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) {
301 size_t outl = 0; /* ignored */
302 int blocksize = EVP_CIPHER_CTX_block_size(ctx);
304 if (ctx->cipher->ccipher != NULL)
306 ctx->cipher->ccipher(ctx->provctx, out, &outl,
307 inl + (blocksize == 1 ? 0 : blocksize),
312 return ctx->cipher->do_cipher(ctx, out, in, inl);
315 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
320 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
325 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
328 unsigned long v = cipher->flags;
329 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
331 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
332 ok = evp_do_ciph_getparams(cipher, params);
334 return ok != 0 ? v : 0;
337 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
339 return ctx->app_data;
342 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
344 ctx->app_data = data;
347 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
349 return ctx->cipher_data;
352 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
354 void *old_cipher_data;
356 old_cipher_data = ctx->cipher_data;
357 ctx->cipher_data = cipher_data;
359 return old_cipher_data;
362 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
365 size_t v = cipher->iv_len;
366 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
368 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
369 ok = evp_do_ciph_getparams(cipher, params);
371 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
374 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
376 int rv, len = EVP_CIPHER_iv_length(ctx->cipher);
378 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
380 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
381 rv = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
382 if (rv == EVP_CTRL_RET_UNSUPPORTED)
384 return rv != 0 ? (int)v : -1;
385 /* TODO (3.0) Remove legacy support */
387 if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
388 rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
390 return (rv == 1) ? len : -1;
395 int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX *ctx)
399 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
401 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v);
402 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
403 return ret == 1 ? (int)v : 0;
406 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
409 const unsigned char *v = ctx->oiv;
410 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
413 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV,
414 (void **)&v, sizeof(ctx->oiv));
415 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
417 return ok != 0 ? v : NULL;
421 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
423 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
426 const unsigned char *v = ctx->iv;
427 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
430 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
432 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
434 return ok != 0 ? v : NULL;
437 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
440 unsigned char *v = ctx->iv;
441 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
444 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
446 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
448 return ok != 0 ? v : NULL;
451 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
456 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
459 unsigned int v = (unsigned int)ctx->num;
460 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
462 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &v);
463 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
465 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
468 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
471 unsigned int n = (unsigned int)num;
472 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
474 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &n);
475 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
482 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
485 size_t v = cipher->key_len;
486 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
488 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
489 ok = evp_do_ciph_getparams(cipher, params);
491 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
494 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
497 size_t v = ctx->key_len;
498 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
500 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
501 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
503 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
506 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
511 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
513 return ctx->cipher->nid;
516 int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name)
519 if (cipher->prov == NULL) {
520 int nid = EVP_CIPHER_nid(cipher);
522 return nid == OBJ_sn2nid(name) || nid == OBJ_ln2nid(name);
525 return evp_is_a(cipher->prov, cipher->name_id, name);
528 const char *EVP_CIPHER_name(const EVP_CIPHER *cipher)
530 if (cipher->prov != NULL)
531 return evp_first_name(cipher->prov, cipher->name_id);
533 return OBJ_nid2sn(EVP_CIPHER_nid(cipher));
539 const OSSL_PROVIDER *EVP_CIPHER_provider(const EVP_CIPHER *cipher)
544 int EVP_CIPHER_mode(const EVP_CIPHER *cipher)
547 unsigned int v = EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE;
548 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
550 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &v);
551 ok = evp_do_ciph_getparams(cipher, params);
553 return ok != 0 ? (int)v : 0;
556 const char *EVP_MD_name(const EVP_MD *md)
558 if (md->prov != NULL)
559 return evp_first_name(md->prov, md->name_id);
561 return OBJ_nid2sn(EVP_MD_nid(md));
567 const OSSL_PROVIDER *EVP_MD_provider(const EVP_MD *md)
572 int EVP_MD_block_size(const EVP_MD *md)
575 size_t v = md->block_size;
576 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
579 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
583 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, &v);
584 ok = evp_do_md_getparams(md, params);
586 return ok != 0 ? (int)v : -1;
589 int EVP_MD_type(const EVP_MD *md)
594 int EVP_MD_pkey_type(const EVP_MD *md)
596 return md->pkey_type;
599 int EVP_MD_size(const EVP_MD *md)
602 size_t v = md->md_size;
603 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
606 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
610 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_SIZE, &v);
611 ok = evp_do_md_getparams(md, params);
613 return ok != 0 ? (int)v : -1;
616 unsigned long EVP_MD_flags(const EVP_MD *md)
619 unsigned long v = md->flags;
620 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
622 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
623 ok = evp_do_md_getparams(md, params);
625 return ok != 0 ? v : 0;
628 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
630 EVP_MD *md = evp_md_new();
634 md->pkey_type = pkey_type;
639 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
644 * Non-legacy EVP_MDs can't be duplicated like this.
645 * Use EVP_MD_up_ref() instead.
647 if (md->prov != NULL)
650 if ((to = EVP_MD_meth_new(md->type, md->pkey_type)) != NULL) {
651 CRYPTO_RWLOCK *lock = to->lock;
653 memcpy(to, md, sizeof(*to));
659 void EVP_MD_meth_free(EVP_MD *md)
663 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
665 if (md->block_size != 0)
668 md->block_size = blocksize;
671 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
673 if (md->md_size != 0)
676 md->md_size = resultsize;
679 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
681 if (md->ctx_size != 0)
684 md->ctx_size = datasize;
687 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
695 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
697 if (md->init != NULL)
703 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
707 if (md->update != NULL)
713 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
716 if (md->final != NULL)
722 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
723 const EVP_MD_CTX *from))
725 if (md->copy != NULL)
731 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
733 if (md->cleanup != NULL)
736 md->cleanup = cleanup;
739 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
742 if (md->md_ctrl != NULL)
749 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
751 return md->block_size;
753 int EVP_MD_meth_get_result_size(const EVP_MD *md)
757 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
761 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
765 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
769 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
775 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
780 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
781 const EVP_MD_CTX *from)
785 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
789 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
795 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
799 return ctx->reqdigest;
802 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
807 #if !defined(FIPS_MODE)
808 /* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
809 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
812 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
813 * we have to deal with the cleanup job here.
815 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
816 EVP_PKEY_CTX_free(ctx->pctx);
821 /* make sure pctx is not freed when destroying EVP_MD_CTX */
822 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
824 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
827 #endif /* !defined(FIPS_MODE) */
829 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
834 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
835 const void *data, size_t count)
840 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
841 int (*update) (EVP_MD_CTX *ctx,
842 const void *data, size_t count))
844 ctx->update = update;
847 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
852 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
854 ctx->flags &= ~flags;
857 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
859 return (ctx->flags & flags);
862 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
867 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
869 ctx->flags &= ~flags;
872 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
874 return (ctx->flags & flags);
877 int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
878 void *ctx, int cmd, const char *value)
885 return cb(ctx, cmd, (void *)value, len);
888 int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
889 void *ctx, int cmd, const char *hex)
895 bin = OPENSSL_hexstr2buf(hex, &binlen);
898 if (binlen <= INT_MAX)
899 rv = cb(ctx, cmd, bin, binlen);