/src/samba/third_party/heimdal/lib/hcrypto/dsa.c
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1 | | /* |
2 | | * Copyright (c) 2006 Kungliga Tekniska Högskolan |
3 | | * (Royal Institute of Technology, Stockholm, Sweden). |
4 | | * All rights reserved. |
5 | | * |
6 | | * Redistribution and use in source and binary forms, with or without |
7 | | * modification, are permitted provided that the following conditions |
8 | | * are met: |
9 | | * |
10 | | * 1. Redistributions of source code must retain the above copyright |
11 | | * notice, this list of conditions and the following disclaimer. |
12 | | * |
13 | | * 2. Redistributions in binary form must reproduce the above copyright |
14 | | * notice, this list of conditions and the following disclaimer in the |
15 | | * documentation and/or other materials provided with the distribution. |
16 | | * |
17 | | * 3. Neither the name of the Institute nor the names of its contributors |
18 | | * may be used to endorse or promote products derived from this software |
19 | | * without specific prior written permission. |
20 | | * |
21 | | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
22 | | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
23 | | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
24 | | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
25 | | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
26 | | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
27 | | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
28 | | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
29 | | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
30 | | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
31 | | * SUCH DAMAGE. |
32 | | */ |
33 | | |
34 | | #include <config.h> |
35 | | #include <roken.h> |
36 | | |
37 | | #include <dsa.h> |
38 | | |
39 | | /* |
40 | | * |
41 | | */ |
42 | | |
43 | | DSA * |
44 | | DSA_new(void) |
45 | 0 | { |
46 | 0 | DSA *dsa = calloc(1, sizeof(*dsa)); |
47 | 0 | dsa->meth = rk_UNCONST(DSA_get_default_method()); |
48 | 0 | dsa->references = 1; |
49 | 0 | return dsa; |
50 | 0 | } |
51 | | |
52 | | void |
53 | | DSA_free(DSA *dsa) |
54 | 0 | { |
55 | 0 | if (dsa->references <= 0) |
56 | 0 | abort(); |
57 | | |
58 | 0 | if (--dsa->references > 0) |
59 | 0 | return; |
60 | | |
61 | 0 | (*dsa->meth->finish)(dsa); |
62 | |
|
63 | 0 | #define free_if(f) if (f) { BN_free(f); } |
64 | 0 | free_if(dsa->p); |
65 | 0 | free_if(dsa->q); |
66 | 0 | free_if(dsa->g); |
67 | 0 | free_if(dsa->pub_key); |
68 | 0 | free_if(dsa->priv_key); |
69 | 0 | free_if(dsa->kinv); |
70 | 0 | free_if(dsa->r); |
71 | 0 | #undef free_if |
72 | |
|
73 | 0 | memset_s(dsa, sizeof(*dsa), 0, sizeof(*dsa)); |
74 | 0 | free(dsa); |
75 | |
|
76 | 0 | } |
77 | | |
78 | | int |
79 | | DSA_up_ref(DSA *dsa) |
80 | 0 | { |
81 | 0 | return ++dsa->references; |
82 | 0 | } |
83 | | |
84 | | /* |
85 | | * |
86 | | */ |
87 | | |
88 | | static const DSA_METHOD dsa_null_method = { |
89 | | "hcrypto null DSA", |
90 | | NULL, |
91 | | NULL, |
92 | | NULL, |
93 | | NULL, |
94 | | NULL, |
95 | | NULL, |
96 | | NULL, |
97 | | 0, |
98 | | NULL |
99 | | }; |
100 | | |
101 | | const DSA_METHOD * |
102 | | DSA_null_method(void) |
103 | 0 | { |
104 | 0 | return &dsa_null_method; |
105 | 0 | } |
106 | | |
107 | | |
108 | | const DSA_METHOD *dsa_default_mech = &dsa_null_method; |
109 | | |
110 | | void |
111 | | DSA_set_default_method(const DSA_METHOD *mech) |
112 | 0 | { |
113 | 0 | dsa_default_mech = mech; |
114 | 0 | } |
115 | | |
116 | | const DSA_METHOD * |
117 | | DSA_get_default_method(void) |
118 | 0 | { |
119 | 0 | return dsa_default_mech; |
120 | 0 | } |
121 | | |
122 | | int |
123 | | DSA_verify(int type, const unsigned char * digest, int digest_len, |
124 | | const unsigned char *sig, int sig_len, DSA *dsa) |
125 | 0 | { |
126 | 0 | return -1; |
127 | 0 | } |