1*de0e0e4dSAntonio Huete Jimenez /* $OpenBSD: dh_local.h,v 1.3 2022/01/14 08:25:44 tb Exp $ */ 2*de0e0e4dSAntonio Huete Jimenez /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3*de0e0e4dSAntonio Huete Jimenez * All rights reserved. 4*de0e0e4dSAntonio Huete Jimenez * 5*de0e0e4dSAntonio Huete Jimenez * This package is an SSL implementation written 6*de0e0e4dSAntonio Huete Jimenez * by Eric Young (eay@cryptsoft.com). 7*de0e0e4dSAntonio Huete Jimenez * The implementation was written so as to conform with Netscapes SSL. 8*de0e0e4dSAntonio Huete Jimenez * 9*de0e0e4dSAntonio Huete Jimenez * This library is free for commercial and non-commercial use as long as 10*de0e0e4dSAntonio Huete Jimenez * the following conditions are aheared to. The following conditions 11*de0e0e4dSAntonio Huete Jimenez * apply to all code found in this distribution, be it the RC4, RSA, 12*de0e0e4dSAntonio Huete Jimenez * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13*de0e0e4dSAntonio Huete Jimenez * included with this distribution is covered by the same copyright terms 14*de0e0e4dSAntonio Huete Jimenez * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15*de0e0e4dSAntonio Huete Jimenez * 16*de0e0e4dSAntonio Huete Jimenez * Copyright remains Eric Young's, and as such any Copyright notices in 17*de0e0e4dSAntonio Huete Jimenez * the code are not to be removed. 18*de0e0e4dSAntonio Huete Jimenez * If this package is used in a product, Eric Young should be given attribution 19*de0e0e4dSAntonio Huete Jimenez * as the author of the parts of the library used. 20*de0e0e4dSAntonio Huete Jimenez * This can be in the form of a textual message at program startup or 21*de0e0e4dSAntonio Huete Jimenez * in documentation (online or textual) provided with the package. 22*de0e0e4dSAntonio Huete Jimenez * 23*de0e0e4dSAntonio Huete Jimenez * Redistribution and use in source and binary forms, with or without 24*de0e0e4dSAntonio Huete Jimenez * modification, are permitted provided that the following conditions 25*de0e0e4dSAntonio Huete Jimenez * are met: 26*de0e0e4dSAntonio Huete Jimenez * 1. Redistributions of source code must retain the copyright 27*de0e0e4dSAntonio Huete Jimenez * notice, this list of conditions and the following disclaimer. 28*de0e0e4dSAntonio Huete Jimenez * 2. Redistributions in binary form must reproduce the above copyright 29*de0e0e4dSAntonio Huete Jimenez * notice, this list of conditions and the following disclaimer in the 30*de0e0e4dSAntonio Huete Jimenez * documentation and/or other materials provided with the distribution. 31*de0e0e4dSAntonio Huete Jimenez * 3. All advertising materials mentioning features or use of this software 32*de0e0e4dSAntonio Huete Jimenez * must display the following acknowledgement: 33*de0e0e4dSAntonio Huete Jimenez * "This product includes cryptographic software written by 34*de0e0e4dSAntonio Huete Jimenez * Eric Young (eay@cryptsoft.com)" 35*de0e0e4dSAntonio Huete Jimenez * The word 'cryptographic' can be left out if the rouines from the library 36*de0e0e4dSAntonio Huete Jimenez * being used are not cryptographic related :-). 37*de0e0e4dSAntonio Huete Jimenez * 4. If you include any Windows specific code (or a derivative thereof) from 38*de0e0e4dSAntonio Huete Jimenez * the apps directory (application code) you must include an acknowledgement: 39*de0e0e4dSAntonio Huete Jimenez * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40*de0e0e4dSAntonio Huete Jimenez * 41*de0e0e4dSAntonio Huete Jimenez * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42*de0e0e4dSAntonio Huete Jimenez * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43*de0e0e4dSAntonio Huete Jimenez * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44*de0e0e4dSAntonio Huete Jimenez * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45*de0e0e4dSAntonio Huete Jimenez * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46*de0e0e4dSAntonio Huete Jimenez * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47*de0e0e4dSAntonio Huete Jimenez * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48*de0e0e4dSAntonio Huete Jimenez * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49*de0e0e4dSAntonio Huete Jimenez * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50*de0e0e4dSAntonio Huete Jimenez * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51*de0e0e4dSAntonio Huete Jimenez * SUCH DAMAGE. 