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 <openssl/evp.h>
17 #include <openssl/err.h>
18 #include <openssl/rand.h>
19 #include <openssl/engine.h>
20 #include <openssl/params.h>
21 #include <openssl/core_names.h>
22 #include "internal/cryptlib.h"
23 #include "internal/provider.h"
24 #include "internal/core.h"
25 #include "crypto/evp.h"
26 #include "evp_local.h"
28 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx)
33 if (ctx->cipher == NULL || ctx->cipher->prov == NULL)
36 if (ctx->algctx != NULL) {
37 if (ctx->cipher->freectx != NULL)
38 ctx->cipher->freectx(ctx->algctx);
41 if (ctx->fetched_cipher != NULL)
42 EVP_CIPHER_free(ctx->fetched_cipher);
43 memset(ctx, 0, sizeof(*ctx));
47 /* Remove legacy code below when legacy support is removed. */
50 if (ctx->cipher != NULL) {
51 if (ctx->cipher->cleanup && !ctx->cipher->cleanup(ctx))
53 /* Cleanse cipher context data */
54 if (ctx->cipher_data && ctx->cipher->ctx_size)
55 OPENSSL_cleanse(ctx->cipher_data, ctx->cipher->ctx_size);
57 OPENSSL_free(ctx->cipher_data);
58 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
59 ENGINE_finish(ctx->engine);
61 memset(ctx, 0, sizeof(*ctx));
65 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
67 return OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
70 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
74 EVP_CIPHER_CTX_reset(ctx);
78 static int evp_cipher_init_internal(EVP_CIPHER_CTX *ctx,
79 const EVP_CIPHER *cipher,
80 ENGINE *impl, const unsigned char *key,
81 const unsigned char *iv, int enc,
82 const OSSL_PARAM params[])
85 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
86 ENGINE *tmpimpl = NULL;
89 * enc == 1 means we are encrypting.
90 * enc == 0 means we are decrypting.
91 * enc == -1 means, use the previously initialised value for encrypt/decrypt
101 if (cipher == NULL && ctx->cipher == NULL) {
102 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
106 /* Code below to be removed when legacy support is dropped. */
108 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
110 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
111 * this context may already have an ENGINE! Try to avoid releasing the
112 * previous handle, re-querying for an ENGINE, and having a
113 * reinitialisation, when it may all be unnecessary.
115 if (ctx->engine && ctx->cipher
116 && (cipher == NULL || cipher->nid == ctx->cipher->nid))
119 if (cipher != NULL && impl == NULL) {
120 /* Ask if an ENGINE is reserved for this job */
121 tmpimpl = ENGINE_get_cipher_engine(cipher->nid);
126 * If there are engines involved then we should use legacy handling for now.
128 if (ctx->engine != NULL
129 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
133 if (ctx->cipher == ctx->fetched_cipher)
135 EVP_CIPHER_free(ctx->fetched_cipher);
136 ctx->fetched_cipher = NULL;
140 * Ensure a context left lying around from last time is cleared
143 if (cipher != NULL && ctx->cipher != NULL) {
144 OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size);
145 ctx->cipher_data = NULL;
149 /* Start of non-legacy code below */
151 /* Ensure a context left lying around from last time is cleared */
152 if (cipher != NULL && ctx->cipher != NULL) {
153 unsigned long flags = ctx->flags;
155 EVP_CIPHER_CTX_reset(ctx);
156 /* Restore encrypt and flags */
162 cipher = ctx->cipher;
164 if (cipher->prov == NULL) {
166 /* We only do explicit fetches inside the FIPS module */
167 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
170 EVP_CIPHER *provciph =
171 EVP_CIPHER_fetch(NULL,
172 cipher->nid == NID_undef ? "NULL"
173 : OBJ_nid2sn(cipher->nid),
176 if (provciph == NULL)
179 EVP_CIPHER_free(ctx->fetched_cipher);
180 ctx->fetched_cipher = provciph;
184 if (cipher->prov != NULL) {
185 if (!EVP_CIPHER_up_ref((EVP_CIPHER *)cipher)) {
186 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
189 EVP_CIPHER_free(ctx->fetched_cipher);
190 ctx->fetched_cipher = (EVP_CIPHER *)cipher;
192 ctx->cipher = cipher;
193 if (ctx->algctx == NULL) {
194 ctx->algctx = ctx->cipher->newctx(ossl_provider_ctx(cipher->prov));
195 if (ctx->algctx == NULL) {
196 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
201 if ((ctx->flags & EVP_CIPH_NO_PADDING) != 0) {
203 * If this ctx was already set up for no padding then we need to tell
204 * the new cipher about it.
