Coverage Report

Created: 2021-05-04 09:02

/src/botan/src/lib/hash/sm3/sm3.cpp
Line
Count
Source (jump to first uncovered line)
1
/*
2
* SM3
3
* (C) 2017 Ribose Inc.
4
* (C) 2021 Jack Lloyd
5
*
6
* Botan is released under the Simplified BSD License (see license.txt)
7
*/
8
9
#include <botan/internal/sm3.h>
10
#include <botan/internal/loadstor.h>
11
#include <botan/internal/rotate.h>
12
#include <botan/internal/bit_ops.h>
13
14
namespace Botan {
15
16
std::unique_ptr<HashFunction> SM3::copy_state() const
17
0
   {
18
0
   return std::make_unique<SM3>(*this);
19
0
   }
20
21
namespace {
22
23
const uint32_t SM3_IV[] = {
24
   0x7380166fUL, 0x4914b2b9UL, 0x172442d7UL, 0xda8a0600UL,
25
   0xa96f30bcUL, 0x163138aaUL, 0xe38dee4dUL, 0xb0fb0e4eUL
26
};
27
28
inline uint32_t P0(uint32_t X)
29
0
   {
30
0
   return X ^ rotl<9>(X) ^ rotl<17>(X);
31
0
   }
32
33
inline void R1(uint32_t A, uint32_t& B, uint32_t C, uint32_t& D,
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               uint32_t E, uint32_t& F, uint32_t G, uint32_t& H,
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               uint32_t TJ, uint32_t Wi, uint32_t Wj)
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0
   {
37
0
   const uint32_t A12 = rotl<12>(A);
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0
   const uint32_t SS1 = rotl<7>(A12 + E + TJ);
39
0
   const uint32_t TT1 = (A ^ B ^ C) + D + (SS1 ^ A12) + Wj;
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0
   const uint32_t TT2 = (E ^ F ^ G) + H + SS1 + Wi;
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42
0
   B = rotl<9>(B);
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0
   D = TT1;
44
0
   F = rotl<19>(F);
45
0
   H = P0(TT2);
46
0
   }
47
48
inline void R2(uint32_t A, uint32_t& B, uint32_t C, uint32_t& D,
49
               uint32_t E, uint32_t& F, uint32_t G, uint32_t& H,
50
               uint32_t TJ, uint32_t Wi, uint32_t Wj)
51
0
   {
52
0
   const uint32_t A12 = rotl<12>(A);
53
0
   const uint32_t SS1 = rotl<7>(A12 + E + TJ);
54
0
   const uint32_t TT1 = majority(A, B, C) + D + (SS1 ^ A12) + Wj;
55
0
   const uint32_t TT2 = choose(E, F, G) + H + SS1 + Wi;
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57
0
   B = rotl<9>(B);
58
0
   D = TT1;
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0
   F = rotl<19>(F);
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0
   H = P0(TT2);
61
0
   }
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63
inline uint32_t P1(uint32_t X)
64
0
   {
65
0
   return X ^ rotl<15>(X) ^ rotl<23>(X);
66
0
   }
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68
inline uint32_t SM3_E(uint32_t W0, uint32_t W7, uint32_t W13, uint32_t W3, uint32_t W10)
69
0
   {
70
0
   return P1(W0 ^ W7 ^ rotl<15>(W13)) ^ rotl<7>(W3) ^ W10;
71
0
   }
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73
}
74
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/*
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* SM3 Compression Function
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*/
78
void SM3::compress_n(const uint8_t input[], size_t blocks)
79
0
   {
80
0
