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)
71 EVP_CIPHER_CTX_reset(ctx);
75 static int evp_cipher_init_internal(EVP_CIPHER_CTX *ctx,
76 const EVP_CIPHER *cipher,
77 ENGINE *impl, const unsigned char *key,
78 const unsigned char *iv, int enc,
79 const OSSL_PARAM params[])
82 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
83 ENGINE *tmpimpl = NULL;
86 * enc == 1 means we are encrypting.
87 * enc == 0 means we are decrypting.
88 * enc == -1 means, use the previously initialised value for encrypt/decrypt
98 if (cipher == NULL && ctx->cipher == NULL) {
99 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
103 /* Code below to be removed when legacy support is dropped. */
105 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
107 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
108 * this context may already have an ENGINE! Try to avoid releasing the
109 * previous handle, re-querying for an ENGINE, and having a
110 * reinitialisation, when it may all be unnecessary.
112 if (ctx->engine && ctx->cipher
113 && (cipher == NULL || cipher->nid == ctx->cipher->nid))
116 if (cipher != NULL && impl == NULL) {
117 /* Ask if an ENGINE is reserved for this job */
118 tmpimpl = ENGINE_get_cipher_engine(cipher->nid);
123 * If there are engines involved then we should use legacy handling for now.
125 if (ctx->engine != NULL
126 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
130 if (ctx->cipher == ctx->fetched_cipher)
132 EVP_CIPHER_free(ctx->fetched_cipher);
133 ctx->fetched_cipher = NULL;
137 * Ensure a context left lying around from last time is cleared
140 if (cipher != NULL && ctx->cipher != NULL) {
141 OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size);
142 ctx->cipher_data = NULL;
146 /* Start of non-legacy code below */
148 /* Ensure a context left lying around from last time is cleared */
149 if (cipher != NULL && ctx->cipher != NULL) {
150 unsigned long flags = ctx->flags;
152 EVP_CIPHER_CTX_reset(ctx);
153 /* Restore encrypt and flags */
159 cipher = ctx->cipher;
161 if (cipher->prov == NULL) {
163 /* We only do explicit fetches inside the FIPS module */
164 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
167 EVP_CIPHER *provciph =
168 EVP_CIPHER_fetch(NULL,
169 cipher->nid == NID_undef ? "NULL"
170 : OBJ_nid2sn(cipher->nid),
173 if (provciph == NULL)
176 EVP_CIPHER_free(ctx->fetched_cipher);
177 ctx->fetched_cipher = provciph;
181 if (cipher->prov != NULL) {
182 if (!EVP_CIPHER_up_ref((EVP_CIPHER *)cipher)) {
183 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
186 EVP_CIPHER_free(ctx->fetched_cipher);
187 ctx->fetched_cipher = (EVP_CIPHER *)cipher;
189 ctx->cipher = cipher;
190 if (ctx->provctx == NULL) {
191 ctx->provctx = ctx->cipher->newctx(ossl_provider_ctx(cipher->prov));
192 if (ctx->provctx == NULL) {
193 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
198 if ((ctx->flags & EVP_CIPH_NO_PADDING) != 0) {
200 * If this ctx was already set up for no padding then we need to tell
201 * the new cipher about it.
203 if (!EVP_CIPHER_CTX_set_padding(ctx, 0))
208 if (ctx->cipher->einit == NULL) {
209 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
213 return ctx->cipher->einit(ctx->provctx,
216 : EVP_CIPHER_CTX_key_length(ctx),
219 : EVP_CIPHER_CTX_iv_length(ctx),
223 if (ctx->cipher->dinit == NULL) {
224 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
228 return ctx->cipher->dinit(ctx->provctx,
231 : EVP_CIPHER_CTX_key_length(ctx),
234 : EVP_CIPHER_CTX_iv_length(ctx),
237 /* Code below to be removed when legacy support is dropped. */
240 if (cipher != NULL) {
242 * Ensure a context left lying around from last time is cleared (we
243 * previously attempted to avoid this if the same ENGINE and
244 * EVP_CIPHER could be used).
