN)) { |
267 | if (!X509_STORE_CTX_init(cert_ctx, store, signer, |
268 | p7->d.sign->cert)) { |
269 | PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_X509_LIB); |
270 | goto err; |
271 | } |
272 | X509_STORE_CTX_set_default(cert_ctx, "smime_sign" ); |
273 | } else if (!X509_STORE_CTX_init(cert_ctx, store, signer, NULL)) { |
274 | PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_X509_LIB); |
275 | goto err; |
276 | } |
277 | if (!(flags & PKCS7_NOCRL)) |
278 | X509_STORE_CTX_set0_crls(cert_ctx, p7->d.sign->crl); |
279 | i = X509_verify_cert(cert_ctx); |
280 | if (i <= 0) |
281 | j = X509_STORE_CTX_get_error(cert_ctx); |
282 | X509_STORE_CTX_cleanup(cert_ctx); |
283 | if (i <= 0) { |
284 | PKCS7err(PKCS7_F_PKCS7_VERIFY, |
285 | PKCS7_R_CERTIFICATE_VERIFY_ERROR); |
286 | ERR_add_error_data(2, "Verify error:" , |
287 | X509_verify_cert_error_string(j)); |
288 | goto err; |
289 | } |
290 | /* Check for revocation status here */ |
291 | } |
292 | |
293 | /* |
294 | * Performance optimization: if the content is a memory BIO then store |
295 | * its contents in a temporary read only memory BIO. This avoids |
296 | * potentially large numbers of slow copies of data which will occur when |
297 | * reading from a read write memory BIO when signatures are calculated. |
298 | */ |
299 | |
300 | if (indata && (BIO_method_type(indata) == BIO_TYPE_MEM)) { |
301 | char *ptr; |
302 | long len; |
303 | len = BIO_get_mem_data(indata, &ptr); |
304 | tmpin = BIO_new_mem_buf(ptr, len); |
305 | if (tmpin == NULL) { |
306 | PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE); |
307 | goto err; |
308 | } |
309 | } else |
310 | tmpin = indata; |
311 | |
312 | if ((p7bio = PKCS7_dataInit(p7, tmpin)) == NULL) |
313 | goto err; |
314 | |
315 | if (flags & PKCS7_TEXT) { |
316 | if ((tmpout = BIO_new(BIO_s_mem())) == NULL) { |
317 | PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE); |
318 | goto err; |
319 | } |
320 | BIO_set_mem_eof_return(tmpout, 0); |
321 | } else |
322 | tmpout = out; |
323 | |
324 | /* We now have to 'read' from p7bio to calculate digests etc. */ |
325 | if ((buf = OPENSSL_malloc(BUFFERSIZE)) == NULL) { |
326 | PKCS7err(PKCS7_F_PKCS7_VERIFY, ERR_R_MALLOC_FAILURE); |
327 | goto err; |
328 | } |
329 | for (;;) { |
330 | i = BIO_read(p7bio, buf, BUFFERSIZE); |
331 | if (i <= 0) |
332 | break; |
333 | if (tmpout) |
334 | BIO_write(tmpout, buf, i); |
335 | } |
336 | |
337 | if (flags & PKCS7_TEXT) { |
338 | if (!SMIME_text(tmpout, out)) { |
339 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_SMIME_TEXT_ERROR); |
340 | BIO_free(tmpout); |
341 | goto err; |
342 | } |
343 | BIO_free(tmpout); |
344 | } |
345 | |
346 | /* Now Verify All Signatures */ |
347 | if (!(flags & PKCS7_NOSIGS)) |
348 | for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { |
349 | si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); |
350 | signer = sk_X509_value(signers, i); |
351 | j = PKCS7_signatureVerify(p7bio, p7, si, signer); |
352 | if (j <= 0) { |
353 | PKCS7err(PKCS7_F_PKCS7_VERIFY, PKCS7_R_SIGNATURE_FAILURE); |
354 | goto err; |
355 | } |
356 | } |
357 | |
358 | ret = 1; |
359 | |
360 | err: |
361 | X509_STORE_CTX_free(cert_ctx); |
362 | OPENSSL_free(buf); |
363 | if (tmpin == indata) { |
364 | if (indata) |
365 | BIO_pop(p7bio); |
366 | } |
367 | BIO_free_all(p7bio); |
368 | sk_X509_free(signers); |
369 | return ret; |
370 | } |
371 | |
372 | STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, |
373 | int flags) |
374 | { |
375 | STACK_OF(X509) *signers; |
376 | STACK_OF(PKCS7_SIGNER_INFO) *sinfos; |
377 | PKCS7_SIGNER_INFO *si; |
378 | PKCS7_ISSUER_AND_SERIAL *ias; |
379 | X509 *signer; |
380 | int i; |
381 | |
382 | if (p7 == NULL) { |
383 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_INVALID_NULL_POINTER); |
384 | return NULL; |
385 | } |
386 | |
387 | if (!PKCS7_type_is_signed(p7)) { |
388 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_WRONG_CONTENT_TYPE); |
389 | return NULL; |
390 | } |
391 | |
392 | /* Collect all the signers together */ |
393 | |
394 | sinfos = PKCS7_get_signer_info(p7); |
395 | |
396 | if (sk_PKCS7_SIGNER_INFO_num(sinfos) <= 0) { |
397 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, PKCS7_R_NO_SIGNERS); |
398 | return 0; |
399 | } |
400 | |
401 | if ((signers = sk_X509_new_null()) == NULL) { |
402 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, ERR_R_MALLOC_FAILURE); |
