2 * Copyright 1995-2018 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_MODE)
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 (params[0].return_size != 0
80 && (der = OPENSSL_malloc(params[0].return_size)) != NULL) {
82 params[0].data_size = params[0].return_size;
83 params[0].return_size = 0;
85 if (EVP_CIPHER_CTX_get_params(c, params)
86 && d2i_ASN1_TYPE(&type, (const unsigned char **)&derp,
87 params[0].return_size) != NULL) {
98 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ASN1_R_UNSUPPORTED_CIPHER);
100 EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, EVP_R_CIPHER_PARAMETER_ERROR);
106 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
108 int ret = -1; /* Assume the worst */
109 const EVP_CIPHER *cipher = c->cipher;
112 * For legacy implementations, we detect custom AlgorithmIdentifier
113 * parameter handling by checking if there the function pointer
114 * cipher->get_asn1_parameters is set. We know that this pointer
115 * is NULL for provided implementations.
117 * Otherwise, for any implementation, we check the flag
118 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
119 * default AI parameter creation.
121 * Otherwise, for provided implementations, we get the AI parameter
122 * in DER encoded form from the implementation by requesting the
123 * appropriate OSSL_PARAM and converting the result to a ASN1_TYPE.
125 * If none of the above applies, this operation is unsupported.
127 if (cipher->get_asn1_parameters != NULL) {
128 ret = cipher->get_asn1_parameters(c, type);
129 } else if ((EVP_CIPHER_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) {
130 switch (EVP_CIPHER_mode(cipher)) {
131 case EVP_CIPH_WRAP_MODE:
135 case EVP_CIPH_GCM_MODE:
136 case EVP_CIPH_CCM_MODE:
137 case EVP_CIPH_XTS_MODE:
138 case EVP_CIPH_OCB_MODE:
143 ret = EVP_CIPHER_get_asn1_iv(c, type);
145 } else if (cipher->prov != NULL) {
146 OSSL_PARAM params[3], *p = params;
147 unsigned char *der = NULL;
150 if ((derl = i2d_ASN1_TYPE(type, &der)) >= 0) {
152 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_ALG_ID,
154 *p = OSSL_PARAM_construct_end();
155 if (EVP_CIPHER_CTX_set_params(c, params))
164 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, EVP_R_UNSUPPORTED_CIPHER);
166 EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, EVP_R_CIPHER_PARAMETER_ERROR);
172 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *ctx, ASN1_TYPE *type)
178 unsigned char iv[EVP_MAX_IV_LENGTH];
180 l = EVP_CIPHER_CTX_iv_length(ctx);
181 if (!ossl_assert(l <= sizeof(iv)))
183 i = ASN1_TYPE_get_octetstring(type, iv, l);
187 if (!EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv, -1))
193 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
197 unsigned char *oiv = NULL;
200 oiv = (unsigned char *)EVP_CIPHER_CTX_original_iv(c);
201 j = EVP_CIPHER_CTX_iv_length(c);
202 OPENSSL_assert(j <= sizeof(c->iv));
203 i = ASN1_TYPE_set_octetstring(type, oiv, j);
207 #endif /* !defined(FIPS_MODE) */
209 /* Convert the various cipher NIDs and dummies to a proper OID NID */
210 int EVP_CIPHER_type(const EVP_CIPHER *ctx)
213 nid = EVP_CIPHER_nid(ctx);
228 case NID_aes_128_cfb128:
229 case NID_aes_128_cfb8:
230 case NID_aes_128_cfb1:
232 return NID_aes_128_cfb128;
234 case NID_aes_192_cfb128:
235 case NID_aes_192_cfb8:
236 case NID_aes_192_cfb1:
238 return NID_aes_192_cfb128;
240 case NID_aes_256_cfb128:
241 case NID_aes_256_cfb8:
242 case NID_aes_256_cfb1:
244 return NID_aes_256_cfb128;
250 return NID_des_cfb64;
252 case NID_des_ede3_cfb64:
253 case NID_des_ede3_cfb8:
254 case NID_des_ede3_cfb1:
256 return NID_des_cfb64;
263 /* Check it has an OID and it is valid */
264 ASN1_OBJECT *otmp = OBJ_nid2obj(nid);
266 if (OBJ_get0_data(otmp) == NULL)
268 ASN1_OBJECT_free(otmp);
275 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher)
278 size_t v = cipher->block_size;
279 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
281 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, &v);
282 ok = evp_do_ciph_getparams(cipher, params);
284 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
287 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
289 return EVP_CIPHER_block_size(ctx->cipher);
292 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
297 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
298 const unsigned char *in, unsigned int inl)
300 if (ctx->cipher->prov != NULL) {
302 * If the provided implementation has a ccipher function, we use it,
303 * and translate its return value like this: 0 => -1, 1 => outlen
305 * Otherwise, we call the cupdate function if in != NULL, or cfinal
306 * if in == NULL. Regardless of which, we return what we got.