247 unsigned long flags = ctx->flags;
248 EVP_CIPHER_CTX_reset(ctx);
249 /* Restore encrypt and flags */
253 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
255 if (!ENGINE_init(impl)) {
256 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
263 /* There's an ENGINE for this job ... (apparently) */
264 const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
268 * One positive side-effect of US's export control history,
269 * is that we should at least be able to avoid using US
270 * misspellings of "initialisation"?
272 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
275 /* We'll use the ENGINE's private cipher definition */
278 * Store the ENGINE functional reference so we know 'cipher' came
279 * from an ENGINE and we need to release it when done.
287 ctx->cipher = cipher;
288 if (ctx->cipher->ctx_size) {
289 ctx->cipher_data = OPENSSL_zalloc(ctx->cipher->ctx_size);
290 if (ctx->cipher_data == NULL) {
292 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
296 ctx->cipher_data = NULL;
298 ctx->key_len = cipher->key_len;
299 /* Preserve wrap enable flag, zero everything else */
300 ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
301 if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
302 if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
304 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
309 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
312 if (ctx->cipher == NULL)
315 /* we assume block size is a power of 2 in *cryptUpdate */
316 OPENSSL_assert(ctx->cipher->block_size == 1
317 || ctx->cipher->block_size == 8
318 || ctx->cipher->block_size == 16);
320 if (!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
321 && EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE) {
322 ERR_raise(ERR_LIB_EVP, EVP_R_WRAP_MODE_NOT_ALLOWED);
326 if (!(EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx)) & EVP_CIPH_CUSTOM_IV)) {
327 switch (EVP_CIPHER_CTX_mode(ctx)) {
329 case EVP_CIPH_STREAM_CIPHER:
330 case EVP_CIPH_ECB_MODE:
333 case EVP_CIPH_CFB_MODE:
334 case EVP_CIPH_OFB_MODE:
339 case EVP_CIPH_CBC_MODE:
340 n = EVP_CIPHER_CTX_iv_length(ctx);
341 if (!ossl_assert(n >= 0 && n <= (int)sizeof(ctx->iv)))
344 memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
345 memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
348 case EVP_CIPH_CTR_MODE:
350 /* Don't reuse IV for CTR mode */
352 memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
360 if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
361 if (!ctx->cipher->init(ctx, key, iv, enc))
366 ctx->block_mask = ctx->cipher->block_size - 1;
370 int EVP_CipherInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
371 const unsigned char *key, const unsigned char *iv,
372 int enc, const OSSL_PARAM params[])
374 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, params);
377 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
378 const unsigned char *key, const unsigned char *iv, int enc)
381 EVP_CIPHER_CTX_reset(ctx);
382 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, NULL);
385 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
386 ENGINE *impl, const unsigned char *key,
387 const unsigned char *iv, int enc)
389 return evp_cipher_init_internal(ctx, cipher, impl, key, iv, enc, NULL);
392 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
393 const unsigned char *in, int inl)
396 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
398 return EVP_DecryptUpdate(ctx, out, outl, in, inl);
401 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
404 return EVP_EncryptFinal_ex(ctx, out, outl);
406 return EVP_DecryptFinal_ex(ctx, out, outl);
409 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
412 return EVP_EncryptFinal(ctx, out, outl);
414 return EVP_DecryptFinal(ctx, out, outl);
417 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
418 const unsigned char *key, const unsigned char *iv)
420 return EVP_CipherInit(ctx, cipher, key, iv, 1);
423 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
424 ENGINE *impl, const unsigned char *key,
425 const unsigned char *iv)
427 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
430 int EVP_EncryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
431 const unsigned char *key, const unsigned char *iv,
432 const OSSL_PARAM params[])
434 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 1, params);
437 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
438 const unsigned char *key, const unsigned char *iv)
440 return EVP_CipherInit(ctx, cipher, key, iv, 0);
443 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
444 ENGINE *impl, const unsigned char *key,
445 const unsigned char *iv)
447 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
450 int EVP_DecryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
451 const unsigned char *key, const unsigned char *iv,
452 const OSSL_PARAM params[])
454 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 0, params);
458 * According to the letter of standard difference between pointers
459 * is specified to be valid only within same object. This makes
460 * it formally challenging to determine if input and output buffers
461 * are not partially overlapping with standard pointer arithmetic.
