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-rw-r--r--src/lib/libcrypto/evp/evp_enc.c670
1 files changed, 0 insertions, 670 deletions
diff --git a/src/lib/libcrypto/evp/evp_enc.c b/src/lib/libcrypto/evp/evp_enc.c
deleted file mode 100644
index f8d2cb78d4..0000000000
--- a/src/lib/libcrypto/evp/evp_enc.c
+++ /dev/null
@@ -1,670 +0,0 @@
1/* $OpenBSD: evp_enc.c,v 1.31 2016/05/30 13:42:54 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 <stdlib.h>
61#include <string.h>
62
63#include <openssl/opensslconf.h>
64
65#include <openssl/err.h>
66#include <openssl/evp.h>
67
68#ifndef OPENSSL_NO_ENGINE
69#include <openssl/engine.h>
70#endif
71
72#include "evp_locl.h"
73
74#define M_do_cipher(ctx, out, in, inl) ctx->cipher->do_cipher(ctx, out, in, inl)
75
76void
77EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
78{
79 memset(ctx, 0, sizeof(EVP_CIPHER_CTX));
80}
81
82EVP_CIPHER_CTX *
83EVP_CIPHER_CTX_new(void)
84{
85 return calloc(1, sizeof(EVP_CIPHER_CTX));
86}
87
88int
89EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
90 const unsigned char *key, const unsigned char *iv, int enc)
91{
92 if (cipher)
93 EVP_CIPHER_CTX_init(ctx);
94 return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
95}
96
97int
98EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
99 const unsigned char *key, const unsigned char *iv, int enc)
100{
101 if (enc == -1)
102 enc = ctx->encrypt;
103 else {
104 if (enc)
105 enc = 1;
106 ctx->encrypt = enc;
107 }
108#ifndef OPENSSL_NO_ENGINE
109 /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
110 * so this context may already have an ENGINE! Try to avoid releasing
111 * the previous handle, re-querying for an ENGINE, and having a
112 * reinitialisation, when it may all be unecessary. */
113 if (ctx->engine && ctx->cipher &&
114 (!cipher || (cipher && (cipher->nid == ctx->cipher->nid))))
115 goto skip_to_init;
116#endif
117 if (cipher) {
118 /* Ensure a context left lying around from last time is cleared
119 * (the previous check attempted to avoid this if the same
120 * ENGINE and EVP_CIPHER could be used). */
121 if (ctx->cipher) {
122 unsigned long flags = ctx->flags;
123 EVP_CIPHER_CTX_cleanup(ctx);
124 /* Restore encrypt and flags */
125 ctx->encrypt = enc;
126 ctx->flags = flags;
127 }
128#ifndef OPENSSL_NO_ENGINE
129 if (impl) {
130 if (!ENGINE_init(impl)) {
131 EVPerr(EVP_F_EVP_CIPHERINIT_EX,
132 EVP_R_INITIALIZATION_ERROR);
133 return 0;
134 }
135 } else
136 /* Ask if an ENGINE is reserved for this job */
137 impl = ENGINE_get_cipher_engine(cipher->nid);
138 if (impl) {
139 /* There's an ENGINE for this job ... (apparently) */
140 const EVP_CIPHER *c =
141 ENGINE_get_cipher(impl, cipher->nid);
142 if (!c) {
143 EVPerr(EVP_F_EVP_CIPHERINIT_EX,
144 EVP_R_INITIALIZATION_ERROR);
145 return 0;
146 }
147 /* We'll use the ENGINE's private cipher definition */
148 cipher = c;
149 /* Store the ENGINE functional reference so we know
150 * 'cipher' came from an ENGINE and we need to release
151 * it when done. */
152 ctx->engine = impl;
153 } else
154 ctx->engine = NULL;
155#endif
156
157 ctx->cipher = cipher;
158 if (ctx->cipher->ctx_size) {
159 ctx->cipher_data = malloc(ctx->cipher->ctx_size);
160 if (!ctx->cipher_data) {
161 EVPerr(EVP_F_EVP_CIPHERINIT_EX,
162 ERR_R_MALLOC_FAILURE);
163 return 0;
164 }
165 } else {
166 ctx->cipher_data = NULL;
167 }
168 ctx->key_len = cipher->key_len;
169 ctx->flags = 0;
170 if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
171 if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
172 EVPerr(EVP_F_EVP_CIPHERINIT_EX,
173 EVP_R_INITIALIZATION_ERROR);
174 return 0;
175 }
176 }
177 } else if (!ctx->cipher) {
178 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
179 return 0;
180 }
181#ifndef OPENSSL_NO_ENGINE
182skip_to_init:
183#endif
