2 * Copyright 1995-2019 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
12 #include "internal/cryptlib.h"
13 #include <openssl/evp.h>
14 #include <openssl/err.h>
15 #include <openssl/rand.h>
16 #include <openssl/rand_drbg.h>
17 #include <openssl/engine.h>
18 #include <openssl/params.h>
19 #include <openssl/core_names.h>
20 #include "crypto/evp.h"
21 #include "internal/provider.h"
22 #include "evp_local.h"
24 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX
*ctx
)
29 if (ctx
->cipher
== NULL
|| ctx
->cipher
->prov
== NULL
)
32 if (ctx
->provctx
!= NULL
) {
33 if (ctx
->cipher
->freectx
!= NULL
)
34 ctx
->cipher
->freectx(ctx
->provctx
);
37 if (ctx
->fetched_cipher
!= NULL
)
38 EVP_CIPHER_free(ctx
->fetched_cipher
);
39 memset(ctx
, 0, sizeof(*ctx
));
43 /* TODO(3.0): Remove legacy code below */
46 if (ctx
->cipher
!= NULL
) {
47 if (ctx
->cipher
->cleanup
&& !ctx
->cipher
->cleanup(ctx
))
49 /* Cleanse cipher context data */
50 if (ctx
->cipher_data
&& ctx
->cipher
->ctx_size
)
51 OPENSSL_cleanse(ctx
->cipher_data
, ctx
->cipher
->ctx_size
);
53 OPENSSL_free(ctx
->cipher_data
);
54 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
55 ENGINE_finish(ctx
->engine
);
57 memset(ctx
, 0, sizeof(*ctx
));
61 EVP_CIPHER_CTX
*EVP_CIPHER_CTX_new(void)
63 return OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX
));
66 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX
*ctx
)
68 EVP_CIPHER_CTX_reset(ctx
);
72 int EVP_CipherInit(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
73 const unsigned char *key
, const unsigned char *iv
, int enc
)
76 EVP_CIPHER_CTX_reset(ctx
);
77 return EVP_CipherInit_ex(ctx
, cipher
, NULL
, key
, iv
, enc
);
80 int EVP_CipherInit_ex(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
81 ENGINE
*impl
, const unsigned char *key
,
82 const unsigned char *iv
, int enc
)
84 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
85 ENGINE
*tmpimpl
= NULL
;
87 const EVP_CIPHER
*tmpcipher
;
90 * enc == 1 means we are encrypting.
91 * enc == 0 means we are decrypting.
92 * enc == -1 means, use the previously initialised value for encrypt/decrypt
102 if (cipher
== NULL
&& ctx
->cipher
== NULL
) {
103 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_NO_CIPHER_SET
);
107 /* TODO(3.0): Legacy work around code below. Remove this */
109 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
111 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
112 * this context may already have an ENGINE! Try to avoid releasing the
113 * previous handle, re-querying for an ENGINE, and having a
114 * reinitialisation, when it may all be unnecessary.
116 if (ctx
->engine
&& ctx
->cipher
117 && (cipher
== NULL
|| cipher
->nid
== ctx
->cipher
->nid
))
120 if (cipher
!= NULL
&& impl
== NULL
) {
121 /* Ask if an ENGINE is reserved for this job */
122 tmpimpl
= ENGINE_get_cipher_engine(cipher
->nid
);
127 * If there are engines involved then we should use legacy handling for now.
129 if (ctx
->engine
!= NULL
130 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
134 if (ctx
->cipher
== ctx
->fetched_cipher
)
136 EVP_CIPHER_free(ctx
->fetched_cipher
);
137 ctx
->fetched_cipher
= NULL
;
141 tmpcipher
= (cipher
== NULL
) ? ctx
->cipher
: cipher
;
143 if (tmpcipher
->prov
== NULL
) {
144 switch(tmpcipher
->nid
) {
145 case NID_aes_256_ecb
:
146 case NID_aes_192_ecb
:
147 case NID_aes_128_ecb
:
148 case NID_aes_256_cbc
:
149 case NID_aes_192_cbc
:
150 case NID_aes_128_cbc
:
151 case NID_aes_256_ofb128
:
152 case NID_aes_192_ofb128
:
153 case NID_aes_128_ofb128
:
154 case NID_aes_256_cfb128
:
155 case NID_aes_192_cfb128
:
156 case NID_aes_128_cfb128
:
157 case NID_aes_256_cfb1
:
158 case NID_aes_192_cfb1
:
159 case NID_aes_128_cfb1
:
160 case NID_aes_256_cfb8
:
161 case NID_aes_192_cfb8
:
162 case NID_aes_128_cfb8
:
163 case NID_aes_256_ctr
:
164 case NID_aes_192_ctr
:
165 case NID_aes_128_ctr
:
166 case NID_aes_128_xts
:
167 case NID_aes_256_xts
:
168 case NID_aes_256_ocb
:
169 case NID_aes_192_ocb
:
170 case NID_aes_128_ocb
:
171 case NID_aes_256_gcm
:
172 case NID_aes_192_gcm
:
173 case NID_aes_128_gcm
:
174 case NID_aes_256_siv
:
175 case NID_aes_192_siv
:
176 case NID_aes_128_siv
:
177 case NID_aes_256_cbc_hmac_sha256
:
178 case NID_aes_128_cbc_hmac_sha256
:
179 case NID_aes_256_cbc_hmac_sha1
:
180 case NID_aes_128_cbc_hmac_sha1
