Botan  2.19.1
Crypto and TLS for C++11
sha3_round.h
Go to the documentation of this file.
1 /*
2 * (C) 2010,2016,2021 Jack Lloyd
3 *
4 * Botan is released under the Simplified BSD License (see license.txt)
5 */
6 
7 #ifndef BOTAN_SHA3_ROUND_H_
8 #define BOTAN_SHA3_ROUND_H_
9 
10 #include <botan/types.h>
11 #include <botan/rotate.h>
12 
13 /*
14 A bug in Clang 12 and XCode 13 cause a miscompilation of SHA3_round
15 with optimization levels -O2 and higher.
16 
17 For details
18  https://github.com/randombit/botan/issues/2802 and
19  https://bugs.llvm.org/show_bug.cgi?id=51957
20 */
21 
22 #if defined(__clang__) && \
23  (( defined(__apple_build_version__) && __clang_major__ == 13) || \
24  (!defined(__apple_build_version__) && __clang_major__ == 12))
25  #define BOTAN_HAS_BROKEN_CLANG_SHA3
26 #endif
27 
28 #if defined(BOTAN_HAS_BROKEN_CLANG_SHA3)
29  #include <tuple>
30 #endif
31 
32 namespace Botan {
33 
34 #if defined(BOTAN_HAS_BROKEN_CLANG_SHA3)
35 
36 namespace {
37 
38 __attribute__((noinline)) std::tuple<uint64_t, uint64_t, uint64_t, uint64_t, uint64_t>
39  xor_CNs(const uint64_t A[25])
40  {
41  return std::tuple<uint64_t, uint64_t, uint64_t, uint64_t, uint64_t>(
42  A[0] ^ A[5] ^ A[10] ^ A[15] ^ A[20],
43  A[1] ^ A[6] ^ A[11] ^ A[16] ^ A[21],
44  A[2] ^ A[7] ^ A[12] ^ A[17] ^ A[22],
45  A[3] ^ A[8] ^ A[13] ^ A[18] ^ A[23],
46  A[4] ^ A[9] ^ A[14] ^ A[19] ^ A[24]);
47  }
48 
49 }
50 
51 #endif
52 
53 inline void SHA3_round(uint64_t T[25], const uint64_t A[25], uint64_t RC)
54  {
55 #if defined(BOTAN_HAS_BROKEN_CLANG_SHA3)
56  const auto [C0,C1,C2,C3,C4] = xor_CNs(A);
57 #else
58  const uint64_t C0 = A[0] ^ A[5] ^ A[10] ^ A[15] ^ A[20];
59  const uint64_t C1 = A[1] ^ A[6] ^ A[11] ^ A[16] ^ A[21];
60  const uint64_t C2 = A[2] ^ A[7] ^ A[12] ^ A[17] ^ A[22];
61  const uint64_t C3 = A[3] ^ A[8] ^ A[13] ^ A[18] ^ A[23];
62  const uint64_t C4 = A[4] ^ A[9] ^ A[14] ^ A[19] ^ A[24];
63 #endif
64 
65  const uint64_t D0 = rotl<1>(C0) ^ C3;
66  const uint64_t D1 = rotl<1>(C1) ^ C4;
67  const uint64_t D2 = rotl<1>(C2) ^ C0;
68  const uint64_t D3 = rotl<1>(C3) ^ C1;
69  const uint64_t D4 = rotl<1>(C4) ^ C2;
70 
71  const uint64_t B00 = A[ 0] ^ D1;
72  const uint64_t B01 = rotl<44>(A[ 6] ^ D2);
73  const uint64_t B02 = rotl<43>(A[12] ^ D3);
74  const uint64_t B03 = rotl<21>(A[18] ^ D4);
75  const uint64_t B04 = rotl<14>(A[24] ^ D0);
76  T[ 0] = B00 ^ (~B01 & B02) ^ RC;
77  T[ 1] = B01 ^ (~B02 & B03);
78  T[ 2] = B02 ^ (~B03 & B04);
79  T[ 3] = B03 ^ (~B04 & B00);
80  T[ 4] = B04 ^ (~B00 & B01);
81 
82  const uint64_t B05 = rotl<28>(A[ 3] ^ D4);
83  const uint64_t B06 = rotl<20>(A[ 9] ^ D0);
84  const uint64_t B07 = rotl< 3>(A[10] ^ D1);
85  const uint64_t B08 = rotl<45>(A[16] ^ D2);
86  const uint64_t B09 = rotl<61>(A[22] ^ D3);
87  T[ 5] = B05 ^ (~B06 & B07);
88  T[ 6] = B06 ^ (~B07 & B08);
89  T[ 7] = B07 ^ (~B08 & B09);
90  T[ 8] = B08 ^ (~B09 & B05);
91  T[ 9] = B09 ^ (~B05 & B06);
92 
93  const uint64_t B10 = rotl< 1>(A[ 1] ^ D2);
94  const uint64_t B11 = rotl< 6>(A[ 7] ^ D3);
95  const uint64_t B12 = rotl<25>(A[13] ^ D4);
96  const uint64_t B13 = rotl< 8>(A[19] ^ D0);
97  const uint64_t B14 = rotl<18>(A[20] ^ D1);
98  T[10] = B10 ^ (~B11 & B12);
99  T[11] = B11 ^ (~B12 & B13);
100  T[12] = B12 ^ (~B13 & B14);
101  T[13] = B13 ^ (~B14 & B10);
102  T[14] = B14 ^ (~B10 & B11);
103 
104  const uint64_t B15 = rotl<27>(A[ 4] ^ D0);
105  const uint64_t B16 = rotl<36>(A[ 5] ^ D1);
106  const uint64_t B17 = rotl<10>(A[11] ^ D2);
107  const uint64_t B18 = rotl<15>(A[17] ^ D3);
108  const uint64_t B19 = rotl<56>(A[23] ^ D4);
109  T[15] = B15 ^ (~B16 & B17);
110  T[16] = B16 ^ (~B17 & B18);
111  T[17] = B17 ^ (~B18 & B19);
112  T[18] = B18 ^ (~B19 & B15);
113  T[19] = B19 ^ (~B15 & B16);
114 
115  const uint64_t B20 = rotl<62>(A[ 2] ^ D3);
116  const uint64_t B21 = rotl<55>(A[ 8] ^ D4);
117  const uint64_t B22 = rotl<39>(A[14] ^ D0);
118  const uint64_t B23 = rotl<41>(A[15] ^ D1);
119  const uint64_t B24 = rotl< 2>(A[21] ^ D2);
120  T[20] = B20 ^ (~B21 & B22);
121  T[21] = B21 ^ (~B22 & B23);
122  T[22] = B22 ^ (~B23 & B24);
123  T[23] = B23 ^ (~B24 & B20);
124  T[24] = B24 ^ (~B20 & B21);
125  }
126 
127 }
128 
129 #endif
void BOTAN_FUNC_ISA("avx2") SHACAL2 SIMD_8x32 A
Definition: bigint.h:1143
Definition: alg_id.cpp:13
fe T
Definition: ge.cpp:37
void SHA3_round(uint64_t T[25], const uint64_t A[25], uint64_t RC)
Definition: sha3_round.h:53