2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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
10 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
16 #include "internal/cryptlib.h"
17 #include <openssl/evp.h>
18 #include <openssl/err.h>
19 #include <openssl/rand.h>
20 #include <openssl/engine.h>
21 #include <openssl/params.h>
22 #include <openssl/core_names.h>
23 #include "crypto/evp.h"
24 #include "internal/provider.h"
25 #include "evp_local.h"
27 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
32 if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
35 if (ctx->provctx != NULL) {
36 if (ctx->cipher->freectx != NULL)
37 ctx->cipher->freectx(ctx->provctx);
40 if (ctx->fetched_cipher != NULL)
41 EVP_CIPHER_free(ctx->fetched_cipher);
42 memset(ctx, 0, sizeof(*ctx));
46 /* Remove legacy code below when legacy support is removed. */
49 if (ctx->cipher != NULL) {
50 if (ctx->cipher->cleanup && !ctx->cipher->cleanup(ctx))
52 /* Cleanse cipher context data */
53 if (ctx->cipher_data && ctx->cipher->ctx_size)
54 OPENSSL_cleanse(ctx->cipher_data, ctx->cipher->ctx_size);
56 OPENSSL_free(ctx->cipher_data);
57 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
58 ENGINE_finish(ctx->engine);
60 memset(ctx, 0, sizeof(*ctx));
64 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
66 return OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
69 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
73 EVP_CIPHER_CTX_reset(ctx);
77 static int evp_cipher_init_internal(EVP_CIPHER_CTX *ctx,
78 const EVP_CIPHER *cipher,
79 ENGINE *impl, const unsigned char *key,
80 const unsigned char *iv, int enc,
81 const OSSL_PARAM params[])
84 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
85 ENGINE *tmpimpl = NULL;
88 * enc == 1 means we are encrypting.
89 * enc == 0 means we are decrypting.
90 * enc == -1 means, use the previously initialised value for encrypt/decrypt
100 if (cipher == NULL && ctx->cipher == NULL) {
101 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
105 /* Code below to be removed when legacy support is dropped. */
107 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
109 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
110 * this context may already have an ENGINE! Try to avoid releasing the
111 * previous handle, re-querying for an ENGINE, and having a
112 * reinitialisation, when it may all be unnecessary.
114 if (ctx->engine && ctx->cipher
115 && (cipher == NULL || cipher->nid == ctx->cipher->nid))
118 if (cipher != NULL && impl == NULL) {
119 /* Ask if an ENGINE is reserved for this job */
120 tmpimpl = ENGINE_get_cipher_engine(cipher->nid);
125 * If there are engines involved then we should use legacy handling for now.
127 if (ctx->engine != NULL
128 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
132 if (ctx->cipher == ctx->fetched_cipher)
134 EVP_CIPHER_free(ctx->fetched_cipher);
135 ctx->fetched_cipher = NULL;
139 * Ensure a context left lying around from last time is cleared
142 if (cipher != NULL && ctx->cipher != NULL) {
143 OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size);
144 ctx->cipher_data = NULL;
148 /* Start of non-legacy code below */
150 /* Ensure a context left lying around from last time is cleared */
151 if (cipher != NULL && ctx->cipher != NULL) {
152 unsigned long flags = ctx->flags;
154 EVP_CIPHER_CTX_reset(ctx);
155 /* Restore encrypt and flags */
161 cipher = ctx->cipher;
163 if (cipher->prov == NULL) {
165 /* We only do explicit fetches inside the FIPS module */
166 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
169 EVP_CIPHER *provciph =
170 EVP_CIPHER_fetch(NULL,
171 cipher->nid == NID_undef ? "NULL"
172 : OBJ_nid2sn(cipher->nid),
175 if (provciph == NULL)
178 EVP_CIPHER_free(ctx->fetched_cipher);
179 ctx->fetched_cipher = provciph;
183 if (cipher->prov != NULL) {
184 if (!EVP_CIPHER_up_ref((EVP_CIPHER *)cipher)) {
185 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
188 EVP_CIPHER_free(ctx->fetched_cipher);
189 ctx->fetched_cipher = (EVP_CIPHER *)cipher;
191 ctx->cipher = cipher;
192 if (ctx->provctx == NULL) {
193 ctx->provctx = ctx->cipher->newctx(ossl_provider_ctx(cipher->prov));
194 if (ctx->provctx == NULL) {
195 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
200 if ((ctx->flags & EVP_CIPH_NO_PADDING) != 0) {
202 * If this ctx was already set up for no padding then we need to tell
203 * the new cipher about it.
