2 * Copyright 1995-2020 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 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include <openssl/objects.h>
14 #include <openssl/params.h>
15 #include <openssl/core_names.h>
16 #include <openssl/dh.h>
17 #include "crypto/evp.h"
18 #include "internal/provider.h"
19 #include "evp_local.h"
21 #if !defined(FIPS_MODULE)
22 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
24 int ret
= -1; /* Assume the worst */
25 const EVP_CIPHER
*cipher
= c
->cipher
;
28 * For legacy implementations, we detect custom AlgorithmIdentifier
29 * parameter handling by checking if the function pointer
30 * cipher->set_asn1_parameters is set. We know that this pointer
31 * is NULL for provided implementations.
33 * Otherwise, for any implementation, we check the flag
34 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
35 * default AI parameter extraction.
37 * Otherwise, for provided implementations, we convert |type| to
38 * a DER encoded blob and pass to the implementation in OSSL_PARAM
41 * If none of the above applies, this operation is unsupported.
43 if (cipher
->set_asn1_parameters
!= NULL
) {
44 ret
= cipher
->set_asn1_parameters(c
, type
);
45 } else if ((EVP_CIPHER_flags(cipher
) & EVP_CIPH_FLAG_CUSTOM_ASN1
) == 0) {
46 switch (EVP_CIPHER_mode(cipher
)) {
47 case EVP_CIPH_WRAP_MODE
:
48 if (EVP_CIPHER_is_a(cipher
, SN_id_smime_alg_CMS3DESwrap
))
49 ASN1_TYPE_set(type
, V_ASN1_NULL
, NULL
);
53 case EVP_CIPH_GCM_MODE
:
54 case EVP_CIPH_CCM_MODE
:
55 case EVP_CIPH_XTS_MODE
:
56 case EVP_CIPH_OCB_MODE
:
61 ret
= EVP_CIPHER_set_asn1_iv(c
, type
);
63 } else if (cipher
->prov
!= NULL
) {
64 OSSL_PARAM params
[3], *p
= params
;
65 unsigned char *der
= NULL
, *derp
;
68 * We make two passes, the first to get the appropriate buffer size,
69 * and the second to get the actual value.
71 *p
++ = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_ALG_ID
,
73 *p
= OSSL_PARAM_construct_end();
75 if (!EVP_CIPHER_CTX_get_params(c
, params
))
78 /* ... but, we should get a return size too! */
79 if (OSSL_PARAM_modified(params
)
80 && params
[0].return_size
!= 0
81 && (der
= OPENSSL_malloc(params
[0].return_size
)) != NULL
) {
83 params
[0].data_size
= params
[0].return_size
;
84 OSSL_PARAM_set_all_unmodified(params
);
86 if (EVP_CIPHER_CTX_get_params(c
, params
)
87 && OSSL_PARAM_modified(params
)
88 && d2i_ASN1_TYPE(&type
, (const unsigned char **)&derp
,
89 params
[0].return_size
) != NULL
) {
100 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1
, ASN1_R_UNSUPPORTED_CIPHER
);
102 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1
, EVP_R_CIPHER_PARAMETER_ERROR
);
108 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
110 int ret
= -1; /* Assume the worst */
111 const EVP_CIPHER
*cipher
= c
->cipher
;
114 * For legacy implementations, we detect custom AlgorithmIdentifier
115 * parameter handling by checking if there the function pointer
116 * cipher->get_asn1_parameters is set. We know that this pointer
117 * is NULL for provided implementations.
119 * Otherwise, for any implementation, we check the flag
120 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
121 * default AI parameter creation.
123 * Otherwise, for provided implementations, we get the AI parameter
124 * in DER encoded form from the implementation by requesting the
125 * appropriate OSSL_PARAM and converting the result to a ASN1_TYPE.
127 * If none of the above applies, this operation is unsupported.
