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54b6a1bd HY |
1 | /* |
2 | * Implement AES algorithm in Intel AES-NI instructions. | |
3 | * | |
4 | * The white paper of AES-NI instructions can be downloaded from: | |
5 | * http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf | |
6 | * | |
7 | * Copyright (C) 2008, Intel Corp. | |
8 | * Author: Huang Ying <ying.huang@intel.com> | |
9 | * Vinodh Gopal <vinodh.gopal@intel.com> | |
10 | * Kahraman Akdemir | |
11 | * | |
0bd82f5f TS |
12 | * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD |
13 | * interface for 64-bit kernels. | |
14 | * Authors: Erdinc Ozturk (erdinc.ozturk@intel.com) | |
15 | * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
16 | * Adrian Hoban <adrian.hoban@intel.com> | |
17 | * James Guilford (james.guilford@intel.com) | |
18 | * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
19 | * Tadeusz Struk (tadeusz.struk@intel.com) | |
20 | * Wajdi Feghali (wajdi.k.feghali@intel.com) | |
21 | * Copyright (c) 2010, Intel Corporation. | |
22 | * | |
0d258efb MK |
23 | * Ported x86_64 version to x86: |
24 | * Author: Mathias Krause <minipli@googlemail.com> | |
25 | * | |
54b6a1bd HY |
26 | * This program is free software; you can redistribute it and/or modify |
27 | * it under the terms of the GNU General Public License as published by | |
28 | * the Free Software Foundation; either version 2 of the License, or | |
29 | * (at your option) any later version. | |
30 | */ | |
31 | ||
32 | #include <linux/linkage.h> | |
b369e521 | 33 | #include <asm/inst.h> |
54b6a1bd | 34 | |
559ad0ff | 35 | #ifdef __x86_64__ |
0bd82f5f | 36 | .data |
c456a9cd JK |
37 | .align 16 |
38 | .Lgf128mul_x_ble_mask: | |
39 | .octa 0x00000000000000010000000000000087 | |
40 | ||
0bd82f5f TS |
41 | POLY: .octa 0xC2000000000000000000000000000001 |
42 | TWOONE: .octa 0x00000001000000000000000000000001 | |
43 | ||
44 | # order of these constants should not change. | |
45 | # more specifically, ALL_F should follow SHIFT_MASK, | |
46 | # and ZERO should follow ALL_F | |
47 | ||
48 | SHUF_MASK: .octa 0x000102030405060708090A0B0C0D0E0F | |
49 | MASK1: .octa 0x0000000000000000ffffffffffffffff | |
50 | MASK2: .octa 0xffffffffffffffff0000000000000000 | |
51 | SHIFT_MASK: .octa 0x0f0e0d0c0b0a09080706050403020100 | |
52 | ALL_F: .octa 0xffffffffffffffffffffffffffffffff | |
53 | ZERO: .octa 0x00000000000000000000000000000000 | |
54 | ONE: .octa 0x00000000000000000000000000000001 | |
55 | F_MIN_MASK: .octa 0xf1f2f3f4f5f6f7f8f9fafbfcfdfeff0 | |
56 | dec: .octa 0x1 | |
57 | enc: .octa 0x2 | |
58 | ||
59 | ||
54b6a1bd HY |
60 | .text |
61 | ||
0bd82f5f TS |
62 | |
63 | #define STACK_OFFSET 8*3 | |
64 | #define HashKey 16*0 // store HashKey <<1 mod poly here | |
65 | #define HashKey_2 16*1 // store HashKey^2 <<1 mod poly here | |
66 | #define HashKey_3 16*2 // store HashKey^3 <<1 mod poly here | |
67 | #define HashKey_4 16*3 // store HashKey^4 <<1 mod poly here | |
68 | #define HashKey_k 16*4 // store XOR of High 64 bits and Low 64 | |
69 | // bits of HashKey <<1 mod poly here | |
70 | //(for Karatsuba purposes) | |
71 | #define HashKey_2_k 16*5 // store XOR of High 64 bits and Low 64 | |
72 | // bits of HashKey^2 <<1 mod poly here | |
73 | // (for Karatsuba purposes) | |
74 | #define HashKey_3_k 16*6 // store XOR of High 64 bits and Low 64 | |
75 | // bits of HashKey^3 <<1 mod poly here | |
76 | // (for Karatsuba purposes) | |
77 | #define HashKey_4_k 16*7 // store XOR of High 64 bits and Low 64 | |
78 | // bits of HashKey^4 <<1 mod poly here | |
79 | // (for Karatsuba purposes) | |
80 | #define VARIABLE_OFFSET 16*8 | |
81 | ||
82 | #define arg1 rdi | |
83 | #define arg2 rsi | |
84 | #define arg3 rdx | |
85 | #define arg4 rcx | |
86 | #define arg5 r8 | |
87 | #define arg6 r9 | |
88 | #define arg7 STACK_OFFSET+8(%r14) | |
89 | #define arg8 STACK_OFFSET+16(%r14) | |
90 | #define arg9 STACK_OFFSET+24(%r14) | |
91 | #define arg10 STACK_OFFSET+32(%r14) | |
559ad0ff | 92 | #endif |
0bd82f5f TS |
93 | |
94 | ||
54b6a1bd HY |
95 | #define STATE1 %xmm0 |
96 | #define STATE2 %xmm4 | |
97 | #define STATE3 %xmm5 | |
98 | #define STATE4 %xmm6 | |
99 | #define STATE STATE1 | |
100 | #define IN1 %xmm1 | |
101 | #define IN2 %xmm7 | |
102 | #define IN3 %xmm8 | |
103 | #define IN4 %xmm9 | |
104 | #define IN IN1 | |
105 | #define KEY %xmm2 | |
106 | #define IV %xmm3 | |
0d258efb | 107 | |
12387a46 HY |
108 | #define BSWAP_MASK %xmm10 |
109 | #define CTR %xmm11 | |
110 | #define INC %xmm12 | |
54b6a1bd | 111 | |
c456a9cd JK |
112 | #define GF128MUL_MASK %xmm10 |
113 | ||
0d258efb MK |
114 | #ifdef __x86_64__ |
115 | #define AREG %rax | |
54b6a1bd HY |
116 | #define KEYP %rdi |
117 | #define OUTP %rsi | |
0d258efb | 118 | #define UKEYP OUTP |
54b6a1bd HY |
119 | #define INP %rdx |
120 | #define LEN %rcx | |
121 | #define IVP %r8 | |
122 | #define KLEN %r9d | |
123 | #define T1 %r10 | |
124 | #define TKEYP T1 | |
125 | #define T2 %r11 | |
12387a46 | 126 | #define TCTR_LOW T2 |
0d258efb MK |
127 | #else |
128 | #define AREG %eax | |
129 | #define KEYP %edi | |
130 | #define OUTP AREG | |
131 | #define UKEYP OUTP | |
132 | #define INP %edx | |
133 | #define LEN %esi | |
134 | #define IVP %ebp | |
135 | #define KLEN %ebx | |
136 | #define T1 %ecx | |
137 | #define TKEYP T1 | |
138 | #endif | |
54b6a1bd | 139 | |
0bd82f5f | 140 | |
559ad0ff | 141 | #ifdef __x86_64__ |
0bd82f5f TS |
142 | /* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0) |
143 | * | |
144 | * | |
145 | * Input: A and B (128-bits each, bit-reflected) | |
146 | * Output: C = A*B*x mod poly, (i.e. >>1 ) | |
147 | * To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input | |
148 | * GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly. | |
149 | * | |
150 | */ | |
151 | .macro GHASH_MUL GH HK TMP1 TMP2 TMP3 TMP4 TMP5 | |
152 | movdqa \GH, \TMP1 | |
153 | pshufd $78, \GH, \TMP2 | |
154 | pshufd $78, \HK, \TMP3 | |
155 | pxor \GH, \TMP2 # TMP2 = a1+a0 | |
156 | pxor \HK, \TMP3 # TMP3 = b1+b0 | |
157 | PCLMULQDQ 0x11, \HK, \TMP1 # TMP1 = a1*b1 | |
158 | PCLMULQDQ 0x00, \HK, \GH # GH = a0*b0 | |
159 | PCLMULQDQ 0x00, \TMP3, \TMP2 # TMP2 = (a0+a1)*(b1+b0) | |
160 | pxor \GH, \TMP2 | |
161 | pxor \TMP1, \TMP2 # TMP2 = (a0*b0)+(a1*b0) | |
162 | movdqa \TMP2, \TMP3 | |
163 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
164 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
165 | pxor \TMP3, \GH | |
166 | pxor \TMP2, \TMP1 # TMP2:GH holds the result of GH*HK | |
167 | ||
168 | # first phase of the reduction | |
169 | ||
170 | movdqa \GH, \TMP2 | |
171 | movdqa \GH, \TMP3 | |
172 | movdqa \GH, \TMP4 # copy GH into TMP2,TMP3 and TMP4 | |
173 | # in in order to perform | |
174 | # independent shifts | |
175 | pslld $31, \TMP2 # packed right shift <<31 | |
176 | pslld $30, \TMP3 # packed right shift <<30 | |
177 | pslld $25, \TMP4 # packed right shift <<25 | |
178 | pxor \TMP3, \TMP2 # xor the shifted versions | |
179 | pxor \TMP4, \TMP2 | |
180 | movdqa \TMP2, \TMP5 | |
181 | psrldq $4, \TMP5 # right shift TMP5 1 DW | |
182 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
183 | pxor \TMP2, \GH | |
184 | ||
185 | # second phase of the reduction | |
186 | ||
187 | movdqa \GH,\TMP2 # copy GH into TMP2,TMP3 and TMP4 | |
188 | # in in order to perform | |
189 | # independent shifts | |
190 | movdqa \GH,\TMP3 | |
191 | movdqa \GH,\TMP4 | |
192 | psrld $1,\TMP2 # packed left shift >>1 | |
193 | psrld $2,\TMP3 # packed left shift >>2 | |
194 | psrld $7,\TMP4 # packed left shift >>7 | |
195 | pxor \TMP3,\TMP2 # xor the shifted versions | |
196 | pxor \TMP4,\TMP2 | |
197 | pxor \TMP5, \TMP2 | |
198 | pxor \TMP2, \GH | |
199 | pxor \TMP1, \GH # result is in TMP1 | |
200 | .endm | |
201 | ||
202 | /* | |
203 | * if a = number of total plaintext bytes | |
204 | * b = floor(a/16) | |
205 | * num_initial_blocks = b mod 4 | |
