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
|
/*
* Algorithm Factory
* (C) 2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_ALGORITHM_FACTORY_H__
#define BOTAN_ALGORITHM_FACTORY_H__
#include <botan/types.h>
#include <string>
#include <vector>
namespace Botan {
/**
* Forward declarations (don't need full definitions here)
*/
class BlockCipher;
class StreamCipher;
class HashFunction;
class MessageAuthenticationCode;
class PBKDF;
template<typename T> class Algorithm_Cache;
class Engine;
/**
* Algorithm Factory
*/
class BOTAN_DLL Algorithm_Factory
{
public:
/**
* Constructor
* @param mf a mutex factory
*/
Algorithm_Factory();
/**
* Destructor
*/
~Algorithm_Factory();
/**
* @param engine to add (Algorithm_Factory takes ownership)
*/
void add_engine(Engine* engine);
/**
* Clear out any cached objects
*/
void clear_caches();
/**
* @param algo_spec the algorithm we are querying
* @returns list of providers of this algorithm
*/
std::vector<std::string> providers_of(const std::string& algo_spec);
/**
* @param algo_spec the algorithm we are setting a provider for
* @param provider the provider we would like to use
*/
void set_preferred_provider(const std::string& algo_spec,
const std::string& provider);
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to const prototype object, ready to clone(), or NULL
*/
const BlockCipher*
prototype_block_cipher(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to freshly created instance of the request algorithm
*/
BlockCipher* make_block_cipher(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo the algorithm to add
* @param provider the provider of this algorithm
*/
void add_block_cipher(BlockCipher* algo, const std::string& provider);
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to const prototype object, ready to clone(), or NULL
*/
const StreamCipher*
prototype_stream_cipher(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to freshly created instance of the request algorithm
*/
StreamCipher* make_stream_cipher(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo the algorithm to add
* @param provider the provider of this algorithm
*/
void add_stream_cipher(StreamCipher* algo, const std::string& provider);
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to const prototype object, ready to clone(), or NULL
*/
const HashFunction*
prototype_hash_function(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to freshly created instance of the request algorithm
*/
HashFunction* make_hash_function(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo the algorithm to add
* @param provider the provider of this algorithm
*/
void add_hash_function(HashFunction* algo, const std::string& provider);
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to const prototype object, ready to clone(), or NULL
*/
const MessageAuthenticationCode*
prototype_mac(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to freshly created instance of the request algorithm
*/
MessageAuthenticationCode* make_mac(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo the algorithm to add
* @param provider the provider of this algorithm
*/
void add_mac(MessageAuthenticationCode* algo,
const std::string& provider);
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to const prototype object, ready to clone(), or NULL
*/
const PBKDF* prototype_pbkdf(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo_spec the algorithm we want
* @param provider the provider we would like to use
* @returns pointer to freshly created instance of the request algorithm
*/
PBKDF* make_pbkdf(const std::string& algo_spec,
const std::string& provider = "");
/**
* @param algo the algorithm to add
* @param provider the provider of this algorithm
*/
void add_pbkdf(PBKDF* algo, const std::string& provider);
/**
* An iterator for the engines in this factory
* @deprecated Avoid in new code
*/
class BOTAN_DLL Engine_Iterator
{
public:
/**
* @return next engine in the sequence
*/
Engine* next() { return af.get_engine_n(n++); }
/**
* @param a an algorithm factory
*/
Engine_Iterator(const Algorithm_Factory& a) :
af(a) { n = 0; }
private:
const Algorithm_Factory& af;
size_t n;
};
friend class Engine_Iterator;
private:
Algorithm_Factory(const Algorithm_Factory&) {}
Algorithm_Factory& operator=(const Algorithm_Factory&)
{ return (*this); }
Engine* get_engine_n(size_t n) const;
std::vector<Engine*> engines;
Algorithm_Cache<BlockCipher>* block_cipher_cache;
Algorithm_Cache<StreamCipher>* stream_cipher_cache;
Algorithm_Cache<HashFunction>* hash_cache;
Algorithm_Cache<MessageAuthenticationCode>* mac_cache;
Algorithm_Cache<PBKDF>* pbkdf_cache;
};
}
#endif
|