466 #if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE==64
468 * Then we have VMS that distinguishes itself by adhering to
469 * sizeof(size_t)==4 even in 64-bit builds, which means that
470 * difference between two pointers might be truncated to 32 bits.
471 * In the context one can even wonder how comparison for
472 * equality is implemented. To be on the safe side we adhere to
473 * PTRDIFF_T even for comparison for equality.
475 # define PTRDIFF_T uint64_t
477 # define PTRDIFF_T size_t
480 int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
482 PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
484 * Check for partially overlapping buffers. [Binary logical
485 * operations are used instead of boolean to minimize number
486 * of conditional branches.]
488 int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
489 (diff > (0 - (PTRDIFF_T)len)));
494 static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX *ctx,
495 unsigned char *out, int *outl,
496 const unsigned char *in, int inl)
498 int i, j, bl, cmpl = inl;
500 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
501 cmpl = (cmpl + 7) / 8;
503 bl = ctx->cipher->block_size;
505 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
506 /* If block size > 1 then the cipher will have to do this check */
507 if (bl == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
508 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
512 i = ctx->cipher->do_cipher(ctx, out, in, inl);
524 if (ossl_is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
525 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
529 if (ctx->buf_len == 0 && (inl & (ctx->block_mask)) == 0) {
530 if (ctx->cipher->do_cipher(ctx, out, in, inl)) {
539 OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
542 memcpy(&(ctx->buf[i]), in, inl);
550 * Once we've processed the first j bytes from in, the amount of
551 * data left that is a multiple of the block length is:
552 * (inl - j) & ~(bl - 1)
553 * We must ensure that this amount of data, plus the one block that
554 * we process from ctx->buf does not exceed INT_MAX
556 if (((inl - j) & ~(bl - 1)) > INT_MAX - bl) {
557 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
560 memcpy(&(ctx->buf[i]), in, j);
563 if (!ctx->cipher->do_cipher(ctx, out, ctx->buf, bl))
573 if (!ctx->cipher->do_cipher(ctx, out, in, inl))
579 memcpy(ctx->buf, &(in[inl]), i);
585 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
586 const unsigned char *in, int inl)
595 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
599 /* Prevent accidental use of decryption context when encrypting */
601 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
605 if (ctx->cipher == NULL) {
606 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
610 if (ctx->cipher->prov == NULL)
613 blocksize = ctx->cipher->block_size;
615 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
616 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
619 ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
620 inl + (blocksize == 1 ? 0 : blocksize), in,
624 if (soutl > INT_MAX) {
625 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
633 /* Code below to be removed when legacy support is dropped. */
636 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
639 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
642 ret = EVP_EncryptFinal_ex(ctx, out, outl);
646 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
649 unsigned int i, b, bl;
656 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
660 /* Prevent accidental use of decryption context when encrypting */
662 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
666 if (ctx->cipher == NULL) {
667 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
670 if (ctx->cipher->prov == NULL)
673 blocksize = EVP_CIPHER_CTX_block_size(ctx);
675 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
676 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
680 ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
681 blocksize == 1 ? 0 : blocksize);
684 if (soutl > INT_MAX) {
685 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
693 /* Code below to be removed when legacy support is dropped. */
696 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
697 ret = ctx->cipher->do_cipher(ctx, out, NULL, 0);
705 b = ctx->cipher->block_size;
706 OPENSSL_assert(b <= sizeof(ctx->buf));
712 if (ctx->flags & EVP_CIPH_NO_PADDING) {
714 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
722 for (i = bl; i < b; i++)
724 ret = ctx->cipher->do_cipher(ctx, out, ctx->buf, b);
732 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
733 const unsigned char *in, int inl)
735 int fix_len, cmpl = inl, ret;