:
181 case NID_id_aes256_wrap
:
182 case NID_id_aes256_wrap_pad
:
183 case NID_id_aes192_wrap
:
184 case NID_id_aes192_wrap_pad
:
185 case NID_id_aes128_wrap
:
186 case NID_id_aes128_wrap_pad
:
187 case NID_aria_256_gcm
:
188 case NID_aria_192_gcm
:
189 case NID_aria_128_gcm
:
190 case NID_aes_256_ccm
:
191 case NID_aes_192_ccm
:
192 case NID_aes_128_ccm
:
193 case NID_aria_256_ccm
:
194 case NID_aria_192_ccm
:
195 case NID_aria_128_ccm
:
196 case NID_aria_256_ecb
:
197 case NID_aria_192_ecb
:
198 case NID_aria_128_ecb
:
199 case NID_aria_256_cbc
:
200 case NID_aria_192_cbc
:
201 case NID_aria_128_cbc
:
202 case NID_aria_256_ofb128
:
203 case NID_aria_192_ofb128
:
204 case NID_aria_128_ofb128
:
205 case NID_aria_256_cfb128
:
206 case NID_aria_192_cfb128
:
207 case NID_aria_128_cfb128
:
208 case NID_aria_256_cfb1
:
209 case NID_aria_192_cfb1
:
210 case NID_aria_128_cfb1
:
211 case NID_aria_256_cfb8
:
212 case NID_aria_192_cfb8
:
213 case NID_aria_128_cfb8
:
214 case NID_aria_256_ctr
:
215 case NID_aria_192_ctr
:
216 case NID_aria_128_ctr
:
217 case NID_camellia_256_ecb
:
218 case NID_camellia_192_ecb
:
219 case NID_camellia_128_ecb
:
220 case NID_camellia_256_cbc
:
221 case NID_camellia_192_cbc
:
222 case NID_camellia_128_cbc
:
223 case NID_camellia_256_ofb128
:
224 case NID_camellia_192_ofb128
:
225 case NID_camellia_128_ofb128
:
226 case NID_camellia_256_cfb128
:
227 case NID_camellia_192_cfb128
:
228 case NID_camellia_128_cfb128
:
229 case NID_camellia_256_cfb1
:
230 case NID_camellia_192_cfb1
:
231 case NID_camellia_128_cfb1
:
232 case NID_camellia_256_cfb8
:
233 case NID_camellia_192_cfb8
:
234 case NID_camellia_128_cfb8
:
235 case NID_camellia_256_ctr
:
236 case NID_camellia_192_ctr
:
237 case NID_camellia_128_ctr
:
238 case NID_des_ede3_cbc
:
239 case NID_des_ede3_ecb
:
240 case NID_des_ede3_ofb64
:
241 case NID_des_ede3_cfb64
:
242 case NID_des_ede3_cfb8
:
243 case NID_des_ede3_cfb1
:
244 case NID_des_ede_cbc
:
245 case NID_des_ede_ecb
:
246 case NID_des_ede_ofb64
:
247 case NID_des_ede_cfb64
:
255 case NID_id_smime_alg_CMS3DESwrap
:
266 case NID_cast5_cfb64
:
267 case NID_cast5_ofb64
:
270 case NID_seed_cfb128
:
271 case NID_seed_ofb128
:
289 case NID_chacha20_poly1305
:
290 case NID_rc4_hmac_md5
:
298 * Ensure a context left lying around from last time is cleared
301 if (cipher
!= NULL
&& ctx
->cipher
!= NULL
) {
302 OPENSSL_clear_free(ctx
->cipher_data
, ctx
->cipher
->ctx_size
);
303 ctx
->cipher_data
= NULL
;
307 /* TODO(3.0): Start of non-legacy code below */
309 /* Ensure a context left lying around from last time is cleared */
310 if (cipher
!= NULL
&& ctx
->cipher
!= NULL
) {
311 unsigned long flags
= ctx
->flags
;
313 EVP_CIPHER_CTX_reset(ctx
);
314 /* Restore encrypt and flags */
320 cipher
= ctx
->cipher
;
322 if (cipher
->prov
== NULL
) {
324 /* We only do explicit fetches inside the FIPS module */
325 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
328 EVP_CIPHER
*provciph
=
329 EVP_CIPHER_fetch(NULL
, OBJ_nid2sn(cipher
->nid
), "");
331 if (provciph
== NULL
) {
332 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
336 EVP_CIPHER_free(ctx
->fetched_cipher
);
337 ctx
->fetched_cipher
= provciph
;
341 ctx
->cipher
= cipher
;
342 if (ctx
->provctx
== NULL
) {
343 ctx
->provctx
= ctx
->cipher
->newctx(ossl_provider_ctx(cipher
->prov
));
344 if (ctx
->provctx
== NULL
) {
345 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
350 if ((ctx
->flags
& EVP_CIPH_NO_PADDING
) != 0) {
352 * If this ctx was already set up for no padding then we need to tell
353 * the new cipher about it.
355 if (!EVP_CIPHER_CTX_set_padding(ctx
, 0))
360 if (ctx
->cipher
->einit
== NULL
) {
361 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
365 return ctx
->cipher
->einit(ctx
->provctx
,
368 : EVP_CIPHER_CTX_key_length(ctx
),
371 : EVP_CIPHER_CTX_iv_length(ctx
));
374 if (ctx
->cipher
->dinit
== NULL
) {
375 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
379 return ctx
->cipher
->dinit(ctx
->provctx
,
382 : EVP_CIPHER_CTX_key_length(ctx
),
385 : EVP_CIPHER_CTX_iv_length(ctx
));
387 /* TODO(3.0): Remove legacy code below */
390 if (cipher
!= NULL
) {
392 * Ensure a context left lying around from last time is cleared (we
393 * previously attempted to avoid this if the same ENGINE and
394 * EVP_CIPHER could be used).
