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
|
/*
* PK Engine Lookup
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/internal/pk_engine.h>
#include <botan/libstate.h>
#include <botan/engine.h>
namespace Botan {
namespace Engine_Core {
#if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
/*
* Acquire an IF op
*/
IF_Operation* if_op(const BigInt& e, const BigInt& n, const BigInt& d,
const BigInt& p, const BigInt& q, const BigInt& d1,
const BigInt& d2, const BigInt& c)
{
Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
while(const Engine* engine = i.next())
{
IF_Operation* op = engine->if_op(e, n, d, p, q, d1, d2, c);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::if_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_DSA)
/*
* Acquire a DSA op
*/
DSA_Operation* dsa_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
while(const Engine* engine = i.next())
{
DSA_Operation* op = engine->dsa_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::dsa_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
/*
* Acquire a NR op
*/
NR_Operation* nr_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
while(const Engine* engine = i.next())
{
NR_Operation* op = engine->nr_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::nr_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_ELGAMAL)
/*
* Acquire an ElGamal op
*/
ELG_Operation* elg_op(const DL_Group& group, const BigInt& y, const BigInt& x)
{
Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
while(const Engine* engine = i.next())
{
ELG_Operation* op = engine->elg_op(group, y, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::elg_op: Unable to find a working engine");
}
#endif
/*
* Acquire a modular exponentiator
*/
Modular_Exponentiator* mod_exp(const BigInt& n, Power_Mod::Usage_Hints hints)
{
Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
while(const Engine* engine = i.next())
{
Modular_Exponentiator* op = engine->mod_exp(n, hints);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::mod_exp: Unable to find a working engine");
}
}
}
|
