1 /*
2 * Copyright 2016-2020 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 /*
11 * DH low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14 #include "internal/deprecated.h"
15
16 #include "dh_local.h"
17 #include <string.h>
18 #include <openssl/err.h>
19
DH_meth_new(const char * name,int flags)20 DH_METHOD *DH_meth_new(const char *name, int flags)
21 {
22 DH_METHOD *dhm = OPENSSL_zalloc(sizeof(*dhm));
23
24 if (dhm != NULL) {
25 dhm->flags = flags;
26
27 dhm->name = OPENSSL_strdup(name);
28 if (dhm->name != NULL)
29 return dhm;
30
31 OPENSSL_free(dhm);
32 }
33
34 return NULL;
35 }
36
DH_meth_free(DH_METHOD * dhm)37 void DH_meth_free(DH_METHOD *dhm)
38 {
39 if (dhm != NULL) {
40 OPENSSL_free(dhm->name);
41 OPENSSL_free(dhm);
42 }
43 }
44
DH_meth_dup(const DH_METHOD * dhm)45 DH_METHOD *DH_meth_dup(const DH_METHOD *dhm)
46 {
47 DH_METHOD *ret = OPENSSL_malloc(sizeof(*ret));
48
49 if (ret != NULL) {
50 memcpy(ret, dhm, sizeof(*dhm));
51
52 ret->name = OPENSSL_strdup(dhm->name);
53 if (ret->name != NULL)
54 return ret;
55
56 OPENSSL_free(ret);
57 }
58
59 return NULL;
60 }
61
DH_meth_get0_name(const DH_METHOD * dhm)62 const char *DH_meth_get0_name(const DH_METHOD *dhm)
63 {
64 return dhm->name;
65 }
66
DH_meth_set1_name(DH_METHOD * dhm,const char * name)67 int DH_meth_set1_name(DH_METHOD *dhm, const char *name)
68 {
69 char *tmpname = OPENSSL_strdup(name);
70
71 if (tmpname == NULL)
72 return 0;
73
74 OPENSSL_free(dhm->name);
75 dhm->name = tmpname;
76
77 return 1;
78 }
79
DH_meth_get_flags(const DH_METHOD * dhm)80 int DH_meth_get_flags(const DH_METHOD *dhm)
81 {
82 return dhm->flags;
83 }
84
DH_meth_set_flags(DH_METHOD * dhm,int flags)85 int DH_meth_set_flags(DH_METHOD *dhm, int flags)
86 {
87 dhm->flags = flags;
88 return 1;
89 }
90
DH_meth_get0_app_data(const DH_METHOD * dhm)91 void *DH_meth_get0_app_data(const DH_METHOD *dhm)
92 {
93 return dhm->app_data;
94 }
95
DH_meth_set0_app_data(DH_METHOD * dhm,void * app_data)96 int DH_meth_set0_app_data(DH_METHOD *dhm, void *app_data)
97 {
98 dhm->app_data = app_data;
99 return 1;
100 }
101
DH_meth_get_generate_key(const DH_METHOD * dhm)102 int (*DH_meth_get_generate_key(const DH_METHOD *dhm)) (DH *)
103 {
104 return dhm->generate_key;
105 }
106
DH_meth_set_generate_key(DH_METHOD * dhm,int (* generate_key)(DH *))107 int DH_meth_set_generate_key(DH_METHOD *dhm, int (*generate_key) (DH *))
108 {
109 dhm->generate_key = generate_key;
110 return 1;
111 }
112
DH_meth_get_compute_key(const DH_METHOD * dhm)113 int (*DH_meth_get_compute_key(const DH_METHOD *dhm))
114 (unsigned char *key, const BIGNUM *pub_key, DH *dh)
115 {
116 return dhm->compute_key;
117 }
118
DH_meth_set_compute_key(DH_METHOD * dhm,int (* compute_key)(unsigned char * key,const BIGNUM * pub_key,DH * dh))119 int DH_meth_set_compute_key(DH_METHOD *dhm,
120 int (*compute_key) (unsigned char *key, const BIGNUM *pub_key, DH *dh))
121 {
122 dhm->compute_key = compute_key;
123 return 1;
124 }
125
126
DH_meth_get_bn_mod_exp(const DH_METHOD * dhm)127 int (*DH_meth_get_bn_mod_exp(const DH_METHOD *dhm))
128 (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
129 BN_CTX *, BN_MONT_CTX *)
130 {
131 return dhm->bn_mod_exp;
132 }
133
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 *))134 int DH_meth_set_bn_mod_exp(DH_METHOD *dhm,
135 int (*bn_mod_exp) (const DH *, BIGNUM *, const BIGNUM *, const BIGNUM *,
136 const BIGNUM *, BN_CTX *, BN_MONT_CTX *))
137 {
138 dhm->bn_mod_exp = bn_mod_exp;
139 return 1;
140 }
141
DH_meth_get_init(const DH_METHOD * dhm)142 int (*DH_meth_get_init(const DH_METHOD *dhm))(DH *)
143 {
144 return dhm->init;
145 }
146
DH_meth_set_init(DH_METHOD * dhm,int (* init)(DH *))147 int DH_meth_set_init(DH_METHOD *dhm, int (*init)(DH *))
148 {
149 dhm->init = init;
150 return 1;
151 }
152
DH_meth_get_finish(const DH_METHOD * dhm)153 int (*DH_meth_get_finish(const DH_METHOD *dhm)) (DH *)
154 {
155 return dhm->finish;
156 }
157
DH_meth_set_finish(DH_METHOD * dhm,int (* finish)(DH *))158 int DH_meth_set_finish(DH_METHOD *dhm, int (*finish) (DH *))
159 {
160 dhm->finish = finish;
161 return 1;
162 }
163
DH_meth_get_generate_params(const DH_METHOD * dhm)164 int (*DH_meth_get_generate_params(const DH_METHOD *dhm))
165 (DH *, int, int, BN_GENCB *)
166 {
167 return dhm->generate_params;
168 }
169
DH_meth_set_generate_params(DH_METHOD * dhm,int (* generate_params)(DH *,int,int,BN_GENCB *))170 int DH_meth_set_generate_params(DH_METHOD *dhm,
171 int (*generate_params) (DH *, int, int, BN_GENCB *))
172 {
173 dhm->generate_params = generate_params;
174 return 1;
175 }
176