129 if (cipher
->get_asn1_parameters
!= NULL
) {
130 ret
= cipher
->get_asn1_parameters(c
, type
);
131 } else if ((EVP_CIPHER_flags(cipher
) & EVP_CIPH_FLAG_CUSTOM_ASN1
) == 0) {
132 switch (EVP_CIPHER_mode(cipher
)) {
133 case EVP_CIPH_WRAP_MODE
:
137 case EVP_CIPH_GCM_MODE
:
138 case EVP_CIPH_CCM_MODE
:
139 case EVP_CIPH_XTS_MODE
:
140 case EVP_CIPH_OCB_MODE
:
145 ret
= EVP_CIPHER_get_asn1_iv(c
, type
);
147 } else if (cipher
->prov
!= NULL
) {
148 OSSL_PARAM params
[3], *p
= params
;
149 unsigned char *der
= NULL
;
152 if ((derl
= i2d_ASN1_TYPE(type
, &der
)) >= 0) {
154 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_ALG_ID
,
156 *p
= OSSL_PARAM_construct_end();
157 if (EVP_CIPHER_CTX_set_params(c
, params
))
166 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM
, EVP_R_UNSUPPORTED_CIPHER
);
168 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM
, EVP_R_CIPHER_PARAMETER_ERROR
);
174 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX
*ctx
, ASN1_TYPE
*type
)
180 unsigned char iv
[EVP_MAX_IV_LENGTH
];
182 l
= EVP_CIPHER_CTX_iv_length(ctx
);
183 if (!ossl_assert(l
<= sizeof(iv
)))
185 i
= ASN1_TYPE_get_octetstring(type
, iv
, l
);
189 if (!EVP_CipherInit_ex(ctx
, NULL
, NULL
, NULL
, iv
, -1))
195 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX
*c
, ASN1_TYPE
*type
)
199 unsigned char *oiv
= NULL
;
202 oiv
= (unsigned char *)EVP_CIPHER_CTX_original_iv(c
);
203 j
= EVP_CIPHER_CTX_iv_length(c
);
204 OPENSSL_assert(j
<= sizeof(c
->iv
));
205 i
= ASN1_TYPE_set_octetstring(type
, oiv
, j
);
209 #endif /* !defined(FIPS_MODULE) */
211 /* Convert the various cipher NIDs and dummies to a proper OID NID */
212 int EVP_CIPHER_type(const EVP_CIPHER
*ctx
)
215 nid
= EVP_CIPHER_nid(ctx
);
230 case NID_aes_128_cfb128
:
231 case NID_aes_128_cfb8
:
232 case NID_aes_128_cfb1
:
234 return NID_aes_128_cfb128
;
236 case NID_aes_192_cfb128
:
237 case NID_aes_192_cfb8
:
238 case NID_aes_192_cfb1
:
240 return NID_aes_192_cfb128
;
242 case NID_aes_256_cfb128
:
243 case NID_aes_256_cfb8
:
244 case NID_aes_256_cfb1
:
246 return NID_aes_256_cfb128
;
252 return NID_des_cfb64
;
254 case NID_des_ede3_cfb64
:
255 case NID_des_ede3_cfb8
:
256 case NID_des_ede3_cfb1
:
258 return NID_des_cfb64
;
265 /* Check it has an OID and it is valid */
266 ASN1_OBJECT
*otmp
= OBJ_nid2obj(nid
);
268 if (OBJ_get0_data(otmp
) == NULL
)
270 ASN1_OBJECT_free(otmp
);
277 int evp_cipher_cache_constants(EVP_CIPHER
*cipher
)
283 unsigned int mode
= 0;
284 unsigned long flags
= 0;
285 OSSL_PARAM params
[6];
287 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE
, &blksz
);
288 params
[1] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN
, &ivlen
);
289 params
[2] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &keylen
);
290 params
[3] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE
, &mode
);
291 params
[4] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS
, &flags
);
292 params
[5] = OSSL_PARAM_construct_end();
293 ok
= evp_do_ciph_getparams(cipher
, params
);
295 /* Provided implementations may have a custom cipher_cipher */
296 if (cipher
->prov
!= NULL
&& cipher
->ccipher
!= NULL
)
297 flags
|= EVP_CIPH_FLAG_CUSTOM_CIPHER
;
298 cipher
->block_size
= blksz
;
299 cipher
->iv_len
= ivlen
;
300 cipher
->key_len
= keylen
;
301 cipher
->flags
= flags
| mode
;
306 int EVP_CIPHER_block_size(const EVP_CIPHER
*cipher
)
308 return cipher
->block_size
;
311 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX
*ctx
)
313 return EVP_CIPHER_block_size(ctx
->cipher
);
316 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER
*e
)
321 int EVP_Cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
322 const unsigned char *in
, unsigned int inl
)
324 if (ctx
->cipher
->prov
!= NULL
) {
326 * If the provided implementation has a ccipher function, we use it,
327 * and translate its return value like this: 0 => -1, 1 => outlen
329 * Otherwise, we call the cupdate function if in != NULL, or cfinal
330 * if in == NULL. Regardless of which, we return what we got.
