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
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
|
/* sm4-aarch64.S - ARMv8/AArch64 accelerated SM4 cipher
*
* Copyright (C) 2022 Alibaba Group.
* Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "asm-common-aarch64.h"
#if defined(__AARCH64EL__) && \
defined(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS) && \
defined(HAVE_GCC_INLINE_ASM_AARCH64_NEON) && \
defined(USE_SM4)
.cpu generic+simd
/* Constants */
SECTION_RODATA
.align 4
ELF(.type _gcry_sm4_aarch64_consts,@object)
_gcry_sm4_aarch64_consts:
.Lsm4_sbox:
.byte 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7
.byte 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05
.byte 0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3
.byte 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99
.byte 0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a
.byte 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62
.byte 0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95
.byte 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6
.byte 0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba
.byte 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8
.byte 0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b
.byte 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35
.byte 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2
.byte 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87
.byte 0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52
.byte 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e
.byte 0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5
.byte 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1
.byte 0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55
.byte 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3
.byte 0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60
.byte 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f
.byte 0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f
.byte 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51
.byte 0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f
.byte 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8
.byte 0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd
.byte 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0
.byte 0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e
.byte 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84
.byte 0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20
.byte 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48
ELF(.size _gcry_sm4_aarch64_consts,.-_gcry_sm4_aarch64_consts)
