2 * Copyright 1995-2021 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 * EVP _meth_ APIs are deprecated for public use, but still ok for
14 #include "internal/deprecated.h"
18 #include "e_os.h" /* strcasecmp */
19 #include "internal/cryptlib.h"
20 #include <openssl/evp.h>
21 #include <openssl/objects.h>
22 #include <openssl/params.h>
23 #include <openssl/core_names.h>
24 #include <openssl/rsa.h>
25 #include <openssl/dh.h>
26 #include <openssl/ec.h>
27 #include "crypto/evp.h"
28 #include "crypto/asn1.h"
29 #include "internal/provider.h"
30 #include "evp_local.h"
32 #if !defined(FIPS_MODULE)
34 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
36 return evp_cipher_param_to_asn1_ex(c, type, NULL);
39 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
41 return evp_cipher_asn1_to_param_ex(c, type, NULL);
44 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *ctx, ASN1_TYPE *type)
50 unsigned char iv[EVP_MAX_IV_LENGTH];
52 l = EVP_CIPHER_CTX_get_iv_length(ctx);
53 if (!ossl_assert(l <= sizeof(iv)))
55 i = ASN1_TYPE_get_octetstring(type, iv, l);
59 if (!EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv, -1))
65 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
69 unsigned char *oiv = NULL;
72 oiv = (unsigned char *)EVP_CIPHER_CTX_original_iv(c);
73 j = EVP_CIPHER_CTX_get_iv_length(c);
74 OPENSSL_assert(j <= sizeof(c->iv));
75 i = ASN1_TYPE_set_octetstring(type, oiv, j);
80 int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
81 evp_cipher_aead_asn1_params *asn1_params)
83 int ret = -1; /* Assume the worst */
84 const EVP_CIPHER *cipher = c->cipher;
87 * For legacy implementations, we detect custom AlgorithmIdentifier
88 * parameter handling by checking if the function pointer
89 * cipher->set_asn1_parameters is set. We know that this pointer
90 * is NULL for provided implementations.
92 * Otherwise, for any implementation, we check the flag
93 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
94 * default AI parameter extraction.
96 * Otherwise, for provided implementations, we convert |type| to
97 * a DER encoded blob and pass to the implementation in OSSL_PARAM
100 * If none of the above applies, this operation is unsupported.
102 if (cipher->set_asn1_parameters != NULL) {
103 ret = cipher->set_asn1_parameters(c, type);
104 } else if ((EVP_CIPHER_get_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) {
105 switch (EVP_CIPHER_get_mode(cipher)) {
106 case EVP_CIPH_WRAP_MODE:
107 if (EVP_CIPHER_is_a(cipher, SN_id_smime_alg_CMS3DESwrap))
108 ASN1_TYPE_set(type, V_ASN1_NULL, NULL);
112 case EVP_CIPH_GCM_MODE:
113 ret = evp_cipher_set_asn1_aead_params(c, type, asn1_params);
116 case EVP_CIPH_CCM_MODE:
117 case EVP_CIPH_XTS_MODE:
118 case EVP_CIPH_OCB_MODE:
123 ret = EVP_CIPHER_set_asn1_iv(c, type);
125 } else if (cipher->prov != NULL) {
126 OSSL_PARAM params[3], *p = params;
127 unsigned char *der = NULL, *derp;
130 * We make two passes, the first to get the appropriate buffer size,
131 * and the second to get the actual value.
133 *p++ = OSSL_PARAM_construct_octet_string(
134 OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS,
136 *p = OSSL_PARAM_construct_end();
138 if (!EVP_CIPHER_CTX_get_params(c, params))
141 /* ... but, we should get a return size too! */
142 if (OSSL_PARAM_modified(params)
143 && params[0].return_size != 0
144 && (der = OPENSSL_malloc(params[0].return_size)) != NULL) {
145 params[0].data = der;
146 params[0].data_size = params[0].return_size;
147 OSSL_PARAM_set_all_unmodified(params);
149 if (EVP_CIPHER_CTX_get_params(c, params)
150 && OSSL_PARAM_modified(params)
151 && d2i_ASN1_TYPE(&type, (const unsigned char **)&derp,
152 params[0].return_size) != NULL) {
163 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
165 ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR);
171 int evp_cipher_asn1_to_param_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
172 evp_cipher_aead_asn1_params *asn1_params)
174 int ret = -1; /* Assume the worst */
175 const EVP_CIPHER *cipher = c->cipher;
178 * For legacy implementations, we detect custom AlgorithmIdentifier
179 * parameter handling by checking if there the function pointer
180 * cipher->get_asn1_parameters is set. We know that this pointer
181 * is NULL for provided implementations.