206 | * encrypt the initial num_initial_blocks blocks and apply ghash on | |
207 | * the ciphertext | |
208 | * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers | |
209 | * are clobbered | |
210 | * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified | |
211 | */ | |
212 | ||
0bd82f5f | 213 | |
3c097b80 TS |
214 | .macro INITIAL_BLOCKS_DEC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \ |
215 | XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation | |
0bd82f5f TS |
216 | mov arg7, %r10 # %r10 = AAD |
217 | mov arg8, %r12 # %r12 = aadLen | |
218 | mov %r12, %r11 | |
219 | pxor %xmm\i, %xmm\i | |
220 | _get_AAD_loop\num_initial_blocks\operation: | |
221 | movd (%r10), \TMP1 | |
222 | pslldq $12, \TMP1 | |
223 | psrldq $4, %xmm\i | |
224 | pxor \TMP1, %xmm\i | |
225 | add $4, %r10 | |
226 | sub $4, %r12 | |
227 | jne _get_AAD_loop\num_initial_blocks\operation | |
228 | cmp $16, %r11 | |
229 | je _get_AAD_loop2_done\num_initial_blocks\operation | |
230 | mov $16, %r12 | |
231 | _get_AAD_loop2\num_initial_blocks\operation: | |
232 | psrldq $4, %xmm\i | |
233 | sub $4, %r12 | |
234 | cmp %r11, %r12 | |
235 | jne _get_AAD_loop2\num_initial_blocks\operation | |
236 | _get_AAD_loop2_done\num_initial_blocks\operation: | |
3c097b80 TS |
237 | movdqa SHUF_MASK(%rip), %xmm14 |
238 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data | |
239 | ||
0bd82f5f TS |
240 | xor %r11, %r11 # initialise the data pointer offset as zero |
241 | ||
242 | # start AES for num_initial_blocks blocks | |
243 | ||
244 | mov %arg5, %rax # %rax = *Y0 | |
245 | movdqu (%rax), \XMM0 # XMM0 = Y0 | |
3c097b80 TS |
246 | movdqa SHUF_MASK(%rip), %xmm14 |
247 | PSHUFB_XMM %xmm14, \XMM0 | |
248 | ||
249 | .if (\i == 5) || (\i == 6) || (\i == 7) | |
0bd82f5f TS |
250 | .irpc index, \i_seq |
251 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
252 | movdqa \XMM0, %xmm\index | |
3c097b80 TS |
253 | movdqa SHUF_MASK(%rip), %xmm14 |
254 | PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap | |
255 | ||
0bd82f5f TS |
256 | .endr |
257 | .irpc index, \i_seq | |
258 | pxor 16*0(%arg1), %xmm\index | |
259 | .endr | |
260 | .irpc index, \i_seq | |
261 | movaps 0x10(%rdi), \TMP1 | |
262 | AESENC \TMP1, %xmm\index # Round 1 | |
263 | .endr | |
264 | .irpc index, \i_seq | |
265 | movaps 0x20(%arg1), \TMP1 | |
266 | AESENC \TMP1, %xmm\index # Round 2 | |
267 | .endr | |
268 | .irpc index, \i_seq | |
269 | movaps 0x30(%arg1), \TMP1 | |
270 | AESENC \TMP1, %xmm\index # Round 2 | |
271 | .endr | |
272 | .irpc index, \i_seq | |
273 | movaps 0x40(%arg1), \TMP1 | |
274 | AESENC \TMP1, %xmm\index # Round 2 | |
275 | .endr | |
276 | .irpc index, \i_seq | |
277 | movaps 0x50(%arg1), \TMP1 | |
278 | AESENC \TMP1, %xmm\index # Round 2 | |
279 | .endr | |
280 | .irpc index, \i_seq | |
281 | movaps 0x60(%arg1), \TMP1 | |
282 | AESENC \TMP1, %xmm\index # Round 2 | |
283 | .endr | |
284 | .irpc index, \i_seq | |
285 | movaps 0x70(%arg1), \TMP1 | |
286 | AESENC \TMP1, %xmm\index # Round 2 | |
287 | .endr | |
288 | .irpc index, \i_seq | |
289 | movaps 0x80(%arg1), \TMP1 | |
290 | AESENC \TMP1, %xmm\index # Round 2 | |
291 | .endr | |
292 | .irpc index, \i_seq | |
293 | movaps 0x90(%arg1), \TMP1 | |
294 | AESENC \TMP1, %xmm\index # Round 2 | |
295 | .endr | |
296 | .irpc index, \i_seq | |
297 | movaps 0xa0(%arg1), \TMP1 | |
298 | AESENCLAST \TMP1, %xmm\index # Round 10 | |
299 | .endr | |
300 | .irpc index, \i_seq | |
301 | movdqu (%arg3 , %r11, 1), \TMP1 | |
302 | pxor \TMP1, %xmm\index | |
303 | movdqu %xmm\index, (%arg2 , %r11, 1) | |
304 | # write back plaintext/ciphertext for num_initial_blocks | |
305 | add $16, %r11 | |
3c097b80 | 306 | |
0bd82f5f | 307 | movdqa \TMP1, %xmm\index |
3c097b80 TS |
308 | movdqa SHUF_MASK(%rip), %xmm14 |
309 | PSHUFB_XMM %xmm14, %xmm\index | |
310 | ||
0bd82f5f TS |
311 | # prepare plaintext/ciphertext for GHASH computation |
312 | .endr | |
313 | .endif | |
314 | GHASH_MUL %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
315 | # apply GHASH on num_initial_blocks blocks | |
316 | ||
317 | .if \i == 5 | |
318 | pxor %xmm5, %xmm6 | |
319 | GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
320 | pxor %xmm6, %xmm7 | |
321 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
322 | pxor %xmm7, %xmm8 | |
323 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
324 | .elseif \i == 6 | |
325 | pxor %xmm6, %xmm7 | |
326 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
327 | pxor %xmm7, %xmm8 | |
328 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
329 | .elseif \i == 7 | |
330 | pxor %xmm7, %xmm8 | |
331 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
332 | .endif | |
333 | cmp $64, %r13 | |
334 | jl _initial_blocks_done\num_initial_blocks\operation | |
335 | # no need for precomputed values | |
336 | /* | |
337 | * | |
338 | * Precomputations for HashKey parallel with encryption of first 4 blocks. | |
339 | * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i | |
340 | */ | |
341 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
342 | movdqa \XMM0, \XMM1 | |
3c097b80 TS |
343 | movdqa SHUF_MASK(%rip), %xmm14 |
344 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap | |
345 | ||
0bd82f5f TS |
346 | paddd ONE(%rip), \XMM0 # INCR Y0 |
347 | movdqa \XMM0, \XMM2 | |
3c097b80 TS |
348 | movdqa SHUF_MASK(%rip), %xmm14 |
349 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap | |
350 | ||
0bd82f5f TS |
351 | paddd ONE(%rip), \XMM0 # INCR Y0 |
352 | movdqa \XMM0, \XMM3 | |
3c097b80 TS |
353 | movdqa SHUF_MASK(%rip), %xmm14 |
354 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap | |
355 | ||
0bd82f5f TS |
356 | paddd ONE(%rip), \XMM0 # INCR Y0 |
357 | movdqa \XMM0, \XMM4 | |
3c097b80 TS |
358 | movdqa SHUF_MASK(%rip), %xmm14 |
359 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap | |
360 | ||
0bd82f5f TS |
361 | pxor 16*0(%arg1), \XMM1 |
362 | pxor 16*0(%arg1), \XMM2 | |
363 | pxor 16*0(%arg1), \XMM3 | |
364 | pxor 16*0(%arg1), \XMM4 | |
365 | movdqa \TMP3, \TMP5 | |
366 | pshufd $78, \TMP3, \TMP1 | |
367 | pxor \TMP3, \TMP1 | |
368 | movdqa \TMP1, HashKey_k(%rsp) | |
369 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
370 | # TMP5 = HashKey^2<<1 (mod poly) | |
371 | movdqa \TMP5, HashKey_2(%rsp) | |
372 | # HashKey_2 = HashKey^2<<1 (mod poly) | |
373 | pshufd $78, \TMP5, \TMP1 | |
374 | pxor \TMP5, \TMP1 | |
375 | movdqa \TMP1, HashKey_2_k(%rsp) | |
376 | .irpc index, 1234 # do 4 rounds | |
377 | movaps 0x10*\index(%arg1), \TMP1 | |
378 | AESENC \TMP1, \XMM1 | |
379 | AESENC \TMP1, \XMM2 | |
380 | AESENC \TMP1, \XMM3 | |
381 | AESENC \TMP1, \XMM4 | |
382 | .endr | |
383 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
384 | # TMP5 = HashKey^3<<1 (mod poly) | |
385 | movdqa \TMP5, HashKey_3(%rsp) | |
386 | pshufd $78, \TMP5, \TMP1 | |
387 | pxor \TMP5, \TMP1 | |
388 | movdqa \TMP1, HashKey_3_k(%rsp) | |
389 | .irpc index, 56789 # do next 5 rounds | |
390 | movaps 0x10*\index(%arg1), \TMP1 | |
391 | AESENC \TMP1, \XMM1 | |
392 | AESENC \TMP1, \XMM2 | |
393 | AESENC \TMP1, \XMM3 | |
394 | AESENC \TMP1, \XMM4 | |
395 | .endr | |
396 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
397 | # TMP5 = HashKey^3<<1 (mod poly) | |
398 | movdqa \TMP5, HashKey_4(%rsp) | |
399 | pshufd $78, \TMP5, \TMP1 | |
400 | pxor \TMP5, \TMP1 | |
401 | movdqa \TMP1, HashKey_4_k(%rsp) | |
402 | movaps 0xa0(%arg1), \TMP2 | |
403 | AESENCLAST \TMP2, \XMM1 | |
404 | AESENCLAST \TMP2, \XMM2 | |
405 | AESENCLAST \TMP2, \XMM3 | |
406 | AESENCLAST \TMP2, \XMM4 | |
407 | movdqu 16*0(%arg3 , %r11 , 1), \TMP1 | |
408 | pxor \TMP1, \XMM1 | |
0bd82f5f TS |
409 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) |
410 | movdqa \TMP1, \XMM1 | |
0bd82f5f TS |
411 | movdqu 16*1(%arg3 , %r11 , 1), \TMP1 |
412 | pxor \TMP1, \XMM2 | |
0bd82f5f TS |
413 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) |