/* Register macros */
#define RTMP0 v8
#define RTMP1 v9
#define RTMP2 v10
#define RTMP3 v11
#define RX0 v12
#define RX1 v13
#define RKEY v14
#define RIV v15
/* Helper macros. */
#define preload_sbox(ptr) \
GET_DATA_POINTER(ptr, .Lsm4_sbox); \
ld1 {v16.16b-v19.16b}, [ptr], #64; \
ld1 {v20.16b-v23.16b}, [ptr], #64; \
ld1 {v24.16b-v27.16b}, [ptr], #64; \
ld1 {v28.16b-v31.16b}, [ptr];
#define transpose_4x4(s0, s1, s2, s3) \
zip1 RTMP0.4s, s0.4s, s1.4s; \
zip1 RTMP1.4s, s2.4s, s3.4s; \
zip2 RTMP2.4s, s0.4s, s1.4s; \
zip2 RTMP3.4s, s2.4s, s3.4s; \
zip1 s0.2d, RTMP0.2d, RTMP1.2d; \
zip2 s1.2d, RTMP0.2d, RTMP1.2d; \
zip1 s2.2d, RTMP2.2d, RTMP3.2d; \
zip2 s3.2d, RTMP2.2d, RTMP3.2d;
#define rotate_clockwise_90(s0, s1, s2, s3) \
zip1 RTMP0.4s, s1.4s, s0.4s; \
zip2 RTMP1.4s, s1.4s, s0.4s; \
zip1 RTMP2.4s, s3.4s, s2.4s; \
zip2 RTMP3.4s, s3.4s, s2.4s; \
zip1 s0.2d, RTMP2.2d, RTMP0.2d; \
zip2 s1.2d, RTMP2.2d, RTMP0.2d; \
zip1 s2.2d, RTMP3.2d, RTMP1.2d; \
zip2 s3.2d, RTMP3.2d, RTMP1.2d;
#define clear_volatile_vec_regs() \
CLEAR_REG(v0); CLEAR_REG(v1); CLEAR_REG(v2); CLEAR_REG(v3); \
CLEAR_REG(v4); CLEAR_REG(v5); CLEAR_REG(v6); \
/* v8-v15 are ABI callee saved. */ \
/* v16-v31 are loaded with non-secret (SM4 sbox). */
.text
.align 4
ELF(.type sm4_aarch64_crypt_blk1_4,%function;)
sm4_aarch64_crypt_blk1_4:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: num blocks (1..4)
*/
CFI_STARTPROC();
VPUSH_ABI;
preload_sbox(x5);
ld1 {v0.16b}, [x2], #16;
mov v1.16b, v0.16b;
mov v2.16b, v0.16b;
mov v3.16b, v0.16b;
cmp x3, #2;
blt .Lblk4_load_input_done;
ld1 {v1.16b}, [x2], #16;
beq .Lblk4_load_input_done;
ld1 {v2.16b}, [x2], #16;
cmp x3, #3;
beq .Lblk4_load_input_done;
ld1 {v3.16b}, [x2];
.Lblk4_load_input_done:
rev32 v0.16b, v0.16b;
rev32 v1.16b, v1.16b;
rev32 v2.16b, v2.16b;
rev32 v3.16b, v3.16b;
transpose_4x4(v0, v1, v2, v3);
#define ROUND(round, s0, s1, s2, s3) \
dup RX0.4s, RKEY.s[round]; \
/* rk ^ s1 ^ s2 ^ s3 */ \
eor RTMP1.16b, s2.16b, s3.16b; \
eor RX0.16b, RX0.16b, s1.16b; \
eor RX0.16b, RX0.16b, RTMP1.16b; \
\
/* sbox, non-linear part */ \
movi RTMP3.16b, #64; /* sizeof(sbox) / 4 */ \
tbl RTMP0.16b, {v16.16b-v19.16b}, RX0.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
tbx RTMP0.16b, {v20.16b-v23.16b}, RX0.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
tbx RTMP0.16b, {v24.16b-v27.16b}, RX0.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
tbx RTMP0.16b, {v28.16b-v31.16b}, RX0.16b; \
\
/* linear part */ \
shl RTMP1.4s, RTMP0.4s, #8; \
shl RTMP2.4s, RTMP0.4s, #16; \
shl RTMP3.4s, RTMP0.4s, #24; \
sri RTMP1.4s, RTMP0.4s, #(32-8); \