334 size_t blocksize
= EVP_CIPHER_CTX_block_size(ctx
);
336 if (ctx
->cipher
->ccipher
!= NULL
)
337 ret
= ctx
->cipher
->ccipher(ctx
->provctx
, out
, &outl
,
338 inl
+ (blocksize
== 1 ? 0 : blocksize
),
342 ret
= ctx
->cipher
->cupdate(ctx
->provctx
, out
, &outl
,
343 inl
+ (blocksize
== 1 ? 0 : blocksize
),
346 ret
= ctx
->cipher
->cfinal(ctx
->provctx
, out
, &outl
,
347 blocksize
== 1 ? 0 : blocksize
);
352 return ctx
->cipher
->do_cipher(ctx
, out
, in
, inl
);
355 const EVP_CIPHER
*EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX
*ctx
)
360 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX
*ctx
)
365 unsigned long EVP_CIPHER_flags(const EVP_CIPHER
*cipher
)
367 return cipher
->flags
;
370 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX
*ctx
)
372 return ctx
->app_data
;
375 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX
*ctx
, void *data
)
377 ctx
->app_data
= data
;
380 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX
*ctx
)
382 return ctx
->cipher_data
;
385 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX
*ctx
, void *cipher_data
)
387 void *old_cipher_data
;
389 old_cipher_data
= ctx
->cipher_data
;
390 ctx
->cipher_data
= cipher_data
;
392 return old_cipher_data
;
395 int EVP_CIPHER_iv_length(const EVP_CIPHER
*cipher
)
397 return cipher
->iv_len
;
400 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX
*ctx
)
402 int rv
, len
= EVP_CIPHER_iv_length(ctx
->cipher
);
404 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
406 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN
, &v
);
407 rv
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
408 if (rv
== EVP_CTRL_RET_UNSUPPORTED
)
410 return rv
!= 0 ? (int)v
: -1;
411 /* TODO (3.0) Remove legacy support */
413 if ((EVP_CIPHER_flags(ctx
->cipher
) & EVP_CIPH_CUSTOM_IV_LENGTH
) != 0) {
414 rv
= EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX
*)ctx
, EVP_CTRL_GET_IVLEN
,
416 return (rv
== 1) ? len
: -1;
421 int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX
*ctx
)
425 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
427 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN
, &v
);
428 ret
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
429 return ret
== 1 ? (int)v
: 0;
432 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX
*ctx
)
435 const unsigned char *v
= ctx
->oiv
;
436 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
439 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV
,
440 (void **)&v
, sizeof(ctx
->oiv
));
441 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
443 return ok
!= 0 ? v
: NULL
;
447 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
449 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX
*ctx
)
452 const unsigned char *v
= ctx
->iv
;
453 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
456 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV
, (void **)&v
,
458 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
460 return ok
!= 0 ? v
: NULL
;
463 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX
*ctx
)
466 unsigned char *v
= ctx
->iv
;
467 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
470 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV
, (void **)&v
,
472 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
474 return ok
!= 0 ? v
: NULL
;
477 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX
*ctx
)
482 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX
*ctx
)
485 unsigned int v
= (unsigned int)ctx
->num
;
486 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
488 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM
, &v
);
489 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
491 return ok
!= 0 ? (int)v
: EVP_CTRL_RET_UNSUPPORTED
;
494 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX
*ctx
, int num
)