743 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
747 /* Prevent accidental use of encryption context when decrypting */
749 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
753 if (ctx->cipher == NULL) {
754 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
757 if (ctx->cipher->prov == NULL)
760 blocksize = EVP_CIPHER_CTX_block_size(ctx);
762 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
763 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
766 ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,
767 inl + (blocksize == 1 ? 0 : blocksize), in,
771 if (soutl > INT_MAX) {
772 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
780 /* Code below to be removed when legacy support is dropped. */
783 b = ctx->cipher->block_size;
785 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
786 cmpl = (cmpl + 7) / 8;
788 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
789 if (b == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
790 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
794 fix_len = ctx->cipher->do_cipher(ctx, out, in, inl);
808 if (ctx->flags & EVP_CIPH_NO_PADDING)
809 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
811 OPENSSL_assert(b <= sizeof(ctx->final));
813 if (ctx->final_used) {
814 /* see comment about PTRDIFF_T comparison above */
815 if (((PTRDIFF_T)out == (PTRDIFF_T)in)
816 || ossl_is_partially_overlapping(out, in, b)) {
817 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
821 * final_used is only ever set if buf_len is 0. Therefore the maximum
822 * length output we will ever see from evp_EncryptDecryptUpdate is
823 * the maximum multiple of the block length that is <= inl, or just:
825 * Since final_used has been set then the final output length is:
826 * (inl & ~(b - 1)) + b
827 * This must never exceed INT_MAX
829 if ((inl & ~(b - 1)) > INT_MAX - b) {
830 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
833 memcpy(out, ctx->final, b);
839 if (!evp_EncryptDecryptUpdate(ctx, out, outl, in, inl))
843 * if we have 'decrypted' a multiple of block size, make sure we have a
844 * copy of this last block
846 if (b > 1 && !ctx->buf_len) {
849 memcpy(ctx->final, &out[*outl], b);
859 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
862 ret = EVP_DecryptFinal_ex(ctx, out, outl);
866 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
877 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
881 /* Prevent accidental use of encryption context when decrypting */
883 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
887 if (ctx->cipher == NULL) {
888 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
892 if (ctx->cipher->prov == NULL)
895 blocksize = EVP_CIPHER_CTX_block_size(ctx);
897 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
898 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
902 ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl,
903 blocksize == 1 ? 0 : blocksize);
906 if (soutl > INT_MAX) {
907 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
915 /* Code below to be removed when legacy support is dropped. */
919 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
920 i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
928 b = ctx->cipher->block_size;
929 if (ctx->flags & EVP_CIPH_NO_PADDING) {
931 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
938 if (ctx->buf_len || !ctx->final_used) {
939 ERR_raise(ERR_LIB_EVP, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
942 OPENSSL_assert(b <= sizeof(ctx->final));
945 * The following assumes that the ciphertext has been authenticated.
946 * Otherwise it provides a padding oracle.
948 n = ctx->final[b - 1];
949 if (n == 0 || n > (int)b) {
950 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
953 for (i = 0; i < n; i++) {
954 if (ctx->final[--b] != n) {
955 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
959 n = ctx->cipher->block_size - n;
960 for (i = 0; i < n; i++)
961 out[i] = ctx->final[i];
968 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
970 if (c->cipher->prov != NULL) {
972 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
975 if (EVP_CIPHER_CTX_key_length(c) == keylen)
978 /* Check the cipher actually understands this parameter */
979 if (OSSL_PARAM_locate_const(EVP_CIPHER_settable_ctx_params(c->cipher),
980 OSSL_CIPHER_PARAM_KEYLEN) == NULL)
983 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &len);
984 ok = evp_do_ciph_ctx_setparams(c->cipher, c->provctx, params);
986 return ok > 0 ? 1 : 0;
989 /* Code below to be removed when legacy support is dropped. */
992 * Note there have never been any built-in ciphers that define this flag
993 * since it was first introduced.