206 if (!EVP_CIPHER_CTX_set_padding(ctx, 0))
211 if (ctx->cipher->einit == NULL) {
212 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
216 return ctx->cipher->einit(ctx->algctx,
219 : EVP_CIPHER_CTX_key_length(ctx),
222 : EVP_CIPHER_CTX_iv_length(ctx),
226 if (ctx->cipher->dinit == NULL) {
227 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
231 return ctx->cipher->dinit(ctx->algctx,
234 : EVP_CIPHER_CTX_key_length(ctx),
237 : EVP_CIPHER_CTX_iv_length(ctx),
240 /* Code below to be removed when legacy support is dropped. */
243 if (cipher != NULL) {
245 * Ensure a context left lying around from last time is cleared (we
246 * previously attempted to avoid this if the same ENGINE and
247 * EVP_CIPHER could be used).
250 unsigned long flags = ctx->flags;
251 EVP_CIPHER_CTX_reset(ctx);
252 /* Restore encrypt and flags */
256 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
258 if (!ENGINE_init(impl)) {
259 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
266 /* There's an ENGINE for this job ... (apparently) */
267 const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid);
271 * One positive side-effect of US's export control history,
272 * is that we should at least be able to avoid using US
273 * misspellings of "initialisation"?
275 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
278 /* We'll use the ENGINE's private cipher definition */
281 * Store the ENGINE functional reference so we know 'cipher' came
282 * from an ENGINE and we need to release it when done.
290 ctx->cipher = cipher;
291 if (ctx->cipher->ctx_size) {
292 ctx->cipher_data = OPENSSL_zalloc(ctx->cipher->ctx_size);
293 if (ctx->cipher_data == NULL) {
295 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
299 ctx->cipher_data = NULL;
301 ctx->key_len = cipher->key_len;
302 /* Preserve wrap enable flag, zero everything else */
303 ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
304 if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
305 if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
307 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
312 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
315 if (ctx->cipher == NULL)
318 /* we assume block size is a power of 2 in *cryptUpdate */
319 OPENSSL_assert(ctx->cipher->block_size == 1
320 || ctx->cipher->block_size == 8
321 || ctx->cipher->block_size == 16);
323 if (!(ctx->flags & EVP_CIPHER_CTX_FLAG_WRAP_ALLOW)
324 && EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_WRAP_MODE) {
325 ERR_raise(ERR_LIB_EVP, EVP_R_WRAP_MODE_NOT_ALLOWED);
329 if ((EVP_CIPHER_flags(EVP_CIPHER_CTX_get0_cipher(ctx))
330 & EVP_CIPH_CUSTOM_IV) == 0) {
331 switch (EVP_CIPHER_CTX_mode(ctx)) {
333 case EVP_CIPH_STREAM_CIPHER:
334 case EVP_CIPH_ECB_MODE:
337 case EVP_CIPH_CFB_MODE:
338 case EVP_CIPH_OFB_MODE:
343 case EVP_CIPH_CBC_MODE:
344 n = EVP_CIPHER_CTX_iv_length(ctx);
345 if (!ossl_assert(n >= 0 && n <= (int)sizeof(ctx->iv)))
348 memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
349 memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
352 case EVP_CIPH_CTR_MODE:
354 /* Don't reuse IV for CTR mode */
356 memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
364 if (key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
365 if (!ctx->cipher->init(ctx, key, iv, enc))
370 ctx->block_mask = ctx->cipher->block_size - 1;
374 int EVP_CipherInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
375 const unsigned char *key, const unsigned char *iv,
376 int enc, const OSSL_PARAM params[])
378 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, params);
381 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
382 const unsigned char *key, const unsigned char *iv, int enc)
385 EVP_CIPHER_CTX_reset(ctx);
386 return evp_cipher_init_internal(ctx, cipher, NULL, key, iv, enc, NULL);
389 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
390 ENGINE *impl, const unsigned char *key,
391 const unsigned char *iv, int enc)
393 return evp_cipher_init_internal(ctx, cipher, impl, key, iv, enc, NULL);
396 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
397 const unsigned char *in, int inl)
400 return EVP_EncryptUpdate(ctx, out, outl, in, inl);
402 return EVP_DecryptUpdate(ctx, out, outl, in, inl);
405 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
408 return EVP_EncryptFinal_ex(ctx, out, outl);
410 return EVP_DecryptFinal_ex(ctx, out, outl);
413 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
416 return EVP_EncryptFinal(ctx, out, outl);
418 return EVP_DecryptFinal(ctx, out, outl);
421 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
422 const unsigned char *key, const unsigned char *iv)
424 return EVP_CipherInit(ctx, cipher, key, iv, 1);
427 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
428 ENGINE *impl, const unsigned char *key,
429 const unsigned char *iv)
431 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 1);
434 int EVP_EncryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
435 const unsigned char *key, const unsigned char *iv,
436 const OSSL_PARAM params[])
438 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 1, params);
441 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
442 const unsigned char *key, const unsigned char *iv)
444 return EVP_CipherInit(ctx, cipher, key, iv, 0);
447 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
448 ENGINE *impl, const unsigned char *key,
449 const unsigned char *iv)
451 return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
454 int EVP_DecryptInit_ex2(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
455 const unsigned char *key, const unsigned char *iv,
456 const OSSL_PARAM params[])
458 return EVP_CipherInit_ex2(ctx, cipher, key, iv, 0, params);
462 * According to the letter of standard difference between pointers
463 * is specified to be valid only within same object. This makes
464 * it formally challenging to determine if input and output buffers
465 * are not partially overlapping with standard pointer arithmetic.
