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
11 * EVP _meth_ APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
17 #include "internal/cryptlib.h"
18 #include <openssl/evp.h>
19 #include <openssl/objects.h>
20 #include <openssl/params.h>
21 #include <openssl/core_names.h>
22 #include <openssl/dh.h>
23 #include <openssl/ec.h>
24 #include "crypto/evp.h"
25 #include "crypto/asn1.h"
26 #include "internal/provider.h"
27 #include "evp_local.h"
29 #if !defined(FIPS_MODULE)
30 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
32 return evp_cipher_param_to_asn1_ex(c
, type
, NULL
);
35 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
37 return evp_cipher_asn1_to_param_ex(c
, type
, NULL
);
40 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX
*ctx
, ASN1_TYPE
*type
)
46 unsigned char iv
[EVP_MAX_IV_LENGTH
];
48 l
= EVP_CIPHER_CTX_iv_length(ctx
);
49 if (!ossl_assert(l
<= sizeof(iv
)))
51 i
= ASN1_TYPE_get_octetstring(type
, iv
, l
);
55 if (!EVP_CipherInit_ex(ctx
, NULL
, NULL
, NULL
, iv
, -1))
61 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
65 unsigned char *oiv
= NULL
;
68 oiv
= (unsigned char *)EVP_CIPHER_CTX_original_iv(c
);
69 j
= EVP_CIPHER_CTX_iv_length(c
);
70 OPENSSL_assert(j
<= sizeof(c
->iv
));
71 i
= ASN1_TYPE_set_octetstring(type
, oiv
, j
);
76 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
,
77 evp_cipher_aead_asn1_params
*asn1_params
)
79 int ret
= -1; /* Assume the worst */
80 const EVP_CIPHER
*cipher
= c
->cipher
;
83 * For legacy implementations, we detect custom AlgorithmIdentifier
84 * parameter handling by checking if the function pointer
85 * cipher->set_asn1_parameters is set. We know that this pointer
86 * is NULL for provided implementations.
88 * Otherwise, for any implementation, we check the flag
89 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
90 * default AI parameter extraction.
92 * Otherwise, for provided implementations, we convert |type| to
93 * a DER encoded blob and pass to the implementation in OSSL_PARAM
96 * If none of the above applies, this operation is unsupported.
98 if (cipher
->set_asn1_parameters
!= NULL
) {
99 ret
= cipher
->set_asn1_parameters(c
, type
);
100 } else if ((EVP_CIPHER_flags(cipher
) & EVP_CIPH_FLAG_CUSTOM_ASN1
) == 0) {
101 switch (EVP_CIPHER_mode(cipher
)) {
102 case EVP_CIPH_WRAP_MODE
:
103 if (EVP_CIPHER_is_a(cipher
, SN_id_smime_alg_CMS3DESwrap
))
104 ASN1_TYPE_set(type
, V_ASN1_NULL
, NULL
);
108 case EVP_CIPH_GCM_MODE
:
109 ret
= evp_cipher_set_asn1_aead_params(c
, type
, asn1_params
);
112 case EVP_CIPH_CCM_MODE
:
113 case EVP_CIPH_XTS_MODE
:
114 case EVP_CIPH_OCB_MODE
:
119 ret
= EVP_CIPHER_set_asn1_iv(c
, type
);
121 } else if (cipher
->prov
!= NULL
) {
122 OSSL_PARAM params
[3], *p
= params
;
123 unsigned char *der
= NULL
, *derp
;
126 * We make two passes, the first to get the appropriate buffer size,
127 * and the second to get the actual value.
