1 /*
2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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 "dh_local.h"
11 #include <string.h>
12 #include <openssl/err.h>
13
DH_meth_new(const char * name,int flags)14 DH_METHOD *DH_meth_new(const char *name, int flags)
15 {
16 DH_METHOD *dhm = OPENSSL_zalloc(sizeof(*dhm));
17
18 if (dhm != NULL) {
19 dhm->flags = flags;
20
21 dhm->name = OPENSSL_strdup(name);
22 if (dhm->name != NULL)
23 return dhm;
24
25 OPENSSL_free(dhm);
26 }
27
28 DHerr(DH_F_DH_METH_NEW, ERR_R_MALLOC_FAILURE);
29 return NULL;
30 }
31
DH_meth_free(DH_METHOD * dhm)32 void DH_meth_free(DH_METHOD *dhm)
33 {
34 if (dhm != NULL) {
35 OPENSSL_free(dhm->name);
36 OPENSSL_free(dhm);
37 }
38 }
39
DH_meth_dup(const DH_METHOD * dhm)40 DH_METHOD *DH_meth_dup(const DH_METHOD *dhm)
41 {
42 DH_METHOD *ret = OPENSSL_malloc(sizeof(*ret));
43
44 if (ret != NULL) {
45 memcpy(ret, dhm, sizeof(*dhm));
46
47 ret->name = OPENSSL_strdup(dhm->name);
48 if (ret->name != NULL)
49 return ret;
50
51 OPENSSL_free(ret);
52 }
53
54 DHerr(DH_F_DH_METH_DUP, ERR_R_MALLOC_FAILURE);
55 return NULL;
56 }
57
DH_meth_get0_name(const DH_METHOD * dhm)58 const char *DH_meth_get0_name(const DH_METHOD *dhm)
59 {
60 return dhm->name;
61 }
62
DH_meth_set1_name(DH_METHOD * dhm,const char * name)63 int DH_meth_set1_name(DH_METHOD *dhm, const char *name)
64 {
65 char *tmpname = OPENSSL_strdup(name);
66
67 if (tmpname == NULL) {
68 DHerr(DH_F_DH_METH_SET1_NAME, ERR_R_MALLOC_FAILURE);
69 return 0;
70 }
71
72 OPENSSL_free(dhm->name);
73 dhm->name = tmpname;
74
75 return 1;
76 }
77
DH_meth_get_flags(const DH_METHOD * dhm)78 int DH_meth_get_flags(const DH_METHOD *dhm)
79 {
80 return dhm->flags;
81 }
82
DH_meth_set_flags(DH_METHOD * dhm,int flags)83 int DH_meth_set_flags(DH_METHOD *dhm, int flags)
84 {
85 dhm->flags = flags;
86 return 1;
87 }
88
DH_meth_get0_app_data(const DH_METHOD * dhm)89 void *DH_meth_get0_app_data(const DH_METHOD *dhm)
90 {
91 return dhm->app_data;
92 }
93
DH_meth_set0_app_data(DH_METHOD * dhm,void * app_data)94 int DH_meth_set0_app_data(DH_METHOD *dhm, void *app_data)
95 {
96 dhm->app_data = app_data;
97 return 1;
98 }
99
DH_meth_get_generate_key(const DH_METHOD * dhm)100 int (*DH_meth_get_generate_key(const DH_METHOD *dhm)) (DH *)
101 {
102 return dhm->generate_key;
103 }
104
DH_meth_set_generate_key(DH_METHOD * dhm,int (* generate_key)(DH *))105 int DH_meth_set_generate_key(DH_METHOD *dhm, int (*generate_key) (DH *))
106 {
107 dhm->generate_key = generate_key;
108 return 1;
109 }
110
DH_meth_get_compute_key(const DH_METHOD * dhm)111 int (*DH_meth_get_compute_key(const DH_METHOD *dhm))
112 (unsigned char *key, const BIGNUM *pub_key, DH *dh)
113 {
114 return dhm->compute_key;
115 }
116
DH_meth_set_compute_key(DH_METHOD * dhm,int (* compute_key)(unsigned char * key,const BIGNUM * pub_key,DH * dh))117 int DH_meth_set_compute_key(DH_METHOD *dhm,
118 int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh))
119 {
120 dhm->compute_key = compute_key;
121 return 1;
122 }
123
124
DH_meth_get_bn_mod_exp(const DH_METHOD * dhm)125 int (*DH_meth_get_bn_mod_exp(const DH_METHOD *dhm))
126 (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
127 BN_CTX *, BN_MONT_CTX *)
128 {
129 return dhm->bn_mod_exp;
130 }
131
DH_meth_set_bn_mod_exp(DH_METHOD * dhm,int (* bn_mod_exp)(const DH *,BIGNUM *,const BIGNUM *,const BIGNUM *,const BIGNUM *,BN_CTX *,BN_MONT_CTX *))132 int DH_meth_set_bn_mod_exp(DH_METHOD *dhm,
133 int (*bn_mod_exp) (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *,
134 const BIGNUM *, BN_CTX *, BN_MONT_CTX *))
135 {
136 dhm->bn_mod_exp = bn_mod_exp;
137 return 1;
138 }
139
DH_meth_get_init(const DH_METHOD * dhm)140 int (*DH_meth_get_init(const DH_METHOD *dhm))(DH *)
141 {
142 return dhm->init;
143 }
144
DH_meth_set_init(DH_METHOD * dhm,int (* init)(DH *))145 int DH_meth_set_init(DH_METHOD *dhm, int (*init)(DH *))
146 {
147 dhm->init = init;
148 return 1;
149 }
150
DH_meth_get_finish(const DH_METHOD * dhm)151 int (*DH_meth_get_finish(const DH_METHOD *dhm)) (DH *)
152 {
153 return dhm->finish;
154 }
155
DH_meth_set_finish(DH_METHOD * dhm,int (* finish)(DH *))156 int DH_meth_set_finish(DH_METHOD *dhm, int (*finish) (DH *))
157 {
158 dhm->finish = finish;
159 return 1;
160 }
161
DH_meth_get_generate_params(const DH_METHOD * dhm)162 int (*DH_meth_get_generate_params(const DH_METHOD *dhm))
163 (DH *, int, int, BN_GENCB *)
164 {
165 return dhm->generate_params;
166 }
167
DH_meth_set_generate_params(DH_METHOD * dhm,int (* generate_params)(DH *,int,int,BN_GENCB *))168 int DH_meth_set_generate_params(DH_METHOD *dhm,
169 int (*generate_params) (DH *, int, int, BN_GENCB *))
170 {
171 dhm->generate_params = generate_params;
172 return 1;
173 }
174