470 #if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE==64
472 * Then we have VMS that distinguishes itself by adhering to
473 * sizeof(size_t)==4 even in 64-bit builds, which means that
474 * difference between two pointers might be truncated to 32 bits.
475 * In the context one can even wonder how comparison for
476 * equality is implemented. To be on the safe side we adhere to
477 * PTRDIFF_T even for comparison for equality.
479 # define PTRDIFF_T uint64_t
481 # define PTRDIFF_T size_t
484 int ossl_is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
486 PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
488 * Check for partially overlapping buffers. [Binary logical
489 * operations are used instead of boolean to minimize number
490 * of conditional branches.]
492 int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
493 (diff > (0 - (PTRDIFF_T)len)));
498 static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX *ctx,
499 unsigned char *out, int *outl,
500 const unsigned char *in, int inl)
502 int i, j, bl, cmpl = inl;
504 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
505 cmpl = (cmpl + 7) / 8;
507 bl = ctx->cipher->block_size;
509 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
510 /* If block size > 1 then the cipher will have to do this check */
511 if (bl == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
512 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
516 i = ctx->cipher->do_cipher(ctx, out, in, inl);
528 if (ossl_is_partially_overlapping(out + ctx->buf_len, in, cmpl)) {
529 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
533 if (ctx->buf_len == 0 && (inl & (ctx->block_mask)) == 0) {
534 if (ctx->cipher->do_cipher(ctx, out, in, inl)) {
543 OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
546 memcpy(&(ctx->buf[i]), in, inl);
554 * Once we've processed the first j bytes from in, the amount of
555 * data left that is a multiple of the block length is:
556 * (inl - j) & ~(bl - 1)
557 * We must ensure that this amount of data, plus the one block that
558 * we process from ctx->buf does not exceed INT_MAX
560 if (((inl - j) & ~(bl - 1)) > INT_MAX - bl) {
561 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
564 memcpy(&(ctx->buf[i]), in, j);
567 if (!ctx->cipher->do_cipher(ctx, out, ctx->buf, bl))
577 if (!ctx->cipher->do_cipher(ctx, out, in, inl))
583 memcpy(ctx->buf, &(in[inl]), i);
589 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
590 const unsigned char *in, int inl)
599 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
603 /* Prevent accidental use of decryption context when encrypting */
605 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
609 if (ctx->cipher == NULL) {
610 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
614 if (ctx->cipher->prov == NULL)
617 blocksize = ctx->cipher->block_size;
619 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
620 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
623 ret = ctx->cipher->cupdate(ctx->algctx, out, &soutl,
624 inl + (blocksize == 1 ? 0 : blocksize), in,
628 if (soutl > INT_MAX) {
629 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
637 /* Code below to be removed when legacy support is dropped. */
640 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
643 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
646 ret = EVP_EncryptFinal_ex(ctx, out, outl);
650 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
653 unsigned int i, b, bl;
660 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
664 /* Prevent accidental use of decryption context when encrypting */
666 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
670 if (ctx->cipher == NULL) {
671 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
674 if (ctx->cipher->prov == NULL)
677 blocksize = EVP_CIPHER_CTX_block_size(ctx);
679 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
680 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
684 ret = ctx->cipher->cfinal(ctx->algctx, out, &soutl,
685 blocksize == 1 ? 0 : blocksize);
688 if (soutl > INT_MAX) {
689 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
697 /* Code below to be removed when legacy support is dropped. */