397 unsigned long flags
= ctx
->flags
;
398 EVP_CIPHER_CTX_reset(ctx
);
399 /* Restore encrypt and flags */
403 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
405 if (!ENGINE_init(impl
)) {
406 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
413 /* There's an ENGINE for this job ... (apparently) */
414 const EVP_CIPHER
*c
= ENGINE_get_cipher(impl
, cipher
->nid
);
418 * One positive side-effect of US's export control history,
419 * is that we should at least be able to avoid using US
420 * misspellings of "initialisation"?
422 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
425 /* We'll use the ENGINE's private cipher definition */
428 * Store the ENGINE functional reference so we know 'cipher' came
429 * from an ENGINE and we need to release it when done.
437 ctx
->cipher
= cipher
;
438 if (ctx
->cipher
->ctx_size
) {
439 ctx
->cipher_data
= OPENSSL_zalloc(ctx
->cipher
->ctx_size
);
440 if (ctx
->cipher_data
== NULL
) {
442 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, ERR_R_MALLOC_FAILURE
);
446 ctx
->cipher_data
= NULL
;
448 ctx
->key_len
= cipher
->key_len
;
449 /* Preserve wrap enable flag, zero everything else */
450 ctx
->flags
&= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW
;
451 if (ctx
->cipher
->flags
& EVP_CIPH_CTRL_INIT
) {
452 if (!EVP_CIPHER_CTX_ctrl(ctx
, EVP_CTRL_INIT
, 0, NULL
)) {
454 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_INITIALIZATION_ERROR
);
459 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
462 if (ctx
->cipher
== NULL
)
465 /* we assume block size is a power of 2 in *cryptUpdate */
466 OPENSSL_assert(ctx
->cipher
->block_size
== 1
467 || ctx
->cipher
->block_size
== 8
468 || ctx
->cipher
->block_size
== 16);
470 if (!(ctx
->flags
& EVP_CIPHER_CTX_FLAG_WRAP_ALLOW
)
471 && EVP_CIPHER_CTX_mode(ctx
) == EVP_CIPH_WRAP_MODE
) {
472 EVPerr(EVP_F_EVP_CIPHERINIT_EX
, EVP_R_WRAP_MODE_NOT_ALLOWED
);
476 if (!(EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx
)) & EVP_CIPH_CUSTOM_IV
)) {
477 switch (EVP_CIPHER_CTX_mode(ctx
)) {
479 case EVP_CIPH_STREAM_CIPHER
:
480 case EVP_CIPH_ECB_MODE
:
483 case EVP_CIPH_CFB_MODE
:
484 case EVP_CIPH_OFB_MODE
:
489 case EVP_CIPH_CBC_MODE
:
491 OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx
) <=
492 (int)sizeof(ctx
->iv
));
494 memcpy(ctx
->oiv
, iv
, EVP_CIPHER_CTX_iv_length(ctx
));
495 memcpy(ctx
->iv
, ctx
->oiv
, EVP_CIPHER_CTX_iv_length(ctx
));
498 case EVP_CIPH_CTR_MODE
:
500 /* Don't reuse IV for CTR mode */
502 memcpy(ctx
->iv
, iv
, EVP_CIPHER_CTX_iv_length(ctx
));
510 if (key
|| (ctx
->cipher
->flags
& EVP_CIPH_ALWAYS_CALL_INIT
)) {
511 if (!ctx
->cipher
->init(ctx
, key
, iv
, enc
))
516 ctx
->block_mask
= ctx
->cipher
->block_size
- 1;
520 int EVP_CipherUpdate(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
,
521 const unsigned char *in
, int inl
)
524 return EVP_EncryptUpdate(ctx
, out
, outl
, in
, inl
);
526 return EVP_DecryptUpdate(ctx
, out
, outl
, in
, inl
);
529 int EVP_CipherFinal_ex(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
532 return EVP_EncryptFinal_ex(ctx
, out
, outl
);
534 return EVP_DecryptFinal_ex(ctx
, out
, outl
);
537 int EVP_CipherFinal(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
540 return EVP_EncryptFinal(ctx
, out
, outl
);
542 return EVP_DecryptFinal(ctx
, out
, outl
);
545 int EVP_EncryptInit(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
546 const unsigned char *key
, const unsigned char *iv
)
548 return EVP_CipherInit(ctx
, cipher
, key
, iv
, 1);
551 int EVP_EncryptInit_ex(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
552 ENGINE
*impl
, const unsigned char *key
,
553 const unsigned char *iv
)
555 return EVP_CipherInit_ex(ctx
, cipher
, impl
, key
, iv
, 1);
558 int EVP_DecryptInit(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
559 const unsigned char *key
, const unsigned char *iv
)
561 return EVP_CipherInit(ctx
, cipher
, key
, iv
, 0);
564 int EVP_DecryptInit_ex(EVP_CIPHER_CTX
*ctx
, const EVP_CIPHER
*cipher
,
565 ENGINE
*impl
, const unsigned char *key
,
566 const unsigned char *iv
)
568 return EVP_CipherInit_ex(ctx
, cipher
, impl
, key
, iv
, 0);
572 * According to the letter of standard difference between pointers
573 * is specified to be valid only within same object. This makes
574 * it formally challenging to determine if input and output buffers
575 * are not partially overlapping with standard pointer arithmetic.
580 #if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE==64
582 * Then we have VMS that distinguishes itself by adhering to
583 * sizeof(size_t)==4 even in 64-bit builds, which means that
584 * difference between two pointers might be truncated to 32 bits.
585 * In the context one can even wonder how comparison for
586 * equality is implemented. To be on the safe side we adhere to
587 * PTRDIFF_T even for comparison for equality.
589 # define PTRDIFF_T uint64_t
591 # define PTRDIFF_T size_t
594 int is_partially_overlapping(const void *ptr1
, const void *ptr2
, int len
)
596 PTRDIFF_T diff
= (PTRDIFF_T
)ptr1
-(PTRDIFF_T
)ptr2
;
598 * Check for partially overlapping buffers. [Binary logical
599 * operations are used instead of boolean to minimize number
600 * of conditional branches.]