205 if (!EVP_CIPHER_CTX_set_padding(ctx, 0))
210 if (ctx->cipher->einit == NULL) {
211 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
215 return ctx->cipher->einit(ctx->provctx,
218 : EVP_CIPHER_CTX_key_length(ctx),
221 : EVP_CIPHER_CTX_iv_length(ctx),
225 if (ctx->cipher->dinit == NULL) {
226 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
230 return ctx->cipher->dinit(ctx->provctx,
233 : EVP_CIPHER_CTX_key_length(ctx),
236 : EVP_CIPHER_CTX_iv_length(ctx),
239 /* Code below to be removed when legacy support is dropped. */
242 if (cipher != NULL) {
244 * Ensure a context left lying around from last time is cleared (we
245 * previously attempted to avoid this if the same ENGINE and
246 * EVP_CIPHER could be used).
249 unsigned long flags = ctx->flags;
250 EVP_CIPHER_CTX_reset(ctx);
251 /* Restore encrypt and flags */
255 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
257 if (!ENGINE_init(impl)) {
258 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
265 /* There's an ENGINE for this job ... (apparently) */
266 const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
270 * One positive side-effect of US's export control history,
271 * is that we should at least be able to avoid using US
272 * misspellings of "initialisation"?
274 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
277 /* We'll use the ENGINE's private cipher definition */
280 * Store the ENGINE functional reference so we know 'cipher' came
281 * from an ENGINE and we need to release it when done.
289 ctx->cipher = cipher;
290 if (ctx->cipher->ctx_size) {
291 ctx->cipher_data = OPENSSL_zalloc(ctx->cipher->ctx_size);
292 if (ctx->cipher_data == NULL) {
294 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
298 ctx->cipher_data = NULL;
300 ctx->key_len = cipher->key_len;
301 /* Preserve wrap enable flag, zero everything else */
302 ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
303 if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
304 if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
306 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
311 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
314 if (ctx->cipher == NULL)
317 /* we assume block size is a power of 2 in *cryptUpdate */
318 OPENSSL_assert(ctx->cipher->block_size == 1
319 || ctx->cipher->block_size == 8
320 || ctx->cipher->block_size == 16);
322 if (!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
323 && EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE) {
324 ERR_raise(ERR_LIB_EVP, EVP_R_WRAP_MODE_NOT_ALLOWED);
328 if ((EVP_CIPHER_flags(EVP_CIPHER_CTX_get0_cipher(ctx))
329 & EVP_CIPH_CUSTOM_IV) == 0) {
330 switch (EVP_CIPHER_CTX_mode(ctx)) {
332 case EVP_CIPH_STREAM_CIPHER:
333 case EVP_CIPH_ECB_MODE:
336 case EVP_CIPH_CFB_MODE:
337 case EVP_CIPH_OFB_MODE:
342 case EVP_CIPH_CBC_MODE:
343 n = EVP_CIPHER_CTX_iv_length(ctx);
344 if (!ossl_assert(n >= 0 && n <= (int)sizeof(ctx->iv)))
347 memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
348 memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
351 case EVP_CIPH_CTR_MODE:
353 /* Don't reuse IV for CTR mode */
355 memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
363 if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
364 if (!ctx->cipher->init(ctx, key, iv, enc))
369 ctx->block_mask = ctx->cipher->block_size - 1;
373 int EVP_CipherInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
374 const unsigned char *key, const unsigned char *iv,
375 int enc, const OSSL_PARAM params[])
377 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, params);
380 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
381 const unsigned char *key, const unsigned char *iv, int enc)
384 EVP_CIPHER_CTX_reset(ctx);
385 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, NULL);
388 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
389 ENGINE *impl, const unsigned char *key,
390 const unsigned char *iv, int enc)
392 return evp_cipher_init_internal(ctx, cipher, impl, key, iv, enc, NULL);
395 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
396 const unsigned char *in, int inl)
399 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
401 return EVP_DecryptUpdate(ctx, out, outl, in, inl);
404 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
407 return EVP_EncryptFinal_ex(ctx, out, outl);
409 return EVP_DecryptFinal_ex(ctx, out, outl);
412 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
415 return EVP_EncryptFinal(ctx, out, outl);
417 return EVP_DecryptFinal(ctx, out, outl);
420 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
421 const unsigned char *key, const unsigned char *iv)
423 return EVP_CipherInit(ctx, cipher, key, iv, 1);
426 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
427 ENGINE *impl, const unsigned char *key,
428 const unsigned char *iv)
430 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
433 int EVP_EncryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
434 const unsigned char *key, const unsigned char *iv,
435 const OSSL_PARAM params[])
437 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 1, params);