129 *p
++ = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_ALG_ID
,
131 *p
= OSSL_PARAM_construct_end();
133 if (!EVP_CIPHER_CTX_get_params(c
, params
))
136 /* ... but, we should get a return size too! */
137 if (OSSL_PARAM_modified(params
)
138 && params
[0].return_size
!= 0
139 && (der
= OPENSSL_malloc(params
[0].return_size
)) != NULL
) {
140 params
[0].data
= der
;
141 params
[0].data_size
= params
[0].return_size
;
142 OSSL_PARAM_set_all_unmodified(params
);
144 if (EVP_CIPHER_CTX_get_params(c
, params
)
145 && OSSL_PARAM_modified(params
)
146 && d2i_ASN1_TYPE(&type
, (const unsigned char **)&derp
,
147 params
[0].return_size
) != NULL
) {
158 ERR_raise(ERR_LIB_EVP
, EVP_R_UNSUPPORTED_CIPHER
);
160 ERR_raise(ERR_LIB_EVP
, EVP_R_CIPHER_PARAMETER_ERROR
);
166 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
,
167 evp_cipher_aead_asn1_params
*asn1_params
)
169 int ret
= -1; /* Assume the worst */
170 const EVP_CIPHER
*cipher
= c
->cipher
;
173 * For legacy implementations, we detect custom AlgorithmIdentifier
174 * parameter handling by checking if there the function pointer
175 * cipher->get_asn1_parameters is set. We know that this pointer
176 * is NULL for provided implementations.
178 * Otherwise, for any implementation, we check the flag
179 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
180 * default AI parameter creation.
182 * Otherwise, for provided implementations, we get the AI parameter
183 * in DER encoded form from the implementation by requesting the
184 * appropriate OSSL_PARAM and converting the result to a ASN1_TYPE.
186 * If none of the above applies, this operation is unsupported.
188 if (cipher
->get_asn1_parameters
!= NULL
) {
189 ret
= cipher
->get_asn1_parameters(c
, type
);
190 } else if ((EVP_CIPHER_flags(cipher
) & EVP_CIPH_FLAG_CUSTOM_ASN1
) == 0) {
191 switch (EVP_CIPHER_mode(cipher
)) {
192 case EVP_CIPH_WRAP_MODE
:
196 case EVP_CIPH_GCM_MODE
:
197 ret
= evp_cipher_get_asn1_aead_params(c
, type
, asn1_params
);
200 case EVP_CIPH_CCM_MODE
:
201 case EVP_CIPH_XTS_MODE
:
202 case EVP_CIPH_OCB_MODE
:
207 ret
= EVP_CIPHER_get_asn1_iv(c
, type
);
209 } else if (cipher
->prov
!= NULL
) {
210 OSSL_PARAM params
[3], *p
= params
;
211 unsigned char *der
= NULL
;
214 if ((derl
= i2d_ASN1_TYPE(type
, &der
)) >= 0) {
216 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_ALG_ID
,
218 *p
= OSSL_PARAM_construct_end();
219 if (EVP_CIPHER_CTX_set_params(c
, params
))
228 ERR_raise(ERR_LIB_EVP
, EVP_R_UNSUPPORTED_CIPHER
);
230 ERR_raise(ERR_LIB_EVP
, EVP_R_CIPHER_PARAMETER_ERROR
);
236 int evp_cipher_get_asn1_aead_params(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
,
237 evp_cipher_aead_asn1_params
*asn1_params
)
241 unsigned char iv
[EVP_MAX_IV_LENGTH
];
243 if (type
== NULL
|| asn1_params
== NULL
)
246 i
= asn1_type_get_octetstring_int(type
, &tl
, NULL
, EVP_MAX_IV_LENGTH
);
249 asn1_type_get_octetstring_int(type
, &tl
, iv
, i
);
251 memcpy(asn1_params
->iv
, iv
, i
);
252 asn1_params
->iv_len
= i
;
257 int evp_cipher_set_asn1_aead_params(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
,
258 evp_cipher_aead_asn1_params
*asn1_params
)
260 if (type
== NULL
|| asn1_params
== NULL
)
263 return asn1_type_set_octetstring_int(type
, asn1_params
->tag_len
,
264 asn1_params
->iv
, asn1_params
->iv_len
);
266 #endif /* !defined(FIPS_MODULE) */
268 /* Convert the various cipher NIDs and dummies to a proper OID NID */
269 int EVP_CIPHER_type(const EVP_CIPHER
*ctx
)
272 nid
= EVP_CIPHER_nid(ctx
);
287 case NID_aes_128_cfb128
:
288 case NID_aes_128_cfb8
:
289 case NID_aes_128_cfb1
:
291 return NID_aes_128_cfb128
;
293 case NID_aes_192_cfb128
:
294 case NID_aes_192_cfb8
:
295 case NID_aes_192_cfb1
:
297 return NID_aes_192_cfb128
