| 1 | /*
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| 2 | * Copyright (c) 2006 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of the Institute nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | /*
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| 35 | * $Id$
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| 36 | */
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| 37 |
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| 38 | #ifndef _HEIM_DH_H
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| 39 | #define _HEIM_DH_H 1
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| 40 |
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| 41 | /* symbol renaming */
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| 42 | #define DH_null_method hc_DH_null_method
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| 43 | #define DH_imath_method hc_DH_imath_method
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| 44 | #define DH_new hc_DH_new
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| 45 | #define DH_new_method hc_DH_new_method
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| 46 | #define DH_free hc_DH_free
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| 47 | #define DH_up_ref hc_DH_up_ref
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| 48 | #define DH_size hc_DH_size
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| 49 | #define DH_set_default_method hc_DH_set_default_method
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| 50 | #define DH_get_default_method hc_DH_get_default_method
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| 51 | #define DH_set_method hc_DH_set_method
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| 52 | #define DH_get_method hc_DH_get_method
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| 53 | #define DH_set_ex_data hc_DH_set_ex_data
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| 54 | #define DH_get_ex_data hc_DH_get_ex_data
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| 55 | #define DH_generate_parameters_ex hc_DH_generate_parameters_ex
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| 56 | #define DH_check_pubkey hc_DH_check_pubkey
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| 57 | #define DH_generate_key hc_DH_generate_key
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| 58 | #define DH_compute_key hc_DH_compute_key
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| 59 |
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| 60 | /*
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| 61 | *
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| 62 | */
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| 63 |
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| 64 | typedef struct DH DH;
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| 65 | typedef struct DH_METHOD DH_METHOD;
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| 66 |
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| 67 | #include <hcrypto/bn.h>
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| 68 | #include <hcrypto/engine.h>
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| 69 |
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| 70 | struct DH_METHOD {
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| 71 | const char *name;
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| 72 | int (*generate_key)(DH *);
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| 73 | int (*compute_key)(unsigned char *,const BIGNUM *,DH *);
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| 74 | int (*bn_mod_exp)(const DH *, BIGNUM *, const BIGNUM *,
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| 75 | const BIGNUM *, const BIGNUM *, BN_CTX *,
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| 76 | BN_MONT_CTX *);
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| 77 | int (*init)(DH *);
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| 78 | int (*finish)(DH *);
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| 79 | int flags;
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| 80 | void *app_data;
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| 81 | int (*generate_params)(DH *, int, int, BN_GENCB *);
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| 82 | };
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| 83 |
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| 84 | struct DH {
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| 85 | int pad;
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| 86 | int version;
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| 87 | BIGNUM *p;
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| 88 | BIGNUM *g;
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| 89 | long length;
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| 90 | BIGNUM *pub_key;
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| 91 | BIGNUM *priv_key;
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| 92 | int flags;
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| 93 | void *method_mont_p;
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| 94 | BIGNUM *q;
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| 95 | BIGNUM *j;
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| 96 | void *seed;
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| 97 | int seedlen;
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| 98 | BIGNUM *counter;
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| 99 | int references;
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| 100 | struct CRYPTO_EX_DATA {
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| 101 | void *sk;
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| 102 | int dummy;
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| 103 | } ex_data;
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| 104 | const DH_METHOD *meth;
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| 105 | ENGINE *engine;
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| 106 | };
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| 107 |
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| 108 | /* DH_check_pubkey return codes in `codes' argument. */
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| 109 | #define DH_CHECK_PUBKEY_TOO_SMALL 1
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| 110 | #define DH_CHECK_PUBKEY_TOO_LARGE 2
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| 111 |
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| 112 | /*
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| 113 | *
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| 114 | */
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| 115 |
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| 116 | const DH_METHOD *DH_null_method(void);
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| 117 | const DH_METHOD *DH_imath_method(void);
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| 118 |
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| 119 | DH * DH_new(void);
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| 120 | DH * DH_new_method(ENGINE *);
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| 121 | void DH_free(DH *);
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| 122 | int DH_up_ref(DH *);
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| 123 |
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| 124 | int DH_size(const DH *);
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| 125 |
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| 126 |
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| 127 | void DH_set_default_method(const DH_METHOD *);
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| 128 | const DH_METHOD *
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| 129 | DH_get_default_method(void);
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| 130 | int DH_set_method(DH *, const DH_METHOD *);
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| 131 |
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| 132 | int DH_set_ex_data(DH *, int, void *);
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| 133 | void * DH_get_ex_data(DH *, int);
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| 134 |
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| 135 | int DH_generate_parameters_ex(DH *, int, int, BN_GENCB *);
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| 136 | int DH_check_pubkey(const DH *, const BIGNUM *, int *);
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| 137 | int DH_generate_key(DH *);
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| 138 | int DH_compute_key(unsigned char *,const BIGNUM *,DH *);
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| 139 |
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| 140 | #endif /* _HEIM_DH_H */
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| 141 |
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