440 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
441 const unsigned char *key, const unsigned char *iv)
443 return EVP_CipherInit(ctx, cipher, key, iv, 0);
446 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
447 ENGINE *impl, const unsigned char *key,
448 const unsigned char *iv)
450 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
453 int EVP_DecryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
454 const unsigned char *key, const unsigned char *iv,
455 const OSSL_PARAM params[])
457 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 0, params);
461 * According to the letter of standard difference between pointers
462 * is specified to be valid only within same object. This makes
463 * it formally challenging to determine if input and output buffers
464 * are not partially overlapping with standard pointer arithmetic.
469 #if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE==64
471 * Then we have VMS that distinguishes itself by adhering to
472 * sizeof(size_t)==4 even in 64-bit builds, which means that
473 * difference between two pointers might be truncated to 32 bits.
474 * In the context one can even wonder how comparison for
475 * equality is implemented. To be on the safe side we adhere to
476 * PTRDIFF_T even for comparison for equality.
478 # define PTRDIFF_T uint64_t
480 # define PTRDIFF_T size_t
483 int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
485 PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
487 * Check for partially overlapping buffers. [Binary logical
488 * operations are used instead of boolean to minimize number
489 * of conditional branches.]
491 int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
492 (diff > (0 - (PTRDIFF_T)len)));
497 static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX *ctx,
498 unsigned char *out, int *outl,
499 const unsigned char *in, int inl)
501 int i, j, bl, cmpl = inl;
503 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
504 cmpl = (cmpl + 7) / 8;
506 bl = ctx->cipher->block_size;
508 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
509 /* If block size > 1 then the cipher will have to do this check */
510 if (bl == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
511 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
515 i = ctx->cipher->do_cipher(ctx, out, in, inl);
527 if (ossl_is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
528 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
532 if (ctx->buf_len == 0 && (inl & (ctx->block_mask)) == 0) {
533 if (ctx->cipher->do_cipher(ctx, out, in, inl)) {
542 OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
545 memcpy(&(ctx->buf[i]), in, inl);
553 * Once we've processed the first j bytes from in, the amount of
554 * data left that is a multiple of the block length is:
555 * (inl - j) & ~(bl - 1)
556 * We must ensure that this amount of data, plus the one block that
557 * we process from ctx->buf does not exceed INT_MAX
559 if (((inl - j) & ~(bl - 1)) > INT_MAX - bl) {
560 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
563 memcpy(&(ctx->buf[i]), in, j);
566 if (!ctx->cipher->do_cipher(ctx, out, ctx->buf, bl))
576 if (!ctx->cipher->do_cipher(ctx, out, in, inl))
582 memcpy(ctx->buf, &(in[inl]), i);
588 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
589 const unsigned char *in, int inl)
598 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
602 /* Prevent accidental use of decryption context when encrypting */
604 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
608 if (ctx->cipher == NULL) {
609 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
613 if (ctx->cipher->prov == NULL)
616 blocksize = ctx->cipher->block_size;
618 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
619 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
622 ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
623 inl + (blocksize == 1 ? 0 : blocksize), in,
627 if (soutl > INT_MAX) {
628 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
636 /* Code below to be removed when legacy support is dropped. */
639 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
642 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
645 ret = EVP_EncryptFinal_ex(ctx, out, outl);
649 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
652 unsigned int i, b, bl;
659 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
663 /* Prevent accidental use of decryption context when encrypting */
665 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
669 if (ctx->cipher == NULL) {
670 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
673 if (ctx->cipher->prov == NULL)
676 blocksize = EVP_CIPHER_CTX_block_size(ctx);
678 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
679 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
683 ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
684 blocksize == 1 ? 0 : blocksize);
687 if (soutl > INT_MAX) {
688 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
696 /* Code below to be removed when legacy support is dropped. */
699 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
