Crypto++  8.8
Free C++ class library of cryptographic schemes
blake2.cpp
1 // blake2.cpp - written and placed in the public domain by Jeffrey Walton
2 // and Zooko Wilcox-O'Hearn. Based on Aumasson, Neves,
3 // Wilcox-O'Hearn and Winnerlein's reference BLAKE2
4 // implementation at http://github.com/BLAKE2/BLAKE2.
5 //
6 // The BLAKE2b and BLAKE2s numbers are consistent with the BLAKE2 team's
7 // numbers. However, we have an Altivec implementation of BLAKE2s,
8 // and a POWER8 implementation of BLAKE2b (BLAKE2 team is missing them).
9 // Altivec code is about 2x faster than C++ when using GCC 5.0 or
10 // above. The POWER8 code is about 2.5x faster than C++ when using GCC 5.0
11 // or above. If you use GCC 4.0 (PowerMac) or GCC 4.8 (GCC Compile Farm)
12 // then the PowerPC code will be slower than C++. Be sure to use GCC 5.0
13 // or above for PowerPC builds or disable Altivec for BLAKE2b and BLAKE2s
14 // if using the old compilers.
15 
16 #include "pch.h"
17 #include "config.h"
18 #include "cryptlib.h"
19 #include "argnames.h"
20 #include "algparam.h"
21 #include "blake2.h"
22 #include "cpu.h"
23 
24 // Uncomment for benchmarking C++ against SSE2 or NEON.
25 // Do so in both blake2.cpp and blake2_simd.cpp.
26 // #undef CRYPTOPP_SSE41_AVAILABLE
27 // #undef CRYPTOPP_ARM_NEON_AVAILABLE
28 // #undef CRYPTOPP_ALTIVEC_AVAILABLE
29 // #undef CRYPTOPP_POWER8_AVAILABLE
30 
31 // Disable NEON/ASIMD for Cortex-A53 and A57. The shifts are too slow and C/C++ is about
32 // 3 cpb faster than NEON/ASIMD. Also see http://github.com/weidai11/cryptopp/issues/367.
33 #if (defined(__aarch32__) || defined(__aarch64__)) && defined(CRYPTOPP_SLOW_ARMV8_SHIFT)
34 # undef CRYPTOPP_ARM_NEON_AVAILABLE
35 #endif
36 
37 // BLAKE2s bug on AIX 7.1 (POWER7) with XLC 12.01
38 // https://github.com/weidai11/cryptopp/issues/743
39 #if defined(__xlC__) && (__xlC__ < 0x0d01)
40 # define CRYPTOPP_DISABLE_ALTIVEC 1
41 # undef CRYPTOPP_POWER7_AVAILABLE
42 # undef CRYPTOPP_POWER8_AVAILABLE
43 # undef CRYPTOPP_ALTIVEC_AVAILABLE
44 #endif
45 
46 // Can't use GetAlignmentOf<word64>() because of C++11 and constexpr
47 // Can use 'const unsigned int' because of MSVC 2013
48 #if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64)
49 # define ALIGN_SPEC32 16
50 # define ALIGN_SPEC64 16
51 #else
52 # define ALIGN_SPEC32 4
53 # define ALIGN_SPEC64 8
54 #endif
55 
56 NAMESPACE_BEGIN(CryptoPP)
57 
58 // Export the tables to the SIMD files
59 extern const word32 BLAKE2S_IV[8];
60 extern const word64 BLAKE2B_IV[8];
61 
62 CRYPTOPP_ALIGN_DATA(ALIGN_SPEC32)
63 const word32 BLAKE2S_IV[8] = {
64  0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
65  0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
66 };
67 
68 CRYPTOPP_ALIGN_DATA(ALIGN_SPEC64)
69 const word64 BLAKE2B_IV[8] = {
70  W64LIT(0x6a09e667f3bcc908), W64LIT(0xbb67ae8584caa73b),
71  W64LIT(0x3c6ef372fe94f82b), W64LIT(0xa54ff53a5f1d36f1),
72  W64LIT(0x510e527fade682d1), W64LIT(0x9b05688c2b3e6c1f),
73  W64LIT(0x1f83d9abfb41bd6b), W64LIT(0x5be0cd19137e2179)
74 };
75 
76 NAMESPACE_END
77 
78 ANONYMOUS_NAMESPACE_BEGIN
79 
80 using CryptoPP::byte;
81 using CryptoPP::word32;
82 using CryptoPP::word64;
83 using CryptoPP::rotrConstant;
84 
85 CRYPTOPP_ALIGN_DATA(ALIGN_SPEC32)
86 const byte BLAKE2S_SIGMA[10][16] = {
87  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
88  { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
89  { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
90  { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
91  { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
92  { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
93  { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
94  { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
95  { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
96  { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 },
97 };
98 
99 CRYPTOPP_ALIGN_DATA(ALIGN_SPEC32)
100 const byte BLAKE2B_SIGMA[12][16] = {
101  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
102  { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 },