497 unsigned int n
= (unsigned int)num
;
498 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
500 params
[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM
, &n
);
501 ok
= evp_do_ciph_ctx_setparams(ctx
->cipher
, ctx
->provctx
, params
);
508 int EVP_CIPHER_key_length(const EVP_CIPHER
*cipher
)
510 return cipher
->key_len
;
513 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX
*ctx
)
516 size_t v
= ctx
->key_len
;
517 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
519 params
[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN
, &v
);
520 ok
= evp_do_ciph_ctx_getparams(ctx
->cipher
, ctx
->provctx
, params
);
522 return ok
!= 0 ? (int)v
: EVP_CTRL_RET_UNSUPPORTED
;
525 int EVP_CIPHER_nid(const EVP_CIPHER
*cipher
)
530 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX
*ctx
)
532 return ctx
->cipher
->nid
;
535 int EVP_CIPHER_is_a(const EVP_CIPHER
*cipher
, const char *name
)
537 if (cipher
->prov
!= NULL
)
538 return evp_is_a(cipher
->prov
, cipher
->name_id
, NULL
, name
);
539 return evp_is_a(NULL
, 0, EVP_CIPHER_name(cipher
), name
);
542 int EVP_CIPHER_number(const EVP_CIPHER
*cipher
)
544 return cipher
->name_id
;
547 const char *EVP_CIPHER_name(const EVP_CIPHER
*cipher
)
549 if (cipher
->prov
!= NULL
)
550 return evp_first_name(cipher
->prov
, cipher
->name_id
);
552 return OBJ_nid2sn(EVP_CIPHER_nid(cipher
));
558 void EVP_CIPHER_names_do_all(const EVP_CIPHER
*cipher
,
559 void (*fn
)(const char *name
, void *data
),
562 if (cipher
->prov
!= NULL
)
563 evp_names_do_all(cipher
->prov
, cipher
->name_id
, fn
, data
);
566 const OSSL_PROVIDER
*EVP_CIPHER_provider(const EVP_CIPHER
*cipher
)
571 int EVP_CIPHER_mode(const EVP_CIPHER
*cipher
)
573 return EVP_CIPHER_flags(cipher
) & EVP_CIPH_MODE
;
576 int EVP_MD_is_a(const EVP_MD
*md
, const char *name
)
578 if (md
->prov
!= NULL
)
579 return evp_is_a(md
->prov
, md
->name_id
, NULL
, name
);
580 return evp_is_a(NULL
, 0, EVP_MD_name(md
), name
);
583 int EVP_MD_number(const EVP_MD
*md
)
588 const char *EVP_MD_name(const EVP_MD
*md
)
590 if (md
->prov
!= NULL
)
591 return evp_first_name(md
->prov
, md
->name_id
);
593 return OBJ_nid2sn(EVP_MD_nid(md
));
599 void EVP_MD_names_do_all(const EVP_MD
*md
,
600 void (*fn
)(const char *name
, void *data
),
603 if (md
->prov
!= NULL
)
604 evp_names_do_all(md
->prov
, md
->name_id
, fn
, data
);
607 const OSSL_PROVIDER
*EVP_MD_provider(const EVP_MD
*md
)
612 int EVP_MD_block_size(const EVP_MD
*md
)
615 size_t v
= md
->block_size
;
616 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
619 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE
, EVP_R_MESSAGE_DIGEST_IS_NULL
);
623 params
[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE
, &v
);
624 ok
= evp_do_md_getparams(md
, params
);
626 return ok
!= 0 ? (int)v
: -1;
629 int EVP_MD_type(const EVP_MD
*md
)
634 int EVP_MD_pkey_type(const EVP_MD
*md
)
636 return md
->pkey_type
;
639 int EVP_MD_size(const EVP_MD
*md
)
642 size_t v
= md
->md_size
;
643 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
646 EVPerr(EVP_F_EVP_MD_SIZE
, EVP_R_MESSAGE_DIGEST_IS_NULL
);
650 params
[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_SIZE
, &v
);
651 ok
= evp_do_md_getparams(md
, params
);
653 return ok
!= 0 ? (int)v
: -1;
656 unsigned long EVP_MD_flags(const EVP_MD
*md
)
659 unsigned long v
= md
->flags
;
660 OSSL_PARAM params
[2] = { OSSL_PARAM_END
, OSSL_PARAM_END
};
662 params
[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS
, &v
);
663 ok
= evp_do_md_getparams(md
, params
);
665 return ok
!= 0 ? v
: 0;
668 EVP_MD
*EVP_MD_meth_new(int md_type
, int pkey_type
)
670 EVP_MD
*md
= evp_md_new();
674 md
->pkey_type
= pkey_type
;
679 EVP_MD
*EVP_MD_meth_dup(const EVP_MD
*md
)
684 * Non-legacy EVP_MDs can't be duplicated like this.
685 * Use EVP_MD_up_ref() instead.