;
299 case NID_aes_256_cfb128
:
300 case NID_aes_256_cfb8
:
301 case NID_aes_256_cfb1
:
303 return NID_aes_256_cfb128
;
309 return NID_des_cfb64
;
311 case NID_des_ede3_cfb64
:
312 case NID_des_ede3_cfb8
:
313 case NID_des_ede3_cfb1
:
315 return NID_des_cfb64
;
322 /* Check it has an OID and it is valid */
323 ASN1_OBJECT
*otmp
= OBJ_nid2obj(nid
);
325 if (OBJ_get0_data(otmp
) == NULL
)
327 ASN1_OBJECT_free(otmp
);
334 int evp_cipher_cache_constants(EVP_CIPHER
*cipher
)
336 int ok
, aead
= 0, custom_iv
= 0, cts
= 0, multiblock
= 0;
340 unsigned int mode
= 0;
341 OSSL_PARAM params
[9];
343 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE
, &blksz
);
344 params
[1] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN
, &ivlen
);
345 params
[2] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &keylen
);
346 params
[3] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE
, &mode
);
347 params
[4] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_AEAD
, &aead
);
348 params
[5] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CUSTOM_IV
,
350 params
[6] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CTS
, &cts
);
351 params
[7] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK
,
353 params
[8] = OSSL_PARAM_construct_end();
354 ok
= evp_do_ciph_getparams(cipher
, params
);
356 cipher
->block_size
= blksz
;
357 cipher
->iv_len
= ivlen
;
358 cipher
->key_len
= keylen
;
359 cipher
->flags
= mode
;
361 cipher
->flags
|= EVP_CIPH_FLAG_AEAD_CIPHER
;
363 cipher
->flags
|= EVP_CIPH_CUSTOM_IV
;
365 cipher
->flags
|= EVP_CIPH_FLAG_CTS
;
367 cipher
->flags
|= EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
;
368 /* Provided implementations may have a custom cipher_cipher */
369 if (cipher
->prov
!= NULL
&& cipher
->ccipher
!= NULL
)
370 cipher
->flags
|= EVP_CIPH_FLAG_CUSTOM_CIPHER
;
375 int EVP_CIPHER_block_size(const EVP_CIPHER
*cipher
)
377 return cipher
->block_size
;
380 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX
*ctx
)
382 return EVP_CIPHER_block_size(ctx
->cipher
);
385 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER
*e
)
390 int EVP_Cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
391 const unsigned char *in
, unsigned int inl
)
393 if (ctx
->cipher
->prov
!= NULL
) {
395 * If the provided implementation has a ccipher function, we use it,
396 * and translate its return value like this: 0 => -1, 1 => outlen
398 * Otherwise, we call the cupdate function if in != NULL, or cfinal
399 * if in == NULL. Regardless of which, we return what we got.
403 size_t blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
405 if (ctx
->cipher
->ccipher
!= NULL
)
406 ret
= ctx
->cipher
->ccipher(ctx
->provctx
, out
, &outl
,
407 inl
+ (blocksize
== 1 ? 0 : blocksize
),
411 ret
= ctx
->cipher
->cupdate(ctx
->provctx
, out
, &outl
,
412 inl
+ (blocksize
== 1 ? 0 : blocksize
),
415 ret
= ctx
->cipher
->cfinal(ctx
->provctx
, out
, &outl
,
416 blocksize
== 1 ? 0 : blocksize
);
421 return ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
);
424 const EVP_CIPHER
*EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX
*ctx
)
429 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX
*ctx
)
434 unsigned long EVP_CIPHER_flags(const EVP_CIPHER
*cipher
)
436 return cipher
->flags
;
439 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX
*ctx
)
441 return ctx
->app_data
;
444 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX
*ctx
, void *data
)
446 ctx
->app_data
= data
;
449 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX
*ctx
)
451 return ctx
->cipher_data
;
454 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX
*ctx
, void *cipher_data
)
456 void *old_cipher_data
;
458 old_cipher_data
= ctx
->cipher_data
;