414 | movdqa \TMP1, \XMM2 | |
0bd82f5f TS |
415 | movdqu 16*2(%arg3 , %r11 , 1), \TMP1 |
416 | pxor \TMP1, \XMM3 | |
0bd82f5f TS |
417 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) |
418 | movdqa \TMP1, \XMM3 | |
0bd82f5f TS |
419 | movdqu 16*3(%arg3 , %r11 , 1), \TMP1 |
420 | pxor \TMP1, \XMM4 | |
0bd82f5f TS |
421 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) |
422 | movdqa \TMP1, \XMM4 | |
3c097b80 TS |
423 | add $64, %r11 |
424 | movdqa SHUF_MASK(%rip), %xmm14 | |
425 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap | |
426 | pxor \XMMDst, \XMM1 | |
427 | # combine GHASHed value with the corresponding ciphertext | |
428 | movdqa SHUF_MASK(%rip), %xmm14 | |
429 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap | |
430 | movdqa SHUF_MASK(%rip), %xmm14 | |
431 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap | |
432 | movdqa SHUF_MASK(%rip), %xmm14 | |
433 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap | |
434 | ||
435 | _initial_blocks_done\num_initial_blocks\operation: | |
436 | ||
437 | .endm | |
438 | ||
439 | ||
440 | /* | |
441 | * if a = number of total plaintext bytes | |
442 | * b = floor(a/16) | |
443 | * num_initial_blocks = b mod 4 | |
444 | * encrypt the initial num_initial_blocks blocks and apply ghash on | |
445 | * the ciphertext | |
446 | * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers | |
447 | * are clobbered | |
448 | * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified | |
449 | */ | |
450 | ||
451 | ||
452 | .macro INITIAL_BLOCKS_ENC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \ | |
453 | XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation | |
454 | mov arg7, %r10 # %r10 = AAD | |
455 | mov arg8, %r12 # %r12 = aadLen | |
456 | mov %r12, %r11 | |
457 | pxor %xmm\i, %xmm\i | |
458 | _get_AAD_loop\num_initial_blocks\operation: | |
459 | movd (%r10), \TMP1 | |
460 | pslldq $12, \TMP1 | |
461 | psrldq $4, %xmm\i | |
462 | pxor \TMP1, %xmm\i | |
463 | add $4, %r10 | |
464 | sub $4, %r12 | |
465 | jne _get_AAD_loop\num_initial_blocks\operation | |
466 | cmp $16, %r11 | |
467 | je _get_AAD_loop2_done\num_initial_blocks\operation | |
468 | mov $16, %r12 | |
469 | _get_AAD_loop2\num_initial_blocks\operation: | |
470 | psrldq $4, %xmm\i | |
471 | sub $4, %r12 | |
472 | cmp %r11, %r12 | |
473 | jne _get_AAD_loop2\num_initial_blocks\operation | |
474 | _get_AAD_loop2_done\num_initial_blocks\operation: | |
475 | movdqa SHUF_MASK(%rip), %xmm14 | |
476 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data | |
477 | ||
478 | xor %r11, %r11 # initialise the data pointer offset as zero | |
479 | ||
480 | # start AES for num_initial_blocks blocks | |
481 | ||
482 | mov %arg5, %rax # %rax = *Y0 | |
483 | movdqu (%rax), \XMM0 # XMM0 = Y0 | |
484 | movdqa SHUF_MASK(%rip), %xmm14 | |
485 | PSHUFB_XMM %xmm14, \XMM0 | |
486 | ||
487 | .if (\i == 5) || (\i == 6) || (\i == 7) | |
488 | .irpc index, \i_seq | |
489 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
490 | movdqa \XMM0, %xmm\index | |
491 | movdqa SHUF_MASK(%rip), %xmm14 | |
492 | PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap | |
493 | ||
494 | .endr | |
495 | .irpc index, \i_seq | |
496 | pxor 16*0(%arg1), %xmm\index | |
497 | .endr | |
498 | .irpc index, \i_seq | |
499 | movaps 0x10(%rdi), \TMP1 | |
500 | AESENC \TMP1, %xmm\index # Round 1 | |
501 | .endr | |
502 | .irpc index, \i_seq | |
503 | movaps 0x20(%arg1), \TMP1 | |
504 | AESENC \TMP1, %xmm\index # Round 2 | |
505 | .endr | |
506 | .irpc index, \i_seq | |
507 | movaps 0x30(%arg1), \TMP1 | |
508 | AESENC \TMP1, %xmm\index # Round 2 | |
509 | .endr | |
510 | .irpc index, \i_seq | |
511 | movaps 0x40(%arg1), \TMP1 | |
512 | AESENC \TMP1, %xmm\index # Round 2 | |
513 | .endr | |
514 | .irpc index, \i_seq | |
515 | movaps 0x50(%arg1), \TMP1 | |
516 | AESENC \TMP1, %xmm\index # Round 2 | |
517 | .endr | |
518 | .irpc index, \i_seq | |
519 | movaps 0x60(%arg1), \TMP1 | |
520 | AESENC \TMP1, %xmm\index # Round 2 | |
521 | .endr | |
522 | .irpc index, \i_seq | |
523 | movaps 0x70(%arg1), \TMP1 | |
524 | AESENC \TMP1, %xmm\index # Round 2 | |
525 | .endr | |
526 | .irpc index, \i_seq | |
527 | movaps 0x80(%arg1), \TMP1 | |
528 | AESENC \TMP1, %xmm\index # Round 2 | |
529 | .endr | |
530 | .irpc index, \i_seq | |
531 | movaps 0x90(%arg1), \TMP1 | |
532 | AESENC \TMP1, %xmm\index # Round 2 | |
533 | .endr | |
534 | .irpc index, \i_seq | |
535 | movaps 0xa0(%arg1), \TMP1 | |
536 | AESENCLAST \TMP1, %xmm\index # Round 10 | |
537 | .endr | |
538 | .irpc index, \i_seq | |
539 | movdqu (%arg3 , %r11, 1), \TMP1 | |
540 | pxor \TMP1, %xmm\index | |
541 | movdqu %xmm\index, (%arg2 , %r11, 1) | |
542 | # write back plaintext/ciphertext for num_initial_blocks | |
543 | add $16, %r11 | |
544 | ||
545 | movdqa SHUF_MASK(%rip), %xmm14 | |
546 | PSHUFB_XMM %xmm14, %xmm\index | |
547 | ||
548 | # prepare plaintext/ciphertext for GHASH computation | |
549 | .endr | |
550 | .endif | |
551 | GHASH_MUL %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
552 | # apply GHASH on num_initial_blocks blocks | |
553 | ||
554 | .if \i == 5 | |
555 | pxor %xmm5, %xmm6 | |
556 | GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
557 | pxor %xmm6, %xmm7 | |
558 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
559 | pxor %xmm7, %xmm8 | |
560 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
561 | .elseif \i == 6 | |
562 | pxor %xmm6, %xmm7 | |
563 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
564 | pxor %xmm7, %xmm8 | |
565 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
566 | .elseif \i == 7 | |
567 | pxor %xmm7, %xmm8 | |
568 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
569 | .endif | |
570 | cmp $64, %r13 | |
571 | jl _initial_blocks_done\num_initial_blocks\operation | |
572 | # no need for precomputed values | |
573 | /* | |
574 | * | |
575 | * Precomputations for HashKey parallel with encryption of first 4 blocks. | |
576 | * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i | |
577 | */ | |
578 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
579 | movdqa \XMM0, \XMM1 | |
580 | movdqa SHUF_MASK(%rip), %xmm14 | |
581 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap | |
582 | ||
583 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
584 | movdqa \XMM0, \XMM2 | |
585 | movdqa SHUF_MASK(%rip), %xmm14 | |
586 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap | |
587 | ||
588 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
589 | movdqa \XMM0, \XMM3 | |
590 | movdqa SHUF_MASK(%rip), %xmm14 | |
591 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap | |
592 | ||
593 | paddd ONE(%rip), \XMM0 # INCR Y0 | |
594 | movdqa \XMM0, \XMM4 | |
595 | movdqa SHUF_MASK(%rip), %xmm14 | |
596 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap | |
597 | ||
598 | pxor 16*0(%arg1), \XMM1 | |
599 | pxor 16*0(%arg1), \XMM2 | |
600 | pxor 16*0(%arg1), \XMM3 | |
601 | pxor 16*0(%arg1), \XMM4 | |
602 | movdqa \TMP3, \TMP5 | |
603 | pshufd $78, \TMP3, \TMP1 | |
604 | pxor \TMP3, \TMP1 | |
605 | movdqa \TMP1, HashKey_k(%rsp) | |
606 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
607 | # TMP5 = HashKey^2<<1 (mod poly) | |
608 | movdqa \TMP5, HashKey_2(%rsp) | |
609 | # HashKey_2 = HashKey^2<<1 (mod poly) | |
610 | pshufd $78, \TMP5, \TMP1 | |
611 | pxor \TMP5, \TMP1 | |
612 | movdqa \TMP1, HashKey_2_k(%rsp) | |
613 | .irpc index, 1234 # do 4 rounds | |
614 | movaps 0x10*\index(%arg1), \TMP1 | |
615 | AESENC \TMP1, \XMM1 | |
616 | AESENC \TMP1, \XMM2 | |
617 | AESENC \TMP1, \XMM3 | |
618 | AESENC \TMP1, \XMM4 | |
619 | .endr | |
620 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
621 | # TMP5 = HashKey^3<<1 (mod poly) | |
622 | movdqa \TMP5, HashKey_3(%rsp) | |
623 | pshufd $78, \TMP5, \TMP1 | |
624 | pxor \TMP5, \TMP1 | |
625 | movdqa \TMP1, HashKey_3_k(%rsp) | |