   uint32_t A = m_digest[0], B = m_digest[1], C = m_digest[2], D = m_digest[3],
81
0
            E = m_digest[4], F = m_digest[5], G = m_digest[6], H = m_digest[7];
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83
0
   for(size_t i = 0; i != blocks; ++i)
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0
      {
85
0
      uint32_t W00 = load_be<uint32_t>(input, 0);
86
0
      uint32_t W01 = load_be<uint32_t>(input, 1);
87
0
      uint32_t W02 = load_be<uint32_t>(input, 2);
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0
      uint32_t W03 = load_be<uint32_t>(input, 3);
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0
      uint32_t W04 = load_be<uint32_t>(input, 4);
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0
      uint32_t W05 = load_be<uint32_t>(input, 5);
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0
      uint32_t W06 = load_be<uint32_t>(input, 6);
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0
      uint32_t W07 = load_be<uint32_t>(input, 7);
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0
      uint32_t W08 = load_be<uint32_t>(input, 8);
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0
      uint32_t W09 = load_be<uint32_t>(input, 9);
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0
      uint32_t W10 = load_be<uint32_t>(input, 10);
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0
      uint32_t W11 = load_be<uint32_t>(input, 11);
97
0
      uint32_t W12 = load_be<uint32_t>(input, 12);
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0
      uint32_t W13 = load_be<uint32_t>(input, 13);
99
0
      uint32_t W14 = load_be<uint32_t>(input, 14);
100
0
      uint32_t W15 = load_be<uint32_t>(input, 15);
101
102
0
      R1(A, B, C, D, E, F, G, H, 0x79CC4519, W00, W00 ^ W04);
103
0
      W00 = SM3_E(W00, W07, W13, W03, W10);
104
0
      R1(D, A, B, C, H, E, F, G, 0xF3988A32, W01, W01 ^ W05);
105
0
      W01 = SM3_E(W01, W08, W14, W04, W11);
106
0
      R1(C, D, A, B, G, H, E, F, 0xE7311465, W02, W02 ^ W06);
107
0
      W02 = SM3_E(W02, W09, W15, W05, W12);
108
0
      R1(B, C, D, A, F, G, H, E, 0xCE6228CB, W03, W03 ^ W07);
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0
      W03 = SM3_E(W03, W10, W00, W06, W13);
110
0
      R1(A, B, C, D, E, F, G, H, 0x9CC45197, W04, W04 ^ W08);
111
0
      W04 = SM3_E(W04, W11, W01, W07, W14);
112
0
      R1(D, A, B, C, H, E, F, G, 0x3988A32F, W05, W05 ^ W09);
113
0
      W05 = SM3_E(W05, W12, W02, W08, W15);
114
0
      R1(C, D, A, B, G, H, E, F, 0x7311465E, W06, W06 ^ W10);
115
0
      W06 = SM3_E(W06, W13, W03, W09, W00);
116
0
      R1(B, C, D, A, F, G, H, E, 0xE6228CBC, W07, W07 ^ W11);
117
0
      W07 = SM3_E(W07, W14, W04, W10, W01);
118
0
      R1(A, B, C, D, E, F, G, H, 0xCC451979, W08, W08 ^ W12);
119
0
      W08 = SM3_E(W08, W15, W05, W11, W02);
120
0
      R1(D, A, B, C, H, E, F, G, 0x988A32F3, W09, W09 ^ W13);
121
0
      W09 = SM3_E(W09, W00, W06, W12, W03);
122
0
      R1(C, D, A, B, G, H, E, F, 0x311465E7, W10, W10 ^ W14);
123
0
      W10 = SM3_E(W10, W01, W07, W13, W04);
124
0
      R1(B, C, D, A, F, G, H, E, 0x6228CBCE, W11, W11 ^ W15);
125
0
      W11 = SM3_E(W11, W02, W08, W14, W05);
