bee2-rs 0.2.1

Bindings for cryptographic library Bee2
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

/*
*******************************************************************************
\file belt_lcl.h
\brief STB 34.101.31 (belt): local definitions
\project bee2 [cryptographic library]
\created 2012.12.18
\version 2020.03.20
\copyright The Bee2 authors
\license Licensed under the Apache License, Version 2.0 (see LICENSE.txt).
*******************************************************************************
*/

#ifndef __BELT_LCL_H
#define __BELT_LCL_H

#include "bee2/core/word.h"
#include "bee2/core/u32.h"

#ifdef __cplusplus
extern "C" {
#endif

/*
*******************************************************************************
Замечание по интерфейсам

Состояния некоторых связок (например, beltHash) содержат память, которую 
не обязательно поддерживать постоянной между обращениями к функциям связки. 
Это -- дополнительный управляемый стек. Можно передавать указатель на эту 
память через дополнительный параметр (stack, а не state), описав предварительно
глубину стека с помощью функций типа _deep. Мы не стали так делать, чтобы 
не усложнять излишне интерфейсы.
*******************************************************************************
*/

/*
*******************************************************************************
Ускорители

Реализованы быстрые операции над блоками и полублоками belt. Блок
представляется либо как [16]octet, либо как [4]u32,
либо как [W_OF_B(128)]word.

Суффикс U32 в именах макросов и функций означает, что данные интерпретируются
как массив u32. Суффикс W означает, что данные интерпретируются как
массив word.
*******************************************************************************
*/

#if (B_PER_W == 16)

#define beltBlockSetZero(block)\
	((word*)(block))[0] = 0,\
	((word*)(block))[1] = 0,\
	((word*)(block))[2] = 0,\
	((word*)(block))[3] = 0,\
	((word*)(block))[4] = 0,\
	((word*)(block))[5] = 0,\
	((word*)(block))[6] = 0,\
	((word*)(block))[7] = 0\

#define beltBlockRevW(block)\
	((word*)(block))[0] = wordRev(((word*)(block))[0]),\
	((word*)(block))[1] = wordRev(((word*)(block))[1]),\
	((word*)(block))[2] = wordRev(((word*)(block))[2]),\
	((word*)(block))[3] = wordRev(((word*)(block))[3]),\
	((word*)(block))[4] = wordRev(((word*)(block))[4]),\
	((word*)(block))[5] = wordRev(((word*)(block))[5]),\
	((word*)(block))[6] = wordRev(((word*)(block))[6]),\
	((word*)(block))[7] = wordRev(((word*)(block))[7])\

#define beltHalfBlockIsZero(block)\
	(((word*)(block))[0] == 0 && ((word*)(block))[1] == 0 &&\
		((word*)(block))[2] == 0 && ((word*)(block))[3] == 0)

#define beltBlockNeg(dest, src)\
	((word*)(dest))[0] = ~((const word*)(src))[0],\
	((word*)(dest))[1] = ~((const word*)(src))[1],\
	((word*)(dest))[2] = ~((const word*)(src))[2],\
	((word*)(dest))[3] = ~((const word*)(src))[3],\
	((word*)(dest))[4] = ~((const word*)(src))[4],\
	((word*)(dest))[5] = ~((const word*)(src))[5],\
	((word*)(dest))[6] = ~((const word*)(src))[6],\
	((word*)(dest))[7] = ~((const word*)(src))[7]\

#define beltBlockXor(dest, src1, src2)\
	((word*)(dest))[0] = ((const word*)(src1))[0] ^ ((const word*)(src2))[0],\
	((word*)(dest))[1] = ((const word*)(src1))[1] ^ ((const word*)(src2))[1],\
	((word*)(dest))[2] = ((const word*)(src1))[2] ^ ((const word*)(src2))[2],\
	((word*)(dest))[3] = ((const word*)(src1))[3] ^ ((const word*)(src2))[3],\
	((word*)(dest))[4] = ((const word*)(src1))[4] ^ ((const word*)(src2))[4],\
	((word*)(dest))[5] = ((const word*)(src1))[5] ^ ((const word*)(src2))[5],\
	((word*)(dest))[6] = ((const word*)(src1))[6] ^ ((const word*)(src2))[6],\
	((word*)(dest))[7] = ((const word*)(src1))[7] ^ ((const word*)(src2))[7]\

#define beltBlockXor2(dest, src)\
	((word*)(dest))[0] ^= ((const word*)(src))[0],\
	((word*)(dest))[1] ^= ((const word*)(src))[1],\
	((word*)(dest))[2] ^= ((const word*)(src))[2],\
	((word*)(dest))[3] ^= ((const word*)(src))[3],\
	((word*)(dest))[4] ^= ((const word*)(src))[4],\
	((word*)(dest))[5] ^= ((const word*)(src))[5],\
	((word*)(dest))[6] ^= ((const word*)(src))[6],\
	((word*)(dest))[7] ^= ((const word*)(src))[7]\

#define beltBlockCopy(dest, src)\
	((word*)(dest))[0] = ((const word*)(src))[0],\
	((word*)(dest))[1] = ((const word*)(src))[1],\
	((word*)(dest))[2] = ((const word*)(src))[2],\
	((word*)(dest))[3] = ((const word*)(src))[3],\
	((word*)(dest))[4] = ((const word*)(src))[4],\
	((word*)(dest))[5] = ((const word*)(src))[5],\
	((word*)(dest))[6] = ((const word*)(src))[6],\
	((word*)(dest))[7] = ((const word*)(src))[7]\