626 | .irpc index, 56789 # do next 5 rounds | |
627 | movaps 0x10*\index(%arg1), \TMP1 | |
628 | AESENC \TMP1, \XMM1 | |
629 | AESENC \TMP1, \XMM2 | |
630 | AESENC \TMP1, \XMM3 | |
631 | AESENC \TMP1, \XMM4 | |
632 | .endr | |
633 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
634 | # TMP5 = HashKey^3<<1 (mod poly) | |
635 | movdqa \TMP5, HashKey_4(%rsp) | |
636 | pshufd $78, \TMP5, \TMP1 | |
637 | pxor \TMP5, \TMP1 | |
638 | movdqa \TMP1, HashKey_4_k(%rsp) | |
639 | movaps 0xa0(%arg1), \TMP2 | |
640 | AESENCLAST \TMP2, \XMM1 | |
641 | AESENCLAST \TMP2, \XMM2 | |
642 | AESENCLAST \TMP2, \XMM3 | |
643 | AESENCLAST \TMP2, \XMM4 | |
644 | movdqu 16*0(%arg3 , %r11 , 1), \TMP1 | |
645 | pxor \TMP1, \XMM1 | |
646 | movdqu 16*1(%arg3 , %r11 , 1), \TMP1 | |
647 | pxor \TMP1, \XMM2 | |
648 | movdqu 16*2(%arg3 , %r11 , 1), \TMP1 | |
649 | pxor \TMP1, \XMM3 | |
650 | movdqu 16*3(%arg3 , %r11 , 1), \TMP1 | |
651 | pxor \TMP1, \XMM4 | |
0bd82f5f TS |
652 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) |
653 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) | |
654 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) | |
655 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) | |
3c097b80 | 656 | |
0bd82f5f | 657 | add $64, %r11 |
3c097b80 TS |
658 | movdqa SHUF_MASK(%rip), %xmm14 |
659 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap | |
0bd82f5f TS |
660 | pxor \XMMDst, \XMM1 |
661 | # combine GHASHed value with the corresponding ciphertext | |
3c097b80 TS |
662 | movdqa SHUF_MASK(%rip), %xmm14 |
663 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap | |
664 | movdqa SHUF_MASK(%rip), %xmm14 | |
665 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap | |
666 | movdqa SHUF_MASK(%rip), %xmm14 | |
667 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap | |
668 | ||
0bd82f5f | 669 | _initial_blocks_done\num_initial_blocks\operation: |
3c097b80 | 670 | |
0bd82f5f TS |
671 | .endm |
672 | ||
673 | /* | |
674 | * encrypt 4 blocks at a time | |
675 | * ghash the 4 previously encrypted ciphertext blocks | |
676 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
677 | * %r11 is the data offset value | |
678 | */ | |
3c097b80 TS |
679 | .macro GHASH_4_ENCRYPT_4_PARALLEL_ENC TMP1 TMP2 TMP3 TMP4 TMP5 \ |
680 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation | |
681 | ||
682 | movdqa \XMM1, \XMM5 | |
683 | movdqa \XMM2, \XMM6 | |
684 | movdqa \XMM3, \XMM7 | |
685 | movdqa \XMM4, \XMM8 | |
686 | ||
687 | movdqa SHUF_MASK(%rip), %xmm15 | |
688 | # multiply TMP5 * HashKey using karatsuba | |
689 | ||
690 | movdqa \XMM5, \TMP4 | |
691 | pshufd $78, \XMM5, \TMP6 | |
692 | pxor \XMM5, \TMP6 | |
693 | paddd ONE(%rip), \XMM0 # INCR CNT | |
694 | movdqa HashKey_4(%rsp), \TMP5 | |
695 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
696 | movdqa \XMM0, \XMM1 | |
697 | paddd ONE(%rip), \XMM0 # INCR CNT | |
698 | movdqa \XMM0, \XMM2 | |
699 | paddd ONE(%rip), \XMM0 # INCR CNT | |
700 | movdqa \XMM0, \XMM3 | |
701 | paddd ONE(%rip), \XMM0 # INCR CNT | |
702 | movdqa \XMM0, \XMM4 | |
703 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
704 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 | |
705 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
706 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
707 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
708 | ||
709 | pxor (%arg1), \XMM1 | |
710 | pxor (%arg1), \XMM2 | |
711 | pxor (%arg1), \XMM3 | |
712 | pxor (%arg1), \XMM4 | |
713 | movdqa HashKey_4_k(%rsp), \TMP5 | |
714 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
715 | movaps 0x10(%arg1), \TMP1 | |
716 | AESENC \TMP1, \XMM1 # Round 1 | |
717 | AESENC \TMP1, \XMM2 | |
718 | AESENC \TMP1, \XMM3 | |
719 | AESENC \TMP1, \XMM4 | |
720 | movaps 0x20(%arg1), \TMP1 | |
721 | AESENC \TMP1, \XMM1 # Round 2 | |
722 | AESENC \TMP1, \XMM2 | |
723 | AESENC \TMP1, \XMM3 | |
724 | AESENC \TMP1, \XMM4 | |
725 | movdqa \XMM6, \TMP1 | |
726 | pshufd $78, \XMM6, \TMP2 | |
727 | pxor \XMM6, \TMP2 | |
728 | movdqa HashKey_3(%rsp), \TMP5 | |
729 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
730 | movaps 0x30(%arg1), \TMP3 | |
731 | AESENC \TMP3, \XMM1 # Round 3 | |
732 | AESENC \TMP3, \XMM2 | |
733 | AESENC \TMP3, \XMM3 | |
734 | AESENC \TMP3, \XMM4 | |
735 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
736 | movaps 0x40(%arg1), \TMP3 | |
737 | AESENC \TMP3, \XMM1 # Round 4 | |
738 | AESENC \TMP3, \XMM2 | |
739 | AESENC \TMP3, \XMM3 | |
740 | AESENC \TMP3, \XMM4 | |
741 | movdqa HashKey_3_k(%rsp), \TMP5 | |
742 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
743 | movaps 0x50(%arg1), \TMP3 | |
744 | AESENC \TMP3, \XMM1 # Round 5 | |
745 | AESENC \TMP3, \XMM2 | |
746 | AESENC \TMP3, \XMM3 | |
747 | AESENC \TMP3, \XMM4 | |
748 | pxor \TMP1, \TMP4 | |
749 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
750 | pxor \XMM6, \XMM5 | |
751 | pxor \TMP2, \TMP6 | |
752 | movdqa \XMM7, \TMP1 | |
753 | pshufd $78, \XMM7, \TMP2 | |
754 | pxor \XMM7, \TMP2 | |
755 | movdqa HashKey_2(%rsp ), \TMP5 | |
756 | ||
757 | # Multiply TMP5 * HashKey using karatsuba | |
758 | ||
759 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
760 | movaps 0x60(%arg1), \TMP3 | |
761 | AESENC \TMP3, \XMM1 # Round 6 | |
762 | AESENC \TMP3, \XMM2 | |
763 | AESENC \TMP3, \XMM3 | |
764 | AESENC \TMP3, \XMM4 | |
765 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
766 | movaps 0x70(%arg1), \TMP3 | |
767 | AESENC \TMP3, \XMM1 # Round 7 | |
768 | AESENC \TMP3, \XMM2 | |
769 | AESENC \TMP3, \XMM3 | |
770 | AESENC \TMP3, \XMM4 | |
771 | movdqa HashKey_2_k(%rsp), \TMP5 | |
772 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
773 | movaps 0x80(%arg1), \TMP3 | |
774 | AESENC \TMP3, \XMM1 # Round 8 | |
775 | AESENC \TMP3, \XMM2 | |
776 | AESENC \TMP3, \XMM3 | |
777 | AESENC \TMP3, \XMM4 | |
778 | pxor \TMP1, \TMP4 | |
779 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
780 | pxor \XMM7, \XMM5 | |
781 | pxor \TMP2, \TMP6 | |
782 | ||
783 | # Multiply XMM8 * HashKey | |
784 | # XMM8 and TMP5 hold the values for the two operands | |
785 | ||
786 | movdqa \XMM8, \TMP1 | |
787 | pshufd $78, \XMM8, \TMP2 | |
788 | pxor \XMM8, \TMP2 | |
789 | movdqa HashKey(%rsp), \TMP5 | |
790 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
791 | movaps 0x90(%arg1), \TMP3 | |
792 | AESENC \TMP3, \XMM1 # Round 9 | |
793 | AESENC \TMP3, \XMM2 | |
794 | AESENC \TMP3, \XMM3 | |
795 | AESENC \TMP3, \XMM4 | |
796 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
797 | movaps 0xa0(%arg1), \TMP3 | |
798 | AESENCLAST \TMP3, \XMM1 # Round 10 | |
799 | AESENCLAST \TMP3, \XMM2 | |
800 | AESENCLAST \TMP3, \XMM3 | |
801 | AESENCLAST \TMP3, \XMM4 | |
802 | movdqa HashKey_k(%rsp), \TMP5 | |
803 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
804 | movdqu (%arg3,%r11,1), \TMP3 | |
805 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
806 | movdqu 16(%arg3,%r11,1), \TMP3 | |
807 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
808 | movdqu 32(%arg3,%r11,1), \TMP3 | |
809 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
810 | movdqu 48(%arg3,%r11,1), \TMP3 | |
811 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
812 | movdqu \XMM1, (%arg2,%r11,1) # Write to the ciphertext buffer | |
813 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to the ciphertext buffer | |
814 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to the ciphertext buffer | |
815 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to the ciphertext buffer | |
816 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
817 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
818 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
819 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
820 | ||
821 | pxor \TMP4, \TMP1 | |
822 | pxor \XMM8, \XMM5 | |
823 | pxor \TMP6, \TMP2 | |
824 | pxor \TMP1, \TMP2 | |