sri RTMP2.4s, RTMP0.4s, #(32-16); \
sri RTMP3.4s, RTMP0.4s, #(32-24); \
/* RTMP1 = x ^ rol32(x, 8) ^ rol32(x, 16) */ \
eor RTMP1.16b, RTMP1.16b, RTMP0.16b; \
eor RTMP1.16b, RTMP1.16b, RTMP2.16b; \
/* RTMP3 = x ^ rol32(x, 24) ^ rol32(RTMP1, 2) */ \
eor RTMP3.16b, RTMP3.16b, RTMP0.16b; \
shl RTMP2.4s, RTMP1.4s, 2; \
sri RTMP2.4s, RTMP1.4s, #(32-2); \
eor RTMP3.16b, RTMP3.16b, RTMP2.16b; \
/* s0 ^= RTMP3 */ \
eor s0.16b, s0.16b, RTMP3.16b;
mov x6, 8;
.Lroundloop4:
ld1 {RKEY.4s}, [x0], #16;
subs x6, x6, #1;
ROUND(0, v0, v1, v2, v3);
ROUND(1, v1, v2, v3, v0);
ROUND(2, v2, v3, v0, v1);
ROUND(3, v3, v0, v1, v2);
bne .Lroundloop4;
#undef ROUND
rotate_clockwise_90(v0, v1, v2, v3);
rev32 v0.16b, v0.16b;
rev32 v1.16b, v1.16b;
rev32 v2.16b, v2.16b;
rev32 v3.16b, v3.16b;
st1 {v0.16b}, [x1], #16;
cmp x3, #2;
blt .Lblk4_store_output_done;
st1 {v1.16b}, [x1], #16;
beq .Lblk4_store_output_done;
st1 {v2.16b}, [x1], #16;
cmp x3, #3;
beq .Lblk4_store_output_done;
st1 {v3.16b}, [x1];
.Lblk4_store_output_done:
VPOP_ABI;
ret_spec_stop;
CFI_ENDPROC();
ELF(.size sm4_aarch64_crypt_blk1_4,.-sm4_aarch64_crypt_blk1_4;)
.align 4
ELF(.type __sm4_crypt_blk8,%function;)
__sm4_crypt_blk8:
/* input:
* x0: round key array, CTX
* v16-v31: fill with sbox
* v0, v1, v2, v3, v4, v5, v6, v7: eight parallel plaintext blocks
* output:
* v0, v1, v2, v3, v4, v5, v6, v7: eight parallel ciphertext blocks
*/
CFI_STARTPROC();
rev32 v0.16b, v0.16b;
rev32 v1.16b, v1.16b;
rev32 v2.16b, v2.16b;
rev32 v3.16b, v3.16b;
rev32 v4.16b, v4.16b;
rev32 v5.16b, v5.16b;
rev32 v6.16b, v6.16b;
rev32 v7.16b, v7.16b;
transpose_4x4(v0, v1, v2, v3);
transpose_4x4(v4, v5, v6, v7);
#define ROUND(round, s0, s1, s2, s3, t0, t1, t2, t3) \
/* rk ^ s1 ^ s2 ^ s3 */ \
dup RX0.4s, RKEY.s[round]; \
eor RTMP0.16b, s2.16b, s3.16b; \
mov RX1.16b, RX0.16b; \
eor RTMP1.16b, t2.16b, t3.16b; \
eor RX0.16b, RX0.16b, s1.16b; \
eor RX1.16b, RX1.16b, t1.16b; \
eor RX0.16b, RX0.16b, RTMP0.16b; \
eor RX1.16b, RX1.16b, RTMP1.16b; \
\
/* sbox, non-linear part */ \
movi RTMP3.16b, #64; /* sizeof(sbox) / 4 */ \
tbl RTMP0.16b, {v16.16b-v19.16b}, RX0.16b; \
tbl RTMP1.16b, {v16.16b-v19.16b}, RX1.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
sub RX1.16b, RX1.16b, RTMP3.16b; \
tbx RTMP0.16b, {v20.16b-v23.16b}, RX0.16b; \
tbx RTMP1.16b, {v20.16b-v23.16b}, RX1.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
sub RX1.16b, RX1.16b, RTMP3.16b; \
tbx RTMP0.16b, {v24.16b-v27.16b}, RX0.16b; \
tbx RTMP1.16b, {v24.16b-v27.16b}, RX1.16b; \
sub RX0.16b, RX0.16b, RTMP3.16b; \
sub RX1.16b, RX1.16b, RTMP3.16b; \
tbx RTMP0.16b, {v28.16b-v31.16b}, RX0.16b; \
tbx RTMP1.16b, {v28.16b-v31.16b}, RX1.16b; \