52*de0e0e4dSAntonio Huete Jimenez * 53*de0e0e4dSAntonio Huete Jimenez * The licence and distribution terms for any publically available version or 54*de0e0e4dSAntonio Huete Jimenez * derivative of this code cannot be changed. i.e. this code cannot simply be 55*de0e0e4dSAntonio Huete Jimenez * copied and put under another distribution licence 56*de0e0e4dSAntonio Huete Jimenez * [including the GNU Public Licence.] 57*de0e0e4dSAntonio Huete Jimenez */ 58*de0e0e4dSAntonio Huete Jimenez 59*de0e0e4dSAntonio Huete Jimenez #ifndef HEADER_DH_LOCAL_H 60*de0e0e4dSAntonio Huete Jimenez #define HEADER_DH_LOCAL_H 61*de0e0e4dSAntonio Huete Jimenez 62*de0e0e4dSAntonio Huete Jimenez __BEGIN_HIDDEN_DECLS 63*de0e0e4dSAntonio Huete Jimenez 64*de0e0e4dSAntonio Huete Jimenez struct dh_method { 65*de0e0e4dSAntonio Huete Jimenez const char *name; 66*de0e0e4dSAntonio Huete Jimenez /* Methods here */ 67*de0e0e4dSAntonio Huete Jimenez int (*generate_key)(DH *dh); 68*de0e0e4dSAntonio Huete Jimenez int (*compute_key)(unsigned char *key,const BIGNUM *pub_key,DH *dh); 69*de0e0e4dSAntonio Huete Jimenez int (*bn_mod_exp)(const DH *dh, BIGNUM *r, const BIGNUM *a, 70*de0e0e4dSAntonio Huete Jimenez const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx); 71*de0e0e4dSAntonio Huete Jimenez int (*init)(DH *dh); 72*de0e0e4dSAntonio Huete Jimenez int (*finish)(DH *dh); 73*de0e0e4dSAntonio Huete Jimenez int flags; 74*de0e0e4dSAntonio Huete Jimenez char *app_data; 75*de0e0e4dSAntonio Huete Jimenez /* If this is non-NULL, it will be used to generate parameters */ 76*de0e0e4dSAntonio Huete Jimenez int (*generate_params)(DH *dh, int prime_len, int generator, 77*de0e0e4dSAntonio Huete Jimenez BN_GENCB *cb); 78*de0e0e4dSAntonio Huete Jimenez }; 79*de0e0e4dSAntonio Huete Jimenez 80*de0e0e4dSAntonio Huete Jimenez struct dh_st { 81*de0e0e4dSAntonio Huete Jimenez /* This first argument is used to pick up errors when 82*de0e0e4dSAntonio Huete Jimenez * a DH is passed instead of a EVP_PKEY */ 83*de0e0e4dSAntonio Huete Jimenez int pad; 84*de0e0e4dSAntonio Huete Jimenez int version; 85*de0e0e4dSAntonio Huete Jimenez BIGNUM *p; 86*de0e0e4dSAntonio Huete Jimenez BIGNUM *g; 87*de0e0e4dSAntonio Huete Jimenez long length; /* optional */ 88*de0e0e4dSAntonio Huete Jimenez BIGNUM *pub_key; /* g^x */ 89*de0e0e4dSAntonio Huete Jimenez BIGNUM *priv_key; /* x */ 90*de0e0e4dSAntonio Huete Jimenez 91*de0e0e4dSAntonio Huete Jimenez int flags; 92*de0e0e4dSAntonio Huete Jimenez BN_MONT_CTX *method_mont_p; 93*de0e0e4dSAntonio Huete Jimenez /* Place holders if we want to do X9.42 DH */ 94*de0e0e4dSAntonio Huete Jimenez BIGNUM *q; 95*de0e0e4dSAntonio Huete Jimenez BIGNUM *j; 96*de0e0e4dSAntonio Huete Jimenez unsigned char *seed; 97*de0e0e4dSAntonio Huete Jimenez int seedlen; 98*de0e0e4dSAntonio Huete Jimenez BIGNUM *counter; 99*de0e0e4dSAntonio Huete Jimenez 100*de0e0e4dSAntonio Huete Jimenez int references; 101*de0e0e4dSAntonio Huete Jimenez CRYPTO_EX_DATA ex_data; 102*de0e0e4dSAntonio Huete Jimenez const DH_METHOD *meth; 103*de0e0e4dSAntonio Huete Jimenez ENGINE *engine; 104*de0e0e4dSAntonio Huete Jimenez }; 105*de0e0e4dSAntonio Huete Jimenez 106*de0e0e4dSAntonio Huete Jimenez /* 107*de0e0e4dSAntonio Huete Jimenez * Public API in OpenSSL that we only want to use internally. 108*de0e0e4dSAntonio Huete Jimenez */ 109*de0e0e4dSAntonio Huete Jimenez 110*de0e0e4dSAntonio Huete Jimenez int DH_check_params_ex(const DH *dh); 111*de0e0e4dSAntonio Huete Jimenez int DH_check_params(const DH *dh, int *flags); 112*de0e0e4dSAntonio Huete Jimenez int DH_check_ex(const DH *dh); 113*de0e0e4dSAntonio Huete Jimenez int DH_check_pub_key_ex(const DH *dh, const BIGNUM *pub_key); 114*de0e0e4dSAntonio Huete Jimenez 115*de0e0e4dSAntonio Huete Jimenez __END_HIDDEN_DECLS 116*de0e0e4dSAntonio Huete Jimenez 117*de0e0e4dSAntonio Huete Jimenez #endif /* !HEADER_DH_LOCAL_H */ 118