825 | pxor \XMM5, \TMP2 | |
826 | movdqa \TMP2, \TMP3 | |
827 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
828 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
829 | pxor \TMP3, \XMM5 | |
830 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
831 | ||
832 | # first phase of reduction | |
833 | ||
834 | movdqa \XMM5, \TMP2 | |
835 | movdqa \XMM5, \TMP3 | |
836 | movdqa \XMM5, \TMP4 | |
837 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
838 | pslld $31, \TMP2 # packed right shift << 31 | |
839 | pslld $30, \TMP3 # packed right shift << 30 | |
840 | pslld $25, \TMP4 # packed right shift << 25 | |
841 | pxor \TMP3, \TMP2 # xor the shifted versions | |
842 | pxor \TMP4, \TMP2 | |
843 | movdqa \TMP2, \TMP5 | |
844 | psrldq $4, \TMP5 # right shift T5 1 DW | |
845 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
846 | pxor \TMP2, \XMM5 | |
847 | ||
848 | # second phase of reduction | |
849 | ||
850 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
851 | movdqa \XMM5,\TMP3 | |
852 | movdqa \XMM5,\TMP4 | |
853 | psrld $1, \TMP2 # packed left shift >>1 | |
854 | psrld $2, \TMP3 # packed left shift >>2 | |
855 | psrld $7, \TMP4 # packed left shift >>7 | |
856 | pxor \TMP3,\TMP2 # xor the shifted versions | |
857 | pxor \TMP4,\TMP2 | |
858 | pxor \TMP5, \TMP2 | |
859 | pxor \TMP2, \XMM5 | |
860 | pxor \TMP1, \XMM5 # result is in TMP1 | |
861 | ||
862 | pxor \XMM5, \XMM1 | |
863 | .endm | |
864 | ||
865 | /* | |
866 | * decrypt 4 blocks at a time | |
867 | * ghash the 4 previously decrypted ciphertext blocks | |
868 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
869 | * %r11 is the data offset value | |
870 | */ | |
871 | .macro GHASH_4_ENCRYPT_4_PARALLEL_DEC TMP1 TMP2 TMP3 TMP4 TMP5 \ | |
0bd82f5f TS |
872 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation |
873 | ||
874 | movdqa \XMM1, \XMM5 | |
875 | movdqa \XMM2, \XMM6 | |
876 | movdqa \XMM3, \XMM7 | |
877 | movdqa \XMM4, \XMM8 | |
878 | ||
3c097b80 | 879 | movdqa SHUF_MASK(%rip), %xmm15 |
0bd82f5f TS |
880 | # multiply TMP5 * HashKey using karatsuba |
881 | ||
882 | movdqa \XMM5, \TMP4 | |
883 | pshufd $78, \XMM5, \TMP6 | |
884 | pxor \XMM5, \TMP6 | |
885 | paddd ONE(%rip), \XMM0 # INCR CNT | |
886 | movdqa HashKey_4(%rsp), \TMP5 | |
887 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
888 | movdqa \XMM0, \XMM1 | |
889 | paddd ONE(%rip), \XMM0 # INCR CNT | |
890 | movdqa \XMM0, \XMM2 | |
891 | paddd ONE(%rip), \XMM0 # INCR CNT | |
892 | movdqa \XMM0, \XMM3 | |
893 | paddd ONE(%rip), \XMM0 # INCR CNT | |
894 | movdqa \XMM0, \XMM4 | |
3c097b80 | 895 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
0bd82f5f | 896 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 |
3c097b80 TS |
897 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap |
898 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
899 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
900 | ||
0bd82f5f TS |
901 | pxor (%arg1), \XMM1 |
902 | pxor (%arg1), \XMM2 | |
903 | pxor (%arg1), \XMM3 | |
904 | pxor (%arg1), \XMM4 | |
905 | movdqa HashKey_4_k(%rsp), \TMP5 | |
906 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
907 | movaps 0x10(%arg1), \TMP1 | |
908 | AESENC \TMP1, \XMM1 # Round 1 | |
909 | AESENC \TMP1, \XMM2 | |
910 | AESENC \TMP1, \XMM3 | |
911 | AESENC \TMP1, \XMM4 | |
912 | movaps 0x20(%arg1), \TMP1 | |
913 | AESENC \TMP1, \XMM1 # Round 2 | |
914 | AESENC \TMP1, \XMM2 | |
915 | AESENC \TMP1, \XMM3 | |
916 | AESENC \TMP1, \XMM4 | |
917 | movdqa \XMM6, \TMP1 | |
918 | pshufd $78, \XMM6, \TMP2 | |
919 | pxor \XMM6, \TMP2 | |
920 | movdqa HashKey_3(%rsp), \TMP5 | |
921 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
922 | movaps 0x30(%arg1), \TMP3 | |
923 | AESENC \TMP3, \XMM1 # Round 3 | |
924 | AESENC \TMP3, \XMM2 | |
925 | AESENC \TMP3, \XMM3 | |
926 | AESENC \TMP3, \XMM4 | |
927 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
928 | movaps 0x40(%arg1), \TMP3 | |
929 | AESENC \TMP3, \XMM1 # Round 4 | |
930 | AESENC \TMP3, \XMM2 | |
931 | AESENC \TMP3, \XMM3 | |
932 | AESENC \TMP3, \XMM4 | |
933 | movdqa HashKey_3_k(%rsp), \TMP5 | |
934 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
935 | movaps 0x50(%arg1), \TMP3 | |
936 | AESENC \TMP3, \XMM1 # Round 5 | |
937 | AESENC \TMP3, \XMM2 | |
938 | AESENC \TMP3, \XMM3 | |
939 | AESENC \TMP3, \XMM4 | |
940 | pxor \TMP1, \TMP4 | |
941 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
942 | pxor \XMM6, \XMM5 | |
943 | pxor \TMP2, \TMP6 | |
944 | movdqa \XMM7, \TMP1 | |
945 | pshufd $78, \XMM7, \TMP2 | |
946 | pxor \XMM7, \TMP2 | |
947 | movdqa HashKey_2(%rsp ), \TMP5 | |
948 | ||
949 | # Multiply TMP5 * HashKey using karatsuba | |
950 | ||
951 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
952 | movaps 0x60(%arg1), \TMP3 | |
953 | AESENC \TMP3, \XMM1 # Round 6 | |
954 | AESENC \TMP3, \XMM2 | |
955 | AESENC \TMP3, \XMM3 | |
956 | AESENC \TMP3, \XMM4 | |
957 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
958 | movaps 0x70(%arg1), \TMP3 | |
959 | AESENC \TMP3, \XMM1 # Round 7 | |
960 | AESENC \TMP3, \XMM2 | |
961 | AESENC \TMP3, \XMM3 | |
962 | AESENC \TMP3, \XMM4 | |
963 | movdqa HashKey_2_k(%rsp), \TMP5 | |
964 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
965 | movaps 0x80(%arg1), \TMP3 | |
966 | AESENC \TMP3, \XMM1 # Round 8 | |
967 | AESENC \TMP3, \XMM2 | |
968 | AESENC \TMP3, \XMM3 | |
969 | AESENC \TMP3, \XMM4 | |
970 | pxor \TMP1, \TMP4 | |
971 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
972 | pxor \XMM7, \XMM5 | |
973 | pxor \TMP2, \TMP6 | |
974 | ||
975 | # Multiply XMM8 * HashKey | |
976 | # XMM8 and TMP5 hold the values for the two operands | |
977 | ||
978 | movdqa \XMM8, \TMP1 | |
979 | pshufd $78, \XMM8, \TMP2 | |
980 | pxor \XMM8, \TMP2 | |
981 | movdqa HashKey(%rsp), \TMP5 | |
982 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
983 | movaps 0x90(%arg1), \TMP3 | |
984 | AESENC \TMP3, \XMM1 # Round 9 | |
985 | AESENC \TMP3, \XMM2 | |
986 | AESENC \TMP3, \XMM3 | |
987 | AESENC \TMP3, \XMM4 | |
988 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
989 | movaps 0xa0(%arg1), \TMP3 | |
990 | AESENCLAST \TMP3, \XMM1 # Round 10 | |
991 | AESENCLAST \TMP3, \XMM2 | |
992 | AESENCLAST \TMP3, \XMM3 | |
993 | AESENCLAST \TMP3, \XMM4 | |
994 | movdqa HashKey_k(%rsp), \TMP5 | |
995 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
996 | movdqu (%arg3,%r11,1), \TMP3 | |
997 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
998 | movdqu \XMM1, (%arg2,%r11,1) # Write to plaintext buffer |
999 | movdqa \TMP3, \XMM1 | |
0bd82f5f TS |
1000 | movdqu 16(%arg3,%r11,1), \TMP3 |
1001 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1002 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to plaintext buffer |
1003 | movdqa \TMP3, \XMM2 | |
0bd82f5f TS |
1004 | movdqu 32(%arg3,%r11,1), \TMP3 |
1005 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1006 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to plaintext buffer |
1007 | movdqa \TMP3, \XMM3 | |
0bd82f5f TS |
1008 | movdqu 48(%arg3,%r11,1), \TMP3 |
1009 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1010 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to plaintext buffer |
1011 | movdqa \TMP3, \XMM4 | |
3c097b80 TS |
1012 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
1013 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
1014 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
1015 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
0bd82f5f TS |
1016 | |
1017 | pxor \TMP4, \TMP1 | |
1018 | pxor \XMM8, \XMM5 | |
1019 | pxor \TMP6, \TMP2 | |
1020 | pxor \TMP1, \TMP2 | |
1021 | pxor \XMM5, \TMP2 | |
1022 | movdqa \TMP2, \TMP3 | |
1023 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
1024 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
1025 | pxor \TMP3, \XMM5 | |
1026 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
1027 | ||
