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
|
/*
* Copyright (c) 2010 SURFnet bv
* 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.
*/
/*****************************************************************************
OSSLECPublicKey.cpp
OpenSSL Elliptic Curve public key class
*****************************************************************************/
#include "config.h"
#ifdef WITH_ECC
#include "log.h"
#include "OSSLECPublicKey.h"
#include "OSSLUtil.h"
#include <openssl/bn.h>
#include <string.h>
// Constructors
OSSLECPublicKey::OSSLECPublicKey()
{
eckey = EC_KEY_new();
}
OSSLECPublicKey::OSSLECPublicKey(const EC_KEY* inECKEY)
{
eckey = EC_KEY_new();
setFromOSSL(inECKEY);
}
// Destructor
OSSLECPublicKey::~OSSLECPublicKey()
{
EC_KEY_free(eckey);
}
// The type
/*static*/ const char* OSSLECPublicKey::type = "OpenSSL EC Public Key";
// Get the base point order length
unsigned long OSSLECPublicKey::getOrderLength() const
{
const EC_GROUP* grp = EC_KEY_get0_group(eckey);
if (grp != NULL)
{
BIGNUM* order = BN_new();
if (order == NULL)
return 0;
if (!EC_GROUP_get_order(grp, order, NULL))
{
BN_clear_free(order);
return 0;
}
unsigned long len = BN_num_bytes(order);
BN_clear_free(order);
return len;
}
return 0;
}
// Set from OpenSSL representation
void OSSLECPublicKey::setFromOSSL(const EC_KEY* inECKEY)
{
const EC_GROUP* grp = EC_KEY_get0_group(inECKEY);
if (grp != NULL)
{
ByteString inEC = OSSL::grp2ByteString(grp);
setEC(inEC);
}
const EC_POINT* pub = EC_KEY_get0_public_key(inECKEY);
if (pub != NULL && grp != NULL)
{
ByteString inQ = OSSL::pt2ByteString(pub, grp);
setQ(inQ);
}
}
// Check if the key is of the given type
bool OSSLECPublicKey::isOfType(const char* inType)
{
return !strcmp(type, inType);
}
// Setters for the EC public key components
void OSSLECPublicKey::setEC(const ByteString& inEC)
{
ECPublicKey::setEC(inEC);
EC_GROUP* grp = OSSL::byteString2grp(inEC);
EC_KEY_set_group(eckey, grp);
EC_GROUP_free(grp);
}
void OSSLECPublicKey::setQ(const ByteString& inQ)
{
ECPublicKey::setQ(inQ);
EC_POINT* pub = OSSL::byteString2pt(inQ, EC_KEY_get0_group(eckey));
EC_KEY_set_public_key(eckey, pub);
EC_POINT_free(pub);
}
// Retrieve the OpenSSL representation of the key
EC_KEY* OSSLECPublicKey::getOSSLKey()
{
return eckey;
}
#endif
|
