-
Notifications
You must be signed in to change notification settings - Fork 4
/
keccak.asm
592 lines (569 loc) · 7.28 KB
/
keccak.asm
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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
; Keccak 256 cryptographic hash for Zilog Z80 processors
; Written by Daniel A. Nagy <[email protected]> in 2019
; Init
; Pollutes: BC,DE,HL
KECCAKI:CALL KECCAKQ
LD E,L
LD D,H
INC DE
LD (HL),0
LD BC,199
LDIR
RET
; Update
; In: A next byte to hash
; Pollutes: AF, AF', BC, BC', DE, DE', HL, HL', IX
KECCAKU:LD HL,(KECCAKP)
XOR (HL)
LD (HL),A
LD A,L
INC A
CP KECCAKS - 0x100 * (KECCAKS / 0x100) + 0x88
LD (KECCAKP),A
RET C
CALL KECCAKF
KECCAKQ:LD HL,KECCAKS
LD (KECCAKP),HL
RET
; Squeeze
; Out: A next byte from PRNG
; Pollutes: AF, AF', BC, BC', DE, DE', HL, HL', IX
KECCAKR:LD HL,(KECCAKP)
LD A,L
CP KECCAKS - 0x100 * (KECCAKS / 0x100) + 0x87
LD A,(HL)
JR NC,KECCAKO
INC HL
LD (KECCAKP),HL
RET
KECCAKO:PUSH AF
CALL KECCAKF
CALL KECCAKQ
POP AF
RET
; Finalize
; Out: hash value beginning at KECCAKS
; Pollutes: AF, AF', BC, BC', DE, DE', HL, HL', IX
KECCAK: LD HL,(KECCAKP)
LD H,KECCAKS / 0x100
LD A,1
XOR (HL)
LD (HL),A
LD A,(KECCAKS + 0x87)
XOR 0x80
LD (KECCAKS + 0x87),A
CALL KECCAKQ
; Shuffle
KECCAKF:LD B,24
KECCAKL:PUSH BC
; Theta
THETA: LD HL,KECCAKB
LD IX,KECCAKS+100
LD B,40
THETAL1:LD A,(IX-100)
XOR (IX-60)
XOR (IX-20)
XOR (IX+20)
XOR (IX+60)
LD (HL),A
INC L
DEFB 0xDD
INC L ; INC IXL
DJNZ THETAL1
LD D,H
LD B,5
XOR A
THETAL2:ADD A,A
ADD A,A
ADD A,A
LD L,A
LD E,40
LD C,E ; Prevent LDI from decrementing B
LDI
LDI
LDI
LDI
LDI
LDI
LDI
LDI
LD L,KECCAKB - 0x100 * (KECCAKB / 0x100) + 47
LD A,(HL)
ADD A,A
LD L,KECCAKB - 0x100 * (KECCAKB / 0x100) + 40
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
THETAR: LD A,B
SUB 2
JP P,THETAP
LD A,4
THETAP: ADD A,A
ADD A,A
ADD A,A
LD E,A
LD L,KECCAKB - 0x100 * (KECCAKB / 0x100) + 40
LD C,B
LD B,8
THETALX:LD A,(DE)
XOR (HL)
LD (HL),A
INC L
INC E
DJNZ THETALX
LD B,8
THETAL3:DEFB 0xDD
DEC L ; DEC IXL
DEC L
LD E,(HL)
LD A,(IX-100)
XOR E
LD (IX-100),A
LD A,(IX-60)
XOR E
LD (IX-60),A
LD A,(IX-20)
XOR E
LD (IX-20),A
LD A,(IX+20)
XOR E
LD (IX+20),A
LD A,(IX+60)
XOR E
LD (IX+60),A
DJNZ THETAL3
LD B,C
DEC B
LD A,B
JR NZ,THETAL2
; Rho & Pi
RHOPI: LD L,KECCAKS - 0x100 * (KECCAKS/0x100) + 8
LD E,B
LD C,8
LDIR
EXX
LD HL,RHOPIT - RHOPITE
LD BC,RHOPITE - RHOPIT