\
/* linear part */ \
shl RX0.4s, RTMP0.4s, #8; \
shl RX1.4s, RTMP1.4s, #8; \
shl RTMP2.4s, RTMP0.4s, #16; \
shl RTMP3.4s, RTMP1.4s, #16; \
sri RX0.4s, RTMP0.4s, #(32 - 8); \
sri RX1.4s, RTMP1.4s, #(32 - 8); \
sri RTMP2.4s, RTMP0.4s, #(32 - 16); \
sri RTMP3.4s, RTMP1.4s, #(32 - 16); \
/* RX = x ^ rol32(x, 8) ^ rol32(x, 16) */ \
eor RX0.16b, RX0.16b, RTMP0.16b; \
eor RX1.16b, RX1.16b, RTMP1.16b; \
eor RX0.16b, RX0.16b, RTMP2.16b; \
eor RX1.16b, RX1.16b, RTMP3.16b; \
/* RTMP0/1 ^= x ^ rol32(x, 24) ^ rol32(RX, 2) */ \
shl RTMP2.4s, RTMP0.4s, #24; \
shl RTMP3.4s, RTMP1.4s, #24; \
sri RTMP2.4s, RTMP0.4s, #(32 - 24); \
sri RTMP3.4s, RTMP1.4s, #(32 - 24); \
eor RTMP0.16b, RTMP0.16b, RTMP2.16b; \
eor RTMP1.16b, RTMP1.16b, RTMP3.16b; \
shl RTMP2.4s, RX0.4s, #2; \
shl RTMP3.4s, RX1.4s, #2; \
sri RTMP2.4s, RX0.4s, #(32 - 2); \
sri RTMP3.4s, RX1.4s, #(32 - 2); \
eor RTMP0.16b, RTMP0.16b, RTMP2.16b; \
eor RTMP1.16b, RTMP1.16b, RTMP3.16b; \
/* s0/t0 ^= RTMP0/1 */ \
eor s0.16b, s0.16b, RTMP0.16b; \
eor t0.16b, t0.16b, RTMP1.16b;
mov x6, 8;
.Lroundloop8:
ld1 {RKEY.4s}, [x0], #16;
subs x6, x6, #1;
ROUND(0, v0, v1, v2, v3, v4, v5, v6, v7);
ROUND(1, v1, v2, v3, v0, v5, v6, v7, v4);
ROUND(2, v2, v3, v0, v1, v6, v7, v4, v5);
ROUND(3, v3, v0, v1, v2, v7, v4, v5, v6);
bne .Lroundloop8;
#undef ROUND
rotate_clockwise_90(v0, v1, v2, v3);
rotate_clockwise_90(v4, v5, v6, v7);
rev32 v0.16b, v0.16b;
rev32 v1.16b, v1.16b;
rev32 v2.16b, v2.16b;
rev32 v3.16b, v3.16b;
rev32 v4.16b, v4.16b;
rev32 v5.16b, v5.16b;
rev32 v6.16b, v6.16b;
rev32 v7.16b, v7.16b;
sub x0, x0, #128; /* repoint to rkey */
ret;
CFI_ENDPROC();
ELF(.size __sm4_crypt_blk8,.-__sm4_crypt_blk8;)
.align 4
.global _gcry_sm4_aarch64_crypt_blk1_8
ELF(.type _gcry_sm4_aarch64_crypt_blk1_8,%function;)
_gcry_sm4_aarch64_crypt_blk1_8:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: num blocks (1..8)
*/
CFI_STARTPROC();
cmp x3, #5;
blt sm4_aarch64_crypt_blk1_4;
stp x29, x30, [sp, #-16]!;
CFI_ADJUST_CFA_OFFSET(16);
CFI_REG_ON_STACK(29, 0);
CFI_REG_ON_STACK(30, 8);
VPUSH_ABI;
preload_sbox(x5);
ld1 {v0.16b-v3.16b}, [x2], #64;
ld1 {v4.16b}, [x2], #16;
mov v5.16b, v4.16b;
mov v6.16b, v4.16b;
mov v7.16b, v4.16b;
beq .Lblk8_load_input_done;
ld1 {v5.16b}, [x2], #16;
cmp x3, #7;
blt .Lblk8_load_input_done;
ld1 {v6.16b}, [x2], #16;
beq .Lblk8_load_input_done;
ld1 {v7.16b}, [x2];
.Lblk8_load_input_done:
bl __sm4_crypt_blk8;
cmp x3, #6;
st1 {v0.16b-v3.16b}, [x1], #64;
st1 {v4.16b}, [x1], #16;
blt .Lblk8_store_output_done;
st1 {v5.16b}, [x1], #16;
beq .Lblk8_store_output_done;
st1 {v6.16b}, [x1], #16;
cmp x3, #7;
beq .Lblk8_store_output_done;
