1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* Copyright (c) 2010 .SE (The Internet Infrastructure Foundation)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
BotanDHPublicKey.cpp
Botan Diffie-Hellman public key class
*****************************************************************************/
#include "config.h"
#include "log.h"
#include "BotanDHPublicKey.h"
#include "BotanUtil.h"
#include <string.h>
// Constructors
BotanDHPublicKey::BotanDHPublicKey()
{
dh = NULL;
}
BotanDHPublicKey::BotanDHPublicKey(const Botan::DH_PublicKey* inDH)
{
dh = NULL;
setFromBotan(inDH);
}
// Destructor
BotanDHPublicKey::~BotanDHPublicKey()
{
delete dh;
}
// The type
/*static*/ const char* BotanDHPublicKey::type = "Botan DH Public Key";
// Set from Botan representation
void BotanDHPublicKey::setFromBotan(const Botan::DH_PublicKey* inDH)
{
ByteString inP = BotanUtil::bigInt2ByteString(inDH->group_p());
setP(inP);
ByteString inG = BotanUtil::bigInt2ByteString(inDH->group_g());
setG(inG);
ByteString inY = BotanUtil::bigInt2ByteString(inDH->get_y());
setY(inY);
}
// Check if the key is of the given type
bool BotanDHPublicKey::isOfType(const char* inType)
{
return !strcmp(type, inType);
}
// Setters for the DH public key components
void BotanDHPublicKey::setP(const ByteString& inP)
{
DHPublicKey::setP(inP);
if (dh)
{
delete dh;
dh = NULL;
}
}
void BotanDHPublicKey::setG(const ByteString& inG)
{
DHPublicKey::setG(inG);
if (dh)
{
delete dh;
dh = NULL;
}
}
void BotanDHPublicKey::setY(const ByteString& inY)
{
DHPublicKey::setY(inY);
if (dh)
{
delete dh;
dh = NULL;
}
}
// Retrieve the Botan representation of the key
Botan::DH_PublicKey* BotanDHPublicKey::getBotanKey()
{
if (!dh)
{
createBotanKey();
}
return dh;
}
// Create the Botan representation of the key
void BotanDHPublicKey::createBotanKey()
{
// We actually do not need to check q, since it can be set zero
if (p.size() != 0 && y.size() != 0)
{
if (dh)
{
delete dh;
dh = NULL;
}
try
{
dh = new Botan::DH_PublicKey(Botan::DL_Group(BotanUtil::byteString2bigInt(p),
BotanUtil::byteString2bigInt(g)),
BotanUtil::byteString2bigInt(y));
}
catch (...)
{
ERROR_MSG("Could not create the Botan public key");
}
}
}
|
