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
|
;;
;; Copyright (c) 2012-2018, Intel Corporation
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions are met:
;;
;; * Redistributions of source code must retain the above copyright notice,
;; this list of conditions and the following disclaimer.
;; * Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in the
;; documentation and/or other materials provided with the distribution.
;; * Neither the name of Intel Corporation nor the names of its contributors
;; may be used to endorse or promote products derived from this software
;; without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
;; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
;; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
;; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
;; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
;; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
;; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
;; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;
;;; Routine to do a 128 bit CBC AES encryption / CBC-MAC digest computation
;;; processes 4 buffers at a time, single data structure as input
;;; Updates In and Out pointers at end
%include "os.asm"
%include "mb_mgr_datastruct.asm"
%define MOVDQ movdqu ;; assume buffers not aligned
%macro pxor2 2
MOVDQ XTMP, %2
pxor %1, XTMP
%endm
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; struct AES_ARGS_x8 {
;; void* in[8];
;; void* out[8];
;; UINT128* keys[8];
;; UINT128 IV[8];
;; }
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; void aes_cbc_enc_128_x4(AES_ARGS_x8 *args, UINT64 len);
;; arg 1: ARG : addr of AES_ARGS_x8 structure
;; arg 2: LEN : len (in units of bytes)
struc STACK
_gpr_save: resq 8
endstruc
%ifdef LINUX
%define arg1 rdi
%define arg2 rsi
%define arg3 rdx
%define arg4 rcx
%else
%define arg1 rcx
%define arg2 rdx
%define arg3 rdi ;r8
%define arg4 rsi ;r9
%endif
%define ARG arg1
%define LEN arg2
%define IDX rax
%define IN0 r8
%define KEYS0 rbx
%define IN1 r10
%define KEYS1 arg3
%define IN2 r12
%define KEYS2 arg4
%define IN3 r14
%define KEYS3 rbp
%ifndef CBC_MAC
;; No cipher text write back for CBC-MAC
%define OUT0 r9
%define OUT1 r11
%define OUT2 r13
%define OUT3 r15
%endif
%define XDATA0 xmm0
%define XDATA1 xmm1
%define XDATA2 xmm2
%define XDATA3 xmm3
%define XKEY0_3 xmm4
%define XKEY0_6 [KEYS0 + 16*6]
%define XTMP xmm5
%define XKEY0_9 xmm6