103  { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 },
104  { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 },
105  { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 },
106  { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 },
107  { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 },
108  { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 },
109  { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 },
110  { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 },
111  { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
112  { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 }
113 };
114 
115 template <unsigned int R, unsigned int N>
116 inline void BLAKE2B_G(const word64 m[16], word64& a, word64& b, word64& c, word64& d)
117 {
118  a = a + b + m[BLAKE2B_SIGMA[R][2*N+0]];
119  d = rotrConstant<32>(d ^ a);
120  c = c + d;
121  b = rotrConstant<24>(b ^ c);
122  a = a + b + m[BLAKE2B_SIGMA[R][2*N+1]];
123  d = rotrConstant<16>(d ^ a);
124  c = c + d;
125  b = rotrConstant<63>(b ^ c);
126 }
127 
128 template <unsigned int R>
129 inline void BLAKE2B_ROUND(const word64 m[16], word64 v[16])
130 {
131  BLAKE2B_G<R,0>(m,v[ 0],v[ 4],v[ 8],v[12]);
132  BLAKE2B_G<R,1>(m,v[ 1],v[ 5],v[ 9],v[13]);
133  BLAKE2B_G<R,2>(m,v[ 2],v[ 6],v[10],v[14]);
134  BLAKE2B_G<R,3>(m,v[ 3],v[ 7],v[11],v[15]);
135  BLAKE2B_G<R,4>(m,v[ 0],v[ 5],v[10],v[15]);
136  BLAKE2B_G<R,5>(m,v[ 1],v[ 6],v[11],v[12]);
137  BLAKE2B_G<R,6>(m,v[ 2],v[ 7],v[ 8],v[13]);
138  BLAKE2B_G<R,7>(m,v[ 3],v[ 4],v[ 9],v[14]);
139 }
140 
141 template <unsigned int R, unsigned int N>
142 inline void BLAKE2S_G(const word32 m[16], word32& a, word32& b, word32& c, word32& d)
143 {
144  a = a + b + m[BLAKE2S_SIGMA[R][2*N+0]];
145  d = rotrConstant<16>(d ^ a);
146  c = c + d;
147  b = rotrConstant<12>(b ^ c);
148  a = a + b + m[BLAKE2S_SIGMA[R][2*N+1]];
149  d = rotrConstant<8>(d ^ a);
150  c = c + d;
151  b = rotrConstant<7>(b ^ c);
152 }
153 
154 template <unsigned int R>
155 inline void BLAKE2S_ROUND(const word32 m[16], word32 v[])
156 {
157  BLAKE2S_G<R,0>(m,v[ 0],v[ 4],v[ 8],v[12]);
158  BLAKE2S_G<R,1>(m,v[ 1],v[ 5],v[ 9],v[13]);
159  BLAKE2S_G<R,2>(m,v[ 2],v[ 6],v[10],v[14]);
160  BLAKE2S_G<R,3>(m,v[ 3],v[ 7],v[11],v[15]);
161  BLAKE2S_G<R,4>(m,v[ 0],v[ 5],v[10],v[15]);
162  BLAKE2S_G<R,5>(m,v[ 1],v[ 6],v[11],v[12]);
163  BLAKE2S_G<R,6>(m,v[ 2],v[ 7],v[ 8],v[13]);
164  BLAKE2S_G<R,7>(m,v[ 3],v[ 4],v[ 9],v[14]);
165 }
166 
167 ANONYMOUS_NAMESPACE_END
168 
169 NAMESPACE_BEGIN(CryptoPP)
170 
171 void BLAKE2_Compress32_CXX(const byte* input, BLAKE2s_State& state);
172 void BLAKE2_Compress64_CXX(const byte* input, BLAKE2b_State& state);
173 
174 #if CRYPTOPP_SSE41_AVAILABLE
175 extern void BLAKE2_Compress32_SSE4(const byte* input, BLAKE2s_State& state);
176 extern void BLAKE2_Compress64_SSE4(const byte* input, BLAKE2b_State& state);
177 #endif
178 
179 #if CRYPTOPP_ARM_NEON_AVAILABLE
180 extern void BLAKE2_Compress32_NEON(const byte* input, BLAKE2s_State& state);
181 extern void BLAKE2_Compress64_NEON(const byte* input, BLAKE2b_State& state);
182 #endif
183 
184 #if CRYPTOPP_ALTIVEC_AVAILABLE
185 extern void BLAKE2_Compress32_ALTIVEC(const byte* input, BLAKE2s_State& state);
186 #endif
187 
188 #if CRYPTOPP_POWER8_AVAILABLE
189 extern void BLAKE2_Compress64_POWER8(const byte* input, BLAKE2b_State& state);
190 #endif
191 
192 unsigned int BLAKE2b::OptimalDataAlignment() const
193 {
194 #if defined(CRYPTOPP_SSE41_AVAILABLE)
195  if (HasSSE41())
196  return 16; // load __m128i
197  else
198 #endif
199 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
200  if (HasNEON())
201  return 8; // load uint64x2_t
202  else
203 #endif
204 #if (CRYPTOPP_POWER8_AVAILABLE)
205  if (HasPower8())
206  return 16; // load vector long long
207  else
208 #endif
209  return GetAlignmentOf<word64>();
210 }
211 
212 std::string BLAKE2b::AlgorithmProvider() const
213 {
214 #if defined(CRYPTOPP_SSE41_AVAILABLE)
215  if (HasSSE41())
216  return "SSE4.1";
217  else
218 #endif
219 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
220  if (HasNEON())
221  return "NEON";
222  else
223 #endif
