Crypto++ 8.9
Free C++ class library of cryptographic schemes
threefish.cpp
1// threefish.cpp - written and placed in the public domain by Jeffrey Walton
2// Based on public domain code by Keru Kuro. Kuro's code is
3// available at http://cppcrypto.sourceforge.net/.
4
5#include "pch.h"
6#include "config.h"
7
8#include "threefish.h"
9#include "misc.h"
10#include "algparam.h"
11#include "argnames.h"
12
13ANONYMOUS_NAMESPACE_BEGIN
14
15using CryptoPP::word32;
16using CryptoPP::word64;
17using CryptoPP::rotlConstant;
18using CryptoPP::rotrConstant;
19using CryptoPP::rotlVariable;
20using CryptoPP::rotrVariable;
21
22template <unsigned int C0, unsigned int C1>
23inline void G256(word64& G0, word64& G1, word64& G2, word64& G3)
24{
25 G0 += G1;
26 G1 = rotlConstant<C0>(G1) ^ G0;
27 G2 += G3;
28 G3 = rotlConstant<C1>(G3) ^ G2;
29}
30
31template <unsigned int C0, unsigned int C1>
32inline void IG256(word64& G0, word64& G1, word64& G2, word64& G3)
33{
34 G3 = rotrConstant<C1>(G3 ^ G2);
35 G2 -= G3;
36 G1 = rotrConstant<C0>(G1 ^ G0);
37 G0 -= G1;
38}
39
40#define KS256(r) \
41 G0 += m_rkey[(r + 1) % 5]; \
42 G1 += m_rkey[(r + 2) % 5] + m_tweak[(r + 1) % 3]; \
43 G2 += m_rkey[(r + 3) % 5] + m_tweak[(r + 2) % 3]; \
44 G3 += m_rkey[(r + 4) % 5] + r + 1;
45
46#define IKS256(r) \
47 G0 -= m_rkey[(r + 1) % 5]; \
48 G1 -= (m_rkey[(r + 2) % 5] + m_tweak[(r + 1) % 3]); \
49 G2 -= (m_rkey[(r + 3) % 5] + m_tweak[(r + 2) % 3]); \
50 G3 -= (m_rkey[(r + 4) % 5] + r + 1);
51
52#define G256x8(r) \
53 G256<14, 16>(G0, G1, G2, G3); \
54 G256<52, 57>(G0, G3, G2, G1); \
55 G256<23, 40>(G0, G1, G2, G3); \
56 G256< 5, 37>(G0, G3, G2, G1); \
57 KS256(r); \
58 G256<25, 33>(G0, G1, G2, G3); \
59 G256<46, 12>(G0, G3, G2, G1); \
60 G256<58, 22>(G0, G1, G2, G3); \
61 G256<32, 32>(G0, G3, G2, G1); \
62 KS256(r + 1);
63
64#define IG256x8(r) \
65 IG256<32, 32>(G0, G3, G2, G1); \
66 IG256<58, 22>(G0, G1, G2, G3); \
67 IG256<46, 12>(G0, G3, G2, G1); \
68 IG256<25, 33>(G0, G1, G2, G3); \
69 IKS256(r); \
70 IG256< 5, 37>(G0, G3, G2, G1); \
71 IG256<23, 40>(G0, G1, G2, G3); \
72 IG256<52, 57>(G0, G3, G2, G1); \
73 IG256<14, 16>(G0, G1, G2, G3); \
74 IKS256(r - 1);
75
76///////////////////
77
78template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3>
79inline void G512(word64& G0, word64& G1, word64& G2, word64& G3, word64& G4, word64& G5, word64& G6, word64& G7)
80{
81 G0 += G1;
82 G1 = rotlConstant<C0>(G1) ^ G0;
83 G2 += G3;
84 G3 = rotlConstant<C1>(G3) ^ G2;
85 G4 += G5;
86 G5 = rotlConstant<C2>(G5) ^ G4;
87 G6 += G7;
88 G7 = rotlConstant<C3>(G7) ^ G6;
89}
90
91template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3>
92inline void IG512(word64& G0, word64& G1, word64& G2, word64& G3, word64& G4, word64& G5, word64& G6, word64& G7)
93{
94 G7 = rotrConstant<C3>(G7 ^ G6);
95 G6 -= G7;
96 G5 = rotrConstant<C2>(G5 ^ G4);
97 G4 -= G5;
98 G3 = rotrConstant<C1>(G3 ^ G2);
99 G2 -= G3;
100 G1 = rotrConstant<C0>(G1 ^ G0);
101 G0 -= G1;
102}
103
104#define KS512(r) \
105 G0 += m_rkey[(r + 1) % 9]; \
106 G1 += m_rkey[(r + 2) % 9]; \