%define XKEY1_3 xmm7
%define XKEY1_6 xmm8
%define XKEY1_9 xmm9
%define XKEY2_3 xmm10
%define XKEY2_6 xmm11
%define XKEY2_9 xmm12
%define XKEY3_3 xmm13
%define XKEY3_6 xmm14
%define XKEY3_9 xmm15
section .text
%ifdef CBC_MAC
MKGLOBAL(aes128_cbc_mac_x4,function,internal)
aes128_cbc_mac_x4:
%else
MKGLOBAL(aes_cbc_enc_128_x4,function,internal)
aes_cbc_enc_128_x4:
%endif
sub rsp, STACK_size
mov [rsp + _gpr_save + 8*0], rbp
%ifdef CBC_MAC
mov [rsp + _gpr_save + 8*1], rbx
mov [rsp + _gpr_save + 8*2], r12
mov [rsp + _gpr_save + 8*3], r13
mov [rsp + _gpr_save + 8*4], r14
mov [rsp + _gpr_save + 8*5], r15
%ifndef LINUX
mov [rsp + _gpr_save + 8*6], rsi
mov [rsp + _gpr_save + 8*7], rdi
%endif
%endif
mov IDX, 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
mov IN0, [ARG + _aesarg_in + 8*0]
mov IN1, [ARG + _aesarg_in + 8*1]
mov IN2, [ARG + _aesarg_in + 8*2]
mov IN3, [ARG + _aesarg_in + 8*3]
MOVDQ XDATA0, [IN0] ; load first block of plain text
MOVDQ XDATA1, [IN1] ; load first block of plain text
MOVDQ XDATA2, [IN2] ; load first block of plain text
MOVDQ XDATA3, [IN3] ; load first block of plain text
mov KEYS0, [ARG + _aesarg_keys + 8*0]
mov KEYS1, [ARG + _aesarg_keys + 8*1]
mov KEYS2, [ARG + _aesarg_keys + 8*2]
mov KEYS3, [ARG + _aesarg_keys + 8*3]
pxor XDATA0, [ARG + _aesarg_IV + 16*0] ; plaintext XOR IV
pxor XDATA1, [ARG + _aesarg_IV + 16*1] ; plaintext XOR IV
pxor XDATA2, [ARG + _aesarg_IV + 16*2] ; plaintext XOR IV
pxor XDATA3, [ARG + _aesarg_IV + 16*3] ; plaintext XOR IV
%ifndef CBC_MAC
mov OUT0, [ARG + _aesarg_out + 8*0]
mov OUT1, [ARG + _aesarg_out + 8*1]
mov OUT2, [ARG + _aesarg_out + 8*2]
mov OUT3, [ARG + _aesarg_out + 8*3]
%endif
pxor XDATA0, [KEYS0 + 16*0] ; 0. ARK
pxor XDATA1, [KEYS1 + 16*0] ; 0. ARK
pxor XDATA2, [KEYS2 + 16*0] ; 0. ARK
pxor XDATA3, [KEYS3 + 16*0] ; 0. ARK
aesenc XDATA0, [KEYS0 + 16*1] ; 1. ENC
aesenc XDATA1, [KEYS1 + 16*1] ; 1. ENC
aesenc XDATA2, [KEYS2 + 16*1] ; 1. ENC
aesenc XDATA3, [KEYS3 + 16*1] ; 1. ENC
aesenc XDATA0, [KEYS0 + 16*2] ; 2. ENC
aesenc XDATA1, [KEYS1 + 16*2] ; 2. ENC
aesenc XDATA2, [KEYS2 + 16*2] ; 2. ENC
aesenc XDATA3, [KEYS3 + 16*2] ; 2. ENC
movdqa XKEY0_3, [KEYS0 + 16*3] ; load round 3 key
movdqa XKEY1_3, [KEYS1 + 16*3] ; load round 3 key
movdqa XKEY2_3, [KEYS2 + 16*3] ; load round 3 key
movdqa XKEY3_3, [KEYS3 + 16*3] ; load round 3 key
aesenc XDATA0, XKEY0_3 ; 3. ENC
aesenc XDATA1, XKEY1_3 ; 3. ENC
aesenc XDATA2, XKEY2_3 ; 3. ENC
aesenc XDATA3, XKEY3_3 ; 3. ENC