700 ret = ctx->cipher->do_cipher(ctx, out, NULL, 0);
708 b = ctx->cipher->block_size;
709 OPENSSL_assert(b <= sizeof(ctx->buf));
715 if (ctx->flags & EVP_CIPH_NO_PADDING) {
717 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
725 for (i = bl; i < b; i++)
727 ret = ctx->cipher->do_cipher(ctx, out, ctx->buf, b);
735 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
736 const unsigned char *in, int inl)
738 int fix_len, cmpl = inl, ret;
746 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
750 /* Prevent accidental use of encryption context when decrypting */
752 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
756 if (ctx->cipher == NULL) {
757 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
760 if (ctx->cipher->prov == NULL)
763 blocksize = EVP_CIPHER_CTX_block_size(ctx);
765 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
766 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
769 ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
770 inl + (blocksize == 1 ? 0 : blocksize), in,
774 if (soutl > INT_MAX) {
775 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
783 /* Code below to be removed when legacy support is dropped. */
786 b = ctx->cipher->block_size;
788 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
789 cmpl = (cmpl + 7) / 8;
791 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
792 if (b == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
793 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
797 fix_len = ctx->cipher->do_cipher(ctx, out, in, inl);
811 if (ctx->flags & EVP_CIPH_NO_PADDING)
812 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
814 OPENSSL_assert(b <= sizeof(ctx->final));
816 if (ctx->final_used) {
817 /* see comment about PTRDIFF_T comparison above */
818 if (((PTRDIFF_T)out == (PTRDIFF_T)in)
819 || ossl_is_partially_overlapping(out, in, b)) {
820 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
824 * final_used is only ever set if buf_len is 0. Therefore the maximum
825 * length output we will ever see from evp_EncryptDecryptUpdate is
826 * the maximum multiple of the block length that is <= inl, or just:
828 * Since final_used has been set then the final output length is:
829 * (inl & ~(b - 1)) + b
830 * This must never exceed INT_MAX
832 if ((inl & ~(b - 1)) > INT_MAX - b) {
833 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
836 memcpy(out, ctx->final, b);
842 if (!evp_EncryptDecryptUpdate(ctx, out, outl, in, inl))
846 * if we have 'decrypted' a multiple of block size, make sure we have a
847 * copy of this last block
849 if (b > 1 && !ctx->buf_len) {
852 memcpy(ctx->final, &out[*outl], b);
862 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
865 ret = EVP_DecryptFinal_ex(ctx, out, outl);
869 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
880 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
884 /* Prevent accidental use of encryption context when decrypting */
886 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
890 if (ctx->cipher == NULL) {
891 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
895 if (ctx->cipher->prov == NULL)
898 blocksize = EVP_CIPHER_CTX_block_size(ctx);
900 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
901 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
905 ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
906 blocksize == 1 ? 0 : blocksize);
909 if (soutl > INT_MAX) {
910 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
918 /* Code below to be removed when legacy support is dropped. */
922 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
923 i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
931 b = ctx->cipher->block_size;
932 if (ctx->flags & EVP_CIPH_NO_PADDING) {
934 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
941 if (ctx->buf_len || !ctx->final_used) {
942 ERR_raise(ERR_LIB_EVP, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
945 OPENSSL_assert(b <= sizeof(ctx->final));
948 * The following assumes that the ciphertext has been authenticated.
949 * Otherwise it provides a padding oracle.
951 n = ctx->final[b - 1];
952 if (n == 0 || n > (int)b) {
953 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
956 for (i = 0; i < n; i++) {
957 if (ctx->final[--b] != n) {
958 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
962 n = ctx->cipher->block_size - n;
963 for (i = 0; i < n; i++)
964 out[i] = ctx->final[i];
971 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
973 if (c->cipher->prov != NULL) {
975 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
978 if (EVP_CIPHER_CTX_key_length(c) == keylen)
981 /* Check the cipher actually understands this parameter */
982 if (OSSL_PARAM_locate_const(EVP_CIPHER_settable_ctx_params(c->cipher),
983 OSSL_CIPHER_PARAM_KEYLEN) == NULL)
986 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &len);
987 ok = evp_do_ciph_ctx_setparams(c->cipher, c->provctx, params);
989 return ok > 0 ? 1 : 0;
992 /* Code below to be removed when legacy support is dropped. */
995 * Note there have never been any built-in ciphers that define this flag
996 * since it was first introduced.