183 * Otherwise, for any implementation, we check the flag
184 * EVP_CIPH_FLAG_CUSTOM_ASN1. If it isn't set, we apply
185 * default AI parameter creation.
187 * Otherwise, for provided implementations, we get the AI parameter
188 * in DER encoded form from the implementation by requesting the
189 * appropriate OSSL_PARAM and converting the result to a ASN1_TYPE.
191 * If none of the above applies, this operation is unsupported.
193 if (cipher->get_asn1_parameters != NULL) {
194 ret = cipher->get_asn1_parameters(c, type);
195 } else if ((EVP_CIPHER_get_flags(cipher) & EVP_CIPH_FLAG_CUSTOM_ASN1) == 0) {
196 switch (EVP_CIPHER_get_mode(cipher)) {
197 case EVP_CIPH_WRAP_MODE:
201 case EVP_CIPH_GCM_MODE:
202 ret = evp_cipher_get_asn1_aead_params(c, type, asn1_params);
205 case EVP_CIPH_CCM_MODE:
206 case EVP_CIPH_XTS_MODE:
207 case EVP_CIPH_OCB_MODE:
212 ret = EVP_CIPHER_get_asn1_iv(c, type);
214 } else if (cipher->prov != NULL) {
215 OSSL_PARAM params[3], *p = params;
216 unsigned char *der = NULL;
219 if ((derl = i2d_ASN1_TYPE(type, &der)) >= 0) {
221 OSSL_PARAM_construct_octet_string(
222 OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS,
224 *p = OSSL_PARAM_construct_end();
225 if (EVP_CIPHER_CTX_set_params(c, params))
234 ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_CIPHER);
236 ERR_raise(ERR_LIB_EVP, EVP_R_CIPHER_PARAMETER_ERROR);
242 int evp_cipher_get_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
243 evp_cipher_aead_asn1_params *asn1_params)
247 unsigned char iv[EVP_MAX_IV_LENGTH];
249 if (type == NULL || asn1_params == NULL)
252 i = ossl_asn1_type_get_octetstring_int(type, &tl, NULL, EVP_MAX_IV_LENGTH);
255 ossl_asn1_type_get_octetstring_int(type, &tl, iv, i);
257 memcpy(asn1_params->iv, iv, i);
258 asn1_params->iv_len = i;
263 int evp_cipher_set_asn1_aead_params(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
264 evp_cipher_aead_asn1_params *asn1_params)
266 if (type == NULL || asn1_params == NULL)
269 return ossl_asn1_type_set_octetstring_int(type, asn1_params->tag_len,
271 asn1_params->iv_len);
273 #endif /* !defined(FIPS_MODULE) */
275 /* Convert the various cipher NIDs and dummies to a proper OID NID */
276 int EVP_CIPHER_get_type(const EVP_CIPHER *cipher)
279 nid = EVP_CIPHER_get_nid(cipher);
294 case NID_aes_128_cfb128:
295 case NID_aes_128_cfb8:
296 case NID_aes_128_cfb1:
298 return NID_aes_128_cfb128;
300 case NID_aes_192_cfb128:
301 case NID_aes_192_cfb8:
302 case NID_aes_192_cfb1:
304 return NID_aes_192_cfb128;
306 case NID_aes_256_cfb128:
307 case NID_aes_256_cfb8:
308 case NID_aes_256_cfb1:
310 return NID_aes_256_cfb128;
316 return NID_des_cfb64;
318 case NID_des_ede3_cfb64:
319 case NID_des_ede3_cfb8:
320 case NID_des_ede3_cfb1:
322 return NID_des_cfb64;
329 /* Check it has an OID and it is valid */
330 ASN1_OBJECT *otmp = OBJ_nid2obj(nid);
332 if (OBJ_get0_data(otmp) == NULL)
334 ASN1_OBJECT_free(otmp);
341 int evp_cipher_cache_constants(EVP_CIPHER *cipher)
343 int ok, aead = 0, custom_iv = 0, cts = 0, multiblock = 0;
347 unsigned int mode = 0;
348 OSSL_PARAM params[9];
350 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, &blksz);
351 params[1] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &ivlen);
352 params[2] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &keylen);
353 params[3] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_MODE, &mode);
354 params[4] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_AEAD, &aead);
355 params[5] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CUSTOM_IV,
357 params[6] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_CTS, &cts);
358 params[7] = OSSL_PARAM_construct_int(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK,
360 params[8] = OSSL_PARAM_construct_end();
361 ok = evp_do_ciph_getparams(cipher, params) > 0;
363 cipher->block_size = blksz;
364 cipher->iv_len = ivlen;
365 cipher->key_len = keylen;