107 G2 += m_rkey[(r + 3) % 9]; \
108 G3 += m_rkey[(r + 4) % 9]; \
109 G4 += m_rkey[(r + 5) % 9]; \
110 G5 += m_rkey[(r + 6) % 9] + m_tweak[(r + 1) % 3]; \
111 G6 += m_rkey[(r + 7) % 9] + m_tweak[(r + 2) % 3]; \
112 G7 += m_rkey[(r + 8) % 9] + r + 1;
113
114#define IKS512(r) \
115 G0 -= m_rkey[(r + 1) % 9]; \
116 G1 -= m_rkey[(r + 2) % 9]; \
117 G2 -= m_rkey[(r + 3) % 9]; \
118 G3 -= m_rkey[(r + 4) % 9]; \
119 G4 -= m_rkey[(r + 5) % 9]; \
120 G5 -= (m_rkey[(r + 6) % 9] + m_tweak[(r + 1) % 3]); \
121 G6 -= (m_rkey[(r + 7) % 9] + m_tweak[(r + 2) % 3]); \
122 G7 -= (m_rkey[(r + 8) % 9] + r + 1);
123
124#define IG512x8(r) \
125 IG512< 8, 35, 56, 22>(G6, G1, G0, G7, G2, G5, G4, G3); \
126 IG512<25, 29, 39, 43>(G4, G1, G6, G3, G0, G5, G2, G7); \
127 IG512<13, 50, 10, 17>(G2, G1, G4, G7, G6, G5, G0, G3); \
128 IG512<39, 30, 34, 24>(G0, G1, G2, G3, G4, G5, G6, G7); \
129 IKS512(r) \
130 IG512<44, 9, 54, 56>(G6, G1, G0, G7, G2, G5, G4, G3); \
131 IG512<17, 49, 36, 39>(G4, G1, G6, G3, G0, G5, G2, G7); \
132 IG512<33, 27, 14, 42>(G2, G1, G4, G7, G6, G5, G0, G3); \
133 IG512<46, 36, 19, 37>(G0, G1, G2, G3, G4, G5, G6, G7); \
134 IKS512(r - 1)
135
136#define G512x8(r) \
137 G512<46, 36, 19, 37>(G0, G1, G2, G3, G4, G5, G6, G7); \
138 G512<33, 27, 14, 42>(G2, G1, G4, G7, G6, G5, G0, G3); \
139 G512<17, 49, 36, 39>(G4, G1, G6, G3, G0, G5, G2, G7); \
140 G512<44, 9, 54, 56>(G6, G1, G0, G7, G2, G5, G4, G3); \
141 KS512(r) \
142 G512<39, 30, 34, 24>(G0, G1, G2, G3, G4, G5, G6, G7); \
143 G512<13, 50, 10, 17>(G2, G1, G4, G7, G6, G5, G0, G3); \
144 G512<25, 29, 39, 43>(G4, G1, G6, G3, G0, G5, G2, G7); \
145 G512< 8, 35, 56, 22>(G6, G1, G0, G7, G2, G5, G4, G3); \
146 KS512(r + 1)
147
148///////////////////
149
150template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3>
151inline void G1024A(word64& G0, word64& G1, word64& G2, word64& G3,
152 word64& G4, word64& G5, word64& G6, word64& G7)
153{
154 G0 += G1;
155 G1 = rotlConstant<C0>(G1) ^ G0;
156 G2 += G3;
157 G3 = rotlConstant<C1>(G3) ^ G2;
158 G4 += G5;
159 G5 = rotlConstant<C2>(G5) ^ G4;
160 G6 += G7;
161 G7 = rotlConstant<C3>(G7) ^ G6;
162}
163
164template <unsigned int C4, unsigned int C5, unsigned int C6, unsigned int C7>
165inline void G1024B(word64& G8, word64& G9, word64& G10, word64& G11,
166 word64& G12, word64& G13, word64& G14, word64& G15)
167{
168 G8 += G9;
169 G9 = rotlConstant<C4>(G9) ^ G8;
170 G10 += G11;
171 G11 = rotlConstant<C5>(G11) ^ G10;
172 G12 += G13;
173 G13 = rotlConstant<C6>(G13) ^ G12;
174 G14 += G15;
175 G15 = rotlConstant<C7>(G15) ^ G14;
176}
177
178template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3,
179 unsigned int C4, unsigned int C5, unsigned int C6, unsigned int C7>
180inline void G1024(word64& G0, word64& G1, word64& G2, word64& G3, word64& G4, word64& G5,
181 word64& G6, word64& G7, word64& G8, word64& G9, word64& G10, word64& G11, word64& G12,
182 word64& G13, word64& G14, word64& G15)
183{
184 // The extra gyrations promote inlining. Without it Threefish1024 looses 10 cpb.