998 if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
999 return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
1000 if (EVP_CIPHER_CTX_key_length(c) == keylen)
1002 if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
1003 c->key_len = keylen;
1006 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
1010 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
1013 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1014 unsigned int pd = pad;
1017 ctx->flags &= ~EVP_CIPH_NO_PADDING;
1019 ctx->flags |= EVP_CIPH_NO_PADDING;
1021 if (ctx->cipher != NULL && ctx->cipher->prov == NULL)
1023 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING, &pd);
1024 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1029 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1031 int ret = EVP_CTRL_RET_UNSUPPORTED;
1035 OSSL_PARAM params[4] = {
1036 OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END
1039 if (ctx == NULL || ctx->cipher == NULL) {
1040 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
1044 if (ctx->cipher->prov == NULL)
1048 case EVP_CTRL_SET_KEY_LENGTH:
1049 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &sz);
1051 case EVP_CTRL_RAND_KEY: /* Used by DES */
1054 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY,
1060 * EVP_CTRL_INIT is purely legacy, no provider counterpart.
1061 * As a matter of fact, this should be dead code, but some caller
1062 * might still do a direct control call with this command, so...
1063 * Legacy methods return 1 except for exceptional circumstances, so
1064 * we do the same here to not be disruptive.
1067 case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS: /* Used by DASYNC */
1070 case EVP_CTRL_AEAD_SET_IVLEN:
1073 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
1075 case EVP_CTRL_AEAD_SET_IV_FIXED:
1076 params[0] = OSSL_PARAM_construct_octet_string(
1077 OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, ptr, sz);
1079 case EVP_CTRL_GCM_IV_GEN:
1082 sz = 0; /* special case that uses the iv length */
1083 params[0] = OSSL_PARAM_construct_octet_string(
1084 OSSL_CIPHER_PARAM_AEAD_TLS1_GET_IV_GEN, ptr, sz);
1086 case EVP_CTRL_GCM_SET_IV_INV:
1089 params[0] = OSSL_PARAM_construct_octet_string(
1090 OSSL_CIPHER_PARAM_AEAD_TLS1_SET_IV_INV, ptr, sz);
1092 case EVP_CTRL_GET_RC5_ROUNDS:
1093 set_params = 0; /* Fall thru */
1094 case EVP_CTRL_SET_RC5_ROUNDS:
1097 i = (unsigned int)arg;
1098 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_ROUNDS, &i);
1100 case EVP_CTRL_SET_SPEED:
1103 i = (unsigned int)arg;
1104 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_SPEED, &i);
1106 case EVP_CTRL_AEAD_GET_TAG:
1107 set_params = 0; /* Fall thru */
1108 case EVP_CTRL_AEAD_SET_TAG:
1109 params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
1112 case EVP_CTRL_AEAD_TLS1_AAD:
1113 /* This one does a set and a get - since it returns a size */
1115 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD,
1117 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1121 OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, &sz);
1122 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1126 #ifndef OPENSSL_NO_RC2
1127 case EVP_CTRL_GET_RC2_KEY_BITS:
1128 set_params = 0; /* Fall thru */
1129 case EVP_CTRL_SET_RC2_KEY_BITS:
1130 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, &sz);
1132 #endif /* OPENSSL_NO_RC2 */
1133 #if !defined(OPENSSL_NO_MULTIBLOCK)
1134 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
1135 params[0] = OSSL_PARAM_construct_size_t(
1136 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT, &sz);
1137 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1141 params[0] = OSSL_PARAM_construct_size_t(
1142 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE, &sz);
1143 params[1] = OSSL_PARAM_construct_end();
1144 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1148 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: {