310 size_t blocksize = EVP_CIPHER_CTX_block_size(ctx);
312 if (ctx->cipher->ccipher != NULL)
313 ret = ctx->cipher->ccipher(ctx->provctx, out, &outl,
314 inl + (blocksize == 1 ? 0 : blocksize),
318 ret = ctx->cipher->cupdate(ctx->provctx, out, &outl,
319 inl + (blocksize == 1 ? 0 : blocksize),
322 ret = ctx->cipher->cfinal(ctx->provctx, out, &outl,
323 blocksize == 1 ? 0 : blocksize);
328 return ctx->cipher->do_cipher(ctx, out, in, inl);
331 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
336 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
341 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
344 unsigned long v = cipher->flags;
345 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
347 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
348 ok = evp_do_ciph_getparams(cipher, params);
350 /* Provided implementations may have a custom cipher_cipher */
351 if (cipher->prov != NULL && cipher->ccipher != NULL)
352 v |= EVP_CIPH_FLAG_CUSTOM_CIPHER;
354 return ok != 0 ? v : 0;
357 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
359 return ctx->app_data;
362 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
364 ctx->app_data = data;
367 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
369 return ctx->cipher_data;
372 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
374 void *old_cipher_data;
376 old_cipher_data = ctx->cipher_data;
377 ctx->cipher_data = cipher_data;
379 return old_cipher_data;
382 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
385 size_t v = cipher->iv_len;
386 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
388 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
389 ok = evp_do_ciph_getparams(cipher, params);
391 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
394 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
396 int rv, len = EVP_CIPHER_iv_length(ctx->cipher);
398 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
400 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
401 rv = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
402 if (rv == EVP_CTRL_RET_UNSUPPORTED)
404 return rv != 0 ? (int)v : -1;
405 /* TODO (3.0) Remove legacy support */
407 if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
408 rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
410 return (rv == 1) ? len : -1;
415 int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX *ctx)
419 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
421 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v);
422 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
423 return ret == 1 ? (int)v : 0;
426 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
429 const unsigned char *v = ctx->oiv;
430 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
433 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV,
434 (void **)&v, sizeof(ctx->oiv));
435 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
437 return ok != 0 ? v : NULL;
441 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
443 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
446 const unsigned char *v = ctx->iv;
447 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
450 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
452 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
454 return ok != 0 ? v : NULL;
457 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
460 unsigned char *v = ctx->iv;
461 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
464 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
466 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
468 return ok != 0 ? v : NULL;
471 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
476 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
479 unsigned int v = (unsigned int)ctx->num;
480 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
482 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &v);
483 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
485 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
488 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
491 unsigned int n = (unsigned int)num;
492 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
494 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &n);
495 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
502 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
505 size_t v = cipher->key_len;
506 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
508 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
509 ok = evp_do_ciph_getparams(cipher, params);
511 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
514 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
517 size_t v = ctx->key_len;
518 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
520 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
521 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
523 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
526 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
531 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
533 return ctx->cipher->nid;
536 int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name)
539 if (cipher->prov == NULL) {
540 int nid = EVP_CIPHER_nid(cipher);
542 return nid == OBJ_sn2nid(name) || nid == OBJ_ln2nid(name);
545 return evp_is_a(cipher->prov, cipher->name_id, name);
548 const char *EVP_CIPHER_name(const EVP_CIPHER *cipher)
550 if (cipher->prov != NULL)
551 return evp_first_name(cipher->prov, cipher->name_id);
553 return OBJ_nid2sn(EVP_CIPHER_nid(cipher));
559 const OSSL_PROVIDER *EVP_CIPHER_provider(const EVP_CIPHER *cipher)