995 if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
996 return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
997 if (EVP_CIPHER_CTX_key_length(c) == keylen)
999 if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
1000 c->key_len = keylen;
1003 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
1007 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
1010 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1011 unsigned int pd = pad;
1014 ctx->flags &= ~EVP_CIPH_NO_PADDING;
1016 ctx->flags |= EVP_CIPH_NO_PADDING;
1018 if (ctx->cipher != NULL && ctx->cipher->prov == NULL)
1020 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING, &pd);
1021 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1026 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1028 int ret = EVP_CTRL_RET_UNSUPPORTED;
1032 OSSL_PARAM params[4] = {
1033 OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END
1036 if (ctx == NULL || ctx->cipher == NULL) {
1037 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
1041 if (ctx->cipher->prov == NULL)
1045 case EVP_CTRL_SET_KEY_LENGTH:
1046 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &sz);
1048 case EVP_CTRL_RAND_KEY: /* Used by DES */
1051 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY,
1057 * EVP_CTRL_INIT is purely legacy, no provider counterpart.
1058 * As a matter of fact, this should be dead code, but some caller
1059 * might still do a direct control call with this command, so...
1060 * Legacy methods return 1 except for exceptional circumstances, so
1061 * we do the same here to not be disruptive.
1064 case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS: /* Used by DASYNC */
1067 case EVP_CTRL_AEAD_SET_IVLEN:
1070 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
1072 case EVP_CTRL_AEAD_SET_IV_FIXED:
1073 params[0] = OSSL_PARAM_construct_octet_string(
1074 OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, ptr, sz);
1076 case EVP_CTRL_GCM_IV_GEN:
1079 sz = 0; /* special case that uses the iv length */
1080 params[0] = OSSL_PARAM_construct_octet_string(
1081 OSSL_CIPHER_PARAM_AEAD_TLS1_GET_IV_GEN, ptr, sz);
1083 case EVP_CTRL_GCM_SET_IV_INV:
1086 params[0] = OSSL_PARAM_construct_octet_string(
1087 OSSL_CIPHER_PARAM_AEAD_TLS1_SET_IV_INV, ptr, sz);
1089 case EVP_CTRL_GET_RC5_ROUNDS:
1090 set_params = 0; /* Fall thru */
1091 case EVP_CTRL_SET_RC5_ROUNDS:
1094 i = (unsigned int)arg;
1095 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_ROUNDS, &i);
1097 case EVP_CTRL_SET_SPEED:
1100 i = (unsigned int)arg;
1101 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_SPEED, &i);
1103 case EVP_CTRL_AEAD_GET_TAG:
1104 set_params = 0; /* Fall thru */
1105 case EVP_CTRL_AEAD_SET_TAG:
1106 params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
1109 case EVP_CTRL_AEAD_TLS1_AAD:
1110 /* This one does a set and a get - since it returns a size */
1112 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD,
1114 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1118 OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, &sz);
1119 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1123 #ifndef OPENSSL_NO_RC2
1124 case EVP_CTRL_GET_RC2_KEY_BITS:
1125 set_params = 0; /* Fall thru */
1126 case EVP_CTRL_SET_RC2_KEY_BITS:
1127 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, &sz);
1129 #endif /* OPENSSL_NO_RC2 */
1130 #if !defined(OPENSSL_NO_MULTIBLOCK)
1131 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
1132 params[0] = OSSL_PARAM_construct_size_t(
1133 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT, &sz);
1134 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1138 params[0] = OSSL_PARAM_construct_size_t(
1139 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE, &sz);
1140 params[1] = OSSL_PARAM_construct_end();
1141 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1145 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: {