224 #if (CRYPTOPP_POWER8_AVAILABLE)
225  if (HasPower8())
226  return "Power8";
227  else
228 #endif
229  return "C++";
230 }
231 
232 unsigned int BLAKE2s::OptimalDataAlignment() const
233 {
234 #if defined(CRYPTOPP_SSE41_AVAILABLE)
235  if (HasSSE41())
236  return 16; // load __m128i
237  else
238 #endif
239 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
240  if (HasNEON())
241  return 4; // load uint32x4_t
242  else
243 #endif
244 #if (CRYPTOPP_ALTIVEC_AVAILABLE)
245  if (HasAltivec())
246  return 16; // load vector unsigned int
247  else
248 #endif
249  return GetAlignmentOf<word32>();
250 }
251 
252 std::string BLAKE2s::AlgorithmProvider() const
253 {
254 #if defined(CRYPTOPP_SSE41_AVAILABLE)
255  if (HasSSE41())
256  return "SSE4.1";
257  else
258 #endif
259 #if (CRYPTOPP_ARM_NEON_AVAILABLE)
260  if (HasNEON())
261  return "NEON";
262  else
263 #endif
264 #if (CRYPTOPP_ALTIVEC_AVAILABLE)
265  if (HasAltivec())
266  return "Altivec";
267  else
268 #endif
269  return "C++";
270 }
271 
272 void BLAKE2s_State::Reset()
273 {
274  std::memset(m_hft, 0x00, m_hft.SizeInBytes());
275  m_len = 0;
276 }
277 
278 void BLAKE2b_State::Reset()
279 {
280  std::memset(m_hft, 0x00, m_hft.SizeInBytes());
281  m_len = 0;
282 }
283 
284 BLAKE2s_ParameterBlock::BLAKE2s_ParameterBlock(size_t digestLen, size_t keyLen,
285  const byte* saltStr, size_t saltLen,
286  const byte* personalizationStr, size_t personalizationLen)
287 {
288  Reset(digestLen, keyLen);
289 
290  if (saltStr && saltLen)
291  memcpy_s(salt(), SALTSIZE, saltStr, saltLen);
292 
293  if (personalizationStr && personalizationLen)
294  memcpy_s(personalization(), PERSONALIZATIONSIZE, personalizationStr, personalizationLen);
295 }
296 
297 BLAKE2b_ParameterBlock::BLAKE2b_ParameterBlock(size_t digestLen, size_t keyLen,
298  const byte* saltStr, size_t saltLen,
299  const byte* personalizationStr, size_t personalizationLen)
300 {
301  Reset(digestLen, keyLen);
302 
303  if (saltStr && saltLen)
304  memcpy_s(salt(), SALTSIZE, saltStr, saltLen);
305 
306  if (personalizationStr && personalizationLen)
307  memcpy_s(personalization(), PERSONALIZATIONSIZE, personalizationStr, personalizationLen);
308 }
309 
310 void BLAKE2s_ParameterBlock::Reset(size_t digestLen, size_t keyLen)
311 {
312  std::memset(m_data, 0x00, m_data.size());
313  m_data[DigestOff] = static_cast<byte>(digestLen);
314  m_data[KeyOff] = static_cast<byte>(keyLen);
315  m_data[FanoutOff] = m_data[DepthOff] = 1;
316 }
317 
318 void BLAKE2b_ParameterBlock::Reset(size_t digestLen, size_t keyLen)
319 {
320  std::memset(m_data, 0x00, m_data.size());
321  m_data[DigestOff] = static_cast<byte>(digestLen);
322  m_data[KeyOff] = static_cast<byte>(keyLen);
323  m_data[FanoutOff] = m_data[DepthOff] = 1;
324 }
325 
326 BLAKE2s::BLAKE2s(bool treeMode, unsigned int digestSize)
327  : m_digestSize(digestSize), m_keyLength(0), m_treeMode(treeMode)
328 {
329  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
330 
331  UncheckedSetKey(NULLPTR, 0, MakeParameters
332  (Name::DigestSize(), (int)digestSize)
333  (Name::TreeMode(), treeMode));
334 }
335 
336 BLAKE2b::BLAKE2b(bool treeMode, unsigned int digestSize)
337  : m_digestSize(digestSize), m_keyLength(0), m_treeMode(treeMode)
338 {
339  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
340 
341  UncheckedSetKey(NULLPTR, 0, MakeParameters
342  (Name::DigestSize(), (int)digestSize)
343  (Name::TreeMode(), treeMode));
344 }
345 
346 BLAKE2s::BLAKE2s(unsigned int digestSize)
347  : m_digestSize(digestSize), m_keyLength(0), m_treeMode(false)
348 {
349  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
350 
351  UncheckedSetKey(NULLPTR, 0, MakeParameters
352  (Name::DigestSize(), (int)digestSize)
353  (Name::TreeMode(), false));
354 }
355 
356 BLAKE2b::BLAKE2b(unsigned int digestSize)
357  : m_digestSize(digestSize), m_keyLength(0), m_treeMode(false)
358 {
359  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
360 
361  UncheckedSetKey(NULLPTR, 0, MakeParameters
362  (Name::DigestSize(), (int)digestSize)
363  (Name::TreeMode(), false));
364 }
365 