185 G1024A<C0, C1, C2, C3>(G0, G1, G2, G3, G4, G5, G6, G7);
186 G1024B<C4, C5, C6, C7>(G8, G9, G10, G11, G12, G13, G14, G15);
187}
188
189template <unsigned int C4, unsigned int C5, unsigned int C6, unsigned int C7>
190inline void IG1024A(word64& G8, word64& G9, word64& G10, word64& G11,
191 word64& G12, word64& G13, word64& G14, word64& G15)
192{
193 G15 = rotrConstant<C7>(G15 ^ G14);
194 G14 -= G15;
195 G13 = rotrConstant<C6>(G13 ^ G12);
196 G12 -= G13;
197 G11 = rotrConstant<C5>(G11 ^ G10);
198 G10 -= G11;
199 G9 = rotrConstant<C4>(G9 ^ G8);
200 G8 -= G9;
201}
202
203template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3>
204inline void IG1024B(word64& G0, word64& G1, word64& G2, word64& G3,
205 word64& G4, word64& G5, word64& G6, word64& G7)
206{
207 G7 = rotrConstant<C3>(G7 ^ G6);
208 G6 -= G7;
209 G5 = rotrConstant<C2>(G5 ^ G4);
210 G4 -= G5;
211 G3 = rotrConstant<C1>(G3 ^ G2);
212 G2 -= G3;
213 G1 = rotrConstant<C0>(G1 ^ G0);
214 G0 -= G1;
215}
216
217template <unsigned int C0, unsigned int C1, unsigned int C2, unsigned int C3,
218 unsigned int C4, unsigned int C5, unsigned int C6, unsigned int C7>
219inline void IG1024(word64& G0, word64& G1, word64& G2, word64& G3, word64& G4, word64& G5,
220 word64& G6, word64& G7, word64& G8, word64& G9, word64& G10, word64& G11, word64& G12,
221 word64& G13, word64& G14, word64& G15)
222{
223 // The extra gyrations promote inlining. Without it Threefish1024 looses 10 cpb.
224 IG1024A<C4, C5, C6, C7>(G8, G9, G10, G11, G12, G13, G14, G15);
225 IG1024B<C0, C1, C2, C3>(G0, G1, G2, G3, G4, G5, G6, G7);
226}
227
228#define KS1024(r) \
229 G0 += m_rkey[(r + 1) % 17]; \
230 G1 += m_rkey[(r + 2) % 17]; \
231 G2 += m_rkey[(r + 3) % 17]; \
232 G3 += m_rkey[(r + 4) % 17]; \
233 G4 += m_rkey[(r + 5) % 17]; \
234 G5 += m_rkey[(r + 6) % 17]; \
235 G6 += m_rkey[(r + 7) % 17]; \
236 G7 += m_rkey[(r + 8) % 17]; \
237 G8 += m_rkey[(r + 9) % 17]; \
238 G9 += m_rkey[(r + 10) % 17]; \
239 G10 += m_rkey[(r + 11) % 17]; \
240 G11 += m_rkey[(r + 12) % 17]; \
241 G12 += m_rkey[(r + 13) % 17]; \
242 G13 += m_rkey[(r + 14) % 17] + m_tweak[(r + 1) % 3]; \
243 G14 += m_rkey[(r + 15) % 17] + m_tweak[(r + 2) % 3]; \
244 G15 += m_rkey[(r + 16) % 17] + r + 1;
245
246#define IKS1024(r) \
247 G0 -= m_rkey[(r + 1) % 17]; \
248 G1 -= m_rkey[(r + 2) % 17]; \
249 G2 -= m_rkey[(r + 3) % 17]; \
250 G3 -= m_rkey[(r + 4) % 17]; \
251 G4 -= m_rkey[(r + 5) % 17]; \
252 G5 -= m_rkey[(r + 6) % 17]; \
253 G6 -= m_rkey[(r + 7) % 17]; \
254 G7 -= m_rkey[(r + 8) % 17]; \
255 G8 -= m_rkey[(r + 9) % 17]; \
256 G9 -= m_rkey[(r + 10) % 17]; \
257 G10 -= m_rkey[(r + 11) % 17]; \
258 G11 -= m_rkey[(r + 12) % 17]; \
259 G12 -= m_rkey[(r + 13) % 17]; \
260 G13 -= (m_rkey[(r + 14) % 17] + m_tweak[(r + 1) % 3]); \
261 G14 -= (m_rkey[(r + 15) % 17] + m_tweak[(r + 2) % 3]); \
262 G15 -= (m_rkey[(r + 16) % 17] + r + 1);
263
264#define G1024x8(r) \
265 G1024A<24, 13, 8, 47>(G0, G1, G2, G3, G4, G5, G6, G7); \
