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
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
/*
* SHA-256 hash in AArch64 assembly
*
* Copyright (c) 2020 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>. (MIT License)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* - The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* - The Software is provided "as is", without warranty of any kind, express or
* implied, including but not limited to the warranties of merchantability,
* fitness for a particular purpose and noninfringement. In no event shall the
* authors or copyright holders be liable for any claim, damages or other
* liability, whether in an action of contract, tort or otherwise, arising from,
* out of or in connection with the Software or the use or other dealings in the
* Software.
*/
/* void sha256_compress(uint32_t state[8], const uint8_t block[64]) */
.global sha256_compress
sha256_compress:
/*
* Storage usage:
* Bytes Location Description
* 4 x0 state argument
* 4 x1 block argument
* 4 x2 pointer to k
* 16 q0 state0
* 16 q1 state1
* 16 q2 abef
* 16 q3 cdgh
* 16 q4 k0
* 16 q5 k1
* 16 q8 W0
* 16 q9 W1
* 16 q10 W2
* 16 q11 W3
*/
// save the lower half of q8-q11
stp d8, d9, [sp,#-32]!
stp d10, d11, [sp,#16]
// Load state in registers
ldp q0, q1, [x0]
mov v2.16b, v0.16b
mov v3.16b, v1.16b
// Load block in registers
ld1 {v8.4s-v11.4s}, [x1]
// TODO: only do that on little endian
rev32 v8.16b, v8.16b
rev32 v9.16b, v9.16b
rev32 v10.16b, v10.16b
rev32 v11.16b, v11.16b
// Compute the pointer to k
adrp x2, .K
add x2, x2, :lo12:.K
// load k
ld1 {v16.4s-v19.4s}, [x2], #64
ld1 {v20.4s-v23.4s}, [x2], #64
ld1 {v24.4s-v27.4s}, [x2], #64
ld1 {v28.4s-v31.4s}, [x2]
add v6.4s, v8.4s, v16.4s
// Rounds 0-3
sha256su0 v8.4s, v9.4s
mov v4.16b, v2.16b
add v7.4s, v9.4s, v17.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v8.4s, v10.4s, v11.4s
// Rounds 4-7
sha256su0 v9.4s, v10.4s
mov v4.16b, v2.16b
add v6.4s, v10.4s, v18.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v9.4s, v11.4s, v8.4s
// Rounds 8-11
sha256su0 v10.4s, v11.4s
mov v4.16b, v2.16b
add v7.4s, v11.4s, v19.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v10.4s, v8.4s, v9.4s
// Rounds 12-15
sha256su0 v11.4s, v8.4s
mov v4.16b, v2.16b
add v6.4s, v8.4s, v20.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v11.4s, v9.4s, v10.4s
// Rounds 16-19
sha256su0 v8.4s, v9.4s
mov v4.16b, v2.16b
add v7.4s, v9.4s, v21.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v8.4s, v10.4s, v11.4s
// Rounds 20-23
sha256su0 v9.4s, v10.4s
mov v4.16b, v2.16b
add v6.4s, v10.4s, v22.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v9.4s, v11.4s, v8.4s
// Rounds 24-27
sha256su0 v10.4s, v11.4s
mov v4.16b, v2.16b
add v7.4s, v11.4s, v23.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v10.4s, v8.4s, v9.4s
// Rounds 28-31
sha256su0 v11.4s, v8.4s
mov v4.16b, v2.16b
add v6.4s, v8.4s, v24.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v11.4s, v9.4s, v10.4s
// Rounds 32-35
sha256su0 v8.4s, v9.4s
mov v4.16b, v2.16b
add v7.4s, v9.4s, v25.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v8.4s, v10.4s, v11.4s
// Rounds 36-39
sha256su0 v9.4s, v10.4s
mov v4.16b, v2.16b
add v6.4s, v10.4s, v26.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v9.4s, v11.4s, v8.4s
// Rounds 40-43
sha256su0 v10.4s, v11.4s
mov v4.16b, v2.16b
add v7.4s, v11.4s, v27.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
sha256su1 v10.4s, v8.4s, v9.4s
// Rounds 44-47
sha256su0 v11.4s, v8.4s
mov v4.16b, v2.16b
add v6.4s, v8.4s, v28.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
sha256su1 v11.4s, v9.4s, v10.4s
// Rounds 48-51
mov v4.16b, v2.16b
add v7.4s, v9.4s, v29.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
// Rounds 52-55
mov v4.16b, v2.16b
add v6.4s, v10.4s, v30.4s
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
// Rounds 56-59
mov v4.16b, v2.16b
add v7.4s, v11.4s, v31.4s
sha256h q2, q3, v6.4s
sha256h2 q3, q4, v6.4s
// Rounds 60-63
mov v4.16b, v2.16b
sha256h q2, q3, v7.4s
sha256h2 q3, q4, v7.4s
// Update state
add v0.4s, v0.4s, v2.4s
add v1.4s, v1.4s, v3.4s
stp q0, q1, [x0]
// restore
ldp d10, d11, [sp,#16]
ldp d8, d9, [sp],#32
ret
.align 4
.K:
.word 0x428A2F98
.word 0x71374491
.word 0xB5C0FBCF
.word 0xE9B5DBA5
.word 0x3956C25B
.word 0x59F111F1
.word 0x923F82A4
.word 0xAB1C5ED5
.word 0xD807AA98
.word 0x12835B01
.word 0x243185BE
.word 0x550C7DC3
.word 0x72BE5D74
.word 0x80DEB1FE
.word 0x9BDC06A7
.word 0xC19BF174
.word 0xE49B69C1
.word 0xEFBE4786
.word 0x0FC19DC6
.word 0x240CA1CC
.word 0x2DE92C6F
.word 0x4A7484AA
.word 0x5CB0A9DC
.word 0x76F988DA
.word 0x983E5152
.word 0xA831C66D
.word 0xB00327C8
.word 0xBF597FC7
.word 0xC6E00BF3
.word 0xD5A79147
.word 0x06CA6351
.word 0x14292967
.word 0x27B70A85
.word 0x2E1B2138
.word 0x4D2C6DFC
.word 0x53380D13
.word 0x650A7354
.word 0x766A0ABB
.word 0x81C2C92E
.word 0x92722C85
.word 0xA2BFE8A1
.word 0xA81A664B
.word 0xC24B8B70
.word 0xC76C51A3
.word 0xD192E819
.word 0xD6990624
.word 0xF40E3585
.word 0x106AA070
.word 0x19A4C116
.word 0x1E376C08
.word 0x2748774C
.word 0x34B0BCB5
.word 0x391C0CB3
.word 0x4ED8AA4A
.word 0x5B9CCA4F
.word 0x682E6FF3
.word 0x748F82EE
.word 0x78A5636F
.word 0x84C87814
.word 0x8CC70208
.word 0x90BEFFFA
.word 0xA4506CEB
.word 0xBEF9A3F7
.word 0xC67178F2
|