1028 | # first phase of reduction | |
1029 | ||
1030 | movdqa \XMM5, \TMP2 | |
1031 | movdqa \XMM5, \TMP3 | |
1032 | movdqa \XMM5, \TMP4 | |
1033 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
1034 | pslld $31, \TMP2 # packed right shift << 31 | |
1035 | pslld $30, \TMP3 # packed right shift << 30 | |
1036 | pslld $25, \TMP4 # packed right shift << 25 | |
1037 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1038 | pxor \TMP4, \TMP2 | |
1039 | movdqa \TMP2, \TMP5 | |
1040 | psrldq $4, \TMP5 # right shift T5 1 DW | |
1041 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
1042 | pxor \TMP2, \XMM5 | |
1043 | ||
1044 | # second phase of reduction | |
1045 | ||
1046 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
1047 | movdqa \XMM5,\TMP3 | |
1048 | movdqa \XMM5,\TMP4 | |
1049 | psrld $1, \TMP2 # packed left shift >>1 | |
1050 | psrld $2, \TMP3 # packed left shift >>2 | |
1051 | psrld $7, \TMP4 # packed left shift >>7 | |
1052 | pxor \TMP3,\TMP2 # xor the shifted versions | |
1053 | pxor \TMP4,\TMP2 | |
1054 | pxor \TMP5, \TMP2 | |
1055 | pxor \TMP2, \XMM5 | |
1056 | pxor \TMP1, \XMM5 # result is in TMP1 | |
1057 | ||
1058 | pxor \XMM5, \XMM1 | |
1059 | .endm | |
1060 | ||
1061 | /* GHASH the last 4 ciphertext blocks. */ | |
1062 | .macro GHASH_LAST_4 TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 \ | |
1063 | TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst | |
1064 | ||
1065 | # Multiply TMP6 * HashKey (using Karatsuba) | |
1066 | ||
1067 | movdqa \XMM1, \TMP6 | |
1068 | pshufd $78, \XMM1, \TMP2 | |
1069 | pxor \XMM1, \TMP2 | |
1070 | movdqa HashKey_4(%rsp), \TMP5 | |
1071 | PCLMULQDQ 0x11, \TMP5, \TMP6 # TMP6 = a1*b1 | |
1072 | PCLMULQDQ 0x00, \TMP5, \XMM1 # XMM1 = a0*b0 | |
1073 | movdqa HashKey_4_k(%rsp), \TMP4 | |
1074 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1075 | movdqa \XMM1, \XMMDst | |
1076 | movdqa \TMP2, \XMM1 # result in TMP6, XMMDst, XMM1 | |
1077 | ||
1078 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1079 | ||
1080 | movdqa \XMM2, \TMP1 | |
1081 | pshufd $78, \XMM2, \TMP2 | |
1082 | pxor \XMM2, \TMP2 | |
1083 | movdqa HashKey_3(%rsp), \TMP5 | |
1084 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1085 | PCLMULQDQ 0x00, \TMP5, \XMM2 # XMM2 = a0*b0 | |
1086 | movdqa HashKey_3_k(%rsp), \TMP4 | |
1087 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1088 | pxor \TMP1, \TMP6 | |
1089 | pxor \XMM2, \XMMDst | |
1090 | pxor \TMP2, \XMM1 | |
1091 | # results accumulated in TMP6, XMMDst, XMM1 | |
1092 | ||
1093 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1094 | ||
1095 | movdqa \XMM3, \TMP1 | |
1096 | pshufd $78, \XMM3, \TMP2 | |
1097 | pxor \XMM3, \TMP2 | |
1098 | movdqa HashKey_2(%rsp), \TMP5 | |
1099 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1100 | PCLMULQDQ 0x00, \TMP5, \XMM3 # XMM3 = a0*b0 | |
1101 | movdqa HashKey_2_k(%rsp), \TMP4 | |
1102 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1103 | pxor \TMP1, \TMP6 | |
1104 | pxor \XMM3, \XMMDst | |
1105 | pxor \TMP2, \XMM1 # results accumulated in TMP6, XMMDst, XMM1 | |
1106 | ||
1107 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1108 | movdqa \XMM4, \TMP1 | |
1109 | pshufd $78, \XMM4, \TMP2 | |
1110 | pxor \XMM4, \TMP2 | |
1111 | movdqa HashKey(%rsp), \TMP5 | |
1112 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1113 | PCLMULQDQ 0x00, \TMP5, \XMM4 # XMM4 = a0*b0 | |
1114 | movdqa HashKey_k(%rsp), \TMP4 | |
1115 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1116 | pxor \TMP1, \TMP6 | |
1117 | pxor \XMM4, \XMMDst | |
1118 | pxor \XMM1, \TMP2 | |
1119 | pxor \TMP6, \TMP2 | |
1120 | pxor \XMMDst, \TMP2 | |
1121 | # middle section of the temp results combined as in karatsuba algorithm | |
1122 | movdqa \TMP2, \TMP4 | |
1123 | pslldq $8, \TMP4 # left shift TMP4 2 DWs | |
1124 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
1125 | pxor \TMP4, \XMMDst | |
1126 | pxor \TMP2, \TMP6 | |
1127 | # TMP6:XMMDst holds the result of the accumulated carry-less multiplications | |
1128 | # first phase of the reduction | |
1129 | movdqa \XMMDst, \TMP2 | |
1130 | movdqa \XMMDst, \TMP3 | |
1131 | movdqa \XMMDst, \TMP4 | |
1132 | # move XMMDst into TMP2, TMP3, TMP4 in order to perform 3 shifts independently | |
1133 | pslld $31, \TMP2 # packed right shifting << 31 | |
1134 | pslld $30, \TMP3 # packed right shifting << 30 | |
1135 | pslld $25, \TMP4 # packed right shifting << 25 | |
1136 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1137 | pxor \TMP4, \TMP2 | |
1138 | movdqa \TMP2, \TMP7 | |
1139 | psrldq $4, \TMP7 # right shift TMP7 1 DW | |
1140 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
1141 | pxor \TMP2, \XMMDst | |
1142 | ||
1143 | # second phase of the reduction | |
1144 | movdqa \XMMDst, \TMP2 | |
1145 | # make 3 copies of XMMDst for doing 3 shift operations | |
1146 | movdqa \XMMDst, \TMP3 | |
1147 | movdqa \XMMDst, \TMP4 | |
1148 | psrld $1, \TMP2 # packed left shift >> 1 | |
1149 | psrld $2, \TMP3 # packed left shift >> 2 | |
1150 | psrld $7, \TMP4 # packed left shift >> 7 | |
1151 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1152 | pxor \TMP4, \TMP2 | |
1153 | pxor \TMP7, \TMP2 | |
1154 | pxor \TMP2, \XMMDst | |
1155 | pxor \TMP6, \XMMDst # reduced result is in XMMDst | |
1156 | .endm | |
1157 | ||
1158 | /* Encryption of a single block done*/ | |
1159 | .macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1 | |
1160 | ||
1161 | pxor (%arg1), \XMM0 | |
1162 | movaps 16(%arg1), \TMP1 | |
1163 | AESENC \TMP1, \XMM0 | |
1164 | movaps 32(%arg1), \TMP1 | |
1165 | AESENC \TMP1, \XMM0 | |
1166 | movaps 48(%arg1), \TMP1 | |
1167 | AESENC \TMP1, \XMM0 | |
1168 | movaps 64(%arg1), \TMP1 | |
1169 | AESENC \TMP1, \XMM0 | |
1170 | movaps 80(%arg1), \TMP1 | |
1171 | AESENC \TMP1, \XMM0 | |
1172 | movaps 96(%arg1), \TMP1 | |
1173 | AESENC \TMP1, \XMM0 | |
1174 | movaps 112(%arg1), \TMP1 | |
1175 | AESENC \TMP1, \XMM0 | |
1176 | movaps 128(%arg1), \TMP1 | |
1177 | AESENC \TMP1, \XMM0 | |
1178 | movaps 144(%arg1), \TMP1 | |
1179 | AESENC \TMP1, \XMM0 | |
1180 | movaps 160(%arg1), \TMP1 | |
1181 | AESENCLAST \TMP1, \XMM0 | |
1182 | .endm | |
1183 | ||
1184 | ||
1185 | /***************************************************************************** | |
1186 | * void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1187 | * u8 *out, // Plaintext output. Encrypt in-place is allowed. | |
1188 | * const u8 *in, // Ciphertext input | |
1189 | * u64 plaintext_len, // Length of data in bytes for decryption. | |
1190 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1191 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1192 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1193 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1194 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1195 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1196 | * u8 *auth_tag, // Authenticated Tag output. The driver will compare this to the | |
1197 | * // given authentication tag and only return the plaintext if they match. | |
1198 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 | |
1199 | * // (most likely), 12 or 8. | |
1200 | * | |
1201 | * Assumptions: | |
1202 | * | |
1203 | * keys: | |
1204 | * keys are pre-expanded and aligned to 16 bytes. we are using the first | |
1205 | * set of 11 keys in the data structure void *aes_ctx | |
1206 | * | |
1207 | * iv: | |
1208 | * 0 1 2 3 | |
1209 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1210 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1211 | * | Salt (From the SA) | | |
1212 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1213 | * | Initialization Vector | | |
1214 | * | (This is the sequence number from IPSec header) | | |
1215 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1216 | * | 0x1 | | |
1217 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1218 | * | |