126
0
      R1(A, B, C, D, E, F, G, H, 0xC451979C, W12, W12 ^ W00);
127
0
      W12 = SM3_E(W12, W03, W09, W15, W06);
128
0
      R1(D, A, B, C, H, E, F, G, 0x88A32F39, W13, W13 ^ W01);
129
0
      W13 = SM3_E(W13, W04, W10, W00, W07);
130
0
      R1(C, D, A, B, G, H, E, F, 0x11465E73, W14, W14 ^ W02);
131
0
      W14 = SM3_E(W14, W05, W11, W01, W08);
132
0
      R1(B, C, D, A, F, G, H, E, 0x228CBCE6, W15, W15 ^ W03);
133
0
      W15 = SM3_E(W15, W06, W12, W02, W09);
134
0
      R2(A, B, C, D, E, F, G, H, 0x9D8A7A87, W00, W00 ^ W04);
135
0
      W00 = SM3_E(W00, W07, W13, W03, W10);
136
0
      R2(D, A, B, C, H, E, F, G, 0x3B14F50F, W01, W01 ^ W05);
137
0
      W01 = SM3_E(W01, W08, W14, W04, W11);
138
0
      R2(C, D, A, B, G, H, E, F, 0x7629EA1E, W02, W02 ^ W06);
139
0
      W02 = SM3_E(W02, W09, W15, W05, W12);
140
0
      R2(B, C, D, A, F, G, H, E, 0xEC53D43C, W03, W03 ^ W07);
141
0
      W03 = SM3_E(W03, W10, W00, W06, W13);
142
0
      R2(A, B, C, D, E, F, G, H, 0xD8A7A879, W04, W04 ^ W08);
143
0
      W04 = SM3_E(W04, W11, W01, W07, W14);
144
0
      R2(D, A, B, C, H, E, F, G, 0xB14F50F3, W05, W05 ^ W09);
145
0
      W05 = SM3_E(W05, W12, W02, W08, W15);
146
0
      R2(C, D, A, B, G, H, E, F, 0x629EA1E7, W06, W06 ^ W10);
147
0
      W06 = SM3_E(W06, W13, W03, W09, W00);
148
0
      R2(B, C, D, A, F, G, H, E, 0xC53D43CE, W07, W07 ^ W11);
149
0
      W07 = SM3_E(W07, W14, W04, W10, W01);
150
0
      R2(A, B, C, D, E, F, G, H, 0x8A7A879D, W08, W08 ^ W12);
151
0
      W08 = SM3_E(W08, W15, W05, W11, W02);
152
0
      R2(D, A, B, C, H, E, F, G, 0x14F50F3B, W09, W09 ^ W13);
153
0
      W09 = SM3_E(W09, W00, W06, W12, W03);
154
0
      R2(C, D, A, B, G, H, E, F, 0x29EA1E76, W10, W10 ^ W14);
155
0
      W10 = SM3_E(W10, W01, W07, W13, W04);
156
0
      R2(B, C, D, A, F, G, H, E, 0x53D43CEC, W11, W11 ^ W15);
157
0
      W11 = SM3_E(W11, W02, W08, W14, W05);
158
0
      R2(A, B, C, D, E, F, G, H, 0xA7A879D8, W12, W12 ^ W00);
159
0
      W12 = SM3_E(W12, W03, W09, W15, W06);
160
0
      R2(D, A, B, C, H, E, F, G, 0x4F50F3B1, W13, W13 ^ W01);
161
0
      W13 = SM3_E(W13, W04, W10, W00, W07);
162
0
      R2(C, D, A, B, G, H, E, F, 0x9EA1E762, W14, W14 ^ W02);
163
0
      W14 = SM3_E(W14, W05, W11, W01, W08);
164
0
      R2(B, C, D, A, F, G, H, E, 0x3D43CEC5, W15, W15 ^ W03);
165
0
      W15 = SM3_E(W15, W06, W12, W02, W09);
166
0
      R2(A, B, C, D, E, F, G, H, 0x7A879D8A, W00, W00 ^ W04);
167
0
      W00 = SM3_E(W00, W07, W13, W03, W10);
168
0
      R2(D, A, B, C, H, E, F, G, 0xF50F3B14, W01, W01 ^ W05);
169
0
      W01 = SM3_E(W01, W08, W14, W04, W11);
170
0
      R2(C, D, A, B, G, H, E, F, 0xEA1E7629, W02, W02 ^ W06);
171
0
      W02 = SM3_E(W02, W09, W15, W05, W12);
172
0
      R2(B, C, D, A, F, G, H, E, 0xD43CEC53, W03, W03 ^ W07);
173
0
      W03 = SM3_E(W03, W10, W00, W06, W13);
174
0
      R2(A, B, C, D, E, F, G, H, 0xA879D8A7, W04, W04 ^ W08);
175
0
      W04 = SM3_E(W04, W11, W01, W07, W14);
176
0
      R2(D, A, B, C, H, E, F, G, 0x50F3B14F, W05, W05 ^ W09);
177
0
      W05 = SM3_E(W05, W12, W02, W08, W15);
178
0
      R2(C, D, A, B, G, H, E, F, 0xA1E7629E, W06, W06 ^ W10);