184 /* we assume block size is a power of 2 in *cryptUpdate */
185 if (ctx->cipher->block_size != 1 &&
186 ctx->cipher->block_size != 8 &&
187 ctx->cipher->block_size != 16) {
188 EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_BAD_BLOCK_LENGTH);
189 return 0;
190 }
191
192 if (!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
193 switch (EVP_CIPHER_CTX_mode(ctx)) {
194
195 case EVP_CIPH_STREAM_CIPHER:
196 case EVP_CIPH_ECB_MODE:
197 break;
198
199 case EVP_CIPH_CFB_MODE:
200 case EVP_CIPH_OFB_MODE:
201
202 ctx->num = 0;
203 /* fall-through */
204
205 case EVP_CIPH_CBC_MODE:
206
207 if ((size_t)EVP_CIPHER_CTX_iv_length(ctx) >
208 sizeof(ctx->iv)) {
209 EVPerr(EVP_F_EVP_CIPHERINIT_EX,
210 EVP_R_IV_TOO_LARGE);
211 return 0;
212 }
213 if (iv)
214 memcpy(ctx->oiv, iv,
215 EVP_CIPHER_CTX_iv_length(ctx));
216 memcpy(ctx->iv, ctx->oiv,
217 EVP_CIPHER_CTX_iv_length(ctx));
218 break;
219
220 case EVP_CIPH_CTR_MODE:
221 ctx->num = 0;
222 /* Don't reuse IV for CTR mode */
223 if (iv)
224 memcpy(ctx->iv, iv,
225 EVP_CIPHER_CTX_iv_length(ctx));
226 break;
227
228 default:
229 return 0;
230 break;
231 }
232 }
233
234 if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
235 if (!ctx->cipher->init(ctx, key, iv, enc))
236 return 0;
237 }
238 ctx->buf_len = 0;
239 ctx->final_used = 0;
240 ctx->block_mask = ctx->cipher->block_size - 1;
241 return 1;
242}
243
244int
245EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
246 const unsigned char *in, int inl)
247{
248 if (ctx->encrypt)
249 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
250 else
251 return EVP_DecryptUpdate(ctx, out, outl, in, inl);
252}
253
254int
255EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
256{
257 if (ctx->encrypt)
258 return EVP_EncryptFinal_ex(ctx, out, outl);
259 else
260 return EVP_DecryptFinal_ex(ctx, out, outl);
261}
262
263int
264EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
265{
266 if (ctx->encrypt)
267 return EVP_EncryptFinal_ex(ctx, out, outl);
268 else
269 return EVP_DecryptFinal_ex(ctx, out, outl);
270}
271
272int
273EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
274 const unsigned char *key, const unsigned char *iv)
275{
276 return EVP_CipherInit(ctx, cipher, key, iv, 1);
277}
278
279int
280EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
281 const unsigned char *key, const unsigned char *iv)
282{
283 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
284}
285
286int
287EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
288 const unsigned char *key, const unsigned char *iv)
289{
290 return EVP_CipherInit(ctx, cipher, key, iv, 0);
291}
292
293int
294EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
295 const unsigned char *key, const unsigned char *iv)
296{
297 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
298}
299
300int
301EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
302 const unsigned char *in, int inl)
303{
304 int i, j, bl;
305
306 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
307 i = M_do_cipher(ctx, out, in, inl);
308 if (i < 0)
309 return 0;
310 else
311 *outl = i;
312 return 1;
313 }
314
315 if (inl <= 0) {
316 *outl = 0;
317 return inl == 0;
318 }
319
320 if (ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0) {
321 if (M_do_cipher(ctx, out, in, inl)) {
322 *outl = inl;
323 return 1;
324 } else {
325 *outl = 0;
326 return 0;
327 }
328 }
329 i = ctx->buf_len;
330 bl = ctx->cipher->block_size;
331 if ((size_t)bl > sizeof(ctx->buf)) {
332 EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_BAD_BLOCK_LENGTH);
333 *outl = 0;
334 return 0;
335 }
336 if (i != 0) {
337 if (bl - i > inl) {
338 memcpy(&(ctx->buf[i]), in, inl);
339 ctx->buf_len += inl;
340 *outl = 0;
341 return 1;
342 } else {
343 j = bl - i;
344 memcpy(&(ctx->buf[i]), in, j);
