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);