266 G1024B< 8, 17, 22, 37>(G8, G9, G10, G11, G12, G13, G14, G15); \
267 G1024A<38, 19, 10, 55>(G0, G9, G2, G13, G6, G11, G4, G15); \
268 G1024B<49, 18, 23, 52>(G10, G7, G12, G3, G14, G5, G8, G1); \
269 G1024A<33, 4, 51, 13>(G0, G7, G2, G5, G4, G3, G6, G1); \
270 G1024B<34, 41, 59, 17>(G12, G15, G14, G13, G8, G11, G10, G9); \
271 G1024A< 5, 20, 48, 41>(G0, G15, G2, G11, G6, G13, G4, G9); \
272 G1024B<47, 28, 16, 25>(G14, G1, G8, G5, G10, G3, G12, G7); \
273 KS1024(r); \
274 G1024A<41, 9, 37, 31>(G0, G1, G2, G3, G4, G5, G6, G7); \
275 G1024B<12, 47, 44, 30>(G8, G9, G10, G11, G12, G13, G14, G15); \
276 G1024A<16, 34, 56, 51>(G0, G9, G2, G13, G6, G11, G4, G15); \
277 G1024B< 4, 53, 42, 41>(G10, G7, G12, G3, G14, G5, G8, G1); \
278 G1024A<31, 44, 47, 46>(G0, G7, G2, G5, G4, G3, G6, G1); \
279 G1024B<19, 42, 44, 25>(G12, G15, G14, G13, G8, G11, G10, G9); \
280 G1024A< 9, 48, 35, 52>(G0, G15, G2, G11, G6, G13, G4, G9); \
281 G1024B<23, 31, 37, 20>(G14, G1, G8, G5, G10, G3, G12, G7); \
282 KS1024(r + 1);
283
284#define IG1024x8(r) \
285 IG1024A< 9, 48, 35, 52>(G0, G15, G2, G11, G6, G13, G4, G9); \
286 IG1024B<23, 31, 37, 20>(G14, G1, G8, G5, G10, G3, G12, G7); \
287 IG1024A<31, 44, 47, 46>(G0, G7, G2, G5, G4, G3, G6, G1); \
288 IG1024B<19, 42, 44, 25>(G12, G15, G14, G13, G8, G11, G10, G9); \
289 IG1024A<16, 34, 56, 51>(G0, G9, G2, G13, G6, G11, G4, G15); \
290 IG1024B< 4, 53, 42, 41>(G10, G7, G12, G3, G14, G5, G8, G1); \
291 IG1024A<41, 9, 37, 31>(G0, G1, G2, G3, G4, G5, G6, G7); \
292 IG1024B<12, 47, 44, 30>(G8, G9, G10, G11, G12, G13, G14, G15); \
293 IKS1024(r); \
294 IG1024A< 5, 20, 48, 41>(G0, G15, G2, G11, G6, G13, G4, G9); \
295 IG1024B<47, 28, 16, 25>(G14, G1, G8, G5, G10, G3, G12, G7); \
296 IG1024A<33, 4, 51, 13>(G0, G7, G2, G5, G4, G3, G6, G1); \
297 IG1024B<34, 41, 59, 17>(G12, G15, G14, G13, G8, G11, G10, G9); \
298 IG1024A<38, 19, 10, 55>(G0, G9, G2, G13, G6, G11, G4, G15); \
299 IG1024B<49, 18, 23, 52>(G10, G7, G12, G3, G14, G5, G8, G1); \
300 IG1024A<24, 13, 8, 47>(G0, G1, G2, G3, G4, G5, G6, G7); \
301 IG1024B< 8, 17, 22, 37>(G8, G9, G10, G11, G12, G13, G14, G15); \
302 IKS1024(r - 1);
303
304ANONYMOUS_NAMESPACE_END
305
306///////////////////////////////////////////////////////////////////////////////
307///////////////////////////////////////////////////////////////////////////////
308
309NAMESPACE_BEGIN(CryptoPP)
310
311void Threefish256::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params)
312{
313 // Blocksize is Keylength for Threefish
314 CRYPTOPP_ASSERT(keyLength == KEYLENGTH);
315
316 m_rkey.New(5);
317 m_wspace.New(4);
318
319 GetUserKey(LITTLE_ENDIAN_ORDER, m_rkey.begin(), 4, userKey, keyLength);
320 m_rkey[4] = W64LIT(0x1BD11BDAA9FC1A22) ^ m_rkey[0] ^ m_rkey[1] ^ m_rkey[2] ^ m_rkey[3];
321
322 SetTweak(params);
323}
324
325void Threefish256::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
326{
327 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
328
329 // Reverse bytes on BigEndian; align pointer on LittleEndian