700 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
701 ret = ctx->cipher->do_cipher(ctx, out, NULL, 0);
709 b = ctx->cipher->block_size;
710 OPENSSL_assert(b <= sizeof(ctx->buf));
716 if (ctx->flags & EVP_CIPH_NO_PADDING) {
718 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
726 for (i = bl; i < b; i++)
728 ret = ctx->cipher->do_cipher(ctx, out, ctx->buf, b);
736 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
737 const unsigned char *in, int inl)
739 int fix_len, cmpl = inl, ret;
747 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
751 /* Prevent accidental use of encryption context when decrypting */
753 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
757 if (ctx->cipher == NULL) {
758 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
761 if (ctx->cipher->prov == NULL)
764 blocksize = EVP_CIPHER_CTX_block_size(ctx);
766 if (ctx->cipher->cupdate == NULL || blocksize < 1) {
767 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
770 ret = ctx->cipher->cupdate(ctx->algctx, out, &soutl,
771 inl + (blocksize == 1 ? 0 : blocksize), in,
775 if (soutl > INT_MAX) {
776 ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR);
784 /* Code below to be removed when legacy support is dropped. */
787 b = ctx->cipher->block_size;
789 if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))
790 cmpl = (cmpl + 7) / 8;
792 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
793 if (b == 1 && ossl_is_partially_overlapping(out, in, cmpl)) {
794 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
798 fix_len = ctx->cipher->do_cipher(ctx, out, in, inl);
812 if (ctx->flags & EVP_CIPH_NO_PADDING)
813 return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);
815 OPENSSL_assert(b <= sizeof(ctx->final));
817 if (ctx->final_used) {
818 /* see comment about PTRDIFF_T comparison above */
819 if (((PTRDIFF_T)out == (PTRDIFF_T)in)
820 || ossl_is_partially_overlapping(out, in, b)) {
821 ERR_raise(ERR_LIB_EVP, EVP_R_PARTIALLY_OVERLAPPING);
825 * final_used is only ever set if buf_len is 0. Therefore the maximum
826 * length output we will ever see from evp_EncryptDecryptUpdate is
827 * the maximum multiple of the block length that is <= inl, or just:
829 * Since final_used has been set then the final output length is:
830 * (inl & ~(b - 1)) + b
831 * This must never exceed INT_MAX
833 if ((inl & ~(b - 1)) > INT_MAX - b) {
834 ERR_raise(ERR_LIB_EVP, EVP_R_OUTPUT_WOULD_OVERFLOW);
837 memcpy(out, ctx->final, b);
843 if (!evp_EncryptDecryptUpdate(ctx, out, outl, in, inl))
847 * if we have 'decrypted' a multiple of block size, make sure we have a
848 * copy of this last block
850 if (b > 1 && !ctx->buf_len) {
853 memcpy(ctx->final, &out[*outl], b);
863 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
866 ret = EVP_DecryptFinal_ex(ctx, out, outl);
870 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
881 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
885 /* Prevent accidental use of encryption context when decrypting */
887 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
891 if (ctx->cipher == NULL) {
892 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
896 if (ctx->cipher->prov == NULL)
899 blocksize = EVP_CIPHER_CTX_block_size(ctx);
901 if (blocksize < 1 || ctx->cipher->cfinal == NULL) {
902 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
906 ret = ctx->cipher->cfinal(ctx->algctx, out, &soutl,
907 blocksize == 1 ? 0 : blocksize);
910 if (soutl > INT_MAX) {
911 ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR);
919 /* Code below to be removed when legacy support is dropped. */
923 if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
924 i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
932 b = ctx->cipher->block_size;
933 if (ctx->flags & EVP_CIPH_NO_PADDING) {
935 ERR_raise(ERR_LIB_EVP, EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH);
942 if (ctx->buf_len || !ctx->final_used) {
943 ERR_raise(ERR_LIB_EVP, EVP_R_WRONG_FINAL_BLOCK_LENGTH);
946 OPENSSL_assert(b <= sizeof(ctx->final));
949 * The following assumes that the ciphertext has been authenticated.
950 * Otherwise it provides a padding oracle.