1146 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1147 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1149 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
1152 params[0] = OSSL_PARAM_construct_octet_string(
1153 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD, (void*)p->inp, p->len);
1154 params[1] = OSSL_PARAM_construct_uint(
1155 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1156 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1159 /* Retrieve the return values changed by the set */
1160 params[0] = OSSL_PARAM_construct_size_t(
1161 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN, &sz);
1162 params[1] = OSSL_PARAM_construct_uint(
1163 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1164 params[2] = OSSL_PARAM_construct_end();
1165 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1170 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: {
1171 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1172 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1174 params[0] = OSSL_PARAM_construct_octet_string(
1175 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC, p->out, p->len);
1177 params[1] = OSSL_PARAM_construct_octet_string(
1178 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN, (void*)p->inp,
1180 params[2] = OSSL_PARAM_construct_uint(
1181 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1182 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1185 params[0] = OSSL_PARAM_construct_size_t(
1186 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN, &sz);
1187 params[1] = OSSL_PARAM_construct_end();
1188 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1193 #endif /* OPENSSL_NO_MULTIBLOCK */
1194 case EVP_CTRL_AEAD_SET_MAC_KEY:
1197 params[0] = OSSL_PARAM_construct_octet_string(
1198 OSSL_CIPHER_PARAM_AEAD_MAC_KEY, ptr, sz);
1203 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
1205 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
1208 /* Code below to be removed when legacy support is dropped. */
1210 if (ctx->cipher->ctrl == NULL) {
1211 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
1215 ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
1218 if (ret == EVP_CTRL_RET_UNSUPPORTED) {
1219 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
1225 int EVP_CIPHER_get_params(EVP_CIPHER *cipher, OSSL_PARAM params[])
1227 if (cipher != NULL && cipher->get_params != NULL)
1228 return cipher->get_params(params);
1232 int EVP_CIPHER_CTX_set_params(EVP_CIPHER_CTX *ctx, const OSSL_PARAM params[])
1234 if (ctx->cipher != NULL && ctx->cipher->set_ctx_params != NULL)
1235 return ctx->cipher->set_ctx_params(ctx->provctx, params);
1239 int EVP_CIPHER_CTX_get_params(EVP_CIPHER_CTX *ctx, OSSL_PARAM params[])
1241 if (ctx->cipher != NULL && ctx->cipher->get_ctx_params != NULL)
1242 return ctx->cipher->get_ctx_params(ctx->provctx, params);
1246 const OSSL_PARAM *EVP_CIPHER_gettable_params(const EVP_CIPHER *cipher)
1248 if (cipher != NULL && cipher->gettable_params != NULL)
1249 return cipher->gettable_params(
1250 ossl_provider_ctx(EVP_CIPHER_provider(cipher)));
1254 const OSSL_PARAM *EVP_CIPHER_settable_ctx_params(const EVP_CIPHER *cipher)
1258 if (cipher != NULL && cipher->settable_ctx_params != NULL) {
1259 alg = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1260 return cipher->settable_ctx_params(NULL, alg);
1265 const OSSL_PARAM *EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER *cipher)
1269 if (cipher != NULL && cipher->gettable_ctx_params != NULL) {
1270 alg = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1271 return cipher->gettable_ctx_params(NULL, alg);
1276 const OSSL_PARAM *EVP_CIPHER_CTX_settable_params(EVP_CIPHER_CTX *cctx)
1280 if (cctx != NULL && cctx->cipher->settable_ctx_params != NULL) {
1281 alg = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1282 return cctx->cipher->settable_ctx_params(cctx->provctx, alg);
