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)
199 j = EVP_CIPHER_CTX_iv_length(c);
200 OPENSSL_assert(j <= sizeof(c->iv));
201 i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
205 #endif /* !defined(FIPS_MODE) */
207 /* Convert the various cipher NIDs and dummies to a proper OID NID */
208 int EVP_CIPHER_type(const EVP_CIPHER *ctx)
211 nid = EVP_CIPHER_nid(ctx);
226 case NID_aes_128_cfb128:
227 case NID_aes_128_cfb8:
228 case NID_aes_128_cfb1:
230 return NID_aes_128_cfb128;
232 case NID_aes_192_cfb128:
233 case NID_aes_192_cfb8:
234 case NID_aes_192_cfb1:
236 return NID_aes_192_cfb128;
238 case NID_aes_256_cfb128:
239 case NID_aes_256_cfb8:
240 case NID_aes_256_cfb1:
242 return NID_aes_256_cfb128;
248 return NID_des_cfb64;
250 case NID_des_ede3_cfb64:
251 case NID_des_ede3_cfb8:
252 case NID_des_ede3_cfb1:
254 return NID_des_cfb64;
261 /* Check it has an OID and it is valid */
262 ASN1_OBJECT *otmp = OBJ_nid2obj(nid);
264 if (OBJ_get0_data(otmp) == NULL)
266 ASN1_OBJECT_free(otmp);
273 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher)
276 size_t v = cipher->block_size;
277 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
279 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, &v);
280 ok = evp_do_ciph_getparams(cipher, params);
282 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
285 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
287 return EVP_CIPHER_block_size(ctx->cipher);
290 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
295 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
296 const unsigned char *in, unsigned int inl)
298 if (ctx->cipher->prov != NULL) {
299 size_t outl = 0; /* ignored */
300 int blocksize = EVP_CIPHER_CTX_block_size(ctx);
302 if (ctx->cipher->ccipher != NULL)
304 ctx->cipher->ccipher(ctx->provctx, out, &outl,
305 inl + (blocksize == 1 ? 0 : blocksize),
310 return ctx->cipher->do_cipher(ctx, out, in, inl);
313 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
318 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
323 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
326 unsigned long v = cipher->flags;
327 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
329 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
330 ok = evp_do_ciph_getparams(cipher, params);
332 return ok != 0 ? v : 0;
335 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
337 return ctx->app_data;
340 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
342 ctx->app_data = data;
345 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
347 return ctx->cipher_data;
350 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
352 void *old_cipher_data;
354 old_cipher_data = ctx->cipher_data;
355 ctx->cipher_data = cipher_data;
357 return old_cipher_data;
360 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
363 size_t v = cipher->iv_len;
364 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
366 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
367 ok = evp_do_ciph_getparams(cipher, params);
369 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
372 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
374 int rv, len = EVP_CIPHER_iv_length(ctx->cipher);
376 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
378 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
379 rv = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
380 if (rv == EVP_CTRL_RET_UNSUPPORTED)
382 return rv != 0 ? (int)v : -1;
383 /* TODO (3.0) Remove legacy support */
385 if ((EVP_CIPHER_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
386 rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
388 return (rv == 1) ? len : -1;
393 int EVP_CIPHER_CTX_tag_length(const EVP_CIPHER_CTX *ctx)
397 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
399 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v);
400 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
401 return ret == 1 ? (int)v : 0;
404 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
410 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
412 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
415 const unsigned char *v = ctx->iv;
416 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
419 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
421 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
423 return ok != 0 ? v : NULL;
426 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
429 unsigned char *v = ctx->iv;
430 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
433 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV, (void **)&v,
435 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
437 return ok != 0 ? v : NULL;
440 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
445 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
448 unsigned int v = (unsigned int)ctx->num;
449 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
451 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &v);
452 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
454 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
457 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
460 unsigned int n = (unsigned int)num;
461 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
463 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &n);
464 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->provctx, params);
471 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
474 size_t v = cipher->key_len;
475 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
477 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
478 ok = evp_do_ciph_getparams(cipher, params);
480 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
483 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
486 size_t v = ctx->key_len;
487 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
489 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
490 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->provctx, params);
492 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
495 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