366 cipher->flags = mode;
368 cipher->flags |= EVP_CIPH_FLAG_AEAD_CIPHER;
370 cipher->flags |= EVP_CIPH_CUSTOM_IV;
372 cipher->flags |= EVP_CIPH_FLAG_CTS;
374 cipher->flags |= EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK;
375 if (cipher->ccipher != NULL)
376 cipher->flags |= EVP_CIPH_FLAG_CUSTOM_CIPHER;
377 if (OSSL_PARAM_locate_const(EVP_CIPHER_gettable_ctx_params(cipher),
378 OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS))
379 cipher->flags |= EVP_CIPH_FLAG_CUSTOM_ASN1;
384 int EVP_CIPHER_get_block_size(const EVP_CIPHER *cipher)
386 return cipher->block_size;
389 int EVP_CIPHER_CTX_get_block_size(const EVP_CIPHER_CTX *ctx)
391 return EVP_CIPHER_get_block_size(ctx->cipher);
394 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
399 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
400 const unsigned char *in, unsigned int inl)
402 if (ctx->cipher->prov != NULL) {
404 * If the provided implementation has a ccipher function, we use it,
405 * and translate its return value like this: 0 => -1, 1 => outlen
407 * Otherwise, we call the cupdate function if in != NULL, or cfinal
408 * if in == NULL. Regardless of which, we return what we got.
412 size_t blocksize = EVP_CIPHER_CTX_get_block_size(ctx);
414 if (ctx->cipher->ccipher != NULL)
415 ret = ctx->cipher->ccipher(ctx->algctx, out, &outl,
416 inl + (blocksize == 1 ? 0 : blocksize),
420 ret = ctx->cipher->cupdate(ctx->algctx, out, &outl,
421 inl + (blocksize == 1 ? 0 : blocksize),
424 ret = ctx->cipher->cfinal(ctx->algctx, out, &outl,
425 blocksize == 1 ? 0 : blocksize);
430 return ctx->cipher->do_cipher(ctx, out, in, inl);
433 #ifndef OPENSSL_NO_DEPRECATED_3_0
434 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
442 const EVP_CIPHER *EVP_CIPHER_CTX_get0_cipher(const EVP_CIPHER_CTX *ctx)
449 EVP_CIPHER *EVP_CIPHER_CTX_get1_cipher(EVP_CIPHER_CTX *ctx)
455 cipher = (EVP_CIPHER *)ctx->cipher;
456 if (!EVP_CIPHER_up_ref(cipher))
461 int EVP_CIPHER_CTX_is_encrypting(const EVP_CIPHER_CTX *ctx)
466 unsigned long EVP_CIPHER_get_flags(const EVP_CIPHER *cipher)
468 return cipher->flags;
471 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
473 return ctx->app_data;
476 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
478 ctx->app_data = data;
481 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
483 return ctx->cipher_data;
486 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
488 void *old_cipher_data;
490 old_cipher_data = ctx->cipher_data;
491 ctx->cipher_data = cipher_data;
493 return old_cipher_data;
496 int EVP_CIPHER_get_iv_length(const EVP_CIPHER *cipher)
498 return cipher->iv_len;
501 int EVP_CIPHER_CTX_get_iv_length(const EVP_CIPHER_CTX *ctx)
503 int rv, len = EVP_CIPHER_get_iv_length(ctx->cipher);
505 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
507 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_IVLEN, &v);
508 rv = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
509 if (rv == EVP_CTRL_RET_UNSUPPORTED)
511 return rv != 0 ? (int)v : -1;
512 /* Code below to be removed when legacy support is dropped. */
514 if ((EVP_CIPHER_get_flags(ctx->cipher) & EVP_CIPH_CUSTOM_IV_LENGTH) != 0) {
515 rv = EVP_CIPHER_CTX_ctrl((EVP_CIPHER_CTX *)ctx, EVP_CTRL_GET_IVLEN,
517 return (rv == 1) ? len : -1;
522 int EVP_CIPHER_CTX_get_tag_length(const EVP_CIPHER_CTX *ctx)
526 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
528 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, &v);
529 ret = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
530 return ret == 1 ? (int)v : 0;
533 #ifndef OPENSSL_NO_DEPRECATED_3_0
534 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
537 const unsigned char *v = ctx->oiv;
538 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
541 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_IV,
542 (void **)&v, sizeof(ctx->oiv));
543 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
545 return ok != 0 ? v : NULL;