1149 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1150 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1152 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
1155 params[0] = OSSL_PARAM_construct_octet_string(
1156 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD, (void*)p->inp, p->len);
1157 params[1] = OSSL_PARAM_construct_uint(
1158 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1159 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1162 /* Retrieve the return values changed by the set */
1163 params[0] = OSSL_PARAM_construct_size_t(
1164 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN, &sz);
1165 params[1] = OSSL_PARAM_construct_uint(
1166 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1167 params[2] = OSSL_PARAM_construct_end();
1168 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1173 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: {
1174 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1175 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1177 params[0] = OSSL_PARAM_construct_octet_string(
1178 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC, p->out, p->len);
1180 params[1] = OSSL_PARAM_construct_octet_string(
1181 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN, (void*)p->inp,
1183 params[2] = OSSL_PARAM_construct_uint(
1184 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1185 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1188 params[0] = OSSL_PARAM_construct_size_t(
1189 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN, &sz);
1190 params[1] = OSSL_PARAM_construct_end();
1191 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1196 #endif /* OPENSSL_NO_MULTIBLOCK */
1197 case EVP_CTRL_AEAD_SET_MAC_KEY:
1200 params[0] = OSSL_PARAM_construct_octet_string(
1201 OSSL_CIPHER_PARAM_AEAD_MAC_KEY, ptr, sz);
1206 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1208 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1211 /* Code below to be removed when legacy support is dropped. */
1213 if (ctx->cipher->ctrl == NULL) {
1214 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
1218 ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
1221 if (ret == EVP_CTRL_RET_UNSUPPORTED) {
1222 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
1228 int EVP_CIPHER_get_params(EVP_CIPHER *cipher, OSSL_PARAM params[])
1230 if (cipher != NULL && cipher->get_params != NULL)
1231 return cipher->get_params(params);
1235 int EVP_CIPHER_CTX_set_params(EVP_CIPHER_CTX *ctx, const OSSL_PARAM params[])
1237 if (ctx->cipher != NULL && ctx->cipher->set_ctx_params != NULL)
1238 return ctx->cipher->set_ctx_params(ctx->provctx, params);
1242 int EVP_CIPHER_CTX_get_params(EVP_CIPHER_CTX *ctx, OSSL_PARAM params[])
1244 if (ctx->cipher != NULL && ctx->cipher->get_ctx_params != NULL)
1245 return ctx->cipher->get_ctx_params(ctx->provctx, params);
1249 const OSSL_PARAM *EVP_CIPHER_gettable_params(const EVP_CIPHER *cipher)
1251 if (cipher != NULL && cipher->gettable_params != NULL)
1252 return cipher->gettable_params(
1253 ossl_provider_ctx(EVP_CIPHER_provider(cipher)));
1257 const OSSL_PARAM *EVP_CIPHER_settable_ctx_params(const EVP_CIPHER *cipher)
1261 if (cipher != NULL && cipher->settable_ctx_params != NULL) {
1262 alg = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1263 return cipher->settable_ctx_params(NULL, alg);
1268 const OSSL_PARAM *EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER *cipher)
1272 if (cipher != NULL && cipher->gettable_ctx_params != NULL) {
1273 alg = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1274 return cipher->gettable_ctx_params(NULL, alg);
1279 const OSSL_PARAM *EVP_CIPHER_CTX_settable_params(EVP_CIPHER_CTX *cctx)
1283 if (cctx != NULL && cctx->cipher->settable_ctx_params != NULL) {
1284 alg = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1285 return cctx->cipher->settable_ctx_params(cctx->provctx, alg);
1290 const OSSL_PARAM *EVP_CIPHER_CTX_gettable_params(EVP_CIPHER_CTX *cctx)