aesenc XDATA0, [KEYS0 + 16*4] ; 4. ENC
aesenc XDATA1, [KEYS1 + 16*4] ; 4. ENC
aesenc XDATA2, [KEYS2 + 16*4] ; 4. ENC
aesenc XDATA3, [KEYS3 + 16*4] ; 4. ENC
aesenc XDATA0, [KEYS0 + 16*5] ; 5. ENC
aesenc XDATA1, [KEYS1 + 16*5] ; 5. ENC
aesenc XDATA2, [KEYS2 + 16*5] ; 5. ENC
aesenc XDATA3, [KEYS3 + 16*5] ; 5. ENC
movdqa XKEY1_6, [KEYS1 + 16*6] ; load round 6 key
movdqa XKEY2_6, [KEYS2 + 16*6] ; load round 6 key
movdqa XKEY3_6, [KEYS3 + 16*6] ; load round 6 key
aesenc XDATA0, XKEY0_6 ; 6. ENC
aesenc XDATA1, XKEY1_6 ; 6. ENC
aesenc XDATA2, XKEY2_6 ; 6. ENC
aesenc XDATA3, XKEY3_6 ; 6. ENC
aesenc XDATA0, [KEYS0 + 16*7] ; 7. ENC
aesenc XDATA1, [KEYS1 + 16*7] ; 7. ENC
aesenc XDATA2, [KEYS2 + 16*7] ; 7. ENC
aesenc XDATA3, [KEYS3 + 16*7] ; 7. ENC
aesenc XDATA0, [KEYS0 + 16*8] ; 8. ENC
aesenc XDATA1, [KEYS1 + 16*8] ; 8. ENC
aesenc XDATA2, [KEYS2 + 16*8] ; 8. ENC
aesenc XDATA3, [KEYS3 + 16*8] ; 8. ENC
movdqa XKEY0_9, [KEYS0 + 16*9] ; load round 9 key
movdqa XKEY1_9, [KEYS1 + 16*9] ; load round 9 key
movdqa XKEY2_9, [KEYS2 + 16*9] ; load round 9 key
movdqa XKEY3_9, [KEYS3 + 16*9] ; load round 9 key
aesenc XDATA0, XKEY0_9 ; 9. ENC
aesenc XDATA1, XKEY1_9 ; 9. ENC
aesenc XDATA2, XKEY2_9 ; 9. ENC
aesenc XDATA3, XKEY3_9 ; 9. ENC
aesenclast XDATA0, [KEYS0 + 16*10] ; 10. ENC
aesenclast XDATA1, [KEYS1 + 16*10] ; 10. ENC
aesenclast XDATA2, [KEYS2 + 16*10] ; 10. ENC
aesenclast XDATA3, [KEYS3 + 16*10] ; 10. ENC
%ifndef CBC_MAC
MOVDQ [OUT0], XDATA0 ; write back ciphertext
MOVDQ [OUT1], XDATA1 ; write back ciphertext
MOVDQ [OUT2], XDATA2 ; write back ciphertext
MOVDQ [OUT3], XDATA3 ; write back ciphertext
%endif
cmp LEN, IDX
je done
main_loop:
pxor2 XDATA0, [IN0 + IDX] ; plaintext XOR IV
pxor2 XDATA1, [IN1 + IDX] ; plaintext XOR IV
pxor2 XDATA2, [IN2 + IDX] ; plaintext XOR IV
pxor2 XDATA3, [IN3 + IDX] ; plaintext XOR IV
pxor XDATA0, [KEYS0 + 16*0] ; 0. ARK
pxor XDATA1, [KEYS1 + 16*0] ; 0. ARK
pxor XDATA2, [KEYS2 + 16*0] ; 0. ARK
pxor XDATA3, [KEYS3 + 16*0] ; 0. ARK
aesenc XDATA0, [KEYS0 + 16*1] ; 1. ENC
aesenc XDATA1, [KEYS1 + 16*1] ; 1. ENC
aesenc XDATA2, [KEYS2 + 16*1] ; 1. ENC
aesenc XDATA3, [KEYS3 + 16*1] ; 1. ENC
aesenc XDATA0, [KEYS0 + 16*2] ; 2. ENC
aesenc XDATA1, [KEYS1 + 16*2] ; 2. ENC
aesenc XDATA2, [KEYS2 + 16*2] ; 2. ENC
aesenc XDATA3, [KEYS3 + 16*2] ; 2. ENC
aesenc XDATA0, XKEY0_3 ; 3. ENC
aesenc XDATA1, XKEY1_3 ; 3. ENC
aesenc XDATA2, XKEY2_3 ; 3. ENC
aesenc XDATA3, XKEY3_3 ; 3. ENC