#elif (B_PER_W == 32)

#define beltBlockSetZero(block)\
	((word*)(block))[0] = 0,\
	((word*)(block))[1] = 0,\
	((word*)(block))[2] = 0,\
	((word*)(block))[3] = 0\

#define beltBlockRevW(block)\
	((word*)(block))[0] = wordRev(((word*)(block))[0]),\
	((word*)(block))[1] = wordRev(((word*)(block))[1]),\
	((word*)(block))[2] = wordRev(((word*)(block))[2]),\
	((word*)(block))[3] = wordRev(((word*)(block))[3])\

#define beltHalfBlockIsZero(block)\
	(((word*)(block))[0] == 0 && ((word*)(block))[1] == 0)\

#define beltBlockNeg(dest, src)\
	((word*)(dest))[0] = ~((const word*)(src))[0],\
	((word*)(dest))[1] = ~((const word*)(src))[1],\
	((word*)(dest))[2] = ~((const word*)(src))[2],\
	((word*)(dest))[3] = ~((const word*)(src))[3]\

#define beltBlockXor(dest, src1, src2)\
	((word*)(dest))[0] = ((const word*)(src1))[0] ^ ((const word*)(src2))[0],\
	((word*)(dest))[1] = ((const word*)(src1))[1] ^ ((const word*)(src2))[1],\
	((word*)(dest))[2] = ((const word*)(src1))[2] ^ ((const word*)(src2))[2],\
	((word*)(dest))[3] = ((const word*)(src1))[3] ^ ((const word*)(src2))[3]\

#define beltBlockXor2(dest, src)\
	((word*)(dest))[0] ^= ((const word*)(src))[0],\
	((word*)(dest))[1] ^= ((const word*)(src))[1],\
	((word*)(dest))[2] ^= ((const word*)(src))[2],\
	((word*)(dest))[3] ^= ((const word*)(src))[3]\

#define beltBlockCopy(dest, src)\
	((word*)(dest))[0] = ((const word*)(src))[0],\
	((word*)(dest))[1] = ((const word*)(src))[1],\
	((word*)(dest))[2] = ((const word*)(src))[2],\
	((word*)(dest))[3] = ((const word*)(src))[3]\

#elif (B_PER_W == 64)

#define beltBlockSetZero(block)\
	((word*)(block))[0] = 0,\
	((word*)(block))[1] = 0\

#define beltBlockRevW(block)\
	((word*)(block))[0] = wordRev(((word*)(block))[0]),\
	((word*)(block))[1] = wordRev(((word*)(block))[1])\

#define beltHalfBlockIsZero(block)\
	(((word*)(block))[0] == 0)\

#define beltBlockNeg(dest, src)\
	((word*)(dest))[0] = ~((const word*)(src))[0],\
	((word*)(dest))[1] = ~((const word*)(src))[1]\

#define beltBlockXor(dest, src1, src2)\
	((word*)(dest))[0] = ((const word*)(src1))[0] ^ ((const word*)(src2))[0],\
	((word*)(dest))[1] = ((const word*)(src1))[1] ^ ((const word*)(src2))[1];\

#define beltBlockXor2(dest, src)\
	((word*)(dest))[0] ^= ((const word*)(src))[0],\
	((word*)(dest))[1] ^= ((const word*)(src))[1]\

#define beltBlockCopy(dest, src)\
	((word*)(dest))[0] = ((const word*)(src))[0],\
	((word*)(dest))[1] = ((const word*)(src))[1]\

#else
	#error "Unsupported word size"
#endif // B_PER_W

#define beltBlockRevU32(block)\
	((u32*)(block))[0] = u32Rev(((u32*)(block))[0]),\
	((u32*)(block))[1] = u32Rev(((u32*)(block))[1]),\
	((u32*)(block))[2] = u32Rev(((u32*)(block))[2]),\
	((u32*)(block))[3] = u32Rev(((u32*)(block))[3])\

#define beltBlockIncU32(block)\
	if ((((u32*)(block))[0] += 1) == 0 &&\
		(((u32*)(block))[1] += 1) == 0 &&\
		(((u32*)(block))[2] += 1) == 0)\
		((u32*)(block))[3] += 1\

/*
*******************************************************************************
Состояния CTR и WBL (используются в DWP, KWP и FMT)
*******************************************************************************
*/

typedef struct
{
	u32 key[8];			/*< форматированный ключ */
	u32 ctr[4];			/*< счетчик */
	octet block[16];	/*< блок гаммы */
	size_t reserved;	/*< резерв октетов гаммы */
} belt_ctr_st;

typedef struct
{
	u32 key[8];			/*< форматированный ключ */
	octet block[16];	/*< вспомогательный блок */
	octet sum[16];		/*< вспомогательная сумма блоков */
	word round;			/*< номер такта */
} belt_wbl_st;

/*
*******************************************************************************
Вспомогательные функции
*******************************************************************************
*/

void beltBlockAddBitSizeU32(u32 block[4], size_t count);
void beltHalfBlockAddBitSizeW(word block[W_OF_B(64)], size_t count);
void beltPolyMul(word c[], const word a[], const word b[], void* stack);
size_t beltPolyMul_deep();
void beltBlockMulC(u32 block[4]);



#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* __BELT_LCL_H */