459 ctx
->cipher_data
= cipher_data
;
461 return old_cipher_data
;
464 int EVP_CIPHER_iv_length(const EVP_CIPHER
*cipher
)
466 return cipher
->iv_len
;
469 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX
*ctx
)
471 int rv
, len
= EVP_CIPHER_iv_length(ctx
->cipher
);
473 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
475 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN
, &v
);
476 rv
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
477 if (rv
== EVP_CTRL_RET_UNSUPPORTED
)
479 return rv
!= 0 ? (int)v
: -1;
480 /* TODO (3.0) Remove legacy support */
482 if ((EVP_CIPHER_flags(ctx
->cipher
) & EVP_CIPH_CUSTOM_IV_LENGTH
) != 0) {
483 rv
= EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX
*)ctx
, EVP_CTRL_GET_IVLEN
,
485 return (rv
== 1) ? len
: -1;
490 int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX
*ctx
)
494 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
496 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN
, &v
);
497 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
498 return ret
== 1 ? (int)v
: 0;
501 #ifndef OPENSSL_NO_DEPRECATED_3_0
502 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX
*ctx
)
505 const unsigned char *v
= ctx
->oiv
;
506 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
509 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV
,
510 (void **)&v
, sizeof(ctx
->oiv
));
511 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
513 return ok
!= 0 ? v
: NULL
;
517 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
519 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX
*ctx
)
522 const unsigned char *v
= ctx
->iv
;
523 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
526 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV
,
527 (void **)&v
, sizeof(ctx
->iv
));
528 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
530 return ok
!= 0 ? v
: NULL
;
533 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX
*ctx
)
536 unsigned char *v
= ctx
->iv
;
537 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
540 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV
,
541 (void **)&v
, sizeof(ctx
->iv
));
542 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
544 return ok
!= 0 ? v
: NULL
;
546 #endif /* OPENSSL_NO_DEPRECATED_3_0_0 */
548 int EVP_CIPHER_CTX_get_updated_iv(EVP_CIPHER_CTX
*ctx
, void *buf
, size_t len
)
550 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
553 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_UPDATED_IV
, buf
, len
);
554 return evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
557 int EVP_CIPHER_CTX_get_original_iv(EVP_CIPHER_CTX
*ctx
, void *buf
, size_t len
)
559 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
562 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV
, buf
, len
);
563 return evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
566 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX
*ctx
)
571 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX
*ctx
)
574 unsigned int v
= (unsigned int)ctx
->num
;
575 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
577 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM
, &v
);
578 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
580 return ok
!= 0 ? (int)v
: EVP_CTRL_RET_UNSUPPORTED
;
583 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX
*ctx
, int num
)
586 unsigned int n
= (unsigned int)num
;
587 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
589 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM
, &n
);
590 ok
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
597 int EVP_CIPHER_key_length(const EVP_CIPHER
*cipher
)
599 return cipher
->key_len
;
602 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX
*ctx
)
605 size_t v