1219 | * | |
1220 | * | |
1221 | * AAD: | |
1222 | * AAD padded to 128 bits with 0 | |
1223 | * for example, assume AAD is a u32 vector | |
1224 | * | |
1225 | * if AAD is 8 bytes: | |
1226 | * AAD[3] = {A0, A1}; | |
1227 | * padded AAD in xmm register = {A1 A0 0 0} | |
1228 | * | |
1229 | * 0 1 2 3 | |
1230 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1231 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1232 | * | SPI (A1) | | |
1233 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1234 | * | 32-bit Sequence Number (A0) | | |
1235 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1236 | * | 0x0 | | |
1237 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1238 | * | |
1239 | * AAD Format with 32-bit Sequence Number | |
1240 | * | |
1241 | * if AAD is 12 bytes: | |
1242 | * AAD[3] = {A0, A1, A2}; | |
1243 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1244 | * | |
1245 | * 0 1 2 3 | |
1246 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1247 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1248 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1249 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1250 | * | SPI (A2) | | |
1251 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1252 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1253 | * | | | |
1254 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1255 | * | 0x0 | | |
1256 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1257 | * | |
1258 | * AAD Format with 64-bit Extended Sequence Number | |
1259 | * | |
1260 | * aadLen: | |
1261 | * from the definition of the spec, aadLen can only be 8 or 12 bytes. | |
1262 | * The code supports 16 too but for other sizes, the code will fail. | |
1263 | * | |
1264 | * TLen: | |
1265 | * from the definition of the spec, TLen can only be 8, 12 or 16 bytes. | |
1266 | * For other sizes, the code will fail. | |
1267 | * | |
1268 | * poly = x^128 + x^127 + x^126 + x^121 + 1 | |
1269 | * | |
1270 | *****************************************************************************/ | |
0bd82f5f TS |
1271 | ENTRY(aesni_gcm_dec) |
1272 | push %r12 | |
1273 | push %r13 | |
1274 | push %r14 | |
1275 | mov %rsp, %r14 | |
1276 | /* | |
1277 | * states of %xmm registers %xmm6:%xmm15 not saved | |
1278 | * all %xmm registers are clobbered | |
1279 | */ | |
1280 | sub $VARIABLE_OFFSET, %rsp | |
1281 | and $~63, %rsp # align rsp to 64 bytes | |
1282 | mov %arg6, %r12 | |
1283 | movdqu (%r12), %xmm13 # %xmm13 = HashKey | |
3c097b80 TS |
1284 | movdqa SHUF_MASK(%rip), %xmm2 |
1285 | PSHUFB_XMM %xmm2, %xmm13 | |
1286 | ||
0bd82f5f TS |
1287 | |
1288 | # Precompute HashKey<<1 (mod poly) from the hash key (required for GHASH) | |
1289 | ||
1290 | movdqa %xmm13, %xmm2 | |
1291 | psllq $1, %xmm13 | |
1292 | psrlq $63, %xmm2 | |
1293 | movdqa %xmm2, %xmm1 | |
1294 | pslldq $8, %xmm2 | |
1295 | psrldq $8, %xmm1 | |
1296 | por %xmm2, %xmm13 | |
1297 | ||
1298 | # Reduction | |
1299 | ||
1300 | pshufd $0x24, %xmm1, %xmm2 | |
1301 | pcmpeqd TWOONE(%rip), %xmm2 | |
1302 | pand POLY(%rip), %xmm2 | |
1303 | pxor %xmm2, %xmm13 # %xmm13 holds the HashKey<<1 (mod poly) | |
1304 | ||
1305 | ||
1306 | # Decrypt first few blocks | |
1307 | ||
1308 | movdqa %xmm13, HashKey(%rsp) # store HashKey<<1 (mod poly) | |
1309 | mov %arg4, %r13 # save the number of bytes of plaintext/ciphertext | |
1310 | and $-16, %r13 # %r13 = %r13 - (%r13 mod 16) | |
1311 | mov %r13, %r12 | |
1312 | and $(3<<4), %r12 | |
1313 | jz _initial_num_blocks_is_0_decrypt | |
1314 | cmp $(2<<4), %r12 | |
1315 | jb _initial_num_blocks_is_1_decrypt | |
1316 | je _initial_num_blocks_is_2_decrypt | |
1317 | _initial_num_blocks_is_3_decrypt: | |
3c097b80 | 1318 | INITIAL_BLOCKS_DEC 3, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1319 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, dec |
1320 | sub $48, %r13 | |
1321 | jmp _initial_blocks_decrypted | |
1322 | _initial_num_blocks_is_2_decrypt: | |
3c097b80 | 1323 | INITIAL_BLOCKS_DEC 2, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1324 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, dec |
1325 | sub $32, %r13 | |
1326 | jmp _initial_blocks_decrypted | |
1327 | _initial_num_blocks_is_1_decrypt: | |
3c097b80 | 1328 | INITIAL_BLOCKS_DEC 1, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1329 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, dec |
1330 | sub $16, %r13 | |
1331 | jmp _initial_blocks_decrypted | |
1332 | _initial_num_blocks_is_0_decrypt: | |
3c097b80 | 1333 | INITIAL_BLOCKS_DEC 0, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1334 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, dec |
1335 | _initial_blocks_decrypted: | |
1336 | cmp $0, %r13 | |
1337 | je _zero_cipher_left_decrypt | |
1338 | sub $64, %r13 | |
1339 | je _four_cipher_left_decrypt | |
1340 | _decrypt_by_4: | |
3c097b80 | 1341 | GHASH_4_ENCRYPT_4_PARALLEL_DEC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1342 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, dec |
1343 | add $64, %r11 | |
1344 | sub $64, %r13 | |
1345 | jne _decrypt_by_4 | |
1346 | _four_cipher_left_decrypt: | |
1347 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1348 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1349 | _zero_cipher_left_decrypt: | |
1350 | mov %arg4, %r13 | |
1351 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1352 | je _multiple_of_16_bytes_decrypt | |
1353 | ||
0d2eb44f | 1354 | # Handle the last <16 byte block separately |
0bd82f5f TS |
1355 | |
1356 | paddd ONE(%rip), %xmm0 # increment CNT to get Yn | |
3c097b80 TS |
1357 | movdqa SHUF_MASK(%rip), %xmm10 |
1358 | PSHUFB_XMM %xmm10, %xmm0 | |
1359 | ||
0bd82f5f TS |
1360 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Yn) |
1361 | sub $16, %r11 | |
1362 | add %r13, %r11 | |
0d2eb44f | 1363 | movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte block |
0bd82f5f TS |
1364 | lea SHIFT_MASK+16(%rip), %r12 |
1365 | sub %r13, %r12 | |
1366 | # adjust the shuffle mask pointer to be able to shift 16-%r13 bytes | |
1367 | # (%r13 is the number of bytes in plaintext mod 16) | |
1368 | movdqu (%r12), %xmm2 # get the appropriate shuffle mask | |
3c097b80 TS |
1369 | PSHUFB_XMM %xmm2, %xmm1 # right shift 16-%r13 butes |
1370 | ||
0bd82f5f TS |
1371 | movdqa %xmm1, %xmm2 |
1372 | pxor %xmm1, %xmm0 # Ciphertext XOR E(K, Yn) | |
1373 | movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 | |
1374 | # get the appropriate mask to mask out top 16-%r13 bytes of %xmm0 | |
1375 | pand %xmm1, %xmm0 # mask out top 16-%r13 bytes of %xmm0 | |
1376 | pand %xmm1, %xmm2 | |
3c097b80 TS |
1377 | movdqa SHUF_MASK(%rip), %xmm10 |
1378 | PSHUFB_XMM %xmm10 ,%xmm2 | |
1379 | ||
0bd82f5f TS |
1380 | pxor %xmm2, %xmm8 |
1381 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1382 | # GHASH computation for the last <16 byte block | |
1383 | sub %r13, %r11 | |
1384 | add $16, %r11 | |
1385 | ||
1386 | # output %r13 bytes | |
3c097b80 | 1387 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1388 | cmp $8, %r13 |
1389 | jle _less_than_8_bytes_left_decrypt | |
1390 | mov %rax, (%arg2 , %r11, 1) | |
1391 | add $8, %r11 | |
1392 | psrldq $8, %xmm0 | |
3c097b80 | 1393 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1394 | sub $8, %r13 |
1395 | _less_than_8_bytes_left_decrypt: | |
1396 | mov %al, (%arg2, %r11, 1) | |
1397 | add $1, %r11 | |
1398 | shr $8, %rax | |
1399 | sub $1, %r13 | |
1400 | jne _less_than_8_bytes_left_decrypt | |
1401 | _multiple_of_16_bytes_decrypt: | |
1402 | mov arg8, %r12 # %r13 = aadLen (number of bytes) | |
1403 | shl $3, %r12 # convert into number of bits | |
1404 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1405 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1406 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1407 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1408 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1409 | pxor %xmm15, %xmm8 | |