179
0
      W06 = SM3_E(W06, W13, W03, W09, W00);
180
0
      R2(B, C, D, A, F, G, H, E, 0x43CEC53D, W07, W07 ^ W11);
181
0
      W07 = SM3_E(W07, W14, W04, W10, W01);
182
0
      R2(A, B, C, D, E, F, G, H, 0x879D8A7A, W08, W08 ^ W12);
183
0
      W08 = SM3_E(W08, W15, W05, W11, W02);
184
0
      R2(D, A, B, C, H, E, F, G, 0x0F3B14F5, W09, W09 ^ W13);
185
0
      W09 = SM3_E(W09, W00, W06, W12, W03);
186
0
      R2(C, D, A, B, G, H, E, F, 0x1E7629EA, W10, W10 ^ W14);
187
0
      W10 = SM3_E(W10, W01, W07, W13, W04);
188
0
      R2(B, C, D, A, F, G, H, E, 0x3CEC53D4, W11, W11 ^ W15);
189
0
      W11 = SM3_E(W11, W02, W08, W14, W05);
190
0
      R2(A, B, C, D, E, F, G, H, 0x79D8A7A8, W12, W12 ^ W00);
191
0
      W12 = SM3_E(W12, W03, W09, W15, W06);
192
0
      R2(D, A, B, C, H, E, F, G, 0xF3B14F50, W13, W13 ^ W01);
193
0
      W13 = SM3_E(W13, W04, W10, W00, W07);
194
0
      R2(C, D, A, B, G, H, E, F, 0xE7629EA1, W14, W14 ^ W02);
195
0
      W14 = SM3_E(W14, W05, W11, W01, W08);
196
0
      R2(B, C, D, A, F, G, H, E, 0xCEC53D43, W15, W15 ^ W03);
197
0
      W15 = SM3_E(W15, W06, W12, W02, W09);
198
0
      R2(A, B, C, D, E, F, G, H, 0x9D8A7A87, W00, W00 ^ W04);
199
0
      W00 = SM3_E(W00, W07, W13, W03, W10);
200
0
      R2(D, A, B, C, H, E, F, G, 0x3B14F50F, W01, W01 ^ W05);
201
0
      W01 = SM3_E(W01, W08, W14, W04, W11);
202
0
      R2(C, D, A, B, G, H, E, F, 0x7629EA1E, W02, W02 ^ W06);
203
0
      W02 = SM3_E(W02, W09, W15, W05, W12);
204
0
      R2(B, C, D, A, F, G, H, E, 0xEC53D43C, W03, W03 ^ W07);
205
0
      W03 = SM3_E(W03, W10, W00, W06, W13);
206
0
      R2(A, B, C, D, E, F, G, H, 0xD8A7A879, W04, W04 ^ W08);
207
0
      R2(D, A, B, C, H, E, F, G, 0xB14F50F3, W05, W05 ^ W09);
208
0
      R2(C, D, A, B, G, H, E, F, 0x629EA1E7, W06, W06 ^ W10);
209
0
      R2(B, C, D, A, F, G, H, E, 0xC53D43CE, W07, W07 ^ W11);
210
0
      R2(A, B, C, D, E, F, G, H, 0x8A7A879D, W08, W08 ^ W12);
211
0
      R2(D, A, B, C, H, E, F, G, 0x14F50F3B, W09, W09 ^ W13);
212
0
      R2(C, D, A, B, G, H, E, F, 0x29EA1E76, W10, W10 ^ W14);
213
0
      R2(B, C, D, A, F, G, H, E, 0x53D43CEC, W11, W11 ^ W15);
214
0
      R2(A, B, C, D, E, F, G, H, 0xA7A879D8, W12, W12 ^ W00);
215
0
      R2(D, A, B, C, H, E, F, G, 0x4F50F3B1, W13, W13 ^ W01);
216
0
      R2(C, D, A, B, G, H, E, F, 0x9EA1E762, W14, W14 ^ W02);
217
0
      R2(B, C, D, A, F, G, H, E, 0x3D43CEC5, W15, W15 ^ W03);
218
219
0
      A = (m_digest[0] ^= A);
220
0
      B = (m_digest[1] ^= B);
221
0
      C = (m_digest[2] ^= C);
222
0
      D = (m_digest[3] ^= D);
223
0
      E = (m_digest[4] ^= E);
224
0
      F = (m_digest[5] ^= F);
225
0
      G = (m_digest[6] ^= G);
226
0
      H = (m_digest[7] ^= H);
227
228
0
      input += hash_block_size();
229
0
      }
230
0
   }
231
232
/*
233
* Copy out the digest
234
*/
235
void SM3::copy_out(uint8_t output[])
236
0
   {
237
0
   copy_out_vec_be(output, output_length(), m_digest);
238
0
   }
239
240
/*
241
* Clear memory of sensitive data
242
*/
243
void SM3::clear()
244
0
   {
245
0
   MDx_HashFunction::clear();
246
0
   std::copy(std::begin(SM3_IV), std::end(SM3_IV), m_digest.begin());
247
0
   }
248
249
}