549 * OSSL_PARAM_OCTET_PTR gets us the pointer to the running IV in the provider
551 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
554 const unsigned char *v = ctx->iv;
555 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
558 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV,
559 (void **)&v, sizeof(ctx->iv));
560 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
562 return ok != 0 ? v : NULL;
565 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
568 unsigned char *v = ctx->iv;
569 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
572 OSSL_PARAM_construct_octet_ptr(OSSL_CIPHER_PARAM_UPDATED_IV,
573 (void **)&v, sizeof(ctx->iv));
574 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
576 return ok != 0 ? v : NULL;
578 #endif /* OPENSSL_NO_DEPRECATED_3_0_0 */
580 int EVP_CIPHER_CTX_get_updated_iv(EVP_CIPHER_CTX *ctx, void *buf, size_t len)
582 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
585 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_UPDATED_IV, buf, len);
586 return evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
589 int EVP_CIPHER_CTX_get_original_iv(EVP_CIPHER_CTX *ctx, void *buf, size_t len)
591 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
594 OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV, buf, len);
595 return evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
598 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
603 int EVP_CIPHER_CTX_get_num(const EVP_CIPHER_CTX *ctx)
606 unsigned int v = (unsigned int)ctx->num;
607 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
609 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &v);
610 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
612 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
615 int EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
618 unsigned int n = (unsigned int)num;
619 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
621 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_NUM, &n);
622 ok = evp_do_ciph_ctx_setparams(ctx->cipher, ctx->algctx, params);
629 int EVP_CIPHER_get_key_length(const EVP_CIPHER *cipher)
631 return cipher->key_len;
634 int EVP_CIPHER_CTX_get_key_length(const EVP_CIPHER_CTX *ctx)
637 size_t v = ctx->key_len;
638 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
640 params[0] = OSSL_PARAM_construct_size_t(OSSL_CIPHER_PARAM_KEYLEN, &v);
641 ok = evp_do_ciph_ctx_getparams(ctx->cipher, ctx->algctx, params);
643 return ok != 0 ? (int)v : EVP_CTRL_RET_UNSUPPORTED;
646 int EVP_CIPHER_get_nid(const EVP_CIPHER *cipher)
651 int EVP_CIPHER_CTX_get_nid(const EVP_CIPHER_CTX *ctx)
653 return ctx->cipher->nid;
656 int EVP_CIPHER_is_a(const EVP_CIPHER *cipher, const char *name)
658 if (cipher->prov != NULL)
659 return evp_is_a(cipher->prov, cipher->name_id, NULL, name);
660 return evp_is_a(NULL, 0, EVP_CIPHER_get0_name(cipher), name);
663 int evp_cipher_get_number(const EVP_CIPHER *cipher)
665 return cipher->name_id;
668 const char *EVP_CIPHER_get0_name(const EVP_CIPHER *cipher)
670 if (cipher->type_name != NULL)
671 return cipher->type_name;
673 return OBJ_nid2sn(EVP_CIPHER_get_nid(cipher));
679 const char *EVP_CIPHER_get0_description(const EVP_CIPHER *cipher)
681 if (cipher->description != NULL)
682 return cipher->description;
684 return OBJ_nid2ln(EVP_CIPHER_get_nid(cipher));
690 int EVP_CIPHER_names_do_all(const EVP_CIPHER *cipher,
691 void (*fn)(const char *name, void *data),
694 if (cipher->prov != NULL)
695 return evp_names_do_all(cipher->prov, cipher->name_id, fn, data);
700 const OSSL_PROVIDER *EVP_CIPHER_get0_provider(const EVP_CIPHER *cipher)
705 int EVP_CIPHER_get_mode(const EVP_CIPHER *cipher)
707 return EVP_CIPHER_get_flags(cipher) & EVP_CIPH_MODE;
710 int EVP_MD_is_a(const EVP_MD *md, const char *name)
712 if (md->prov != NULL)
713 return evp_is_a(md->prov, md->name_id, NULL, name);
714 return evp_is_a(NULL, 0, EVP_MD_get0_name(md), name);