ADD HL,SP
LD SP,HL
EX DE,HL
LD HL,RHOPIT
LDIR ; Stack RHOPIT
RHOPIL: EXX
POP HL ; Pi table lookup
LDI
LDI
LDI
LDI
LDI
LDI
LDI
LDI
EXX
RET ; Rho table lookup
RHOPIR: DEFB 0x3E ; LD A,x
XOR A
EXX
EX DE,HL
LD L,7
DEC E
LDD
LDD
LDD
LDD
LDD
LDD
LDD
LDD
LD DE,KECCAKB
LD HL,KECCAKB+8
LDI
LDI
LDI
LDI
LDI
LDI
LDI
LDI
EXX
OR A
JR NZ,RHOPIL
; Chi
CHI: LD L,KECCAKS - 0x100 * (KECCAKS/0x100) - 40
LD B,5
CHIL0: PUSH BC
LD E,KECCAKB - 0x100 * (KECCAKB/0x100)
LD BC,40
ADD HL,BC
LDIR
LD IX,KECCAKB + 40 ; Same as DE, but it is faster this way
LD B,8
CHIL3: DEC L
DEFB 0xDD
DEC L ; DEC IXL
LD A,(IX - 0x20)
CPL
AND (IX - 0x18)
XOR (HL)
LD (HL),A
DJNZ CHIL3
LD B,8
CHIL2: DEC L
DEFB 0xDD
DEC L ; DEC IXL
LD A,(IX + 0x08)
CPL
AND (IX - 0x18)
XOR (HL)
LD (HL),A
DJNZ CHIL2
LD B,24
CHIL1: DEC L
DEFB 0xDD
DEC L ; DEC IXL
LD A,(IX + 0x08)
CPL
AND (IX + 0x10)
XOR (HL)
LD (HL),A
DJNZ CHIL1
POP BC
DJNZ CHIL0
; Iota
IOTA: LD D,KECCAKS / 0x100
POP BC
LD A,B
ADD A,A
ADD A,A
LD L,A ; E = B * 4
LD H,IOTAT / 0x100
LD E,KECCAKS - 0x100 * (KECCAKS / 0x100) + 7
LD A,(DE)
XOR (HL)
LD (DE),A
INC L
LD E,KECCAKS - 0x100 * (KECCAKS / 0x100) + 3
LD A,(DE)
XOR (HL)
LD (DE),A
INC L
LD E,KECCAKS - 0x100 * (KECCAKS / 0x100) + 1
LD A,(DE)
XOR (HL)
LD (DE),A
INC L
LD E,KECCAKS - 0x100 * (KECCAKS / 0x100) + 0
LD A,(DE)
XOR (HL)
LD (DE),A
DEC B
JP NZ,KECCAKL
RET
; Cyclic 64 bit rotation helper functions
; Pollutes: AF, AF', BC, DE, HL
ROTL18: CALL ROTL16 ; 16 + 1 + 1
JR ROTL2
ROTL6: CALL ROTL4 ; 4 + 1 + 1
ROTL2: CALL ROTL1 ; 1 + 1
ROTL1: LD HL,KECCAKB
SLA (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
INC L
RL (HL)
LD L,0
RET NC
SET 0,(HL)
RET
ROTL14: CALL ROTL16 ; 16 - 1 - 1
ROTL62: CALL ROTR1 ; 64 - 1 - 1
ROTR1: LD A,(KECCAKB)
RRA
LD HL,KECCAKB+7
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
DEC L
RR (HL)
RET
ROTL27: CALL ROTL24 ; 24 + 4 - 1
ROTL3: CALL ROTR1 ; 4 - 1
ROTL4: LD HL,KECCAKB
XOR A
RLD
INC L
RLD
INC L
RLD
INC L
RLD
INC L
RLD
INC L
RLD
INC L
RLD
INC L
RLD
LD L,0
OR (HL)
LD (HL),A
RET
ROTL61: CALL ROTL1 ; 64 - 4 + 1
ROTR4: LD A,(KECCAKB)
LD HL,KECCAKB+7
RRD
DEC L
RRD
DEC L
RRD
DEC L
RRD
DEC L
RRD
DEC L
RRD
DEC L
RRD
DEC L
RRD
RET
ROTL10: CALL ROTL2 ; 8 + 1 + 1
ROTL8: LD HL,KECCAKB+7
LD E,L
LD D,H
LD A,(HL)
DEC L
LDD ; Faster than LDDR
LDD
LDD
LDD
LDD
LDD
LDD
LD (DE),A
RET
ROTL55: CALL ROTR1 ; 64 - 8 - 1
ROTL56: EQU $ ; 64 - 8