366 BLAKE2s::BLAKE2s(const byte *key, size_t keyLength, const byte* salt, size_t saltLength,
367  const byte* personalization, size_t personalizationLength, bool treeMode, unsigned int digestSize)
368  : m_digestSize(digestSize), m_keyLength(static_cast<unsigned int>(keyLength)), m_treeMode(treeMode)
369 {
370  CRYPTOPP_ASSERT(keyLength <= MAX_KEYLENGTH);
371  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
372  CRYPTOPP_ASSERT(saltLength <= SALTSIZE);
373  CRYPTOPP_ASSERT(personalizationLength <= PERSONALIZATIONSIZE);
374 
375  UncheckedSetKey(key, static_cast<unsigned int>(keyLength), MakeParameters
376  (Name::DigestSize(),(int)digestSize)
377  (Name::TreeMode(),treeMode)
378  (Name::Salt(), ConstByteArrayParameter(salt, saltLength))
379  (Name::Personalization(), ConstByteArrayParameter(personalization, personalizationLength)));
380 }
381 
382 BLAKE2b::BLAKE2b(const byte *key, size_t keyLength, const byte* salt, size_t saltLength,
383  const byte* personalization, size_t personalizationLength, bool treeMode, unsigned int digestSize)
384  : m_digestSize(digestSize), m_keyLength(static_cast<unsigned int>(keyLength)), m_treeMode(treeMode)
385 {
386  CRYPTOPP_ASSERT(keyLength <= MAX_KEYLENGTH);
387  CRYPTOPP_ASSERT(digestSize <= DIGESTSIZE);
388  CRYPTOPP_ASSERT(saltLength <= SALTSIZE);
389  CRYPTOPP_ASSERT(personalizationLength <= PERSONALIZATIONSIZE);
390 
391  UncheckedSetKey(key, static_cast<unsigned int>(keyLength), MakeParameters
392  (Name::DigestSize(),(int)digestSize)
393  (Name::TreeMode(),treeMode)
394  (Name::Salt(), ConstByteArrayParameter(salt, saltLength))
395  (Name::Personalization(), ConstByteArrayParameter(personalization, personalizationLength)));
396 }
397 
398 void BLAKE2s::UncheckedSetKey(const byte *key, unsigned int length, const CryptoPP::NameValuePairs& params)
399 {
400  if (key && length)
401  {
402  m_key.New(BLOCKSIZE);
403  std::memcpy(m_key, key, length);
404  std::memset(m_key + length, 0x00, BLOCKSIZE - length);
405  m_keyLength = length;
406  }
407  else
408  {
409  m_key.resize(0);
410  m_keyLength = 0;
411  }
412 
413  m_digestSize = static_cast<unsigned int>(params.GetIntValueWithDefault(
414  Name::DigestSize(), static_cast<int>(m_digestSize)));
415 
416  m_state.Reset();
417  m_block.Reset(m_digestSize, m_keyLength);
418  (void)params.GetValue(Name::TreeMode(), m_treeMode);
419 
420  ConstByteArrayParameter t;
421  if (params.GetValue(Name::Salt(), t) && t.begin() && t.size())
422  memcpy_s(m_block.salt(), SALTSIZE, t.begin(), t.size());
423 
424  if (params.GetValue(Name::Personalization(), t) && t.begin() && t.size())
425  memcpy_s(m_block.personalization(), PERSONALIZATIONSIZE, t.begin(), t.size());
426 
427  Restart();
428 }
429 
430 void BLAKE2b::UncheckedSetKey(const byte *key, unsigned int length, const CryptoPP::NameValuePairs& params)
431 {
432  if (key && length)
433  {
434  m_key.New(BLOCKSIZE);
435  std::memcpy(m_key, key, length);
436  std::memset(m_key + length, 0x00, BLOCKSIZE - length);
437  m_keyLength = length;
438  }
439  else
440  {
441  m_key.resize(0);
442  m_keyLength = 0;
443  }
444 
445  m_digestSize = static_cast<unsigned int>(params.GetIntValueWithDefault(
446  Name::DigestSize(), static_cast<int>(m_digestSize)));
447 
448  m_state.Reset();
449  m_block.Reset(m_digestSize, m_keyLength);
450  (void)params.GetValue(Name::TreeMode(), m_treeMode);
451 
452  ConstByteArrayParameter t;
453  if (params.GetValue(Name::Salt(), t) && t.begin() && t.size())
454  memcpy_s(m_block.salt(), SALTSIZE, t.begin(), t.size());
455 
456  if (params.GetValue(Name::Personalization(), t) && t.begin() && t.size())
457  memcpy_s(m_block.personalization(), PERSONALIZATIONSIZE, t.begin(), t.size());
458 
459  Restart();
460 }
461 
462 void BLAKE2s::Restart()
463 {
464  static const word32 zero[2] = {0,0};
465  Restart(m_block, zero);
466 }
467 
468 void BLAKE2b::Restart()
469 {
470  static const word64 zero[2] = {0,0};
471  Restart(m_block, zero);
472 }
473 
474 void BLAKE2s::Restart(const BLAKE2s_ParameterBlock& block, const word32 counter[2])
475 {
476  // We take a counter as a parameter to allow customized state.