= ctx
->key_len
;
606 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
608 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &v
);
609 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
611 return ok
!= 0 ? (int)v
: EVP_CTRL_RET_UNSUPPORTED
;
614 int EVP_CIPHER_nid(const EVP_CIPHER
*cipher
)
619 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX
*ctx
)
621 return ctx
->cipher
->nid
;
624 int EVP_CIPHER_is_a(const EVP_CIPHER
*cipher
, const char *name
)
626 if (cipher
->prov
!= NULL
)
627 return evp_is_a(cipher
->prov
, cipher
->name_id
, NULL
, name
);
628 return evp_is_a(NULL
, 0, EVP_CIPHER_name(cipher
), name
);
631 int EVP_CIPHER_number(const EVP_CIPHER
*cipher
)
633 return cipher
->name_id
;
636 const char *EVP_CIPHER_name(const EVP_CIPHER
*cipher
)
638 if (cipher
->prov
!= NULL
)
639 return evp_first_name(cipher
->prov
, cipher
->name_id
);
641 return OBJ_nid2sn(EVP_CIPHER_nid(cipher
));
647 int EVP_CIPHER_names_do_all(const EVP_CIPHER
*cipher
,
648 void (*fn
)(const char *name
, void *data
),
651 if (cipher
->prov
!= NULL
)
652 return evp_names_do_all(cipher
->prov
, cipher
->name_id
, fn
, data
);
657 const OSSL_PROVIDER
*EVP_CIPHER_provider(const EVP_CIPHER
*cipher
)
662 int EVP_CIPHER_mode(const EVP_CIPHER
*cipher
)
664 return EVP_CIPHER_flags(cipher
) & EVP_CIPH_MODE
;
667 int EVP_MD_is_a(const EVP_MD
*md
, const char *name
)
669 if (md
->prov
!= NULL
)
670 return evp_is_a(md
->prov
, md
->name_id
, NULL
, name
);
671 return evp_is_a(NULL
, 0, EVP_MD_name(md
), name
);
674 int EVP_MD_number(const EVP_MD
*md
)
679 const char *EVP_MD_name(const EVP_MD
*md
)
681 if (md
->prov
!= NULL
)
682 return evp_first_name(md
->prov
, md
->name_id
);
684 return OBJ_nid2sn(EVP_MD_nid(md
));
690 int EVP_MD_names_do_all(const EVP_MD
*md
,
691 void (*fn
)(const char *name
, void *data
),
694 if (md
->prov
!= NULL
)
695 return evp_names_do_all(md
->prov
, md
->name_id
, fn
, data
);
700 const OSSL_PROVIDER
*EVP_MD_provider(const EVP_MD
*md
)
705 int EVP_MD_type(const EVP_MD
*md
)
710 int EVP_MD_pkey_type(const EVP_MD
*md
)
712 return md
->pkey_type
;
715 int EVP_MD_block_size(const EVP_MD
*md
)
718 ERR_raise(ERR_LIB_EVP
, EVP_R_MESSAGE_DIGEST_IS_NULL
);
721 return md
->block_size
;
724 int EVP_MD_size(const EVP_MD
*md
)
727 ERR_raise(ERR_LIB_EVP
, EVP_R_MESSAGE_DIGEST_IS_NULL
);
733 unsigned long EVP_MD_flags(const EVP_MD
*md
)
738 EVP_MD
*EVP_MD_meth_new(int md_type
, int pkey_type
)
740 EVP_MD
*md
= evp_md_new();
744 md
->pkey_type
= pkey_type
;
749 EVP_MD
*EVP_MD_meth_dup(const EVP_MD
*md
)
754 * Non-legacy EVP_MDs can't be duplicated like this.
755 * Use EVP_MD_up_ref() instead.
757 if (md
->prov
!= NULL
)
760 if ((to
= EVP_MD_meth_new(md
->type
, md
->pkey_type
)) != NULL
) {
761 CRYPTO_RWLOCK
*lock
= to
->lock
;
763 memcpy(to
, md
, sizeof(*to
));
769 void EVP_MD_meth_free(EVP_MD
*md
)
773 int EVP_MD_meth_set_input_blocksize(EVP_MD
*md
, int blocksize
)
775 if (md
->block_size
!= 0)
778 md
->block_size
= blocksize
;
781 int EVP_MD_meth_set_result_size(EVP_MD
*md
, int resultsize
)
783 if (md
->md_size
!= 0)
786 md
->md_size
= resultsize
;
789 int EVP_MD_meth_set_app_datasize(EVP_MD
*md
, int datasize
)
791 if (md
->ctx_size
!= 0)
794 md
->ctx_size
= datasize
;
797 int EVP_MD_meth_set_flags(EVP_MD
*md
, unsigned long flags
)
805 int EVP_MD_meth_set_init(EVP_MD
*md
, int (*init
)(EVP_MD_CTX
*ctx
))
807 if (md
->init
!= NULL
)
813 int EVP_MD_meth_set_update(EVP_MD
*md
, int (*update
)(EVP_MD_CTX
*ctx
,
817 if (md
->update
!= NULL
)
823 int EVP_MD_meth_set_final(EVP_MD
*md
, int (*final
)(EVP_MD_CTX
*ctx
,
826 if (md
->final
!= NULL
)
832 int EVP_MD_meth_set_copy(EVP_MD
*md
, int (*copy
)(EVP_MD_CTX
*to
,
833 const EVP_MD_CTX
*from
))
835 if (md
->copy