602 int overlapped
= (len
> 0) & (diff
!= 0) & ((diff
< (PTRDIFF_T
)len
) |
603 (diff
> (0 - (PTRDIFF_T
)len
)));
608 static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX
*ctx
,
609 unsigned char *out
, int *outl
,
610 const unsigned char *in
, int inl
)
612 int i
, j
, bl
, cmpl
= inl
;
614 if (EVP_CIPHER_CTX_test_flags(ctx
, EVP_CIPH_FLAG_LENGTH_BITS
))
615 cmpl
= (cmpl
+ 7) / 8;
617 bl
= ctx
->cipher
->block_size
;
619 if (ctx
->cipher
->flags
& EVP_CIPH_FLAG_CUSTOM_CIPHER
) {
620 /* If block size > 1 then the cipher will have to do this check */
621 if (bl
== 1 && is_partially_overlapping(out
, in
, cmpl
)) {
622 EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE
, EVP_R_PARTIALLY_OVERLAPPING
);
626 i
= ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
);
638 if (is_partially_overlapping(out
+ ctx
->buf_len
, in
, cmpl
)) {
639 EVPerr(EVP_F_EVP_ENCRYPTDECRYPTUPDATE
, EVP_R_PARTIALLY_OVERLAPPING
);
643 if (ctx
->buf_len
== 0 && (inl
& (ctx
->block_mask
)) == 0) {
644 if (ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
)) {
653 OPENSSL_assert(bl
<= (int)sizeof(ctx
->buf
));
656 memcpy(&(ctx
->buf
[i
]), in
, inl
);
662 memcpy(&(ctx
->buf
[i
]), in
, j
);
665 if (!ctx
->cipher
->do_cipher(ctx
, out
, ctx
->buf
, bl
))
675 if (!ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
))
681 memcpy(ctx
->buf
, &(in
[inl
]), i
);
687 int EVP_EncryptUpdate(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
,
688 const unsigned char *in
, int inl
)
694 /* Prevent accidental use of decryption context when encrypting */
696 EVPerr(EVP_F_EVP_ENCRYPTUPDATE
, EVP_R_INVALID_OPERATION
);
700 if (ctx
->cipher
== NULL
) {
701 EVPerr(EVP_F_EVP_ENCRYPTUPDATE
, EVP_R_NO_CIPHER_SET
);
705 if (ctx
->cipher
->prov
== NULL
)
708 blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
710 if (ctx
->cipher
->cupdate
== NULL
|| blocksize
< 1) {
711 EVPerr(EVP_F_EVP_ENCRYPTUPDATE
, EVP_R_UPDATE_ERROR
);
714 ret
= ctx
->cipher
->cupdate(ctx
->provctx
, out
, &soutl
,
715 inl
+ (blocksize
== 1 ? 0 : blocksize
), in
,
719 if (soutl
> INT_MAX
) {
720 EVPerr(EVP_F_EVP_ENCRYPTUPDATE
, EVP_R_UPDATE_ERROR
);
728 /* TODO(3.0): Remove legacy code below */
731 return evp_EncryptDecryptUpdate(ctx
, out
, outl
, in
, inl
);
734 int EVP_EncryptFinal(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
737 ret
= EVP_EncryptFinal_ex(ctx
, out
, outl
);
741 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
744 unsigned int i
, b
, bl
;
748 /* Prevent accidental use of decryption context when encrypting */
750 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX
, EVP_R_INVALID_OPERATION
);
754 if (ctx
->cipher
== NULL
) {
755 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX
, EVP_R_NO_CIPHER_SET
);
758 if (ctx
->cipher
->prov
== NULL
)
761 blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
763 if (blocksize
< 1 || ctx
->cipher
->cfinal
== NULL
) {
764 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX
, EVP_R_FINAL_ERROR
);
768 ret
= ctx
->cipher
->cfinal(ctx
->provctx
, out
, &soutl
,
769 blocksize
== 1 ? 0 : blocksize
);
772 if (soutl
> INT_MAX
) {
773 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX
, EVP_R_FINAL_ERROR
);
781 /* TODO(3.0): Remove legacy code below */
784 if (ctx
->cipher
->flags
& EVP_CIPH_FLAG_CUSTOM_CIPHER
) {
785 ret
= ctx
->cipher
->do_cipher(ctx
, out
, NULL
, 0);
793 b
= ctx
->cipher
->block_size
;
794 OPENSSL_assert(b
<= sizeof(ctx
->buf
));
800 if (ctx
->flags
& EVP_CIPH_NO_PADDING
) {
802 EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX
,
803 EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH
);
811 for (i
= bl
; i
< b
; i
++)
813 ret
= ctx
->cipher
->do_cipher(ctx
, out
, ctx
->buf
, b
);
821 int EVP_DecryptUpdate(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
,
822 const unsigned char *in
, int inl
)
824 int fix_len
, cmpl
= inl
, ret
;
829 /* Prevent accidental use of encryption context when decrypting */
831 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_INVALID_OPERATION
);
835 if (ctx
->cipher
== NULL
) {
836 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_NO_CIPHER_SET
);
839 if (ctx
->cipher
->prov
== NULL
)
842 blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
844 if (ctx
->cipher
->cupdate
== NULL
|| blocksize
< 1) {
845 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_UPDATE_ERROR
);
848 ret
= ctx
->cipher
->cupdate(ctx
->provctx
, out
, &soutl
,
849 inl
+ (blocksize
== 1 ? 0 : blocksize
), in
,
853 if (soutl
> INT_MAX
) {
854 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_UPDATE_ERROR
);
862 /* TODO(3.0): Remove legacy code below */
865 b
= ctx
->cipher
->block_size
;
867 if (EVP_CIPHER_CTX_test_flags(ctx
, EVP_CIPH_FLAG_LENGTH_BITS
))
868 cmpl
= (cmpl
+ 7) / 8;
870 if (ctx
->cipher
->flags
& EVP_CIPH_FLAG_CUSTOM_CIPHER
) {
871 if (b
== 1 && is_partially_overlapping(out
, in
, cmpl
)) {
872 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_PARTIALLY_OVERLAPPING
);
876 fix_len
= ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
);
