1 /* 2 * Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved. 3 * 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 8 */ 9 10 #ifndef OSSL_CRYPTO_DH_H 11 # define OSSL_CRYPTO_DH_H 12 # pragma once 13 14 # include <openssl/core.h> 15 # include <openssl/params.h> 16 # include <openssl/dh.h> 17 # include "internal/ffc.h" 18 19 DH *ossl_dh_new_by_nid_ex(OSSL_LIB_CTX *libctx, int nid); 20 DH *ossl_dh_new_ex(OSSL_LIB_CTX *libctx); 21 void ossl_dh_set0_libctx(DH *d, OSSL_LIB_CTX *libctx); 22 int ossl_dh_generate_ffc_parameters(DH *dh, int type, int pbits, int qbits, 23 BN_GENCB *cb); 24 int ossl_dh_generate_public_key(BN_CTX *ctx, const DH *dh, 25 const BIGNUM *priv_key, BIGNUM *pub_key); 26 int ossl_dh_get_named_group_uid_from_size(int pbits); 27 const char *ossl_dh_gen_type_id2name(int id); 28 int ossl_dh_gen_type_name2id(const char *name, int type); 29 void ossl_dh_cache_named_group(DH *dh); 30 int ossl_dh_is_named_safe_prime_group(const DH *dh); 31 32 FFC_PARAMS *ossl_dh_get0_params(DH *dh); 33 int ossl_dh_get0_nid(const DH *dh); 34 int ossl_dh_params_fromdata(DH *dh, const OSSL_PARAM params[]); 35 int ossl_dh_key_fromdata(DH *dh, const OSSL_PARAM params[], int include_private); 36 int ossl_dh_params_todata(DH *dh, OSSL_PARAM_BLD *bld, OSSL_PARAM params[]); 37 int ossl_dh_key_todata(DH *dh, OSSL_PARAM_BLD *bld, OSSL_PARAM params[], 38 int include_private); 39 DH *ossl_dh_key_from_pkcs8(const PKCS8_PRIV_KEY_INFO *p8inf, 40 OSSL_LIB_CTX *libctx, const char *propq); 41 int ossl_dh_compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh); 42 43 int ossl_dh_check_pub_key_partial(const DH *dh, const BIGNUM *pub_key, int *ret); 44 int ossl_dh_check_priv_key(const DH *dh, const BIGNUM *priv_key, int *ret); 45 int ossl_dh_check_pairwise(const DH *dh); 46 47 const DH_METHOD *ossl_dh_get_method(const DH *dh); 48 49 int ossl_dh_buf2key(DH *key, const unsigned char *buf, size_t len); 50 size_t ossl_dh_key2buf(const DH *dh, unsigned char **pbuf, size_t size, 51 int alloc); 52 53 int ossl_dh_kdf_X9_42_asn1(unsigned char *out, size_t outlen, 54 const unsigned char *Z, size_t Zlen, 55 const char *cek_alg, 56 const unsigned char *ukm, size_t ukmlen, 57 const EVP_MD *md, 58 OSSL_LIB_CTX *libctx, const char *propq); 59 int ossl_dh_is_foreign(const DH *dh); 60 DH *ossl_dh_dup(const DH *dh, int selection); 61 62 #endif /* OSSL_CRYPTO_DH_H */ 63