!= NULL
)
841 int EVP_MD_meth_set_cleanup(EVP_MD
*md
, int (*cleanup
)(EVP_MD_CTX
*ctx
))
843 if (md
->cleanup
!= NULL
)
846 md
->cleanup
= cleanup
;
849 int EVP_MD_meth_set_ctrl(EVP_MD
*md
, int (*ctrl
)(EVP_MD_CTX
*ctx
, int cmd
,
852 if (md
->md_ctrl
!= NULL
)
859 int EVP_MD_meth_get_input_blocksize(const EVP_MD
*md
)
861 return md
->block_size
;
863 int EVP_MD_meth_get_result_size(const EVP_MD
*md
)
867 int EVP_MD_meth_get_app_datasize(const EVP_MD
*md
)
871 unsigned long EVP_MD_meth_get_flags(const EVP_MD
*md
)
875 int (*EVP_MD_meth_get_init(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
879 int (*EVP_MD_meth_get_update(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
885 int (*EVP_MD_meth_get_final(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
890 int (*EVP_MD_meth_get_copy(const EVP_MD
*md
))(EVP_MD_CTX
*to
,
891 const EVP_MD_CTX
*from
)
895 int (*EVP_MD_meth_get_cleanup(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
899 int (*EVP_MD_meth_get_ctrl(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
, int cmd
,
905 const EVP_MD
*EVP_MD_CTX_md(const EVP_MD_CTX
*ctx
)
909 return ctx
->reqdigest
;
912 EVP_PKEY_CTX
*EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX
*ctx
)
917 #if !defined(FIPS_MODULE)
918 /* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
919 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX
*ctx
, EVP_PKEY_CTX
*pctx
)
922 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
923 * we have to deal with the cleanup job here.
925 if (!EVP_MD_CTX_test_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
))
926 EVP_PKEY_CTX_free(ctx
->pctx
);
931 /* make sure pctx is not freed when destroying EVP_MD_CTX */
932 EVP_MD_CTX_set_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
);
934 EVP_MD_CTX_clear_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
);
937 #endif /* !defined(FIPS_MODULE) */
939 void *EVP_MD_CTX_md_data(const EVP_MD_CTX
*ctx
)
944 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX
*ctx
))(EVP_MD_CTX
*ctx
,
945 const void *data
, size_t count
)
950 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX
*ctx
,
951 int (*update
) (EVP_MD_CTX
*ctx
,
952 const void *data
, size_t count
))
954 ctx
->update
= update
;
957 void EVP_MD_CTX_set_flags(EVP_MD_CTX
*ctx
, int flags
)
962 void EVP_MD_CTX_clear_flags(EVP_MD_CTX
*ctx
, int flags
)
964 ctx
->flags
&= ~flags
;
967 int EVP_MD_CTX_test_flags(const EVP_MD_CTX
*ctx
, int flags
)
969 return (ctx
->flags
& flags
);
972 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
977 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
979 ctx
->flags
&= ~flags
;
982 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX
*ctx
, int flags
)
984 return (ctx
->flags
& flags
);
987 int EVP_PKEY_CTX_set_group_name(EVP_PKEY_CTX
*ctx
, const char *name
)
989 OSSL_PARAM params
[] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
991 if (ctx
== NULL
|| !EVP_PKEY_CTX_IS_GEN_OP(ctx
)) {
992 ERR_raise(ERR_LIB_EVP
, EVP_R_COMMAND_NOT_SUPPORTED
);
993 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1000 params
[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME
,
1002 return EVP_PKEY_CTX_set_params(ctx
, params
);
1005 int EVP_PKEY_CTX_get_group_name(EVP_PKEY_CTX
*ctx
, char *name
, size_t namelen
)
1007 OSSL_PARAM params
[] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
1008 OSSL_PARAM
*p
= params
;
1010 if (ctx
== NULL
|| !EVP_PKEY_CTX_IS_GEN_OP(ctx
)) {
1011 /* There is no legacy support for this */
1012 ERR_raise(ERR_LIB_EVP
, EVP_R_COMMAND_NOT_SUPPORTED
);
1013 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1020 *p
++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME
,
1022 if (!EVP_PKEY_CTX_get_params(ctx
, params
))