477  m_state.Reset();
478  if (counter != NULLPTR)
479  {
480  word32* t = m_state.t();
481  t[0] = counter[0];
482  t[1] = counter[1];
483  }
484 
485  // We take a parameter block as a parameter to allow customized state.
486  // Avoid the copy of the parameter block when we are passing our own block.
487  if (block.data() != m_block.data()) {
488  std::memcpy(m_block.data(), block.data(), m_block.size());
489  }
490 
491  m_block.m_data[BLAKE2s_ParameterBlock::DigestOff] = (byte)m_digestSize;
492  m_block.m_data[BLAKE2s_ParameterBlock::KeyOff] = (byte)m_keyLength;
493 
494  const word32* iv = BLAKE2S_IV;
495  PutBlock<word32, LittleEndian, true> put(m_block.data(), m_state.h());
496  put(iv[0])(iv[1])(iv[2])(iv[3])(iv[4])(iv[5])(iv[6])(iv[7]);
497 
498  // When BLAKE2 is keyed, the input stream is simply {key || 0 || message}.
499  // The key is padded to a full Blocksize with 0. Key it during Restart to
500  // avoid FirstPut and friends. Key size == 0 means no key.
501  if (m_keyLength)
502  Update(m_key, BLOCKSIZE);
503 }
504 
505 void BLAKE2b::Restart(const BLAKE2b_ParameterBlock& block, const word64 counter[2])
506 {
507  // We take a counter as a parameter to allow customized state.
508  m_state.Reset();
509  if (counter != NULLPTR)
510  {
511  word64* t = m_state.t();
512  t[0] = counter[0];
513  t[1] = counter[1];
514  }
515 
516  // We take a parameter block as a parameter to allow customized state.
517  // Avoid the copy of the parameter block when we are passing our own block.
518  if (block.data() != m_block.data()) {
519  std::memcpy(m_block.data(), block.data(), m_block.size());
520  }
521 
522  m_block.m_data[BLAKE2b_ParameterBlock::DigestOff] = (byte)m_digestSize;
523  m_block.m_data[BLAKE2b_ParameterBlock::KeyOff] = (byte)m_keyLength;
524 
525  const word64* iv = BLAKE2B_IV;
526  PutBlock<word64, LittleEndian, true> put(m_block.data(), m_state.h());
527  put(iv[0])(iv[1])(iv[2])(iv[3])(iv[4])(iv[5])(iv[6])(iv[7]);
528 
529  // When BLAKE2 is keyed, the input stream is simply {key || 0 || message}.
530  // The key is padded to a full Blocksize with 0. Key it during Restart to
531  // avoid FirstPut and friends. Key size == 0 means no key.