ROTR8: LD HL,KECCAKB
LD A,(HL)
LD E,L
LD D,H
INC L
LDI
LDI
LDI
LDI
LDI
LDI
LDI
LD (DE),A
RET
ROTL15: CALL ROTR1 ; 16 - 1
JR ROTL16
ROTL21: CALL ROTL1 ; 16 + 4 + 1
ROTL20: CALL ROTL4 ; 16 + 4
ROTL16: LD HL,KECCAKB+7
LD C,0xFF
LD E,L
LD D,H
LD A,(HL)
DEC L
LD B,(HL)
DEC L
LDD
LDD
LDD
LDD
LDD
LDD
LD L,E
LD H,D
LD (HL),A
DEC L
LD (HL),B
RET
ROTL43: CALL ROTR1 ; 64 - 16 - 4 - 1
JR ROTL44
ROTL45: CALL ROTL1 ; 64 - 16 - 4 + 1
ROTL44: CALL ROTR4 ; 64 - 16 - 4
ROTR16: LD HL,KECCAKB
LD C,0xFF
LD A,(HL)
LD E,L
LD D,H
INC L
LD B,(HL)
INC L
LDI
LDI
LDI
LDI
LDI
LDI
LD L,E
LD (HL),A
INC L
LD (HL),B
RET
ROTL25: CALL ROTL1 ; 24 + 1
JR ROTL24
ROTL28: CALL ROTL4 ; 24 + 4
ROTL24: LD HL,KECCAKB+7
LD C,0xFF
LD E,L
LD D,H
LD A,(HL)
DEC L
EX AF,AF'
LD A,(HL)
DEC L
LD B,(HL)
DEC L
LDD
LDD
LDD
LDD
LDD
LD L,E
LD H,D
EX AF,AF'
LD (HL),A
DEC L
EX AF,AF'
LD (HL),A
DEC L
LD (HL),B
RET
ROTL39: CALL ROTR1 ; 64 - 24 - 1
JR ROTR24
ROTL41: CALL ROTL1 ; 64 - 24 + 1
ROTR24: LD HL,KECCAKB
LD C,0xFF
LD A,(HL)
LD E,L
LD D,H
INC L
EX AF,AF'
LD A,(HL)
INC L
LD B,(HL)
INC L
LDI
LDI
LDI
LDI
LDI
LD L,E
EX AF,AF'
LD (HL),A
INC L
EX AF,AF'
LD (HL),A
INC L
LD (HL),B
RET
ROTL36: CALL ROTL4 ; 32 + 4
ROT32: LD HL,KECCAKB
LD DE,KECCAKB+4
LD A,(DE)
LDI
DEC L
LD (HL),A
INC L
LD A,(DE)
LDI
DEC L
LD (HL),A
INC L
LD A,(DE)
LDI
DEC L
LD (HL),A
INC L
LD A,(DE)
LDI
DEC L
LD (HL),A
RET
RHOPIT: DEFW KECCAKS + 10 * 8
DEFW ROTL1,RHOPIR
DEFW KECCAKS + 7 * 8
DEFW ROTL3,RHOPIR
DEFW KECCAKS + 11 * 8
DEFW ROTL6,RHOPIR
DEFW KECCAKS + 17 * 8
DEFW ROTL10,RHOPIR
DEFW KECCAKS + 18 * 8
DEFW ROTL15,RHOPIR
DEFW KECCAKS + 3 * 8
DEFW ROTL21,RHOPIR
DEFW KECCAKS + 5 * 8
DEFW ROTL28,RHOPIR
DEFW KECCAKS + 16 * 8
DEFW ROTL36,RHOPIR
DEFW KECCAKS + 8 * 8
DEFW ROTL45,RHOPIR
DEFW KECCAKS + 21 * 8
DEFW ROTL55,RHOPIR
DEFW KECCAKS + 24 * 8
DEFW ROTL2,RHOPIR
DEFW KECCAKS + 4 * 8
DEFW ROTL14,RHOPIR
DEFW KECCAKS + 15 * 8
DEFW ROTL27,RHOPIR
DEFW KECCAKS + 23 * 8
DEFW ROTL41,RHOPIR
DEFW KECCAKS + 19 * 8
DEFW ROTL56,RHOPIR
DEFW KECCAKS + 13 * 8
DEFW ROTL8,RHOPIR
DEFW KECCAKS + 12 * 8
DEFW ROTL25,RHOPIR
DEFW KECCAKS + 2 * 8
DEFW ROTL43,RHOPIR
DEFW KECCAKS + 20 * 8
DEFW ROTL62,RHOPIR
DEFW KECCAKS + 14 * 8
DEFW ROTL18,RHOPIR
DEFW KECCAKS + 22 * 8
DEFW ROTL39,RHOPIR
DEFW KECCAKS + 9 * 8
DEFW ROTL61,RHOPIR
DEFW KECCAKS + 6 * 8
DEFW ROTL20,RHOPIR
DEFW KECCAKS + 1 * 8
DEFW ROTL44,RHOPIR+1
RHOPITE:EQU $