1294 if (cctx != NULL && cctx->cipher->gettable_ctx_params != NULL) {
1295 alg = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1296 return cctx->cipher->gettable_ctx_params(cctx->provctx, alg);
1302 static OSSL_LIB_CTX *EVP_CIPHER_CTX_get_libctx(EVP_CIPHER_CTX *ctx)
1304 const EVP_CIPHER *cipher = ctx->cipher;
1305 const OSSL_PROVIDER *prov;
1310 prov = EVP_CIPHER_provider(cipher);
1311 return ossl_provider_libctx(prov);
1315 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
1317 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
1318 return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
1325 OSSL_LIB_CTX *libctx = EVP_CIPHER_CTX_get_libctx(ctx);
1327 kl = EVP_CIPHER_CTX_key_length(ctx);
1328 if (kl <= 0 || RAND_priv_bytes_ex(libctx, key, kl) <= 0)
1332 #endif /* FIPS_MODULE */
1335 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
1337 if ((in == NULL) || (in->cipher == NULL)) {
1338 ERR_raise(ERR_LIB_EVP, EVP_R_INPUT_NOT_INITIALIZED);
1342 if (in->cipher->prov == NULL)
1345 if (in->cipher->dupctx == NULL) {
1346 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1350 EVP_CIPHER_CTX_reset(out);
1353 out->provctx = NULL;
1355 if (in->fetched_cipher != NULL && !EVP_CIPHER_up_ref(in->fetched_cipher)) {
1356 out->fetched_cipher = NULL;
1360 out->provctx = in->cipher->dupctx(in->provctx);
1361 if (out->provctx == NULL) {
1362 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1368 /* Code below to be removed when legacy support is dropped. */
1371 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
1372 /* Make sure it's safe to copy a cipher context using an ENGINE */
1373 if (in->engine && !ENGINE_init(in->engine)) {
1374 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
1379 EVP_CIPHER_CTX_reset(out);
1380 memcpy(out, in, sizeof(*out));
1382 if (in->cipher_data && in->cipher->ctx_size) {
1383 out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
1384 if (out->cipher_data == NULL) {
1386 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1389 memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
1392 if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
1393 if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
1395 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1401 EVP_CIPHER *evp_cipher_new(void)
1403 EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
1405 if (cipher != NULL) {
1406 cipher->lock = CRYPTO_THREAD_lock_new();
1407 if (cipher->lock == NULL) {
1408 OPENSSL_free(cipher);
1417 * FIPS module note: since internal fetches will be entirely
1418 * provider based, we know that none of its code depends on legacy
1419 * NIDs or any functionality that use them.
1422 /* After removal of legacy support get rid of the need for legacy NIDs */
1423 static void set_legacy_nid(const char *name, void *vlegacy_nid)
1426 int *legacy_nid = vlegacy_nid;
1428 * We use lowest level function to get the associated method, because
1429 * higher level functions such as EVP_get_cipherbyname() have changed
1430 * to look at providers too.
1432 const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
1434 if (*legacy_nid == -1) /* We found a clash already */
1436 if (legacy_method == NULL)
1438 nid = EVP_CIPHER_nid(legacy_method);
1439 if (*legacy_nid != NID_undef && *legacy_nid != nid) {
1447 static void *evp_cipher_from_algorithm(const int name_id,
1448 const OSSL_ALGORITHM *algodef,
1449 OSSL_PROVIDER *prov)
1451 const OSSL_DISPATCH *fns = algodef->implementation;
1452 EVP_CIPHER *cipher = NULL;
1453 int fnciphcnt = 0, fnctxcnt = 0;
1455 if ((cipher = evp_cipher_new()) == NULL) {
1456 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1461 cipher->nid = NID_undef;
1462 if (!evp_names_do_all(prov, name_id, set_legacy_nid, &cipher->nid)
1463 || cipher->nid == -1) {
1464 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1465 EVP_CIPHER_free(cipher);
1470 cipher->name_id = name_id;
