118 lines
4.5 KiB
C
Executable File
118 lines
4.5 KiB
C
Executable File
/* $OpenBSD: dh_local.h,v 1.3 2022/01/14 08:25:44 tb Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#ifndef HEADER_DH_LOCAL_H
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#define HEADER_DH_LOCAL_H
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__BEGIN_HIDDEN_DECLS
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struct dh_method {
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const char *name;
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/* Methods here */
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int (*generate_key)(DH *dh);
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int (*compute_key)(unsigned char *key,const BIGNUM *pub_key,DH *dh);
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int (*bn_mod_exp)(const DH *dh, BIGNUM *r, const BIGNUM *a,
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const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
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int (*init)(DH *dh);
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int (*finish)(DH *dh);
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int flags;
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char *app_data;
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/* If this is non-NULL, it will be used to generate parameters */
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int (*generate_params)(DH *dh, int prime_len, int generator,
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BN_GENCB *cb);
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};
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struct dh_st {
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/* This first argument is used to pick up errors when
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* a DH is passed instead of a EVP_PKEY */
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int pad;
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int version;
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BIGNUM *p;
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BIGNUM *g;
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long length; /* optional */
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BIGNUM *pub_key; /* g^x */
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BIGNUM *priv_key; /* x */
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int flags;
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BN_MONT_CTX *method_mont_p;
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/* Place holders if we want to do X9.42 DH */
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BIGNUM *q;
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BIGNUM *j;
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unsigned char *seed;
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int seedlen;
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BIGNUM *counter;
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int references;
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CRYPTO_EX_DATA ex_data;
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const DH_METHOD *meth;
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ENGINE *engine;
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};
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/*
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* Public API in OpenSSL that we only want to use internally.
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*/
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int DH_check_params_ex(const DH *dh);
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int DH_check_params(const DH *dh, int *flags);
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int DH_check_ex(const DH *dh);
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int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key);
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__END_HIDDEN_DECLS
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#endif /* !HEADER_DH_LOCAL_H */
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