687 if (md
->prov
!= NULL
)
690 if ((to
= EVP_MD_meth_new(md
->type
, md
->pkey_type
)) != NULL
) {
691 CRYPTO_RWLOCK
*lock
= to
->lock
;
693 memcpy(to
, md
, sizeof(*to
));
699 void EVP_MD_meth_free(EVP_MD
*md
)
703 int EVP_MD_meth_set_input_blocksize(EVP_MD
*md
, int blocksize
)
705 if (md
->block_size
!= 0)
708 md
->block_size
= blocksize
;
711 int EVP_MD_meth_set_result_size(EVP_MD
*md
, int resultsize
)
713 if (md
->md_size
!= 0)
716 md
->md_size
= resultsize
;
719 int EVP_MD_meth_set_app_datasize(EVP_MD
*md
, int datasize
)
721 if (md
->ctx_size
!= 0)
724 md
->ctx_size
= datasize
;
727 int EVP_MD_meth_set_flags(EVP_MD
*md
, unsigned long flags
)
735 int EVP_MD_meth_set_init(EVP_MD
*md
, int (*init
)(EVP_MD_CTX
*ctx
))
737 if (md
->init
!= NULL
)
743 int EVP_MD_meth_set_update(EVP_MD
*md
, int (*update
)(EVP_MD_CTX
*ctx
,
747 if (md
->update
!= NULL
)
753 int EVP_MD_meth_set_final(EVP_MD
*md
, int (*final
)(EVP_MD_CTX
*ctx
,
756 if (md
->final
!= NULL
)
762 int EVP_MD_meth_set_copy(EVP_MD
*md
, int (*copy
)(EVP_MD_CTX
*to
,
763 const EVP_MD_CTX
*from
))
765 if (md
->copy
!= NULL
)
771 int EVP_MD_meth_set_cleanup(EVP_MD
*md
, int (*cleanup
)(EVP_MD_CTX
*ctx
))
773 if (md
->cleanup
!= NULL
)
776 md
->cleanup
= cleanup
;
779 int EVP_MD_meth_set_ctrl(EVP_MD
*md
, int (*ctrl
)(EVP_MD_CTX
*ctx
, int cmd
,
782 if (md
->md_ctrl
!= NULL
)
789 int EVP_MD_meth_get_input_blocksize(const EVP_MD
*md
)
791 return md
->block_size
;
793 int EVP_MD_meth_get_result_size(const EVP_MD
*md
)
797 int EVP_MD_meth_get_app_datasize(const EVP_MD
*md
)
801 unsigned long EVP_MD_meth_get_flags(const EVP_MD
*md
)
805 int (*EVP_MD_meth_get_init(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
809 int (*EVP_MD_meth_get_update(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
815 int (*EVP_MD_meth_get_final(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
820 int (*EVP_MD_meth_get_copy(const EVP_MD
*md
))(EVP_MD_CTX
*to
,
821 const EVP_MD_CTX
*from
)
825 int (*EVP_MD_meth_get_cleanup(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
829 int (*EVP_MD_meth_get_ctrl(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
, int cmd
,
835 const EVP_MD
*EVP_MD_CTX_md(const EVP_MD_CTX
*ctx
)
839 return ctx
->reqdigest
;
842 EVP_PKEY_CTX
*EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX
*ctx
)
847 #if !defined(FIPS_MODULE)
848 /* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
849 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX
*ctx
, EVP_PKEY_CTX
*pctx
)
852 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
853 * we have to deal with the cleanup job here.
855 if (!EVP_MD_CTX_test_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
))
856 EVP_PKEY_CTX_free(ctx
->pctx
);
861 /* make sure pctx is not freed when destroying EVP_MD_CTX */
862 EVP_MD_CTX_set_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
);
864 EVP_MD_CTX_clear_flags(ctx
, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX
);
867 #endif /* !defined(FIPS_MODULE) */
869 void *EVP_MD_CTX_md_data(const EVP_MD_CTX
*ctx
)
874 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX
*ctx
))(EVP_MD_CTX
*ctx
,
875 const void *data
, size_t count
)
880 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX
*ctx
,
881 int (*update
) (EVP_MD_CTX
*ctx
,
882 const void *data
, size_t count
))
884 ctx
->update
= update
;
887 void EVP_MD_CTX_set_flags(EVP_MD_CTX
*ctx
, int flags
)
892 void EVP_MD_CTX_clear_flags(EVP_MD_CTX
*ctx
, int flags
)
894 ctx
->flags
&= ~flags
;
897 int EVP_MD_CTX_test_flags(const EVP_MD_CTX
*ctx
, int flags
)
899 return (ctx
->flags
& flags
);
902 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
907 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
909 ctx
->flags
&= ~flags
;
912 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX
*ctx
, int flags
)
914 return (ctx
->flags
& flags
);
917 int EVP_str2ctrl(int (*cb
)(void *ctx
, int cmd
, void *buf
, size_t buflen
),
918 void *ctx
, int cmd
, const char *value
)
925 return cb(ctx
, cmd
, (void *)value
, len
);
928 int EVP_hex2ctrl(int (*cb
)(void *ctx
, int cmd
, void *buf
, size_t buflen
),
929 void *ctx
, int cmd
, const char *hex
)
935 bin
= OPENSSL_hexstr2buf(hex
, &binlen
);
938 if (binlen
<= INT_MAX
)
939 rv
= cb(ctx
, cmd
, bin
, binlen
);