include/crypto/dh.h

   1 /*
   2  * Copyright 2020 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 #include <openssl/core.h>
  11 #include <openssl/params.h>
  12 #include <openssl/dh.h>
  13 #include "internal/ffc.h"
  14
  15 DH *dh_new_by_nid_ex(OSSL_LIB_CTX *libctx, int nid);
  16 DH *dh_new_ex(OSSL_LIB_CTX *libctx);
  17
  18 int dh_generate_ffc_parameters(DH *dh, int type, int pbits, int qbits,
  19                                BN_GENCB *cb);
  20 int dh_generate_public_key(BN_CTX *ctx, DH *dh, const BIGNUM *priv_key,
  21                            BIGNUM *pub_key);
  22 int dh_get_named_group_uid_from_size(int pbits);
  23 const char *dh_gen_type_id2name(int id);
  24 void dh_cache_named_group(DH *dh);
  25
  26 FFC_PARAMS *dh_get0_params(DH *dh);
  27 int dh_get0_nid(const DH *dh);
  28 int dh_params_fromdata(DH *dh, const OSSL_PARAM params[]);
  29 int dh_key_fromdata(DH *dh, const OSSL_PARAM params[]);
  30 int dh_params_todata(DH *dh, OSSL_PARAM_BLD *bld, OSSL_PARAM params[]);
  31 int dh_key_todata(DH *dh, OSSL_PARAM_BLD *bld, OSSL_PARAM params[]);
  32
  33 int dh_check_pub_key_partial(const DH *dh, const BIGNUM *pub_key, int *ret);
  34 int dh_check_priv_key(const DH *dh, const BIGNUM *priv_key, int *ret);
  35 int dh_check_pairwise(DH *dh);
  36
  37 const DH_METHOD *dh_get_method(const DH *dh);
  38
  39 int dh_buf2key(DH *key, const unsigned char *buf, size_t len);
  40 size_t dh_key2buf(const DH *dh, unsigned char **pbuf, size_t size, int alloc);
  41
  42 int dh_KDF_X9_42_asn1(unsigned char *out, size_t outlen,
  43                       const unsigned char *Z, size_t Zlen,
  44                       const char *cek_alg,
  45                       const unsigned char *ukm, size_t ukmlen, const EVP_MD *md,
  46                       OSSL_LIB_CTX *libctx, const char *propq);