564 int EVP_CIPHER_mode(const EVP_CIPHER *cipher)
567 unsigned int v = EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE;
568 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
570 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &v);
571 ok = evp_do_ciph_getparams(cipher, params);
573 return ok != 0 ? (int)v : 0;
576 const char *EVP_MD_name(const EVP_MD *md)
578 if (md->prov != NULL)
579 return evp_first_name(md->prov, md->name_id);
581 return OBJ_nid2sn(EVP_MD_nid(md));
587 const OSSL_PROVIDER *EVP_MD_provider(const EVP_MD *md)
592 int EVP_MD_block_size(const EVP_MD *md)
595 size_t v = md->block_size;
596 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
599 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
603 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, &v);
604 ok = evp_do_md_getparams(md, params);
606 return ok != 0 ? (int)v : -1;
609 int EVP_MD_type(const EVP_MD *md)
614 int EVP_MD_pkey_type(const EVP_MD *md)
616 return md->pkey_type;
619 int EVP_MD_size(const EVP_MD *md)
622 size_t v = md->md_size;
623 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
626 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
630 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_SIZE, &v);
631 ok = evp_do_md_getparams(md, params);
633 return ok != 0 ? (int)v : -1;
636 unsigned long EVP_MD_flags(const EVP_MD *md)
639 unsigned long v = md->flags;
640 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
642 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
643 ok = evp_do_md_getparams(md, params);
645 return ok != 0 ? v : 0;
648 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
650 EVP_MD *md = evp_md_new();
654 md->pkey_type = pkey_type;
659 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
664 * Non-legacy EVP_MDs can't be duplicated like this.
665 * Use EVP_MD_up_ref() instead.
667 if (md->prov != NULL)
670 if ((to = EVP_MD_meth_new(md->type, md->pkey_type)) != NULL) {
671 CRYPTO_RWLOCK *lock = to->lock;
673 memcpy(to, md, sizeof(*to));
679 void EVP_MD_meth_free(EVP_MD *md)
683 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
685 if (md->block_size != 0)
688 md->block_size = blocksize;
691 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
693 if (md->md_size != 0)
696 md->md_size = resultsize;
699 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
701 if (md->ctx_size != 0)
704 md->ctx_size = datasize;
707 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
715 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
717 if (md->init != NULL)
723 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
727 if (md->update != NULL)
733 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
736 if (md->final != NULL)
742 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
743 const EVP_MD_CTX *from))
745 if (md->copy != NULL)
751 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
753 if (md->cleanup != NULL)
756 md->cleanup = cleanup;
759 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
762 if (md->md_ctrl != NULL)
769 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
771 return md->block_size;
773 int EVP_MD_meth_get_result_size(const EVP_MD *md)
777 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
781 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
785 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
789 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
795 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
800 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
801 const EVP_MD_CTX *from)
805 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
809 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
815 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
819 return ctx->reqdigest;
822 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
827 #if !defined(FIPS_MODE)
828 /* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
829 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
832 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
833 * we have to deal with the cleanup job here.
835 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
836 EVP_PKEY_CTX_free(ctx->pctx);
841 /* make sure pctx is not freed when destroying EVP_MD_CTX */
842 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
844 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
847 #endif /* !defined(FIPS_MODE) */
849 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
854 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
855 const void *data, size_t count)
860 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
861 int (*update) (EVP_MD_CTX *ctx,
862 const void *data, size_t count))
864 ctx->update = update;
867 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
872 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
874 ctx->flags &= ~flags;
877 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
879 return (ctx->flags & flags);
882 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
887 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
889 ctx->flags &= ~flags;
892 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
894 return (ctx->flags & flags);
897 int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
898 void *ctx, int cmd, const char *value)
905 return cb(ctx, cmd, (void *)value, len);
908 int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
909 void *ctx, int cmd, const char *hex)
915 bin = OPENSSL_hexstr2buf(hex, &binlen);
918 if (binlen <= INT_MAX)
919 rv = cb(ctx, cmd, bin, binlen);