717 int evp_md_get_number(const EVP_MD *md)
722 const char *EVP_MD_get0_description(const EVP_MD *md)
724 if (md->description != NULL)
725 return md->description;
727 return OBJ_nid2ln(EVP_MD_nid(md));
733 const char *EVP_MD_get0_name(const EVP_MD *md)
737 if (md->type_name != NULL)
738 return md->type_name;
740 return OBJ_nid2sn(EVP_MD_nid(md));
746 int EVP_MD_names_do_all(const EVP_MD *md,
747 void (*fn)(const char *name, void *data),
750 if (md->prov != NULL)
751 return evp_names_do_all(md->prov, md->name_id, fn, data);
756 const OSSL_PROVIDER *EVP_MD_get0_provider(const EVP_MD *md)
761 int EVP_MD_get_type(const EVP_MD *md)
766 int EVP_MD_get_pkey_type(const EVP_MD *md)
768 return md->pkey_type;
771 int EVP_MD_get_block_size(const EVP_MD *md)
774 ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL);
777 return md->block_size;
780 int EVP_MD_get_size(const EVP_MD *md)
783 ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL);
789 unsigned long EVP_MD_get_flags(const EVP_MD *md)
794 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
796 EVP_MD *md = evp_md_new();
800 md->pkey_type = pkey_type;
801 md->origin = EVP_ORIG_METH;
806 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
811 * Non-legacy EVP_MDs can't be duplicated like this.
812 * Use EVP_MD_up_ref() instead.
814 if (md->prov != NULL)
817 if ((to = EVP_MD_meth_new(md->type, md->pkey_type)) != NULL) {
818 CRYPTO_RWLOCK *lock = to->lock;
820 memcpy(to, md, sizeof(*to));
826 void evp_md_free_int(EVP_MD *md)
828 OPENSSL_free(md->type_name);
829 ossl_provider_free(md->prov);
830 CRYPTO_THREAD_lock_free(md->lock);
834 void EVP_MD_meth_free(EVP_MD *md)
836 if (md == NULL || md->origin != EVP_ORIG_METH)
842 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
844 if (md->block_size != 0)
847 md->block_size = blocksize;
850 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
852 if (md->md_size != 0)
855 md->md_size = resultsize;
858 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
860 if (md->ctx_size != 0)
863 md->ctx_size = datasize;
866 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
874 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
876 if (md->init != NULL)
882 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
886 if (md->update != NULL)
892 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
895 if (md->final != NULL)
901 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
902 const EVP_MD_CTX *from))
904 if (md->copy != NULL)
910 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
912 if (md->cleanup != NULL)
915 md->cleanup = cleanup;
918 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
921 if (md->md_ctrl != NULL)
928 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
930 return md->block_size;
932 int EVP_MD_meth_get_result_size(const EVP_MD *md)
936 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
940 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
944 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
948 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
954 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
959 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
960 const EVP_MD_CTX *from)
964 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
968 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
974 #ifndef OPENSSL_NO_DEPRECATED_3_0
975 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
979 return ctx->reqdigest;
983 const EVP_MD *EVP_MD_CTX_get0_md(const EVP_MD_CTX *ctx)
987 return ctx->reqdigest;
990 EVP_MD *EVP_MD_CTX_get1_md(EVP_MD_CTX *ctx)
996 md = (EVP_MD *)ctx->reqdigest;
997 if (!EVP_MD_up_ref(md))
1002 EVP_PKEY_CTX *EVP_MD_CTX_get_pkey_ctx(const EVP_MD_CTX *ctx)
1007 #if !defined(FIPS_MODULE)
1008 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx)
1011 * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so
1012 * we have to deal with the cleanup job here.