952 n = ctx->final[b - 1];
953 if (n == 0 || n > (int)b) {
954 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
957 for (i = 0; i < n; i++) {
958 if (ctx->final[--b] != n) {
959 ERR_raise(ERR_LIB_EVP, EVP_R_BAD_DECRYPT);
963 n = ctx->cipher->block_size - n;
964 for (i = 0; i < n; i++)
965 out[i] = ctx->final[i];
972 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
974 if (c->cipher->prov != NULL) {
976 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
979 if (EVP_CIPHER_CTX_key_length(c) == keylen)
982 /* Check the cipher actually understands this parameter */
983 if (OSSL_PARAM_locate_const(EVP_CIPHER_settable_ctx_params(c->cipher),
984 OSSL_CIPHER_PARAM_KEYLEN) == NULL)
987 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &len);
988 ok = evp_do_ciph_ctx_setparams(c->cipher, c->algctx, params);
990 return ok > 0 ? 1 : 0;
993 /* Code below to be removed when legacy support is dropped. */
996 * Note there have never been any built-in ciphers that define this flag
997 * since it was first introduced.
999 if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
1000 return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL);
1001 if (EVP_CIPHER_CTX_key_length(c) == keylen)
1003 if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) {
1004 c->key_len = keylen;
1007 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_KEY_LENGTH);
1011 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad)
1014 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1015 unsigned int pd = pad;
1018 ctx->flags &= ~EVP_CIPH_NO_PADDING;
1020 ctx->flags |= EVP_CIPH_NO_PADDING;
1022 if (ctx->cipher != NULL && ctx->cipher->prov == NULL)
1024 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING, &pd);
1025 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1030 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
1032 int ret = EVP_CTRL_RET_UNSUPPORTED;
1036 OSSL_PARAM params[4] = {
1037 OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END, OSSL_PARAM_END
1040 if (ctx == NULL || ctx->cipher == NULL) {
1041 ERR_raise(ERR_LIB_EVP, EVP_R_NO_CIPHER_SET);
1045 if (ctx->cipher->prov == NULL)
1049 case EVP_CTRL_SET_KEY_LENGTH:
1050 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &sz);
1052 case EVP_CTRL_RAND_KEY: /* Used by DES */
1055 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY,
1061 * EVP_CTRL_INIT is purely legacy, no provider counterpart.
1062 * As a matter of fact, this should be dead code, but some caller
1063 * might still do a direct control call with this command, so...
1064 * Legacy methods return 1 except for exceptional circumstances, so
1065 * we do the same here to not be disruptive.
1068 case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS: /* Used by DASYNC */
1071 case EVP_CTRL_AEAD_SET_IVLEN:
1074 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
1076 case EVP_CTRL_CCM_SET_L:
1077 if (arg < 2 || arg > 8)
1080 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &sz);
1082 case EVP_CTRL_AEAD_SET_IV_FIXED:
1083 params[0] = OSSL_PARAM_construct_octet_string(
1084 OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED, ptr, sz);
1086 case EVP_CTRL_GCM_IV_GEN:
1089 sz = 0; /* special case that uses the iv length */
1090 params[0] = OSSL_PARAM_construct_octet_string(
1091 OSSL_CIPHER_PARAM_AEAD_TLS1_GET_IV_GEN, ptr, sz);
1093 case EVP_CTRL_GCM_SET_IV_INV:
1096 params[0] = OSSL_PARAM_construct_octet_string(
1097 OSSL_CIPHER_PARAM_AEAD_TLS1_SET_IV_INV, ptr, sz);
1099 case EVP_CTRL_GET_RC5_ROUNDS:
1100 set_params = 0; /* Fall thru */
1101 case EVP_CTRL_SET_RC5_ROUNDS:
1104 i = (unsigned int)arg;
1105 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_ROUNDS, &i);
1107 case EVP_CTRL_SET_SPEED:
1110 i = (unsigned int)arg;
1111 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_SPEED, &i);
1113 case EVP_CTRL_AEAD_GET_TAG:
1114 set_params = 0; /* Fall thru */
1115 case EVP_CTRL_AEAD_SET_TAG:
1116 params[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG,
1119 case EVP_CTRL_AEAD_TLS1_AAD:
1120 /* This one does a set and a get - since it returns a size */
1122 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD,
1124 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1128 OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, &sz);
1129 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