403 | return NULL; |
404 | } |
405 | |
406 | for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { |
407 | si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); |
408 | ias = si->issuer_and_serial; |
409 | signer = NULL; |
410 | /* If any certificates passed they take priority */ |
411 | if (certs) |
412 | signer = X509_find_by_issuer_and_serial(certs, |
413 | ias->issuer, ias->serial); |
414 | if (!signer && !(flags & PKCS7_NOINTERN) |
415 | && p7->d.sign->cert) |
416 | signer = |
417 | X509_find_by_issuer_and_serial(p7->d.sign->cert, |
418 | ias->issuer, ias->serial); |
419 | if (!signer) { |
420 | PKCS7err(PKCS7_F_PKCS7_GET0_SIGNERS, |
421 | PKCS7_R_SIGNER_CERTIFICATE_NOT_FOUND); |
422 | sk_X509_free(signers); |
423 | return 0; |
424 | } |
425 | |
426 | if (!sk_X509_push(signers, signer)) { |
427 | sk_X509_free(signers); |
428 | return NULL; |
429 | } |
430 | } |
431 | return signers; |
432 | } |
433 | |
434 | /* Build a complete PKCS#7 enveloped data */ |
435 | |
436 | PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, |
437 | int flags) |
438 | { |
439 | PKCS7 *p7; |
440 | BIO *p7bio = NULL; |
441 | int i; |
442 | X509 *x509; |
443 | if ((p7 = PKCS7_new()) == NULL) { |
444 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT, ERR_R_MALLOC_FAILURE); |
445 | return NULL; |
446 | } |
447 | |
448 | if (!PKCS7_set_type(p7, NID_pkcs7_enveloped)) |
449 | goto err; |
450 | if (!PKCS7_set_cipher(p7, cipher)) { |
451 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT, PKCS7_R_ERROR_SETTING_CIPHER); |
452 | goto err; |
453 | } |
454 | |
455 | for (i = 0; i < sk_X509_num(certs); i++) { |
456 | x509 = sk_X509_value(certs, i); |
457 | if (!PKCS7_add_recipient(p7, x509)) { |
458 | PKCS7err(PKCS7_F_PKCS7_ENCRYPT, PKCS7_R_ERROR_ADDING_RECIPIENT); |
459 | goto err; |
460 | } |
461 | } |
462 | |
463 | if (flags & PKCS7_STREAM) |
464 | return p7; |
465 | |
466 | if (PKCS7_final(p7, in, flags)) |
467 | return p7; |
468 | |
469 | err: |
470 | |
471 | BIO_free_all(p7bio); |
472 | PKCS7_free(p7); |
473 | return NULL; |
474 | |
475 | } |
476 | |
477 | int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags) |
478 | { |
479 | BIO *tmpmem; |
480 | int ret = 0, i; |
481 | char *buf = NULL; |
482 | |
483 | if (p7 == NULL) { |
484 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_INVALID_NULL_POINTER); |
485 | return 0; |
486 | } |
487 | |
488 | if (!PKCS7_type_is_enveloped(p7)) { |
489 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_WRONG_CONTENT_TYPE); |
490 | return 0; |
491 | } |
492 | |
493 | if (cert && !X509_check_private_key(cert, pkey)) { |
494 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, |
495 | PKCS7_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); |
496 | return 0; |
497 | } |
498 | |
499 | if ((tmpmem = PKCS7_dataDecode(p7, pkey, NULL, cert)) == NULL) { |
500 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, PKCS7_R_DECRYPT_ERROR); |
501 | return 0; |
502 | } |
503 | |
504 | if (flags & PKCS7_TEXT) { |
505 | BIO *tmpbuf, *bread; |
506 | /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */ |
507 | if ((tmpbuf = BIO_new(BIO_f_buffer())) == NULL) { |
508 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); |
509 | BIO_free_all(tmpmem); |
510 | return 0; |
511 | } |
512 | if ((bread = BIO_push(tmpbuf, tmpmem)) == NULL) { |
513 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); |
514 | BIO_free_all(tmpbuf); |
515 | BIO_free_all(tmpmem); |
516 | return 0; |
517 | } |
518 | ret = SMIME_text(bread, data); |
519 | if (ret > 0 && BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) { |
520 | if (!BIO_get_cipher_status(tmpmem)) |
521 | ret = 0; |
522 | } |
523 | BIO_free_all(bread); |
524 | return ret; |
525 | } |
526 | if ((buf = OPENSSL_malloc(BUFFERSIZE)) == NULL) { |
527 | PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE); |
528 | goto err; |
529 | } |
530 | for (;;) { |
531 | i = BIO_read(tmpmem, buf, BUFFERSIZE); |
532 | if (i <= 0) { |
533 | ret = 1; |
534 | if (BIO_method_type(tmpmem) == BIO_TYPE_CIPHER) { |
535 | if (!BIO_get_cipher_status(tmpmem)) |
536 | ret = 0; |
537 | } |
538 | |
539 | break; |
540 | } |
541 | if (BIO_write(data, buf, i) != i) { |
542 | break; |
543 | } |
544 | } |
545 | err: |
546 | OPENSSL_free(buf); |
547 | BIO_free_all(tmpmem); |
548 | return ret; |
549 | } |
550 | |