330 typedef GetBlock<word64, LittleEndian, false> InBlock;
331 InBlock iblk(inBlock);
332 iblk(G0)(G1)(G2)(G3);
333
334 G0 += m_rkey[0]; G1 += m_rkey[1]; G2 += m_rkey[2];
335 G3 += m_rkey[3]; G1 += m_tweak[0]; G2 += m_tweak[1];
336
337 G256x8(0); G256x8(2); G256x8(4); G256x8(6); G256x8(8);
338 G256x8(10); G256x8(12); G256x8(14); G256x8(16);
339
340 // Reverse bytes on BigEndian; align pointer on LittleEndian
341 typedef PutBlock<word64, LittleEndian, false> OutBlock;
342 OutBlock oblk(xorBlock, outBlock);
343 oblk(G0)(G1)(G2)(G3);
344}
345
346void Threefish256::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
347{
348 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
349
350 // Reverse bytes on BigEndian; align pointer on LittleEndian
351 typedef GetBlock<word64, LittleEndian, false> InBlock;
352 InBlock iblk(inBlock);
353 iblk(G0)(G1)(G2)(G3);
354
355 G0 -= m_rkey[3]; G1 -= m_rkey[4]; G2 -= m_rkey[0]; G3 -= m_rkey[1];
356 G1 -= m_tweak[0]; G2 -= m_tweak[1]; G3 -= 18;
357
358 IG256x8(16); IG256x8(14); IG256x8(12); IG256x8(10);
359 IG256x8(8); IG256x8(6); IG256x8(4); IG256x8(2); IG256x8(0);
360
361 // Reverse bytes on BigEndian; align pointer on LittleEndian
362 typedef PutBlock<word64, LittleEndian, false> OutBlock;
363 OutBlock oblk(xorBlock, outBlock);
364 oblk(G0)(G1)(G2)(G3);
365}
366
367/////////////////////////////////////////////////////////////////
368
369void Threefish512::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params)
370{
371 // Blocksize is Keylength for Threefish
372 CRYPTOPP_ASSERT(keyLength == KEYLENGTH);
373
374 m_rkey.New(9);
375 m_wspace.New(8);
376
377 GetUserKey(LITTLE_ENDIAN_ORDER, m_rkey.begin(), 8, userKey, keyLength);
378 m_rkey[8] = W64LIT(0x1BD11BDAA9FC1A22) ^ m_rkey[0] ^ m_rkey[1] ^ m_rkey[2] ^ m_rkey[3] ^
379 m_rkey[4] ^ m_rkey[5] ^ m_rkey[6] ^ m_rkey[7];
380
381 SetTweak(params);
382}
383
384void Threefish512::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
385{
386 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
387 word64 &G4=m_wspace[4], &G5=m_wspace[5], &G6=m_wspace[6], &G7=m_wspace[7];
388
389 // Reverse bytes on BigEndian; align pointer on LittleEndian
390 typedef GetBlock<word64, LittleEndian, false> InBlock;
391 InBlock iblk(inBlock);
392 iblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7);
393
394 // 34 integer instructions total
395 G0 += m_rkey[0]; G1 += m_rkey[1]; G2 += m_rkey[2]; G3 += m_rkey[3];
396 G4 += m_rkey[4]; G5 += m_rkey[5]; G6 += m_rkey[6]; G7 += m_rkey[7];
397 G5 += m_tweak[0]; G6 += m_tweak[1];
398
399 G512x8(0); G512x8(2); G512x8(4); G512x8(6); G512x8(8);
400 G512x8(10); G512x8(12); G512x8(14); G512x8(16);
401
402 // Reverse bytes on BigEndian; align pointer on LittleEndian
403 typedef PutBlock<word64, LittleEndian, false> OutBlock;
404 OutBlock oblk(xorBlock, outBlock);
405 oblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7);
406}
407
408void Threefish512::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
409{