890 if (ctx
->flags
& EVP_CIPH_NO_PADDING
)
891 return evp_EncryptDecryptUpdate(ctx
, out
, outl
, in
, inl
);
893 OPENSSL_assert(b
<= sizeof(ctx
->final
));
895 if (ctx
->final_used
) {
896 /* see comment about PTRDIFF_T comparison above */
897 if (((PTRDIFF_T
)out
== (PTRDIFF_T
)in
)
898 || is_partially_overlapping(out
, in
, b
)) {
899 EVPerr(EVP_F_EVP_DECRYPTUPDATE
, EVP_R_PARTIALLY_OVERLAPPING
);
902 memcpy(out
, ctx
->final
, b
);
908 if (!evp_EncryptDecryptUpdate(ctx
, out
, outl
, in
, inl
))
912 * if we have 'decrypted' a multiple of block size, make sure we have a
913 * copy of this last block
915 if (b
> 1 && !ctx
->buf_len
) {
918 memcpy(ctx
->final
, &out
[*outl
], b
);
928 int EVP_DecryptFinal(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
931 ret
= EVP_DecryptFinal_ex(ctx
, out
, outl
);
935 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX
*ctx
, unsigned char *out
, int *outl
)
943 /* Prevent accidental use of encryption context when decrypting */
945 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_INVALID_OPERATION
);
949 if (ctx
->cipher
== NULL
) {
950 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_NO_CIPHER_SET
);
954 if (ctx
->cipher
->prov
== NULL
)
957 blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
959 if (blocksize
< 1 || ctx
->cipher
->cfinal
== NULL
) {
960 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_FINAL_ERROR
);
964 ret
= ctx
->cipher
->cfinal(ctx
->provctx
, out
, &soutl
,
965 blocksize
== 1 ? 0 : blocksize
);
968 if (soutl
> INT_MAX
) {
969 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_FINAL_ERROR
);
977 /* TODO(3.0): Remove legacy code below */
981 if (ctx
->cipher
->flags
& EVP_CIPH_FLAG_CUSTOM_CIPHER
) {
982 i
= ctx
->cipher
->do_cipher(ctx
, out
, NULL
, 0);
990 b
= ctx
->cipher
->block_size
;
991 if (ctx
->flags
& EVP_CIPH_NO_PADDING
) {
993 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
,
994 EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH
);
1001 if (ctx
->buf_len
|| !ctx
->final_used
) {
1002 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_WRONG_FINAL_BLOCK_LENGTH
);
1005 OPENSSL_assert(b
<= sizeof(ctx
->final
));
1008 * The following assumes that the ciphertext has been authenticated.
1009 * Otherwise it provides a padding oracle.
1011 n
= ctx
->final
[b
- 1];
1012 if (n
== 0 || n
> (int)b
) {
1013 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_BAD_DECRYPT
);
1016 for (i
= 0; i
< n
; i
++) {
1017 if (ctx
->final
[--b
] != n
) {
1018 EVPerr(EVP_F_EVP_DECRYPTFINAL_EX
, EVP_R_BAD_DECRYPT
);
1022 n
= ctx
->cipher
->block_size
- n
;
1023 for (i
= 0; i
< n
; i
++)
1024 out
[i
] = ctx
->final
[i
];
1031 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX
*c
, int keylen
)
1033 if (c
->cipher
->prov
!= NULL
) {
1035 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
1036 size_t len
= keylen
;
1038 if (EVP_CIPHER_CTX_key_length(c
) == keylen
)
1041 /* Check the cipher actually understands this parameter */
1042 if (OSSL_PARAM_locate_const(EVP_CIPHER_settable_ctx_params(c
->cipher
),
1043 OSSL_CIPHER_PARAM_KEYLEN
) == NULL
)
1046 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &len
);
1047 ok
= evp_do_ciph_ctx_setparams(c
->cipher
, c
->provctx
, params
);
1049 return ok
> 0 ? 1 : 0;
1052 /* TODO(3.0) legacy code follows */
1055 * Note there have never been any built-in ciphers that define this flag
1056 * since it was first introduced.
1058 if (c
->cipher
->flags
& EVP_CIPH_CUSTOM_KEY_LENGTH
)
1059 return EVP_CIPHER_CTX_ctrl(c
, EVP_CTRL_SET_KEY_LENGTH
, keylen
, NULL
);
1060 if (EVP_CIPHER_CTX_key_length(c
) == keylen
)
1062 if ((keylen
> 0) && (c
->cipher
->flags
& EVP_CIPH_VARIABLE_LENGTH
)) {
1063 c
->key_len
= keylen
;
1066 EVPerr(EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH
, EVP_R_INVALID_KEY_LENGTH
);
1070 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX
*ctx
, int pad
)
1073 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
1074 unsigned int pd
= pad
;
1077 ctx
->flags
&= ~EVP_CIPH_NO_PADDING
;
1079 ctx
->flags
|= EVP_CIPH_NO_PADDING
;
1081 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_PADDING
, &pd
);
1082 ok
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1087 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX
*ctx
, int type
, int arg
, void *ptr
)
1089 int ret
= EVP_CTRL_RET_UNSUPPORTED
;
1093 OSSL_PARAM params
[4] = {
1094 OSSL_PARAM_END
, OSSL_PARAM_END
, OSSL_PARAM_END
, OSSL_PARAM_END
1097 if (ctx
== NULL
|| ctx
->cipher
== NULL
) {
1098 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL
, EVP_R_NO_CIPHER_SET
);
1102 if (ctx
->cipher
->prov
== NULL
)
1106 case EVP_CTRL_SET_KEY_LENGTH
:
1107 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &sz
);
1109 case EVP_CTRL_RAND_KEY
: /* Used by DES */
1112 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY
,
1118 * TODO(3.0) EVP_CTRL_INIT is purely legacy, no provider counterpart
1119 * As a matter of fact, this should be dead code, but some caller
1120 * might still do a direct control call with this command, so...