1133 #ifndef OPENSSL_NO_RC2
1134 case EVP_CTRL_GET_RC2_KEY_BITS:
1135 set_params = 0; /* Fall thru */
1136 case EVP_CTRL_SET_RC2_KEY_BITS:
1137 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, &sz);
1139 #endif /* OPENSSL_NO_RC2 */
1140 #if !defined(OPENSSL_NO_MULTIBLOCK)
1141 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
1142 params[0] = OSSL_PARAM_construct_size_t(
1143 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT, &sz);
1144 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1148 params[0] = OSSL_PARAM_construct_size_t(
1149 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE, &sz);
1150 params[1] = OSSL_PARAM_construct_end();
1151 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
1155 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD: {
1156 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1157 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1159 if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
1162 params[0] = OSSL_PARAM_construct_octet_string(
1163 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD, (void*)p->inp, p->len);
1164 params[1] = OSSL_PARAM_construct_uint(
1165 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1166 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1169 /* Retrieve the return values changed by the set */
1170 params[0] = OSSL_PARAM_construct_size_t(
1171 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN, &sz);
1172 params[1] = OSSL_PARAM_construct_uint(
1173 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1174 params[2] = OSSL_PARAM_construct_end();
1175 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
1180 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT: {
1181 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *p =
1182 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *)ptr;
1184 params[0] = OSSL_PARAM_construct_octet_string(
1185 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC, p->out, p->len);
1187 params[1] = OSSL_PARAM_construct_octet_string(
1188 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN, (void*)p->inp,
1190 params[2] = OSSL_PARAM_construct_uint(
1191 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE, &p->interleave);
1192 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1195 params[0] = OSSL_PARAM_construct_size_t(
1196 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN, &sz);
1197 params[1] = OSSL_PARAM_construct_end();
1198 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
1203 #endif /* OPENSSL_NO_MULTIBLOCK */
1204 case EVP_CTRL_AEAD_SET_MAC_KEY:
1207 params[0] = OSSL_PARAM_construct_octet_string(
1208 OSSL_CIPHER_PARAM_AEAD_MAC_KEY, ptr, sz);
1213 ret = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
1215 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
1218 /* Code below to be removed when legacy support is dropped. */
1220 if (ctx->cipher->ctrl == NULL) {
1221 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
1225 ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
1228 if (ret == EVP_CTRL_RET_UNSUPPORTED) {
1229 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
1235 int EVP_CIPHER_get_params(EVP_CIPHER *cipher, OSSL_PARAM params[])
1237 if (cipher != NULL && cipher->get_params != NULL)
1238 return cipher->get_params(params);
1242 int EVP_CIPHER_CTX_set_params(EVP_CIPHER_CTX *ctx, const OSSL_PARAM params[])
1244 if (ctx->cipher != NULL && ctx->cipher->set_ctx_params != NULL)
1245 return ctx->cipher->set_ctx_params(ctx->algctx, params);
1249 int EVP_CIPHER_CTX_get_params(EVP_CIPHER_CTX *ctx, OSSL_PARAM params[])
1251 if (ctx->cipher != NULL && ctx->cipher->get_ctx_params != NULL)
1252 return ctx->cipher->get_ctx_params(ctx->algctx, params);
1256 const OSSL_PARAM *EVP_CIPHER_gettable_params(const EVP_CIPHER *cipher)
1258 if (cipher != NULL && cipher->gettable_params != NULL)
1259 return cipher->gettable_params(
1260 ossl_provider_ctx(EVP_CIPHER_provider(cipher)));
1264 const OSSL_PARAM *EVP_CIPHER_settable_ctx_params(const EVP_CIPHER *cipher)
1268 if (cipher != NULL && cipher->settable_ctx_params != NULL) {
1269 provctx = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1270 return cipher->settable_ctx_params(NULL, provctx);
1275 const OSSL_PARAM *EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER *cipher)