500 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
502 return ctx->cipher->nid;
505 int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name)
507 return evp_is_a(cipher->prov, cipher->name_id, name);
510 const char *EVP_CIPHER_name(const EVP_CIPHER *cipher)
512 if (cipher->prov != NULL)
513 return evp_first_name(cipher->prov, cipher->name_id);
515 return OBJ_nid2sn(EVP_CIPHER_nid(cipher));
521 const OSSL_PROVIDER *EVP_CIPHER_provider(const EVP_CIPHER *cipher)
526 int EVP_CIPHER_mode(const EVP_CIPHER *cipher)
529 unsigned int v = EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE;
530 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
532 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &v);
533 ok = evp_do_ciph_getparams(cipher, params);
535 return ok != 0 ? (int)v : 0;
538 const char *EVP_MD_name(const EVP_MD *md)
540 if (md->prov != NULL)
541 return evp_first_name(md->prov, md->name_id);
543 return OBJ_nid2sn(EVP_MD_nid(md));
549 const OSSL_PROVIDER *EVP_MD_provider(const EVP_MD *md)
554 int EVP_MD_block_size(const EVP_MD *md)
557 size_t v = md->block_size;
558 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
561 EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
565 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, &v);
566 ok = evp_do_md_getparams(md, params);
568 return ok != 0 ? (int)v : -1;
571 int EVP_MD_type(const EVP_MD *md)
576 int EVP_MD_pkey_type(const EVP_MD *md)
578 return md->pkey_type;
581 int EVP_MD_size(const EVP_MD *md)
584 size_t v = md->md_size;
585 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
588 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
592 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_SIZE, &v);
593 ok = evp_do_md_getparams(md, params);
595 return ok != 0 ? (int)v : -1;
598 unsigned long EVP_MD_flags(const EVP_MD *md)
601 unsigned long v = md->flags;
602 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
604 params[0] = OSSL_PARAM_construct_ulong(OSSL_CIPHER_PARAM_FLAGS, &v);
605 ok = evp_do_md_getparams(md, params);
607 return ok != 0 ? v : 0;
610 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
612 EVP_MD *md = evp_md_new();
616 md->pkey_type = pkey_type;
621 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
626 * Non-legacy EVP_MDs can't be duplicated like this.
627 * Use EVP_MD_up_ref() instead.
629 if (md->prov != NULL)
632 if ((to = EVP_MD_meth_new(md->type, md->pkey_type)) != NULL) {
633 CRYPTO_RWLOCK *lock = to->lock;
635 memcpy(to, md, sizeof(*to));
641 void EVP_MD_meth_free(EVP_MD *md)
645 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
647 if (md->block_size != 0)
650 md->block_size = blocksize;
653 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
655 if (md->md_size != 0)
658 md->md_size = resultsize;
661 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
663 if (md->ctx_size != 0)
666 md->ctx_size = datasize;
669 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
677 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
679 if (md->init != NULL)
685 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
689 if (md->update != NULL)
695 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
698 if (md->final != NULL)
704 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
705 const EVP_MD_CTX *from))
707 if (md->copy != NULL)
713 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
715 if (md->cleanup != NULL)
718 md->cleanup = cleanup;
721 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
724 if (md->md_ctrl != NULL)
731 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
733 return md->block_size;
735 int EVP_MD_meth_get_result_size(const EVP_MD *md)
739 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
743 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
747 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
751 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
757 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
762 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
763 const EVP_MD_CTX *from)
767 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
771 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
777 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
781 return ctx->reqdigest;
784 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
789 #if !defined(FIPS_MODE)
790 /* TODO(3.0): EVP_DigestSign* not yet supported in FIPS module */
791 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
794 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
795 * we have to deal with the cleanup job here.
797 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
798 EVP_PKEY_CTX_free(ctx->pctx);
803 /* make sure pctx is not freed when destroying EVP_MD_CTX */
804 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
806 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
809 #endif /* !defined(FIPS_MODE) */
811 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
816 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
817 const void *data, size_t count)
822 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
823 int (*update) (EVP_MD_CTX *ctx,
824 const void *data, size_t count))
826 ctx->update = update;
829 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
834 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
836 ctx->flags &= ~flags;
839 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
841 return (ctx->flags & flags);
844 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
849 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
851 ctx->flags &= ~flags;
854 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
856 return (ctx->flags & flags);
859 int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
860 void *ctx, int cmd, const char *value)
867 return cb(ctx, cmd, (void *)value, len);
870 int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen),
871 void *ctx, int cmd, const char *hex)
877 bin = OPENSSL_hexstr2buf(hex, &binlen);
880 if (binlen <= INT_MAX)
881 rv = cb(ctx, cmd, bin, binlen);