1121 * Legacy methods return 1 except for exceptional circumstances, so
1122 * we do the same here to not be disruptive.
1125 case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS
: /* Used by DASYNC */
1128 case EVP_CTRL_GET_IV
:
1130 params
[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV
,
1133 case EVP_CTRL_AEAD_SET_IVLEN
:
1136 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN
, &sz
);
1138 case EVP_CTRL_GCM_SET_IV_FIXED
:
1140 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_IV_FIXED
,
1143 case EVP_CTRL_GET_RC5_ROUNDS
:
1144 set_params
= 0; /* Fall thru */
1145 case EVP_CTRL_SET_RC5_ROUNDS
:
1148 i
= (unsigned int)arg
;
1149 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_ROUNDS
, &i
);
1151 case EVP_CTRL_SET_SPEED
:
1154 i
= (unsigned int)arg
;
1155 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_SPEED
, &i
);
1157 case EVP_CTRL_AEAD_GET_TAG
:
1158 set_params
= 0; /* Fall thru */
1159 case EVP_CTRL_AEAD_SET_TAG
:
1160 params
[0] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG
,
1163 case EVP_CTRL_AEAD_TLS1_AAD
:
1164 /* This one does a set and a get - since it returns a size */
1166 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD
,
1168 ret
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1172 OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD
, &sz
);
1173 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
1177 #ifndef OPENSSL_NO_RC2
1178 case EVP_CTRL_GET_RC2_KEY_BITS
:
1179 set_params
= 0; /* Fall thru */
1180 case EVP_CTRL_SET_RC2_KEY_BITS
:
1181 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS
, &sz
);
1183 #endif /* OPENSSL_NO_RC2 */
1184 #if !defined(OPENSSL_NO_MULTIBLOCK)
1185 case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE
:
1186 params
[0] = OSSL_PARAM_construct_size_t(
1187 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_SEND_FRAGMENT
, &sz
);
1188 ret
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1192 params
[0] = OSSL_PARAM_construct_size_t(
1193 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_MAX_BUFSIZE
, &sz
);
1194 params
[1] = OSSL_PARAM_construct_end();
1195 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
1199 case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD
: {
1200 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*p
=
1201 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*)ptr
;
1203 if (arg
< (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
))
1206 params
[0] = OSSL_PARAM_construct_octet_string(
1207 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD
, (void*)p
->inp
, p
->len
);
1208 params
[1] = OSSL_PARAM_construct_uint(
1209 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE
, &p
->interleave
);
1210 ret
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1213 /* Retrieve the return values changed by the set */
1214 params
[0] = OSSL_PARAM_construct_size_t(
1215 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_AAD_PACKLEN
, &sz
);
1216 params
[1] = OSSL_PARAM_construct_uint(
1217 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE
, &p
->interleave
);
1218 params
[2] = OSSL_PARAM_construct_end();
1219 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
1224 case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT
: {
1225 EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*p
=
1226 (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM
*)ptr
;
1228 params
[0] = OSSL_PARAM_construct_octet_string(
1229 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC
, p
->out
, p
->len
);
1231 params
[1] = OSSL_PARAM_construct_octet_string(
1232 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_IN
, (void*)p
->inp
,
1234 params
[2] = OSSL_PARAM_construct_uint(
1235 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_INTERLEAVE
, &p
->interleave
);
1236 ret
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1239 params
[0] = OSSL_PARAM_construct_size_t(
1240 OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK_ENC_LEN
, &sz
);
1241 params
[1] = OSSL_PARAM_construct_end();
1242 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
1247 #endif /* OPENSSL_NO_MULTIBLOCK */
1248 case EVP_CTRL_AEAD_SET_MAC_KEY
:
1251 params
[0] = OSSL_PARAM_construct_octet_string(
1252 OSSL_CIPHER_PARAM_AEAD_MAC_KEY
, ptr
, sz
);
1257 ret
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