532  if (m_keyLength)
533  Update(m_key, BLOCKSIZE);
534 }
535 
536 void BLAKE2s::Update(const byte *input, size_t length)
537 {
538  CRYPTOPP_ASSERT(input != NULLPTR || length == 0);
539 
540  if (length > BLOCKSIZE - m_state.m_len)
541  {
542  if (m_state.m_len != 0)
543  {
544  // Complete current block
545  const size_t fill = BLOCKSIZE - m_state.m_len;
546  std::memcpy(m_state.m_buf+m_state.m_len, input, fill);
547 
548  IncrementCounter(BLOCKSIZE);
549  Compress(m_state.m_buf);
550  m_state.m_len = 0;
551 
552  length -= fill, input += fill;
553  }
554 
555  // Compress in-place to avoid copies
556  while (length > BLOCKSIZE)
557  {
558  IncrementCounter(BLOCKSIZE);
559  Compress(input);
560  length -= BLOCKSIZE, input += BLOCKSIZE;
561  }
562  }
563 
564  // Copy tail bytes
565  if (length)
566  {
567  CRYPTOPP_ASSERT(length <= BLOCKSIZE - m_state.m_len);
568  std::memcpy(m_state.m_buf+m_state.m_len, input, length);
569  m_state.m_len += static_cast<unsigned int>(length);
570  }
571 }
572 
573 void BLAKE2b::Update(const byte *input, size_t length)
574 {
575  CRYPTOPP_ASSERT(input != NULLPTR || length == 0);
576 
577  if (length > BLOCKSIZE - m_state.m_len)
578  {
579  if (m_state.m_len != 0)
580  {
581  // Complete current block
582  const size_t fill = BLOCKSIZE - m_state.m_len;
583  std::memcpy(m_state.m_buf+m_state.m_len, input, fill);
584 
585  IncrementCounter(BLOCKSIZE);
586  Compress(m_state.m_buf);
587  m_state.m_len = 0;
588 
589  length -= fill, input += fill;
590  }
591 
592  // Compress in-place to avoid copies
593  while (length > BLOCKSIZE)
594  {
595  CRYPTOPP_ASSERT(m_state.m_len == 0);
596  IncrementCounter(BLOCKSIZE);
597  Compress(input);
598  length -= BLOCKSIZE, input += BLOCKSIZE;
599  }
600  }
601 
602  // Copy tail bytes
603  if (length)
604  {
605  CRYPTOPP_ASSERT(length <= BLOCKSIZE - m_state.m_len);
606  std::memcpy(m_state.m_buf + m_state.m_len, input, length);
607  m_state.m_len += static_cast<unsigned int>(length);
608  }
609 }
610 
611 void BLAKE2s::TruncatedFinal(byte *hash, size_t size)
612 {
613  CRYPTOPP_ASSERT(hash != NULLPTR);
614  this->ThrowIfInvalidTruncatedSize(size);
615  word32* f = m_state.f();
616 
617  // Set last block unconditionally
618  f[0] = ~static_cast<word32>(0);
619 
620  // Set last node if tree mode
621  if (m_treeMode)
622  f[1] = ~static_cast<word32>(0);
623 
624  // Increment counter for tail bytes only
625  IncrementCounter(m_state.m_len);
626 
627  std::memset(m_state.m_buf + m_state.m_len, 0x00, BLOCKSIZE - m_state.m_len);
628  Compress(m_state.m_buf);
629 
630  // Copy to caller buffer
631  std::memcpy(hash, m_state.h(), size);
632 
633  Restart();
634 }
635 
636 void BLAKE2b::TruncatedFinal(byte *hash, size_t size)
637 {
638  CRYPTOPP_ASSERT(hash != NULLPTR);
639  this->ThrowIfInvalidTruncatedSize(size);
640  word64* f = m_state.f();
641 
642  // Set last block unconditionally
643  f[0] = ~static_cast<word64>(0);
644 
645  // Set last node if tree mode
646  if (m_treeMode)
647  f[1] = ~static_cast<word64>(0);
648 
649  // Increment counter for tail bytes only
650  IncrementCounter(m_state.m_len);
651 
652  std::memset(m_state.m_buf + m_state.m_len, 0x00, BLOCKSIZE - m_state.m_len);
653  Compress(m_state.m_buf);
654 
655  // Copy to caller buffer
656  std::memcpy(hash, m_state.h(), size);
657 
658  Restart();
659 }
660 
661 void BLAKE2s::IncrementCounter(size_t count)
662 {
663  word32* t = m_state.t();
664  t[0] += static_cast<word32>(count);
665  t[1] += !!(t[0] < count);
666 }
667 
668 void BLAKE2b::IncrementCounter(size_t count)
669 {
670  word64* t = m_state.t();
671  t[0] += static_cast<word64>(count);
672  t[1] += !!(t[0] < count);
673 }
674 
675 void BLAKE2s::Compress(const byte *input)