1471 cipher->description = algodef->algorithm_description;
1473 for (; fns->function_id != 0; fns++) {
1474 switch (fns->function_id) {
1475 case OSSL_FUNC_CIPHER_NEWCTX:
1476 if (cipher->newctx != NULL)
1478 cipher->newctx = OSSL_FUNC_cipher_newctx(fns);
1481 case OSSL_FUNC_CIPHER_ENCRYPT_INIT:
1482 if (cipher->einit != NULL)
1484 cipher->einit = OSSL_FUNC_cipher_encrypt_init(fns);
1487 case OSSL_FUNC_CIPHER_DECRYPT_INIT:
1488 if (cipher->dinit != NULL)
1490 cipher->dinit = OSSL_FUNC_cipher_decrypt_init(fns);
1493 case OSSL_FUNC_CIPHER_UPDATE:
1494 if (cipher->cupdate != NULL)
1496 cipher->cupdate = OSSL_FUNC_cipher_update(fns);
1499 case OSSL_FUNC_CIPHER_FINAL:
1500 if (cipher->cfinal != NULL)
1502 cipher->cfinal = OSSL_FUNC_cipher_final(fns);
1505 case OSSL_FUNC_CIPHER_CIPHER:
1506 if (cipher->ccipher != NULL)
1508 cipher->ccipher = OSSL_FUNC_cipher_cipher(fns);
1510 case OSSL_FUNC_CIPHER_FREECTX:
1511 if (cipher->freectx != NULL)
1513 cipher->freectx = OSSL_FUNC_cipher_freectx(fns);
1516 case OSSL_FUNC_CIPHER_DUPCTX:
1517 if (cipher->dupctx != NULL)
1519 cipher->dupctx = OSSL_FUNC_cipher_dupctx(fns);
1521 case OSSL_FUNC_CIPHER_GET_PARAMS:
1522 if (cipher->get_params != NULL)
1524 cipher->get_params = OSSL_FUNC_cipher_get_params(fns);
1526 case OSSL_FUNC_CIPHER_GET_CTX_PARAMS:
1527 if (cipher->get_ctx_params != NULL)
1529 cipher->get_ctx_params = OSSL_FUNC_cipher_get_ctx_params(fns);
1531 case OSSL_FUNC_CIPHER_SET_CTX_PARAMS:
1532 if (cipher->set_ctx_params != NULL)
1534 cipher->set_ctx_params = OSSL_FUNC_cipher_set_ctx_params(fns);
1536 case OSSL_FUNC_CIPHER_GETTABLE_PARAMS:
1537 if (cipher->gettable_params != NULL)
1539 cipher->gettable_params = OSSL_FUNC_cipher_gettable_params(fns);
1541 case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS:
1542 if (cipher->gettable_ctx_params != NULL)
1544 cipher->gettable_ctx_params =
1545 OSSL_FUNC_cipher_gettable_ctx_params(fns);
1547 case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS:
1548 if (cipher->settable_ctx_params != NULL)
1550 cipher->settable_ctx_params =
1551 OSSL_FUNC_cipher_settable_ctx_params(fns);
1555 if ((fnciphcnt != 0 && fnciphcnt != 3 && fnciphcnt != 4)
1556 || (fnciphcnt == 0 && cipher->ccipher == NULL)
1559 * In order to be a consistent set of functions we must have at least
1560 * a complete set of "encrypt" functions, or a complete set of "decrypt"
1561 * functions, or a single "cipher" function. In all cases we need both
1562 * the "newctx" and "freectx" functions.
1564 EVP_CIPHER_free(cipher);
1565 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
1568 cipher->prov = prov;
1570 ossl_provider_up_ref(prov);
1572 if (!evp_cipher_cache_constants(cipher)) {
1573 EVP_CIPHER_free(cipher);
1574 ERR_raise(ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED);
1581 static int evp_cipher_up_ref(void *cipher)
1583 return EVP_CIPHER_up_ref(cipher);
1586 static void evp_cipher_free(void *cipher)
1588 EVP_CIPHER_free(cipher);
1591 EVP_CIPHER *EVP_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
1592 const char *properties)
1594 EVP_CIPHER *cipher =
1595 evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
1596 evp_cipher_from_algorithm, evp_cipher_up_ref,
1602 int EVP_CIPHER_up_ref(EVP_CIPHER *cipher)
1606 if (cipher->origin == EVP_ORIG_DYNAMIC)
1607 CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
1611 void evp_cipher_free_int(EVP_CIPHER *cipher)
1613 ossl_provider_free(cipher->prov);
1614 CRYPTO_THREAD_lock_free(cipher->lock);
1615 OPENSSL_free(cipher);
1618 void EVP_CIPHER_free(EVP_CIPHER *cipher)
1622 if (cipher == NULL || cipher->origin != EVP_ORIG_DYNAMIC)
1625 CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
1628 evp_cipher_free_int(cipher);
1631 void EVP_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
1632 void (*fn)(EVP_CIPHER *mac, void *arg),
1635 evp_generic_do_all(libctx, OSSL_OP_CIPHER,
1636 (void (*)(void *, void *))fn, arg,
1637 evp_cipher_from_algorithm, evp_cipher_free);