345 if (!M_do_cipher(ctx, out, ctx->buf, bl))
346 return 0;
347 inl -= j;
348 in += j;
349 out += bl;
350 *outl = bl;
351 }
352 } else
353 *outl = 0;
354 i = inl&(bl - 1);
355 inl -= i;
356 if (inl > 0) {
357 if (!M_do_cipher(ctx, out, in, inl))
358 return 0;
359 *outl += inl;
360 }
361
362 if (i != 0)
363 memcpy(ctx->buf, &(in[inl]), i);
364 ctx->buf_len = i;
365 return 1;
366}
367
368int
369EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
370{
371 int ret;
372
373 ret = EVP_EncryptFinal_ex(ctx, out, outl);
374 (void) EVP_CIPHER_CTX_cleanup(ctx);
375 return ret;
376}
377
378int
379EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
380{
381 int n, ret;
382 unsigned int i, b, bl;
383
384 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
385 ret = M_do_cipher(ctx, out, NULL, 0);
386 if (ret < 0)
387 return 0;
388 else
389 *outl = ret;
390 return 1;
391 }
392
393 b = ctx->cipher->block_size;
394 if (b > sizeof ctx->buf) {
395 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_BAD_BLOCK_LENGTH);
396 return 0;
397 }
398 if (b == 1) {
399 *outl = 0;
400 return 1;
401 }
402 bl = ctx->buf_len;
403 if (ctx->flags & EVP_CIPH_NO_PADDING) {
404 if (bl) {
405 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX,
406 EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
407 return 0;
408 }
409 *outl = 0;
410 return 1;
411 }
412
413 n = b - bl;
414 for (i = bl; i < b; i++)
415 ctx->buf[i] = n;
416 ret = M_do_cipher(ctx, out, ctx->buf, b);
417
418
419 if (ret)
420 *outl = b;
421
422 return ret;
423}
424
425int
426EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
427 const unsigned char *in, int inl)
428{
429 int fix_len;
430 unsigned int b;
431
432 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
433 fix_len = M_do_cipher(ctx, out, in, inl);
434 if (fix_len < 0) {
435 *outl = 0;
436 return 0;
437 } else
438 *outl = fix_len;
439 return 1;
440 }
441
442 if (inl <= 0) {
443 *outl = 0;
444 return inl == 0;
445 }
446
447 if (ctx->flags & EVP_CIPH_NO_PADDING)
448 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
449
450 b = ctx->cipher->block_size;
451 if (b > sizeof ctx->final) {
452 EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_BAD_BLOCK_LENGTH);
453 return 0;
454 }
455
456 if (ctx->final_used) {
457 memcpy(out, ctx->final, b);
458 out += b;
459 fix_len = 1;
460 } else
461 fix_len = 0;
462
463
464 if (!EVP_EncryptUpdate(ctx, out, outl, in, inl))
465 return 0;
466
467 /* if we have 'decrypted' a multiple of block size, make sure
468 * we have a copy of this last block */
469 if (b > 1 && !ctx->buf_len) {
470 *outl -= b;
471 ctx->final_used = 1;
472 memcpy(ctx->final, &out[*outl], b);
473 } else
474 ctx->final_used = 0;
475
476 if (fix_len)
477 *outl += b;
478
479 return 1;
480}
481
482int
483EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
484{
485 int ret;
486
487 ret = EVP_DecryptFinal_ex(ctx, out, outl);
488 (void) EVP_CIPHER_CTX_cleanup(ctx);
489 return ret;
490}
491
492int
493EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
494{
495 int i, n;
496 unsigned int b;
497 *outl = 0;
498
499 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
500 i = M_do_cipher(ctx, out, NULL, 0);
501 if (i < 0)
502 return 0;
503 else
504 *outl = i;
505 return 1;
506 }
507
508 b = ctx->cipher->block_size;
509 if (ctx->flags & EVP_CIPH_NO_PADDING) {
510 if (ctx->buf_len) {
511 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,
512 EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
513 return 0;
514 }
515 *outl = 0;
516 return 1;
517 }
518 if (b > 1) {
519 if (ctx->buf_len || !ctx->final_used) {
520 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,
521 EVP_R_WRONG_FINAL_BLOCK_LENGTH);
522 return (0);
523 }
524 if (b > sizeof ctx->final) {
525 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,
526 EVP_R_BAD_BLOCK_LENGTH);