676 {
677 #if CRYPTOPP_SSE41_AVAILABLE
678  if(HasSSE41())
679  {
680  return BLAKE2_Compress32_SSE4(input, m_state);
681  }
682 #endif
683 #if CRYPTOPP_ARM_NEON_AVAILABLE
684  if(HasNEON())
685  {
686  return BLAKE2_Compress32_NEON(input, m_state);
687  }
688 #endif
689 #if CRYPTOPP_ALTIVEC_AVAILABLE
690  if(HasAltivec())
691  {
692  return BLAKE2_Compress32_ALTIVEC(input, m_state);
693  }
694 #endif
695  return BLAKE2_Compress32_CXX(input, m_state);
696 }
697 
698 void BLAKE2b::Compress(const byte *input)
699 {
700 #if CRYPTOPP_SSE41_AVAILABLE
701  if(HasSSE41())
702  {
703  return BLAKE2_Compress64_SSE4(input, m_state);
704  }
705 #endif
706 #if CRYPTOPP_ARM_NEON_AVAILABLE
707  if(HasNEON())
708  {
709  return BLAKE2_Compress64_NEON(input, m_state);
710  }
711 #endif
712 #if CRYPTOPP_POWER8_AVAILABLE
713  if(HasPower8())
714  {
715  return BLAKE2_Compress64_POWER8(input, m_state);
716  }
717 #endif
718  return BLAKE2_Compress64_CXX(input, m_state);
719 }
720 
721 void BLAKE2_Compress64_CXX(const byte* input, BLAKE2b_State& state)
722 {
723  word64 m[16], v[16];
724 
725  GetBlock<word64, LittleEndian, true> get1(input);
726  get1(m[0])(m[1])(m[2])(m[3])(m[4])(m[5])(m[6])(m[7])(m[8])(m[9])(m[10])(m[11])(m[12])(m[13])(m[14])(m[15]);
727 
728  GetBlock<word64, LittleEndian, true> get2(state.h());
729  get2(v[0])(v[1])(v[2])(v[3])(v[4])(v[5])(v[6])(v[7]);
730 
731  const word64* iv = BLAKE2B_IV;
732  const word64* tf = state.t();
733  v[ 8] = iv[0];
734  v[ 9] = iv[1];
735  v[10] = iv[2];
736  v[11] = iv[3];
737  v[12] = tf[0] ^ iv[4];
738  v[13] = tf[1] ^ iv[5];
739  v[14] = tf[2] ^ iv[6];
740  v[15] = tf[3] ^ iv[7];
741 
742  BLAKE2B_ROUND<0>(m, v);
743  BLAKE2B_ROUND<1>(m, v);
744  BLAKE2B_ROUND<2>(m, v);
745  BLAKE2B_ROUND<3>(m, v);
746  BLAKE2B_ROUND<4>(m, v);
747  BLAKE2B_ROUND<5>(m, v);
748  BLAKE2B_ROUND<6>(m, v);
749  BLAKE2B_ROUND<7>(m, v);
750  BLAKE2B_ROUND<8>(m, v);
751  BLAKE2B_ROUND<9>(m, v);
752  BLAKE2B_ROUND<10>(m, v);
753  BLAKE2B_ROUND<11>(m, v);
754 
755  word64* h = state.h();
756  for (unsigned int i = 0; i < 8; ++i)
757  h[i] = h[i] ^ ConditionalByteReverse(LITTLE_ENDIAN_ORDER, v[i] ^ v[i + 8]);
758 }
759 
760 void BLAKE2_Compress32_CXX(const byte* input, BLAKE2s_State& state)
761 {
762  word32 m[16], v[16];
763 
764  GetBlock<word32, LittleEndian, true> get1(input);
765  get1(m[0])(m[1])(m[2])(m[3])(m[4])(m[5])(m[6])(m[7])(m[8])(m[9])(m[10])(m[11])(m[12])(m[13])(m[14])(m[15]);
766 
767  GetBlock<word32, LittleEndian, true> get2(state.h());
768  get2(v[0])(v[1])(v[2])(v[3])(v[4])(v[5])(v[6])(v[7]);
769 
770  const word32* iv = BLAKE2S_IV;
771  const word32* tf = state.t();
772  v[ 8] = iv[0];
773  v[ 9] = iv[1];
774  v[10] = iv[2];
775  v[11] = iv[3];
776  v[12] = tf[0] ^ iv[4];
777  v[13] = tf[1] ^ iv[5];
778  v[14] = tf[2] ^ iv[6];
779  v[15] = tf[3] ^ iv[7];
780 
781  BLAKE2S_ROUND<0>(m, v);
782  BLAKE2S_ROUND<1>(m, v);
783  BLAKE2S_ROUND<2>(m, v);
784  BLAKE2S_ROUND<3>(m, v);
785  BLAKE2S_ROUND<4>(m, v);
786  BLAKE2S_ROUND<5>(m, v);
787  BLAKE2S_ROUND<6>(m, v);
788  BLAKE2S_ROUND<7>(m, v);
789  BLAKE2S_ROUND<8>(m, v);
790  BLAKE2S_ROUND<9>(m, v);
791 
792  word32* h = state.h();
793  for (unsigned int i = 0; i < 8; ++i)
794  h[i] = h[i] ^ ConditionalByteReverse(LITTLE_ENDIAN_ORDER, v[i] ^ v[i + 8]);
795 }
796 
797 NAMESPACE_END
algparam.h
Classes for working with NameValuePairs.
MakeParameters
AlgorithmParameters MakeParameters(const char *name, const T &value, bool throwIfNotUsed=true)
Create an object that implements NameValuePairs.
Definition: algparam.h:508
argnames.h
Standard names for retrieving values by name when working with NameValuePairs.
blake2.h
Classes for BLAKE2b and BLAKE2s message digests and keyed message digests.