1014 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
1015 EVP_PKEY_CTX_free(ctx->pctx);
1020 /* make sure pctx is not freed when destroying EVP_MD_CTX */
1021 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
1023 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
1026 #endif /* !defined(FIPS_MODULE) */
1028 void *EVP_MD_CTX_get0_md_data(const EVP_MD_CTX *ctx)
1030 return ctx->md_data;
1033 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
1034 const void *data, size_t count)
1039 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
1040 int (*update) (EVP_MD_CTX *ctx,
1041 const void *data, size_t count))
1043 ctx->update = update;
1046 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
1048 ctx->flags |= flags;
1051 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
1053 ctx->flags &= ~flags;
1056 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
1058 return (ctx->flags & flags);
1061 static int evp_cipher_ctx_enable_use_bits(EVP_CIPHER_CTX *ctx,
1062 unsigned int enable)
1064 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
1066 params[0] = OSSL_PARAM_construct_uint(OSSL_CIPHER_PARAM_USE_BITS, &enable);
1067 return EVP_CIPHER_CTX_set_params(ctx, params);
1070 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
1072 int oldflags = ctx->flags;
1074 ctx->flags |= flags;
1075 if (((oldflags ^ ctx->flags) & EVP_CIPH_FLAG_LENGTH_BITS) != 0)
1076 evp_cipher_ctx_enable_use_bits(ctx, 1);
1079 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
1081 int oldflags = ctx->flags;
1083 ctx->flags &= ~flags;
1084 if (((oldflags ^ ctx->flags) & EVP_CIPH_FLAG_LENGTH_BITS) != 0)
1085 evp_cipher_ctx_enable_use_bits(ctx, 0);
1088 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
1090 return (ctx->flags & flags);
1093 int EVP_PKEY_CTX_set_group_name(EVP_PKEY_CTX *ctx, const char *name)
1095 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
1097 if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1098 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1099 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1106 params[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME,
1108 return EVP_PKEY_CTX_set_params(ctx, params);
1111 int EVP_PKEY_CTX_get_group_name(EVP_PKEY_CTX *ctx, char *name, size_t namelen)
1113 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
1114 OSSL_PARAM *p = params;
1116 if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
1117 /* There is no legacy support for this */
1118 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1119 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1126 *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME,
1128 if (!EVP_PKEY_CTX_get_params(ctx, params))
1134 * evp_pkey_keygen() abstracts from the explicit use of B<EVP_PKEY_CTX>
1135 * while providing a generic way of generating a new asymmetric key pair
1136 * of algorithm type I<name> (e.g., C<RSA> or C<EC>).
1137 * The library context I<libctx> and property query I<propq>
1138 * are used when fetching algorithms from providers.
1139 * The I<params> specify algorithm-specific parameters
1140 * such as the RSA modulus size or the name of an EC curve.
1142 static EVP_PKEY *evp_pkey_keygen(OSSL_LIB_CTX *libctx, const char *name,
1143 const char *propq, const OSSL_PARAM *params)
1145 EVP_PKEY *pkey = NULL;
1146 EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new_from_name(libctx, name, propq);
1149 && EVP_PKEY_keygen_init(ctx) > 0
1150 && EVP_PKEY_CTX_set_params(ctx, params))
1151 (void)EVP_PKEY_generate(ctx, &pkey);
1153 EVP_PKEY_CTX_free(ctx);
1157 EVP_PKEY *EVP_PKEY_Q_keygen(OSSL_LIB_CTX *libctx, const char *propq,
1158 const char *type, ...)
1163 OSSL_PARAM params[] = { OSSL_PARAM_END, OSSL_PARAM_END };
1164 EVP_PKEY *ret = NULL;
1166 va_start(args, type);
1168 if (strcasecmp(type, "RSA") == 0) {
1169 bits = va_arg(args, size_t);
1170 params[0] = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_RSA_BITS, &bits);
1171 } else if (strcasecmp(type, "EC") == 0) {
1172 name = va_arg(args, char *);
1173 params[0] = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_GROUP_NAME,
1175 } else if (strcasecmp(type, "ED25519") != 0
1176 && strcasecmp(type, "X25519") != 0
1177 && strcasecmp(type, "ED448") != 0
1178 && strcasecmp(type, "X448") != 0) {
1179 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT);
1182 ret = evp_pkey_keygen(libctx, type, propq, params);