527 return 0;
528 }
529 n = ctx->final[b - 1];
530 if (n == 0 || n > (int)b) {
531 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);
532 return (0);
533 }
534 for (i = 0; i < n; i++) {
535 if (ctx->final[--b] != n) {
536 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX,
537 EVP_R_BAD_DECRYPT);
538 return (0);
539 }
540 }
541 n = ctx->cipher->block_size - n;
542 for (i = 0; i < n; i++)
543 out[i] = ctx->final[i];
544 *outl = n;
545 } else
546 *outl = 0;
547 return (1);
548}
549
550void
551EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
552{
553 if (ctx) {
554 EVP_CIPHER_CTX_cleanup(ctx);
555 free(ctx);
556 }
557}
558
559int
560EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
561{
562 if (c->cipher != NULL) {
563 if (c->cipher->cleanup && !c->cipher->cleanup(c))
564 return 0;
565 /* Cleanse cipher context data */
566 if (c->cipher_data)
567 explicit_bzero(c->cipher_data, c->cipher->ctx_size);
568 }
569 free(c->cipher_data);
570#ifndef OPENSSL_NO_ENGINE
571 if (c->engine)
572 /* The EVP_CIPHER we used belongs to an ENGINE, release the
573 * functional reference we held for this reason. */
574 ENGINE_finish(c->engine);
575#endif
576 explicit_bzero(c, sizeof(EVP_CIPHER_CTX));
577 return 1;
578}
579
580int
581EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
582{
583 if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
584 return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH,
585 keylen, NULL);
586 if (c->key_len == keylen)
587 return 1;
588 if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
589 c->key_len = keylen;
590 return 1;
591 }
592 EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH, EVP_R_INVALID_KEY_LENGTH);
593 return 0;
594}
595
596int
597EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
598{
599 if (pad)
600 ctx->flags &= ~EVP_CIPH_NO_PADDING;
601 else
602 ctx->flags |= EVP_CIPH_NO_PADDING;
603 return 1;
604}
605
606int
607EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
608{
609 int ret;
610
611 if (!ctx->cipher) {
612 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET);
613 return 0;
614 }
615
616 if (!ctx->cipher->ctrl) {
617 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED);
618 return 0;
619 }
620
621 ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
622 if (ret == -1) {
623 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL,
624 EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
625 return 0;
626 }
627 return ret;
628}
629
630int
631EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
632{
633 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
634 return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
635 arc4random_buf(key, ctx->key_len);
636 return 1;
637}
638
639int
640EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
641{
642 if ((in == NULL) || (in->cipher == NULL)) {
643 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INPUT_NOT_INITIALIZED);
644 return 0;
645 }
646#ifndef OPENSSL_NO_ENGINE
647 /* Make sure it's safe to copy a cipher context using an ENGINE */
648 if (in->engine && !ENGINE_init(in->engine)) {
649 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, ERR_R_ENGINE_LIB);
650 return 0;
651 }
652#endif
653
654 EVP_CIPHER_CTX_cleanup(out);
655 memcpy(out, in, sizeof *out);
656
657 if (in->cipher_data && in->cipher->ctx_size) {
658 out->cipher_data = malloc(in->cipher->ctx_size);
659 if (!out->cipher_data) {
660 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, ERR_R_MALLOC_FAILURE);
661 return 0;
662 }
663 memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
664 }
665
666 if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
667 return in->cipher->ctrl((EVP_CIPHER_CTX *)in,
668 EVP_CTRL_COPY, 0, out);
669 return 1;
670}
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