1279 if (cipher != NULL && cipher->gettable_ctx_params != NULL) {
1280 provctx = ossl_provider_ctx(EVP_CIPHER_provider(cipher));
1281 return cipher->gettable_ctx_params(NULL, provctx);
1286 const OSSL_PARAM *EVP_CIPHER_CTX_settable_params(EVP_CIPHER_CTX *cctx)
1290 if (cctx != NULL && cctx->cipher->settable_ctx_params != NULL) {
1291 alg = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1292 return cctx->cipher->settable_ctx_params(cctx->algctx, alg);
1297 const OSSL_PARAM *EVP_CIPHER_CTX_gettable_params(EVP_CIPHER_CTX *cctx)
1301 if (cctx != NULL && cctx->cipher->gettable_ctx_params != NULL) {
1302 provctx = ossl_provider_ctx(EVP_CIPHER_provider(cctx->cipher));
1303 return cctx->cipher->gettable_ctx_params(cctx->algctx, provctx);
1309 static OSSL_LIB_CTX *EVP_CIPHER_CTX_get_libctx(EVP_CIPHER_CTX *ctx)
1311 const EVP_CIPHER *cipher = ctx->cipher;
1312 const OSSL_PROVIDER *prov;
1317 prov = EVP_CIPHER_provider(cipher);
1318 return ossl_provider_libctx(prov);
1322 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key)
1324 if (ctx->cipher->flags & EVP_CIPH_RAND_KEY)
1325 return EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_RAND_KEY, 0, key);
1332 OSSL_LIB_CTX *libctx = EVP_CIPHER_CTX_get_libctx(ctx);
1334 kl = EVP_CIPHER_CTX_key_length(ctx);
1335 if (kl <= 0 || RAND_priv_bytes_ex(libctx, key, kl, 0) <= 0)
1339 #endif /* FIPS_MODULE */
1342 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
1344 if ((in == NULL) || (in->cipher == NULL)) {
1345 ERR_raise(ERR_LIB_EVP, EVP_R_INPUT_NOT_INITIALIZED);
1349 if (in->cipher->prov == NULL)
1352 if (in->cipher->dupctx == NULL) {
1353 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1357 EVP_CIPHER_CTX_reset(out);
1362 if (in->fetched_cipher != NULL && !EVP_CIPHER_up_ref(in->fetched_cipher)) {
1363 out->fetched_cipher = NULL;
1367 out->algctx = in->cipher->dupctx(in->algctx);
1368 if (out->algctx == NULL) {
1369 ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX);
1375 /* Code below to be removed when legacy support is dropped. */
1378 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
1379 /* Make sure it's safe to copy a cipher context using an ENGINE */
1380 if (in->engine && !ENGINE_init(in->engine)) {
1381 ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
1386 EVP_CIPHER_CTX_reset(out);
1387 memcpy(out, in, sizeof(*out));
1389 if (in->cipher_data && in->cipher->ctx_size) {
1390 out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
1391 if (out->cipher_data == NULL) {
1393 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1396 memcpy(out->cipher_data, in->cipher_data, in->cipher->ctx_size);
1399 if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
1400 if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
1402 ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
1408 EVP_CIPHER *evp_cipher_new(void)
1410 EVP_CIPHER *cipher = OPENSSL_zalloc(sizeof(EVP_CIPHER));
1412 if (cipher != NULL) {
1413 cipher->lock = CRYPTO_THREAD_lock_new();
1414 if (cipher->lock == NULL) {
1415 OPENSSL_free(cipher);
1424 * FIPS module note: since internal fetches will be entirely
1425 * provider based, we know that none of its code depends on legacy
1426 * NIDs or any functionality that use them.
1429 /* After removal of legacy support get rid of the need for legacy NIDs */
1430 static void set_legacy_nid(const char *name, void *vlegacy_nid)
1433 int *legacy_nid = vlegacy_nid;
1435 * We use lowest level function to get the associated method, because
1436 * higher level functions such as EVP_get_cipherbyname() have changed
1437 * to look at providers too.
1439 const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_CIPHER_METH);
1441 if (*legacy_nid == -1) /* We found a clash already */
1443 if (legacy_method == NULL)
1445 nid = EVP_CIPHER_nid(legacy_method);
1446 if (*legacy_nid != NID_undef && *legacy_nid != nid) {
1454 static void *evp_cipher_from_algorithm(const int name_id,
1455 const OSSL_ALGORITHM *algodef,
1456 OSSL_PROVIDER *prov)
1458 const OSSL_DISPATCH *fns = algodef->implementation;
1459 EVP_CIPHER *cipher = NULL;
1460 int fnciphcnt = 0, fnctxcnt = 0;
1462 if ((cipher = evp_cipher_new()) == NULL) {
1463 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1468 cipher->nid = NID_undef;
1469 if (!evp_names_do_all(prov, name_id, set_legacy_nid, &cipher->nid)