410 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
411 word64 &G4=m_wspace[4], &G5=m_wspace[5], &G6=m_wspace[6], &G7=m_wspace[7];
412
413 // Reverse bytes on BigEndian; align pointer on LittleEndian
414 typedef GetBlock<word64, LittleEndian, false> InBlock;
415 InBlock iblk(inBlock);
416 iblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7);
417
418 G0 -= m_rkey[0]; G1 -= m_rkey[1]; G2 -= m_rkey[2]; G3 -= m_rkey[3];
419 G4 -= m_rkey[4]; G5 -= m_rkey[5]; G6 -= m_rkey[6]; G7 -= m_rkey[7];
420 G5 -= m_tweak[0]; G6 -= m_tweak[1]; G7 -= 18;
421
422 IG512x8(16); IG512x8(14); IG512x8(12); IG512x8(10);
423 IG512x8(8); IG512x8(6); IG512x8(4); IG512x8(2); IG512x8(0);
424
425 // Reverse bytes on BigEndian; align pointer on LittleEndian
426 typedef PutBlock<word64, LittleEndian, false> OutBlock;
427 OutBlock oblk(xorBlock, outBlock);
428 oblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7);
429}
430
431/////////////////////////////////////////////////////////////////
432
433void Threefish1024::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params)
434{
435 // Blocksize is Keylength for Threefish
436 CRYPTOPP_ASSERT(keyLength == KEYLENGTH);
437
438 m_rkey.New(17);
439 m_wspace.New(16);
440
441 GetUserKey(LITTLE_ENDIAN_ORDER, m_rkey.begin(), 16, userKey, keyLength);
442 m_rkey[16] = W64LIT(0x1BD11BDAA9FC1A22) ^ m_rkey[0] ^ m_rkey[1] ^ m_rkey[2] ^ m_rkey[3] ^ m_rkey[4] ^
443 m_rkey[5] ^ m_rkey[6] ^ m_rkey[7] ^ m_rkey[8] ^ m_rkey[9] ^ m_rkey[10] ^ m_rkey[11] ^ m_rkey[12] ^
444 m_rkey[13] ^ m_rkey[14] ^ m_rkey[15];
445
446 SetTweak(params);
447}
448
449void Threefish1024::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
450{
451 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
452 word64 &G4=m_wspace[4], &G5=m_wspace[5], &G6=m_wspace[6], &G7=m_wspace[7];
453 word64 &G8=m_wspace[8], &G9=m_wspace[9], &G10=m_wspace[10], &G11=m_wspace[11];
454 word64 &G12=m_wspace[12], &G13=m_wspace[13], &G14=m_wspace[14], &G15=m_wspace[15];
455
456 // Reverse bytes on BigEndian; align pointer on LittleEndian
457 typedef GetBlock<word64, LittleEndian, false> InBlock;
458 InBlock iblk(inBlock);
459 iblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7)(G8)(G9)(G10)(G11)(G12)(G13)(G14)(G15);
460
461 G0 += m_rkey[0]; G1 += m_rkey[1]; G2 += m_rkey[2]; G3 += m_rkey[3];
462 G4 += m_rkey[4]; G5 += m_rkey[5]; G6 += m_rkey[6]; G7 += m_rkey[7];
463 G8 += m_rkey[8]; G9 += m_rkey[9]; G10 += m_rkey[10]; G11 += m_rkey[11];
464 G12 += m_rkey[12]; G13 += m_rkey[13]; G14 += m_rkey[14]; G15 += m_rkey[15];
465 G13 += m_tweak[0]; G14 += m_tweak[1];
466
467 G1024x8(0); G1024x8(2); G1024x8(4); G1024x8(6); G1024x8(8);
468 G1024x8(10); G1024x8(12); G1024x8(14); G1024x8(16); G1024x8(18);
469
470 // Reverse bytes on BigEndian; align pointer on LittleEndian
471 typedef PutBlock<word64, LittleEndian, false> OutBlock;
472 OutBlock oblk(xorBlock, outBlock);
473 oblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7)(G8)(G9)(G10)(G11)(G12)(G13)(G14)(G15);