st1 {v7.16b}, [x1];
.Lblk8_store_output_done:
VPOP_ABI;
clear_volatile_vec_regs();
ldp x29, x30, [sp], #16;
CFI_ADJUST_CFA_OFFSET(-16);
CFI_RESTORE(x29);
CFI_RESTORE(x30);
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_aarch64_crypt_blk1_8,.-_gcry_sm4_aarch64_crypt_blk1_8;)
.align 4
.global _gcry_sm4_aarch64_crypt
ELF(.type _gcry_sm4_aarch64_crypt,%function;)
_gcry_sm4_aarch64_crypt:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: nblocks (multiples of 8)
*/
CFI_STARTPROC();
stp x29, x30, [sp, #-16]!;
CFI_ADJUST_CFA_OFFSET(16);
CFI_REG_ON_STACK(29, 0);
CFI_REG_ON_STACK(30, 8);
VPUSH_ABI;
preload_sbox(x5);
.Lcrypt_loop_blk:
subs x3, x3, #8;
bmi .Lcrypt_end;
ld1 {v0.16b-v3.16b}, [x2], #64;
ld1 {v4.16b-v7.16b}, [x2], #64;
bl __sm4_crypt_blk8;
st1 {v0.16b-v3.16b}, [x1], #64;
st1 {v4.16b-v7.16b}, [x1], #64;
b .Lcrypt_loop_blk;
.Lcrypt_end:
VPOP_ABI;
clear_volatile_vec_regs();
ldp x29, x30, [sp], #16;
CFI_ADJUST_CFA_OFFSET(-16);
CFI_RESTORE(x29);
CFI_RESTORE(x30);
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_aarch64_crypt,.-_gcry_sm4_aarch64_crypt;)
.align 4
.global _gcry_sm4_aarch64_cbc_dec
ELF(.type _gcry_sm4_aarch64_cbc_dec,%function;)
_gcry_sm4_aarch64_cbc_dec:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: iv (big endian, 128 bit)
* x4: nblocks (multiples of 8)
*/
CFI_STARTPROC();
stp x29, x30, [sp, #-16]!;
CFI_ADJUST_CFA_OFFSET(16);
CFI_REG_ON_STACK(29, 0);
CFI_REG_ON_STACK(30, 8);
VPUSH_ABI;
preload_sbox(x5);
ld1 {RIV.16b}, [x3];
.Lcbc_loop_blk:
subs x4, x4, #8;
bmi .Lcbc_end;
ld1 {v0.16b-v3.16b}, [x2], #64;
ld1 {v4.16b-v7.16b}, [x2];
bl __sm4_crypt_blk8;
sub x2, x2, #64;
eor v0.16b, v0.16b, RIV.16b;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v1.16b, v1.16b, RTMP0.16b;
eor v2.16b, v2.16b, RTMP1.16b;
eor v3.16b, v3.16b, RTMP2.16b;
st1 {v0.16b-v3.16b}, [x1], #64;
eor v4.16b, v4.16b, RTMP3.16b;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v5.16b, v5.16b, RTMP0.16b;
eor v6.16b, v6.16b, RTMP1.16b;
eor v7.16b, v7.16b, RTMP2.16b;
mov RIV.16b, RTMP3.16b;
st1 {v4.16b-v7.16b}, [x1], #64;
b .Lcbc_loop_blk;
.Lcbc_end:
/* store new IV */
st1 {RIV.16b}, [x3];
VPOP_ABI;
clear_volatile_vec_regs();
ldp x29, x30, [sp], #16;
CFI_ADJUST_CFA_OFFSET(-16);
CFI_RESTORE(x29);
CFI_RESTORE(x30);
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_aarch64_cbc_dec,.-_gcry_sm4_aarch64_cbc_dec;)
.align 4
.global _gcry_sm4_aarch64_cfb_dec
ELF(.type _gcry_sm4_aarch64_cfb_dec,%function;)
_gcry_sm4_aarch64_cfb_dec:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: iv (big endian, 128 bit)
* x4: nblocks (multiples of 8)
*/
CFI_STARTPROC();