1470 || cipher->nid == -1) {
1471 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
1472 EVP_CIPHER_free(cipher);
1477 cipher->name_id = name_id;
1478 if ((cipher->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) {
1479 EVP_CIPHER_free(cipher);
1482 cipher->description = algodef->algorithm_description;
1484 for (; fns->function_id != 0; fns++) {
1485 switch (fns->function_id) {
1486 case OSSL_FUNC_CIPHER_NEWCTX:
1487 if (cipher->newctx != NULL)
1489 cipher->newctx = OSSL_FUNC_cipher_newctx(fns);
1492 case OSSL_FUNC_CIPHER_ENCRYPT_INIT:
1493 if (cipher->einit != NULL)
1495 cipher->einit = OSSL_FUNC_cipher_encrypt_init(fns);
1498 case OSSL_FUNC_CIPHER_DECRYPT_INIT:
1499 if (cipher->dinit != NULL)
1501 cipher->dinit = OSSL_FUNC_cipher_decrypt_init(fns);
1504 case OSSL_FUNC_CIPHER_UPDATE:
1505 if (cipher->cupdate != NULL)
1507 cipher->cupdate = OSSL_FUNC_cipher_update(fns);
1510 case OSSL_FUNC_CIPHER_FINAL:
1511 if (cipher->cfinal != NULL)
1513 cipher->cfinal = OSSL_FUNC_cipher_final(fns);
1516 case OSSL_FUNC_CIPHER_CIPHER:
1517 if (cipher->ccipher != NULL)
1519 cipher->ccipher = OSSL_FUNC_cipher_cipher(fns);
1521 case OSSL_FUNC_CIPHER_FREECTX:
1522 if (cipher->freectx != NULL)
1524 cipher->freectx = OSSL_FUNC_cipher_freectx(fns);
1527 case OSSL_FUNC_CIPHER_DUPCTX:
1528 if (cipher->dupctx != NULL)
1530 cipher->dupctx = OSSL_FUNC_cipher_dupctx(fns);
1532 case OSSL_FUNC_CIPHER_GET_PARAMS:
1533 if (cipher->get_params != NULL)
1535 cipher->get_params = OSSL_FUNC_cipher_get_params(fns);
1537 case OSSL_FUNC_CIPHER_GET_CTX_PARAMS:
1538 if (cipher->get_ctx_params != NULL)
1540 cipher->get_ctx_params = OSSL_FUNC_cipher_get_ctx_params(fns);
1542 case OSSL_FUNC_CIPHER_SET_CTX_PARAMS:
1543 if (cipher->set_ctx_params != NULL)
1545 cipher->set_ctx_params = OSSL_FUNC_cipher_set_ctx_params(fns);
1547 case OSSL_FUNC_CIPHER_GETTABLE_PARAMS:
1548 if (cipher->gettable_params != NULL)
1550 cipher->gettable_params = OSSL_FUNC_cipher_gettable_params(fns);
1552 case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS:
1553 if (cipher->gettable_ctx_params != NULL)
1555 cipher->gettable_ctx_params =
1556 OSSL_FUNC_cipher_gettable_ctx_params(fns);
1558 case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS:
1559 if (cipher->settable_ctx_params != NULL)
1561 cipher->settable_ctx_params =
1562 OSSL_FUNC_cipher_settable_ctx_params(fns);
1566 if ((fnciphcnt != 0 && fnciphcnt != 3 && fnciphcnt != 4)
1567 || (fnciphcnt == 0 && cipher->ccipher == NULL)
1570 * In order to be a consistent set of functions we must have at least
1571 * a complete set of "encrypt" functions, or a complete set of "decrypt"
1572 * functions, or a single "cipher" function. In all cases we need both
1573 * the "newctx" and "freectx" functions.
1575 EVP_CIPHER_free(cipher);
1576 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
1579 cipher->prov = prov;
1581 ossl_provider_up_ref(prov);
1583 if (!evp_cipher_cache_constants(cipher)) {
1584 EVP_CIPHER_free(cipher);
1585 ERR_raise(ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED);
1592 static int evp_cipher_up_ref(void *cipher)
1594 return EVP_CIPHER_up_ref(cipher);
1597 static void evp_cipher_free(void *cipher)
1599 EVP_CIPHER_free(cipher);
1602 EVP_CIPHER *EVP_CIPHER_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
1603 const char *properties)
1605 EVP_CIPHER *cipher =
1606 evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties,
1607 evp_cipher_from_algorithm, evp_cipher_up_ref,
1613 int EVP_CIPHER_up_ref(EVP_CIPHER *cipher)
1617 if (cipher->origin == EVP_ORIG_DYNAMIC)
1618 CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock);
1622 void evp_cipher_free_int(EVP_CIPHER *cipher)
1624 OPENSSL_free(cipher->type_name);
1625 ossl_provider_free(cipher->prov);
1626 CRYPTO_THREAD_lock_free(cipher->lock);
1627 OPENSSL_free(cipher);
1630 void EVP_CIPHER_free(EVP_CIPHER *cipher)
1634 if (cipher == NULL || cipher->origin != EVP_ORIG_DYNAMIC)
1637 CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock);
1640 evp_cipher_free_int(cipher);
1643 void EVP_CIPHER_do_all_provided(OSSL_LIB_CTX *libctx,
1644 void (*fn)(EVP_CIPHER *mac, void *arg),
1647 evp_generic_do_all(libctx, OSSL_OP_CIPHER,
1648 (void (*)(void *, void *))fn, arg,
1649 evp_cipher_from_algorithm, evp_cipher_free);