1287 const OSSL_PARAM *EVP_CIPHER_CTX_gettable_params(EVP_CIPHER_CTX *cctx)
1291 if (cctx != NULL && cctx->cipher->gettable_ctx_params != NULL) {
1292 alg = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1293 return cctx->cipher->gettable_ctx_params(cctx->provctx, alg);
1299 static OSSL_LIB_CTX *EVP_CIPHER_CTX_get_libctx(EVP_CIPHER_CTX *ctx)
1301 const EVP_CIPHER *cipher = ctx->cipher;
1302 const OSSL_PROVIDER *prov;
1307 prov = EVP_CIPHER_provider(cipher);
1308 return ossl_provider_libctx(prov);
1312 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
1314 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
1315 return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
1322 OSSL_LIB_CTX *libctx = EVP_CIPHER_CTX_get_libctx(ctx);
1324 kl = EVP_CIPHER_CTX_key_length(ctx);
1325 if (kl <= 0 || RAND_priv_bytes_ex(libctx, key, kl) <= 0)
1329 #endif /* FIPS_MODULE */
1332 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
1334 if ((in == NULL) || (in->cipher == NULL)) {
1335 ERR_raise(ERR_LIB_EVP, EVP_R_INPUT_NOT_INITIALIZED);
1339 if (in->cipher->prov == NULL)
1342 if (in->cipher->dupctx == NULL) {
1343 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1347 EVP_CIPHER_CTX_reset(out);
1350 out->provctx = NULL;
1352 if (in->fetched_cipher != NULL && !EVP_CIPHER_up_ref(in->fetched_cipher)) {
1353 out->fetched_cipher = NULL;
1357 out->provctx = in->cipher->dupctx(in->provctx);
1358 if (out->provctx == NULL) {
1359 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1365 /* Code below to be removed when legacy support is dropped. */
1368 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
1369 /* Make sure it's safe to copy a cipher context using an ENGINE */
1370 if (in->engine && !ENGINE_init(in->engine)) {
1371 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
1376 EVP_CIPHER_CTX_reset(out);
1377 memcpy(out, in, sizeof(*out));
1379 if (in->cipher_data && in->cipher->ctx_size) {
1380 out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
1381 if (out->cipher_data == NULL) {
1383 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1386 memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
1389 if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
1390 if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
1392 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1398 EVP_CIPHER *evp_cipher_new(void)
1400 EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
1402 if (cipher != NULL) {
1403 cipher->lock = CRYPTO_THREAD_lock_new();
1404 if (cipher->lock == NULL) {
1405 OPENSSL_free(cipher);
1414 * FIPS module note: since internal fetches will be entirely
1415 * provider based, we know that none of its code depends on legacy
1416 * NIDs or any functionality that use them.
1419 /* After removal of legacy support get rid of the need for legacy NIDs */
1420 static void set_legacy_nid(const char *name, void *vlegacy_nid)
1423 int *legacy_nid = vlegacy_nid;
1425 * We use lowest level function to get the associated method, because
1426 * higher level functions such as EVP_get_cipherbyname() have changed
1427 * to look at providers too.
1429 const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
1431 if (*legacy_nid == -1) /* We found a clash already */
1433 if (legacy_method == NULL)
1435 nid = EVP_CIPHER_nid(legacy_method);
1436 if (*legacy_nid != NID_undef && *legacy_nid != nid) {
1444 static void *evp_cipher_from_algorithm(const int name_id,
1445 const OSSL_ALGORITHM *algodef,
1446 OSSL_PROVIDER *prov)
1448 const OSSL_DISPATCH *fns = algodef->implementation;
1449 EVP_CIPHER *cipher = NULL;
1450 int fnciphcnt = 0, fnctxcnt = 0;
1452 if ((cipher = evp_cipher_new()) == NULL) {
1453 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1458 cipher->nid = NID_undef;
1459 if (!evp_names_do_all(prov, name_id, set_legacy_nid, &cipher->nid)
1460 || cipher->nid == -1) {