1259 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
1262 /* TODO(3.0): Remove legacy code below */
1264 if (ctx
->cipher
->ctrl
== NULL
) {
1265 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL
, EVP_R_CTRL_NOT_IMPLEMENTED
);
1269 ret
= ctx
->cipher
->ctrl(ctx
, type
, arg
, ptr
);
1272 if (ret
== EVP_CTRL_RET_UNSUPPORTED
) {
1273 EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL
,
1274 EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED
);
1280 int EVP_CIPHER_get_params(EVP_CIPHER
*cipher
, OSSL_PARAM params
[])
1282 if (cipher
!= NULL
&& cipher
->get_params
!= NULL
)
1283 return cipher
->get_params(params
);
1287 int EVP_CIPHER_CTX_set_params(EVP_CIPHER_CTX
*ctx
, const OSSL_PARAM params
[])
1289 if (ctx
->cipher
!= NULL
&& ctx
->cipher
->set_ctx_params
!= NULL
)
1290 return ctx
->cipher
->set_ctx_params(ctx
->provctx
, params
);
1294 int EVP_CIPHER_CTX_get_params(EVP_CIPHER_CTX
*ctx
, OSSL_PARAM params
[])
1296 if (ctx
->cipher
!= NULL
&& ctx
->cipher
->get_ctx_params
!= NULL
)
1297 return ctx
->cipher
->get_ctx_params(ctx
->provctx
, params
);
1301 const OSSL_PARAM
*EVP_CIPHER_gettable_params(const EVP_CIPHER
*cipher
)
1303 if (cipher
!= NULL
&& cipher
->gettable_params
!= NULL
)
1304 return cipher
->gettable_params();
1308 const OSSL_PARAM
*EVP_CIPHER_settable_ctx_params(const EVP_CIPHER
*cipher
)
1310 if (cipher
!= NULL
&& cipher
->settable_ctx_params
!= NULL
)
1311 return cipher
->settable_ctx_params();
1315 const OSSL_PARAM
*EVP_CIPHER_gettable_ctx_params(const EVP_CIPHER
*cipher
)
1317 if (cipher
!= NULL
&& cipher
->gettable_ctx_params
!= NULL
)
1318 return cipher
->gettable_ctx_params();
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
);
1333 kl
= EVP_CIPHER_CTX_key_length(ctx
);
1334 if (kl
<= 0 || RAND_priv_bytes(key
, kl
) <= 0)
1338 #endif /* FIPS_MODE */
1341 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX
*out
, const EVP_CIPHER_CTX
*in
)
1343 if ((in
== NULL
) || (in
->cipher
== NULL
)) {
1344 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, EVP_R_INPUT_NOT_INITIALIZED
);
1348 if (in
->cipher
->prov
== NULL
)
1351 if (in
->cipher
->dupctx
== NULL
) {
1352 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, EVP_R_NOT_ABLE_TO_COPY_CTX
);
1356 EVP_CIPHER_CTX_reset(out
);
1359 out
->provctx
= NULL
;
1361 if (in
->fetched_cipher
!= NULL
&& !EVP_CIPHER_up_ref(in
->fetched_cipher
)) {
1362 out
->fetched_cipher
= NULL
;
1366 out
->provctx
= in
->cipher
->dupctx(in
->provctx
);
1367 if (out
->provctx
== NULL
) {
1368 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, EVP_R_NOT_ABLE_TO_COPY_CTX
);
1374 /* TODO(3.0): Remove legacy code below */
1377 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
1378 /* Make sure it's safe to copy a cipher context using an ENGINE */
1379 if (in
->engine
&& !ENGINE_init(in
->engine
)) {
1380 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, ERR_R_ENGINE_LIB
);
1385 EVP_CIPHER_CTX_reset(out
);
1386 memcpy(out
, in
, sizeof(*out
));
1388 if (in
->cipher_data
&& in
->cipher
->ctx_size
) {
1389 out
->cipher_data
= OPENSSL_malloc(in
->cipher
->ctx_size
);
1390 if (out
->cipher_data
== NULL
) {
1392 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, ERR_R_MALLOC_FAILURE
);
1395 memcpy(out
->cipher_data
, in
->cipher_data
, in
->cipher
->ctx_size
);
1398 if (in
->cipher
->flags
& EVP_CIPH_CUSTOM_COPY
)
1399 if (!in
->cipher
->ctrl((EVP_CIPHER_CTX
*)in
, EVP_CTRL_COPY
, 0, out
)) {
1401 EVPerr(EVP_F_EVP_CIPHER_CTX_COPY
, EVP_R_INITIALIZATION_ERROR
);
1407 EVP_CIPHER
*evp_cipher_new(void)
1409 EVP_CIPHER
*cipher
= OPENSSL_zalloc(sizeof(EVP_CIPHER
));
1411 if (cipher
!= NULL
) {
1412 cipher
->lock
= CRYPTO_THREAD_lock_new();
1413 if (cipher
->lock
== NULL
) {
1414 OPENSSL_free(cipher
);
1423 * FIPS module note: since internal fetches will be entirely
1424 * provider based, we know that none of its code depends on legacy
1425 * NIDs or any functionality that use them.
1428 /* TODO(3.x) get rid of the need for legacy NIDs */
1429 static void set_legacy_nid(const char *name
, void *vlegacy_nid
)
1432 int *legacy_nid
= vlegacy_nid
;
1434 * We use lowest level function to get the associated method, because
1435 * higher level functions such as EVP_get_cipherbyname() have changed
1436 * to look at providers too.