stp x29, x30, [sp, #-16]!;
CFI_ADJUST_CFA_OFFSET(16);
CFI_REG_ON_STACK(29, 0);
CFI_REG_ON_STACK(30, 8);
VPUSH_ABI;
preload_sbox(x5);
ld1 {v0.16b}, [x3];
.Lcfb_loop_blk:
subs x4, x4, #8;
bmi .Lcfb_end;
ld1 {v1.16b, v2.16b, v3.16b}, [x2], #48;
ld1 {v4.16b-v7.16b}, [x2];
bl __sm4_crypt_blk8;
sub x2, x2, #48;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v0.16b, v0.16b, RTMP0.16b;
eor v1.16b, v1.16b, RTMP1.16b;
eor v2.16b, v2.16b, RTMP2.16b;
eor v3.16b, v3.16b, RTMP3.16b;
st1 {v0.16b-v3.16b}, [x1], #64;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v4.16b, v4.16b, RTMP0.16b;
eor v5.16b, v5.16b, RTMP1.16b;
eor v6.16b, v6.16b, RTMP2.16b;
eor v7.16b, v7.16b, RTMP3.16b;
st1 {v4.16b-v7.16b}, [x1], #64;
mov v0.16b, RTMP3.16b;
b .Lcfb_loop_blk;
.Lcfb_end:
/* store new IV */
st1 {v0.16b}, [x3];
VPOP_ABI;
clear_volatile_vec_regs();
ldp x29, x30, [sp], #16;
CFI_ADJUST_CFA_OFFSET(-16);
CFI_RESTORE(x29);
CFI_RESTORE(x30);
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_aarch64_cfb_dec,.-_gcry_sm4_aarch64_cfb_dec;)
.align 4
.global _gcry_sm4_aarch64_ctr_enc
ELF(.type _gcry_sm4_aarch64_ctr_enc,%function;)
_gcry_sm4_aarch64_ctr_enc:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: ctr (big endian, 128 bit)
* x4: nblocks (multiples of 8)
*/
CFI_STARTPROC();
stp x29, x30, [sp, #-16]!;
CFI_ADJUST_CFA_OFFSET(16);
CFI_REG_ON_STACK(29, 0);
CFI_REG_ON_STACK(30, 8);
VPUSH_ABI;
preload_sbox(x5);
ldp x7, x8, [x3];
rev x7, x7;
rev x8, x8;
.Lctr_loop_blk:
subs x4, x4, #8;
bmi .Lctr_end;
#define inc_le128(vctr) \
mov vctr.d[1], x8; \
mov vctr.d[0], x7; \
adds x8, x8, #1; \
adc x7, x7, xzr; \
rev64 vctr.16b, vctr.16b;
/* construct CTRs */
inc_le128(v0); /* +0 */
inc_le128(v1); /* +1 */
inc_le128(v2); /* +2 */
inc_le128(v3); /* +3 */
inc_le128(v4); /* +4 */
inc_le128(v5); /* +5 */
inc_le128(v6); /* +6 */
inc_le128(v7); /* +7 */
bl __sm4_crypt_blk8;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v0.16b, v0.16b, RTMP0.16b;
eor v1.16b, v1.16b, RTMP1.16b;
eor v2.16b, v2.16b, RTMP2.16b;
eor v3.16b, v3.16b, RTMP3.16b;
st1 {v0.16b-v3.16b}, [x1], #64;
ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
eor v4.16b, v4.16b, RTMP0.16b;
eor v5.16b, v5.16b, RTMP1.16b;
eor v6.16b, v6.16b, RTMP2.16b;
eor v7.16b, v7.16b, RTMP3.16b;
st1 {v4.16b-v7.16b}, [x1], #64;
b .Lctr_loop_blk;
.Lctr_end:
/* store new CTR */
rev x7, x7;
rev x8, x8;
stp x7, x8, [x3];
VPOP_ABI;
clear_volatile_vec_regs();
ldp x29, x30, [sp], #16;
CFI_ADJUST_CFA_OFFSET(-16);
CFI_RESTORE(x29);
CFI_RESTORE(x30);
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_aarch64_ctr_enc,.-_gcry_sm4_aarch64_ctr_enc;)
#endif
|