1461 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1462 EVP_CIPHER_free(cipher);
1467 cipher->name_id = name_id;
1468 cipher->description = algodef->algorithm_description;
1470 for (; fns->function_id != 0; fns++) {
1471 switch (fns->function_id) {
1472 case OSSL_FUNC_CIPHER_NEWCTX:
1473 if (cipher->newctx != NULL)
1475 cipher->newctx = OSSL_FUNC_cipher_newctx(fns);
1478 case OSSL_FUNC_CIPHER_ENCRYPT_INIT:
1479 if (cipher->einit != NULL)
1481 cipher->einit = OSSL_FUNC_cipher_encrypt_init(fns);
1484 case OSSL_FUNC_CIPHER_DECRYPT_INIT:
1485 if (cipher->dinit != NULL)
1487 cipher->dinit = OSSL_FUNC_cipher_decrypt_init(fns);
1490 case OSSL_FUNC_CIPHER_UPDATE:
1491 if (cipher->cupdate != NULL)
1493 cipher->cupdate = OSSL_FUNC_cipher_update(fns);
1496 case OSSL_FUNC_CIPHER_FINAL:
1497 if (cipher->cfinal != NULL)
1499 cipher->cfinal = OSSL_FUNC_cipher_final(fns);
1502 case OSSL_FUNC_CIPHER_CIPHER:
1503 if (cipher->ccipher != NULL)
1505 cipher->ccipher = OSSL_FUNC_cipher_cipher(fns);
1507 case OSSL_FUNC_CIPHER_FREECTX:
1508 if (cipher->freectx != NULL)
1510 cipher->freectx = OSSL_FUNC_cipher_freectx(fns);
1513 case OSSL_FUNC_CIPHER_DUPCTX:
1514 if (cipher->dupctx != NULL)
1516 cipher->dupctx = OSSL_FUNC_cipher_dupctx(fns);
1518 case OSSL_FUNC_CIPHER_GET_PARAMS:
1519 if (cipher->get_params != NULL)
1521 cipher->get_params = OSSL_FUNC_cipher_get_params(fns);
1523 case OSSL_FUNC_CIPHER_GET_CTX_PARAMS:
1524 if (cipher->get_ctx_params != NULL)
1526 cipher->get_ctx_params = OSSL_FUNC_cipher_get_ctx_params(fns);
1528 case OSSL_FUNC_CIPHER_SET_CTX_PARAMS:
1529 if (cipher->set_ctx_params != NULL)
1531 cipher->set_ctx_params = OSSL_FUNC_cipher_set_ctx_params(fns);
1533 case OSSL_FUNC_CIPHER_GETTABLE_PARAMS:
1534 if (cipher->gettable_params != NULL)
1536 cipher->gettable_params = OSSL_FUNC_cipher_gettable_params(fns);
1538 case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS:
1539 if (cipher->gettable_ctx_params != NULL)
1541 cipher->gettable_ctx_params =
1542 OSSL_FUNC_cipher_gettable_ctx_params(fns);
1544 case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS:
1545 if (cipher->settable_ctx_params != NULL)
1547 cipher->settable_ctx_params =
1548 OSSL_FUNC_cipher_settable_ctx_params(fns);
1552 if ((fnciphcnt != 0 && fnciphcnt != 3 && fnciphcnt != 4)
1553 || (fnciphcnt == 0 && cipher->ccipher == NULL)
1556 * In order to be a consistent set of functions we must have at least
1557 * a complete set of "encrypt" functions, or a complete set of "decrypt"
1558 * functions, or a single "cipher" function. In all cases we need both
1559 * the "newctx" and "freectx" functions.
1561 EVP_CIPHER_free(cipher);
1562 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
1565 cipher->prov = prov;
1567 ossl_provider_up_ref(prov);
1569 if (!evp_cipher_cache_constants(cipher)) {
1570 EVP_CIPHER_free(cipher);
1571 ERR_raise(ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED);
1578 static int evp_cipher_up_ref(void *cipher)
1580 return EVP_CIPHER_up_ref(cipher);
1583 static void evp_cipher_free(void *cipher)
1585 EVP_CIPHER_free(cipher);
1588 EVP_CIPHER *EVP_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
1589 const char *properties)
1591 EVP_CIPHER *cipher =
1592 evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
1593 evp_cipher_from_algorithm, evp_cipher_up_ref,
1599 int EVP_CIPHER_up_ref(EVP_CIPHER *cipher)
1603 CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
1607 void EVP_CIPHER_free(EVP_CIPHER *cipher)
1614 CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
1617 ossl_provider_free(cipher->prov);
1618 CRYPTO_THREAD_lock_free(cipher->lock);
1619 OPENSSL_free(cipher);
1622 void EVP_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
1623 void (*fn)(EVP_CIPHER *mac, void *arg),
1626 evp_generic_do_all(libctx, OSSL_OP_CIPHER,
1627 (void (*)(void *, void *))fn, arg,
1628 evp_cipher_from_algorithm, evp_cipher_free);