1438 const void *legacy_method
= OBJ_NAME_get(name
, OBJ_NAME_TYPE_CIPHER_METH
);
1440 if (*legacy_nid
== -1) /* We found a clash already */
1442 if (legacy_method
== NULL
)
1444 nid
= EVP_CIPHER_nid(legacy_method
);
1445 if (*legacy_nid
!= NID_undef
&& *legacy_nid
!= nid
) {
1453 static void *evp_cipher_from_dispatch(const int name_id
,
1454 const OSSL_DISPATCH
*fns
,
1455 OSSL_PROVIDER
*prov
)
1457 EVP_CIPHER
*cipher
= NULL
;
1458 int fnciphcnt
= 0, fnctxcnt
= 0;
1460 if ((cipher
= evp_cipher_new()) == NULL
) {
1461 EVPerr(0, ERR_R_MALLOC_FAILURE
);
1466 /* TODO(3.x) get rid of the need for legacy NIDs */
1467 cipher
->nid
= NID_undef
;
1468 evp_names_do_all(prov
, name_id
, set_legacy_nid
, &cipher
->nid
);
1469 if (cipher
->nid
== -1) {
1470 ERR_raise(ERR_LIB_EVP
, ERR_R_INTERNAL_ERROR
);
1471 EVP_CIPHER_free(cipher
);
1476 cipher
->name_id
= name_id
;
1478 for (; fns
->function_id
!= 0; fns
++) {
1479 switch (fns
->function_id
) {
1480 case OSSL_FUNC_CIPHER_NEWCTX
:
1481 if (cipher
->newctx
!= NULL
)
1483 cipher
->newctx
= OSSL_get_OP_cipher_newctx(fns
);
1486 case OSSL_FUNC_CIPHER_ENCRYPT_INIT
:
1487 if (cipher
->einit
!= NULL
)
1489 cipher
->einit
= OSSL_get_OP_cipher_encrypt_init(fns
);
1492 case OSSL_FUNC_CIPHER_DECRYPT_INIT
:
1493 if (cipher
->dinit
!= NULL
)
1495 cipher
->dinit
= OSSL_get_OP_cipher_decrypt_init(fns
);
1498 case OSSL_FUNC_CIPHER_UPDATE
:
1499 if (cipher
->cupdate
!= NULL
)
1501 cipher
->cupdate
= OSSL_get_OP_cipher_update(fns
);
1504 case OSSL_FUNC_CIPHER_FINAL
:
1505 if (cipher
->cfinal
!= NULL
)
1507 cipher
->cfinal
= OSSL_get_OP_cipher_final(fns
);
1510 case OSSL_FUNC_CIPHER_CIPHER
:
1511 if (cipher
->ccipher
!= NULL
)
1513 cipher
->ccipher
= OSSL_get_OP_cipher_cipher(fns
);
1515 case OSSL_FUNC_CIPHER_FREECTX
:
1516 if (cipher
->freectx
!= NULL
)
1518 cipher
->freectx
= OSSL_get_OP_cipher_freectx(fns
);
1521 case OSSL_FUNC_CIPHER_DUPCTX
:
1522 if (cipher
->dupctx
!= NULL
)
1524 cipher
->dupctx
= OSSL_get_OP_cipher_dupctx(fns
);
1526 case OSSL_FUNC_CIPHER_GET_PARAMS
:
1527 if (cipher
->get_params
!= NULL
)
1529 cipher
->get_params
= OSSL_get_OP_cipher_get_params(fns
);
1531 case OSSL_FUNC_CIPHER_GET_CTX_PARAMS
:
1532 if (cipher
->get_ctx_params
!= NULL
)
1534 cipher
->get_ctx_params
= OSSL_get_OP_cipher_get_ctx_params(fns
);
1536 case OSSL_FUNC_CIPHER_SET_CTX_PARAMS
:
1537 if (cipher
->set_ctx_params
!= NULL
)
1539 cipher
->set_ctx_params
= OSSL_get_OP_cipher_set_ctx_params(fns
);
1541 case OSSL_FUNC_CIPHER_GETTABLE_PARAMS
:
1542 if (cipher
->gettable_params
!= NULL
)
1544 cipher
->gettable_params
= OSSL_get_OP_cipher_gettable_params(fns
);
1546 case OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS
:
1547 if (cipher
->gettable_ctx_params
!= NULL
)
1549 cipher
->gettable_ctx_params
=
1550 OSSL_get_OP_cipher_gettable_ctx_params(fns
);
1552 case OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS
:
1553 if (cipher
->settable_ctx_params
!= NULL
)
1555 cipher
->settable_ctx_params
=
1556 OSSL_get_OP_cipher_settable_ctx_params(fns
);
1560 if ((fnciphcnt
!= 0 && fnciphcnt
!= 3 && fnciphcnt
!= 4)
1561 || (fnciphcnt
== 0 && cipher
->ccipher
== NULL
)
1564 * In order to be a consistent set of functions we must have at least
1565 * a complete set of "encrypt" functions, or a complete set of "decrypt"
1566 * functions, or a single "cipher" function. In all cases we need both
1567 * the "newctx" and "freectx" functions.
1569 EVP_CIPHER_free(cipher
);
1570 EVPerr(EVP_F_EVP_CIPHER_FROM_DISPATCH
, EVP_R_INVALID_PROVIDER_FUNCTIONS
);
1573 cipher
->prov
= prov
;
1575 ossl_provider_up_ref(prov
);
1580 static int evp_cipher_up_ref(void *cipher
)
1582 return EVP_CIPHER_up_ref(cipher
);
1585 static void evp_cipher_free(void *cipher
)
1587 EVP_CIPHER_free(cipher
);
1590 EVP_CIPHER
*EVP_CIPHER_fetch(OPENSSL_CTX
*ctx
, const char *algorithm
,
1591 const char *properties
)
1593 EVP_CIPHER
*cipher
=
1594 evp_generic_fetch(ctx
, OSSL_OP_CIPHER
, algorithm
, properties
,
1595 evp_cipher_from_dispatch
, evp_cipher_up_ref
,
1598 if (cipher
!= NULL
&& !evp_cipher_cache_constants(cipher
)) {
1599 EVP_CIPHER_free(cipher
);
1605 int EVP_CIPHER_up_ref(EVP_CIPHER
*cipher
)
1609 CRYPTO_UP_REF(&cipher
->refcnt
, &ref
, cipher
->lock
);
1613 void EVP_CIPHER_free(EVP_CIPHER
*cipher
)
1620 CRYPTO_DOWN_REF(&cipher
->refcnt
, &i
, cipher
->lock
);
1623 ossl_provider_free(cipher
->prov
);
1624 CRYPTO_THREAD_lock_free(cipher
->lock
);
1625 OPENSSL_free(cipher
);
1628 void EVP_CIPHER_do_all_provided(OPENSSL_CTX
*libctx
,
1629 void (*fn
)(EVP_CIPHER
*mac
, void *arg
),
1632 evp_generic_do_all(libctx
, OSSL_OP_CIPHER
,
1633 (void (*)(void *, void *))fn
, arg
,
1634 evp_cipher_from_dispatch
, evp_cipher_free
);