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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
|
/*************************************************
* Engine Source File *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#include <botan/engine.h>
#include <botan/libstate.h>
#include <botan/lookup.h>
#include <botan/look_add.h>
#include <botan/eng_def.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)
{
Library_State::Engine_Iterator i(global_state());
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)
{
Library_State::Engine_Iterator i(global_state());
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)
{
Library_State::Engine_Iterator i(global_state());
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)
{
Library_State::Engine_Iterator i(global_state());
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
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
/*************************************************
* Acquire a DH op *
*************************************************/
DH_Operation* dh_op(const DL_Group& group, const BigInt& x)
{
Library_State::Engine_Iterator i(global_state());
while(const Engine* engine = i.next())
{
DH_Operation* op = engine->dh_op(group, x);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::dh_op: Unable to find a working engine");
}
#endif
#if defined(BOTAN_HAS_ECDSA)
/*************************************************
* Acquire an ECDSA op *
*************************************************/
ECDSA_Operation* ecdsa_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key)
{
Library_State::Engine_Iterator i(global_state());
while(const Engine* engine = i.next())
{
ECDSA_Operation* op = engine->ecdsa_op(dom_pars, priv_key, pub_key);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::ecdsa_op: Unable to find a working engine");
}
/*************************************************
* Acquire a ECKAEG op *
*************************************************/
ECKAEG_Operation* eckaeg_op(const EC_Domain_Params& dom_pars,
const BigInt& priv_key,
const PointGFp& pub_key)
{
Library_State::Engine_Iterator i(global_state());
while(const Engine* engine = i.next())
{
ECKAEG_Operation* op = engine->eckaeg_op(dom_pars, priv_key, pub_key);
if(op)
return op;
}
throw Lookup_Error("Engine_Core::eckaeg_op: Unable to find a working engine");
}
#endif
/*************************************************
* Acquire a modular exponentiator *
*************************************************/
Modular_Exponentiator* mod_exp(const BigInt& n, Power_Mod::Usage_Hints hints)
{
Library_State::Engine_Iterator i(global_state());
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");
}
}
/*************************************************
* Acquire a block cipher *
*************************************************/
const BlockCipher* retrieve_block_cipher(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const BlockCipher* algo = engine->block_cipher(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Acquire a stream cipher *
*************************************************/
const StreamCipher* retrieve_stream_cipher(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const StreamCipher* algo = engine->stream_cipher(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Acquire a hash function *
*************************************************/
const HashFunction* retrieve_hash(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const HashFunction* algo = engine->hash(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Acquire an authentication code *
*************************************************/
const MessageAuthenticationCode* retrieve_mac(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const MessageAuthenticationCode* algo = engine->mac(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Acquire a string-to-key algorithm *
*************************************************/
const S2K* retrieve_s2k(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const S2K* algo = engine->s2k(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Retrieve a block cipher padding method *
*************************************************/
const BlockCipherModePaddingMethod* retrieve_bc_pad(Library_State& libstate,
const std::string& name)
{
Library_State::Engine_Iterator i(libstate);
while(const Engine* engine = i.next())
{
const BlockCipherModePaddingMethod* algo = engine->bc_pad(name);
if(algo)
return algo;
}
return 0;
}
/*************************************************
* Add a new block cipher *
*************************************************/
void add_algorithm(Library_State& libstate, BlockCipher* algo)
{
Library_State::Engine_Iterator i(libstate);
while(Engine* engine_base = i.next())
{
Default_Engine* engine = dynamic_cast<Default_Engine*>(engine_base);
if(engine)
{
engine->add_algorithm(algo);
return;
}
}
throw Invalid_State("add_algorithm: Couldn't find the Default_Engine");
}
/*************************************************
* Add a new stream cipher *
*************************************************/
void add_algorithm(Library_State& libstate, StreamCipher* algo)
{
Library_State::Engine_Iterator i(libstate);
while(Engine* engine_base = i.next())
{
Default_Engine* engine = dynamic_cast<Default_Engine*>(engine_base);
if(engine)
{
engine->add_algorithm(algo);
return;
}
}
throw Invalid_State("add_algorithm: Couldn't find the Default_Engine");
}
/*************************************************
* Add a new hash function *
*************************************************/
void add_algorithm(Library_State& libstate, HashFunction* algo)
{
Library_State::Engine_Iterator i(libstate);
while(Engine* engine_base = i.next())
{
Default_Engine* engine = dynamic_cast<Default_Engine*>(engine_base);
if(engine)
{
engine->add_algorithm(algo);
return;
}
}
throw Invalid_State("add_algorithm: Couldn't find the Default_Engine");
}
/*************************************************
* Add a new authentication code *
*************************************************/
void add_algorithm(Library_State& libstate,
MessageAuthenticationCode* algo)
{
Library_State::Engine_Iterator i(libstate);
while(Engine* engine_base = i.next())
{
Default_Engine* engine = dynamic_cast<Default_Engine*>(engine_base);
if(engine)
{
engine->add_algorithm(algo);
return;
}
}
throw Invalid_State("add_algorithm: Couldn't find the Default_Engine");
}
/*************************************************
* Add a padding method to the lookup table *
*************************************************/
void add_algorithm(Library_State& libstate,
BlockCipherModePaddingMethod* algo)
{
Library_State::Engine_Iterator i(libstate);
while(Engine* engine_base = i.next())
{
Default_Engine* engine = dynamic_cast<Default_Engine*>(engine_base);
if(engine)
{
engine->add_algorithm(algo);
return;
}
}
throw Invalid_State("add_algorithm: Couldn't find the Default_Engine");
}
/*************************************************
* Get a cipher object *
*************************************************/
Keyed_Filter* get_cipher(const std::string& algo_spec,
Cipher_Dir direction)
{
Library_State::Engine_Iterator i(global_state());
while(Engine* engine = i.next())
{
Keyed_Filter* algo = engine->get_cipher(algo_spec, direction);
if(algo)
return algo;
}
throw Algorithm_Not_Found(algo_spec);
}
/*************************************************
* Get a cipher object *
*************************************************/
Keyed_Filter* get_cipher(const std::string& algo_spec,
const SymmetricKey& key,
const InitializationVector& iv,
Cipher_Dir direction)
{
Keyed_Filter* cipher = get_cipher(algo_spec, direction);
cipher->set_key(key);
if(iv.length())
cipher->set_iv(iv);
return cipher;
}
/*************************************************
* Get a cipher object *
*************************************************/
Keyed_Filter* get_cipher(const std::string& algo_spec,
const SymmetricKey& key,
Cipher_Dir direction)
{
return get_cipher(algo_spec,
key, InitializationVector(), direction);
}
}
|