BLAKE2b::AlgorithmProvider
std::string AlgorithmProvider() const
Retrieve the provider of this algorithm.
Definition: blake2.cpp:212
BLAKE2b::TruncatedFinal
void TruncatedFinal(byte *hash, size_t size)
Computes the hash of the current message.
Definition: blake2.cpp:636
BLAKE2b::OptimalDataAlignment
unsigned int OptimalDataAlignment() const
Provides input and output data alignment for optimal performance.
Definition: blake2.cpp:192
BLAKE2b::Restart
void Restart()
Restart the hash.
Definition: blake2.cpp:468
BLAKE2b::Update
void Update(const byte *input, size_t length)
Updates a hash with additional input.
Definition: blake2.cpp:573
BLAKE2b::BLAKE2b
BLAKE2b(bool treeMode=false, unsigned int digestSize=DIGESTSIZE)
Construct a BLAKE2b hash.
Definition: blake2.cpp:336
BLAKE2s::Update
void Update(const byte *input, size_t length)
Updates a hash with additional input.
Definition: blake2.cpp:536
BLAKE2s::Restart
void Restart()
Restart the hash.
Definition: blake2.cpp:462
BLAKE2s::TruncatedFinal
void TruncatedFinal(byte *hash, size_t size)
Computes the hash of the current message.
Definition: blake2.cpp:611
BLAKE2s::BLAKE2s
BLAKE2s(bool treeMode=false, unsigned int digestSize=DIGESTSIZE)
Construct a BLAKE2s hash.
Definition: blake2.cpp:326
BLAKE2s::AlgorithmProvider
std::string AlgorithmProvider() const
Retrieve the provider of this algorithm.
Definition: blake2.cpp:252
BLAKE2s::OptimalDataAlignment
unsigned int OptimalDataAlignment() const
Provides input and output data alignment for optimal performance.
Definition: blake2.cpp:232
ConstByteArrayParameter
Used to pass byte array input as part of a NameValuePairs object.
Definition: algparam.h:25
ConstByteArrayParameter::size
size_t size() const
Length of the memory block.
Definition: algparam.h:88
ConstByteArrayParameter::begin
const byte * begin() const
Pointer to the first byte in the memory block.
Definition: algparam.h:84
GetBlock
Access a block of memory.
Definition: misc.h:2975
PutBlock
Access a block of memory.
Definition: misc.h:3016
SecBlock::New
void New(size_type newSize)
Change size without preserving contents.
Definition: secblock.h:1126
SecBlock::SizeInBytes
size_type SizeInBytes() const
Provides the number of bytes in the SecBlock.
Definition: secblock.h:885
SecBlock::size
size_type size() const
Provides the count of elements in the SecBlock.
Definition: secblock.h:867
SecBlock::resize
void resize(size_type newSize)
Change size and preserve contents.
Definition: secblock.h:1198
config.h
Library configuration file.
byte
unsigned char byte
8-bit unsigned datatype
Definition: config_int.h:66
W64LIT
#define W64LIT(x)
Declare an unsigned word64.
Definition: config_int.h:129
word32
unsigned int word32
32-bit unsigned datatype
Definition: config_int.h:72
word64
unsigned long long word64
64-bit unsigned datatype
Definition: config_int.h:101
cpu.h
Functions for CPU features and intrinsics.
cryptlib.h
Abstract base classes that provide a uniform interface to this library.
LITTLE_ENDIAN_ORDER
@ LITTLE_ENDIAN_ORDER
byte order is little-endian
Definition: cryptlib.h:150
memcpy_s
void memcpy_s(void *dest, size_t sizeInBytes, const void *src, size_t count)
Bounds checking replacement for memcpy()
Definition: misc.h:527
rotrConstant
T rotrConstant(T x)
Performs a right rotate.
Definition: misc.h:1783
ConditionalByteReverse
T ConditionalByteReverse(ByteOrder order, T value)
Reverses bytes in a value depending upon endianness.
Definition: misc.h:2417
CryptoPP
Crypto++ library namespace.
Name::TreeMode
const char * TreeMode()
byte
Definition: argnames.h:90
Name::Personalization
const char * Personalization()
ConstByteArrayParameter.
Definition: argnames.h:85
Name::Salt
const char * Salt()
ConstByteArrayParameter.
Definition: argnames.h:87
Name::DigestSize
const char * DigestSize()
int, in bytes
Definition: argnames.h:79
pch.h
Precompiled header file.
BLAKE2b_ParameterBlock
BLAKE2b parameter block.
Definition: blake2.h:112
BLAKE2b_State
BLAKE2b state information.
Definition: blake2.h:197
BLAKE2s_ParameterBlock
BLAKE2s parameter block.
Definition: blake2.h:61
BLAKE2s_State
BLAKE2s state information.
Definition: blake2.h:164
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition: trap.h:68
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