aesenc XDATA0, [KEYS0 + 16*4] ; 4. ENC
aesenc XDATA1, [KEYS1 + 16*4] ; 4. ENC
aesenc XDATA2, [KEYS2 + 16*4] ; 4. ENC
aesenc XDATA3, [KEYS3 + 16*4] ; 4. ENC
aesenc XDATA0, [KEYS0 + 16*5] ; 5. ENC
aesenc XDATA1, [KEYS1 + 16*5] ; 5. ENC
aesenc XDATA2, [KEYS2 + 16*5] ; 5. ENC
aesenc XDATA3, [KEYS3 + 16*5] ; 5. ENC
aesenc XDATA0, XKEY0_6 ; 6. ENC
aesenc XDATA1, XKEY1_6 ; 6. ENC
aesenc XDATA2, XKEY2_6 ; 6. ENC
aesenc XDATA3, XKEY3_6 ; 6. ENC
aesenc XDATA0, [KEYS0 + 16*7] ; 7. ENC
aesenc XDATA1, [KEYS1 + 16*7] ; 7. ENC
aesenc XDATA2, [KEYS2 + 16*7] ; 7. ENC
aesenc XDATA3, [KEYS3 + 16*7] ; 7. ENC
aesenc XDATA0, [KEYS0 + 16*8] ; 8. ENC
aesenc XDATA1, [KEYS1 + 16*8] ; 8. ENC
aesenc XDATA2, [KEYS2 + 16*8] ; 8. ENC
aesenc XDATA3, [KEYS3 + 16*8] ; 8. ENC
aesenc XDATA0, XKEY0_9 ; 9. ENC
aesenc XDATA1, XKEY1_9 ; 9. ENC
aesenc XDATA2, XKEY2_9 ; 9. ENC
aesenc XDATA3, XKEY3_9 ; 9. ENC
aesenclast XDATA0, [KEYS0 + 16*10] ; 10. ENC
aesenclast XDATA1, [KEYS1 + 16*10] ; 10. ENC
aesenclast XDATA2, [KEYS2 + 16*10] ; 10. ENC
aesenclast XDATA3, [KEYS3 + 16*10] ; 10. ENC
%ifndef CBC_MAC
;; No cipher text write back for CBC-MAC
MOVDQ [OUT0 + IDX], XDATA0 ; write back ciphertext
MOVDQ [OUT1 + IDX], XDATA1 ; write back ciphertext
MOVDQ [OUT2 + IDX], XDATA2 ; write back ciphertext
MOVDQ [OUT3 + IDX], XDATA3 ; write back ciphertext
%endif
add IDX, 16
cmp LEN, IDX
jne main_loop
done:
;; update IV / store digest for CBC-MAC
movdqa [ARG + _aesarg_IV + 16*0], XDATA0
movdqa [ARG + _aesarg_IV + 16*1], XDATA1
movdqa [ARG + _aesarg_IV + 16*2], XDATA2
movdqa [ARG + _aesarg_IV + 16*3], XDATA3
;; update IN and OUT
add IN0, LEN
mov [ARG + _aesarg_in + 8*0], IN0
add IN1, LEN
mov [ARG + _aesarg_in + 8*1], IN1
add IN2, LEN
mov [ARG + _aesarg_in + 8*2], IN2
add IN3, LEN
mov [ARG + _aesarg_in + 8*3], IN3
%ifndef CBC_MAC
;; No OUT pointer updates for CBC-MAC
add OUT0, LEN
mov [ARG + _aesarg_out + 8*0], OUT0
add OUT1, LEN
mov [ARG + _aesarg_out + 8*1], OUT1
add OUT2, LEN
mov [ARG + _aesarg_out + 8*2], OUT2
add OUT3, LEN
mov [ARG + _aesarg_out + 8*3], OUT3
%endif
%ifdef CBC_MAC
mov rbx, [rsp + _gpr_save + 8*1]
mov r12, [rsp + _gpr_save + 8*2]
mov r13, [rsp + _gpr_save + 8*3]
mov r14, [rsp + _gpr_save + 8*4]
mov r15, [rsp + _gpr_save + 8*5]
%ifndef LINUX
mov rsi, [rsp + _gpr_save + 8*6]
mov rdi, [rsp + _gpr_save + 8*7]
%endif
%endif
mov rbp, [rsp + _gpr_save + 8*0]
add rsp, STACK_size
ret
%ifdef LINUX
section .note.GNU-stack noalloc noexec nowrite progbits
%endif
|
