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
|
/*
* ECKAEG implemenation
* (C) 2007 Manuel Hartl, FlexSecure GmbH
* 2007 Falko Strenzke, FlexSecure GmbH
* 2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/eckaeg.h>
#include <botan/numthry.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/secmem.h>
#include <botan/point_gfp.h>
namespace Botan {
void ECKAEG_PublicKey::X509_load_hook()
{
EC_PublicKey::X509_load_hook();
m_eckaeg_core = ECKAEG_Core(domain(), 0, public_point());
}
ECKAEG_PublicKey::ECKAEG_PublicKey(const EC_Domain_Params& dom_par,
const PointGFp& pub_point)
{
domain_params = dom_par;
public_key = pub_point;
if(domain().get_curve() != pub_point.get_curve())
throw Invalid_Argument("ECKAEG_PublicKey: curve mismatch in constructor");
m_eckaeg_core = ECKAEG_Core(domain(), 0, public_point());
}
void ECKAEG_PrivateKey::PKCS8_load_hook(bool generated)
{
EC_PrivateKey::PKCS8_load_hook(generated);
m_eckaeg_core = ECKAEG_Core(domain(), private_value(), public_point());
}
MemoryVector<byte> ECKAEG_PrivateKey::public_value() const
{
return EC2OSP(public_point(), PointGFp::UNCOMPRESSED);
}
ECKAEG_PrivateKey::ECKAEG_PrivateKey(RandomNumberGenerator& rng,
const EC_Domain_Params& dom_pars)
{
domain_params = dom_pars;
generate_private_key(rng);
m_eckaeg_core = ECKAEG_Core(domain(), private_value(), public_point());
}
/**
* Derive a key
*/
SecureVector<byte> ECKAEG_PrivateKey::derive_key(const byte key[],
u32bit key_len) const
{
MemoryVector<byte> key_x(key, key_len); // FIXME: nasty/slow
PointGFp point = OS2ECP(key_x, public_point().get_curve());
return m_eckaeg_core.agree(point);
}
/**
* Derive a key
*/
SecureVector<byte> ECKAEG_PrivateKey::derive_key(const ECKAEG_PublicKey& key) const
{
return m_eckaeg_core.agree(key.public_point());
}
}
|