474}
475
476void Threefish1024::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
477{
478 word64 &G0=m_wspace[0], &G1=m_wspace[1], &G2=m_wspace[2], &G3=m_wspace[3];
479 word64 &G4=m_wspace[4], &G5=m_wspace[5], &G6=m_wspace[6], &G7=m_wspace[7];
480 word64 &G8=m_wspace[8], &G9=m_wspace[9], &G10=m_wspace[10], &G11=m_wspace[11];
481 word64 &G12=m_wspace[12], &G13=m_wspace[13], &G14=m_wspace[14], &G15=m_wspace[15];
482
483 // Reverse bytes on BigEndian; align pointer on LittleEndian
484 typedef GetBlock<word64, LittleEndian, false> InBlock;
485 InBlock iblk(inBlock);
486 iblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7)(G8)(G9)(G10)(G11)(G12)(G13)(G14)(G15);
487
488 G0 -= m_rkey[3]; G1 -= m_rkey[4]; G2 -= m_rkey[5]; G3 -= m_rkey[6];
489 G4 -= m_rkey[7]; G5 -= m_rkey[8]; G6 -= m_rkey[9]; G7 -= m_rkey[10];
490 G8 -= m_rkey[11]; G9 -= m_rkey[12]; G10 -= m_rkey[13]; G11 -= m_rkey[14];
491 G12 -= m_rkey[15]; G13 -= m_rkey[16]; G14 -= m_rkey[0]; G15 -= m_rkey[1];
492 G13 -= m_tweak[2]; G14 -= m_tweak[0]; G15 -= 20;
493
494 IG1024x8(18); IG1024x8(16); IG1024x8(14); IG1024x8(12); IG1024x8(10);
495 IG1024x8(8); IG1024x8(6); IG1024x8(4); IG1024x8(2); IG1024x8(0);
496
497 // Reverse bytes on BigEndian; align pointer on LittleEndian
498 typedef PutBlock<word64, LittleEndian, false> OutBlock;
499 OutBlock oblk(xorBlock, outBlock);
500 oblk(G0)(G1)(G2)(G3)(G4)(G5)(G6)(G7)(G8)(G9)(G10)(G11)(G12)(G13)(G14)(G15);
501}
502
503NAMESPACE_END
algparam.h
Classes for working with NameValuePairs.
argnames.h
Standard names for retrieving values by name when working with NameValuePairs.
FixedKeyLength< BS >::KEYLENGTH
static const int KEYLENGTH
The default key length used by the algorithm provided as a constant.
Definition seckey.h:129
GetBlock
Access a block of memory.
Definition misc.h:2975
NameValuePairs
Interface for retrieving values given their names.
Definition cryptlib.h:327
PutBlock
Access a block of memory.
Definition misc.h:3016
SecBlock::begin
iterator begin()
Provides an iterator pointing to the first element in the memory block.
Definition secblock.h:836
SecBlock::New
void New(size_type newSize)
Change size without preserving contents.
Definition secblock.h:1126
config.h
Library configuration file.
W64LIT
#define W64LIT(x)
Declare an unsigned word64.
Definition config_int.h:129
word64
unsigned long long word64
64-bit unsigned datatype
Definition config_int.h:101
LITTLE_ENDIAN_ORDER
@ LITTLE_ENDIAN_ORDER
byte order is little-endian
Definition cryptlib.h:150
misc.h
Utility functions for the Crypto++ library.
GetUserKey
void GetUserKey(ByteOrder order, T *out, size_t outlen, const byte *in, size_t inlen)
Copy bytes in a buffer to an array of elements in big-endian order.
Definition misc.h:2500
CryptoPP
Crypto++ library namespace.
pch.h
Precompiled header file.
threefish.h
Classes for the Threefish block cipher.
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition trap.h:68
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