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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*************************************************
* Engine Header File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#ifndef BOTAN_ENGINE_H__
#define BOTAN_ENGINE_H__
#include <botan/block_cipher.h>
#include <botan/stream_cipher.h>
#include <botan/hash.h>
#include <botan/mac.h>
#include <botan/mutex.h>
#include <botan/pow_mod.h>
#include <botan/basefilt.h>
#include <utility>
#include <map>
#if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
#include <botan/if_op.h>
#endif
#if defined(BOTAN_HAS_DSA)
#include <botan/dsa_op.h>
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
#include <botan/dh_op.h>
#endif
#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
#include <botan/nr_op.h>
#endif
#if defined(BOTAN_HAS_ELGAMAL)
#include <botan/elg_op.h>
#endif
#if defined(BOTAN_HAS_ECDSA)
#include <botan/ecdsa_op.h>
#include <botan/ec_dompar.h>
#endif
#if defined(BOTAN_HAS_ECKAEG)
#include <botan/eckaeg_op.h>
#include <botan/ec_dompar.h>
#endif
namespace Botan {
/*************************************************
* Engine Base Class *
*************************************************/
class BOTAN_DLL Engine
{
public:
template<typename T>
class BOTAN_DLL Algorithm_Cache
{
public:
virtual T* get(const std::string&) const = 0;
virtual void add(T* algo, const std::string& = "") const = 0;
virtual ~Algorithm_Cache() {}
};
#if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
virtual IF_Operation* if_op(const BigInt&, const BigInt&, const BigInt&,
const BigInt&, const BigInt&, const BigInt&,
const BigInt&, const BigInt&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_DSA)
virtual DSA_Operation* dsa_op(const DL_Group&, const BigInt&,
const BigInt&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
virtual NR_Operation* nr_op(const DL_Group&, const BigInt&,
const BigInt&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_ELGAMAL)
virtual ELG_Operation* elg_op(const DL_Group&, const BigInt&,
const BigInt&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
virtual DH_Operation* dh_op(const DL_Group&, const BigInt&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_ECDSA)
virtual ECDSA_Operation* ecdsa_op(const EC_Domain_Params&,
const BigInt&,
const PointGFp&) const
{ return 0; }
#endif
#if defined(BOTAN_HAS_ECKAEG)
virtual ECKAEG_Operation* eckaeg_op(const EC_Domain_Params&,
const BigInt&,
const PointGFp&) const
{ return 0; }
#endif
virtual Modular_Exponentiator* mod_exp(const BigInt&,
Power_Mod::Usage_Hints) const
{ return 0; }
virtual Keyed_Filter* get_cipher(const std::string&, Cipher_Dir)
{ return 0; }
const BlockCipher* block_cipher(const std::string&) const;
const StreamCipher* stream_cipher(const std::string&) const;
const HashFunction* hash(const std::string&) const;
const MessageAuthenticationCode* mac(const std::string&) const;
const class S2K* s2k(const std::string&) const;
const class BlockCipherModePaddingMethod*
bc_pad(const std::string&) const;
virtual bool can_add_algorithms() { return false; }
void add_algorithm(BlockCipher*) const;
void add_algorithm(StreamCipher*) const;
void add_algorithm(HashFunction*) const;
void add_algorithm(MessageAuthenticationCode*) const;
void add_algorithm(class S2K*) const;
void add_algorithm(class BlockCipherModePaddingMethod*) const;
Engine();
virtual ~Engine();
private:
virtual BlockCipher* find_block_cipher(const std::string&) const
{ return 0; }
virtual StreamCipher* find_stream_cipher(const std::string&) const
{ return 0; }
virtual HashFunction* find_hash(const std::string&) const
{ return 0; }
virtual MessageAuthenticationCode* find_mac(const std::string&) const
{ return 0; }
virtual class S2K* find_s2k(const std::string&) const
{ return 0; }
virtual class BlockCipherModePaddingMethod*
find_bc_pad(const std::string&) const
{ return 0; }
template<typename T>
const T* lookup_algo(const Algorithm_Cache<T>* cache,
const std::string& name,
const Engine* engine,
T* (Engine::*find)(const std::string&) const) const
{
T* algo = cache->get(name);
if(!algo)
{
algo = (engine->*find)(name);
if(algo)
cache->add(algo, name);
}
return algo;
}
Algorithm_Cache<BlockCipher>* cache_of_bc;
Algorithm_Cache<StreamCipher>* cache_of_sc;
Algorithm_Cache<HashFunction>* cache_of_hf;
Algorithm_Cache<MessageAuthenticationCode>* cache_of_mac;
Algorithm_Cache<BlockCipherModePaddingMethod>* cache_of_bc_pad;
Algorithm_Cache<S2K>* cache_of_s2k;
};
namespace Engine_Core {
/*************************************************
* Get an operation from an Engine *
*************************************************/
Modular_Exponentiator* mod_exp(const BigInt&, Power_Mod::Usage_Hints);
#if defined(BOTAN_HAS_IF_PUBLIC_KEY_FAMILY)
IF_Operation* if_op(const BigInt&, const BigInt&, const BigInt&,
const BigInt&, const BigInt&, const BigInt&,
const BigInt&, const BigInt&);
#endif
#if defined(BOTAN_HAS_DSA)
DSA_Operation* dsa_op(const DL_Group&, const BigInt&, const BigInt&);
#endif
#if defined(BOTAN_HAS_NYBERG_RUEPPEL)
NR_Operation* nr_op(const DL_Group&, const BigInt&, const BigInt&);
#endif
#if defined(BOTAN_HAS_ELGAMAL)
ELG_Operation* elg_op(const DL_Group&, const BigInt&, const BigInt&);
#endif
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
DH_Operation* dh_op(const DL_Group&, const BigInt&);
#endif
#if defined(BOTAN_HAS_ECDSA)
ECDSA_Operation* ecdsa_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key);
#endif
#if defined(BOTAN_HAS_ECKAEG)
ECKAEG_Operation* eckaeg_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key);
#endif
}
}
#endif
|