1410 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1411 | # final GHASH computation | |
3c097b80 TS |
1412 | movdqa SHUF_MASK(%rip), %xmm10 |
1413 | PSHUFB_XMM %xmm10, %xmm8 | |
1414 | ||
0bd82f5f TS |
1415 | mov %arg5, %rax # %rax = *Y0 |
1416 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1417 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0) | |
1418 | pxor %xmm8, %xmm0 | |
1419 | _return_T_decrypt: | |
1420 | mov arg9, %r10 # %r10 = authTag | |
1421 | mov arg10, %r11 # %r11 = auth_tag_len | |
1422 | cmp $16, %r11 | |
1423 | je _T_16_decrypt | |
1424 | cmp $12, %r11 | |
1425 | je _T_12_decrypt | |
1426 | _T_8_decrypt: | |
3c097b80 | 1427 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1428 | mov %rax, (%r10) |
1429 | jmp _return_T_done_decrypt | |
1430 | _T_12_decrypt: | |
3c097b80 | 1431 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1432 | mov %rax, (%r10) |
1433 | psrldq $8, %xmm0 | |
1434 | movd %xmm0, %eax | |
1435 | mov %eax, 8(%r10) | |
1436 | jmp _return_T_done_decrypt | |
1437 | _T_16_decrypt: | |
1438 | movdqu %xmm0, (%r10) | |
1439 | _return_T_done_decrypt: | |
1440 | mov %r14, %rsp | |
1441 | pop %r14 | |
1442 | pop %r13 | |
1443 | pop %r12 | |
1444 | ret | |
8309b745 | 1445 | ENDPROC(aesni_gcm_dec) |
0bd82f5f TS |
1446 | |
1447 | ||
1448 | /***************************************************************************** | |
1449 | * void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1450 | * u8 *out, // Ciphertext output. Encrypt in-place is allowed. | |
1451 | * const u8 *in, // Plaintext input | |
1452 | * u64 plaintext_len, // Length of data in bytes for encryption. | |
1453 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1454 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1455 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1456 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1457 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1458 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1459 | * u8 *auth_tag, // Authenticated Tag output. | |
1460 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely), | |
1461 | * // 12 or 8. | |
1462 | * | |
1463 | * Assumptions: | |
1464 | * | |
1465 | * keys: | |
1466 | * keys are pre-expanded and aligned to 16 bytes. we are using the | |
1467 | * first set of 11 keys in the data structure void *aes_ctx | |
1468 | * | |
1469 | * | |
1470 | * iv: | |
1471 | * 0 1 2 3 | |
1472 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1473 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1474 | * | Salt (From the SA) | | |
1475 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1476 | * | Initialization Vector | | |
1477 | * | (This is the sequence number from IPSec header) | | |
1478 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1479 | * | 0x1 | | |
1480 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1481 | * | |
1482 | * | |
1483 | * | |
1484 | * AAD: | |
1485 | * AAD padded to 128 bits with 0 | |
1486 | * for example, assume AAD is a u32 vector | |
1487 | * | |
1488 | * if AAD is 8 bytes: | |
1489 | * AAD[3] = {A0, A1}; | |
1490 | * padded AAD in xmm register = {A1 A0 0 0} | |
1491 | * | |
1492 | * 0 1 2 3 | |
1493 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1494 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1495 | * | SPI (A1) | | |
1496 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1497 | * | 32-bit Sequence Number (A0) | | |
1498 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1499 | * | 0x0 | | |
1500 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1501 | * | |
1502 | * AAD Format with 32-bit Sequence Number | |
1503 | * | |
1504 | * if AAD is 12 bytes: | |
1505 | * AAD[3] = {A0, A1, A2}; | |
1506 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1507 | * | |
1508 | * 0 1 2 3 | |
1509 | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
1510 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1511 | * | SPI (A2) | | |
1512 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1513 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1514 | * | | | |
1515 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1516 | * | 0x0 | | |
1517 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1518 | * | |
1519 | * AAD Format with 64-bit Extended Sequence Number | |
1520 | * | |
1521 | * aadLen: | |
1522 | * from the definition of the spec, aadLen can only be 8 or 12 bytes. | |
1523 | * The code supports 16 too but for other sizes, the code will fail. | |
1524 | * | |
1525 | * TLen: | |
1526 | * from the definition of the spec, TLen can only be 8, 12 or 16 bytes. | |
1527 | * For other sizes, the code will fail. | |
1528 | * | |
1529 | * poly = x^128 + x^127 + x^126 + x^121 + 1 | |
1530 | ***************************************************************************/ | |
1531 | ENTRY(aesni_gcm_enc) | |
1532 | push %r12 | |
1533 | push %r13 | |
1534 | push %r14 | |
1535 | mov %rsp, %r14 | |
1536 | # | |
1537 | # states of %xmm registers %xmm6:%xmm15 not saved | |
1538 | # all %xmm registers are clobbered | |
1539 | # | |
1540 | sub $VARIABLE_OFFSET, %rsp | |
1541 | and $~63, %rsp | |
1542 | mov %arg6, %r12 | |
1543 | movdqu (%r12), %xmm13 | |
3c097b80 TS |
1544 | movdqa SHUF_MASK(%rip), %xmm2 |
1545 | PSHUFB_XMM %xmm2, %xmm13 | |
1546 | ||
0bd82f5f TS |
1547 | |
1548 | # precompute HashKey<<1 mod poly from the HashKey (required for GHASH) | |
1549 | ||
1550 | movdqa %xmm13, %xmm2 | |
1551 | psllq $1, %xmm13 | |
1552 | psrlq $63, %xmm2 | |
1553 | movdqa %xmm2, %xmm1 | |
1554 | pslldq $8, %xmm2 | |
1555 | psrldq $8, %xmm1 | |
1556 | por %xmm2, %xmm13 | |
1557 | ||
1558 | # reduce HashKey<<1 | |
1559 | ||
1560 | pshufd $0x24, %xmm1, %xmm2 | |
1561 | pcmpeqd TWOONE(%rip), %xmm2 | |
1562 | pand POLY(%rip), %xmm2 | |
1563 | pxor %xmm2, %xmm13 | |
1564 | movdqa %xmm13, HashKey(%rsp) | |
1565 | mov %arg4, %r13 # %xmm13 holds HashKey<<1 (mod poly) | |
1566 | and $-16, %r13 | |
1567 | mov %r13, %r12 | |
1568 | ||
1569 | # Encrypt first few blocks | |
1570 | ||
1571 | and $(3<<4), %r12 | |
1572 | jz _initial_num_blocks_is_0_encrypt | |
1573 | cmp $(2<<4), %r12 | |
1574 | jb _initial_num_blocks_is_1_encrypt | |
1575 | je _initial_num_blocks_is_2_encrypt | |
1576 | _initial_num_blocks_is_3_encrypt: | |
3c097b80 | 1577 | INITIAL_BLOCKS_ENC 3, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1578 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, enc |
1579 | sub $48, %r13 | |
1580 | jmp _initial_blocks_encrypted | |
1581 | _initial_num_blocks_is_2_encrypt: | |
3c097b80 | 1582 | INITIAL_BLOCKS_ENC 2, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1583 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, enc |
1584 | sub $32, %r13 | |
1585 | jmp _initial_blocks_encrypted | |
1586 | _initial_num_blocks_is_1_encrypt: | |
3c097b80 | 1587 | INITIAL_BLOCKS_ENC 1, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1588 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, enc |
1589 | sub $16, %r13 | |
1590 | jmp _initial_blocks_encrypted | |
1591 | _initial_num_blocks_is_0_encrypt: | |
3c097b80 | 1592 | INITIAL_BLOCKS_ENC 0, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1593 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, enc |
1594 | _initial_blocks_encrypted: | |
1595 | ||
1596 | # Main loop - Encrypt remaining blocks | |
1597 | ||
1598 | cmp $0, %r13 | |
1599 | je _zero_cipher_left_encrypt | |
1600 | sub $64, %r13 | |
1601 | je _four_cipher_left_encrypt | |
1602 | _encrypt_by_4_encrypt: | |
3c097b80 | 1603 | GHASH_4_ENCRYPT_4_PARALLEL_ENC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1604 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, enc |
1605 | add $64, %r11 | |
1606 | sub $64, %r13 | |
1607 | jne _encrypt_by_4_encrypt | |
1608 | _four_cipher_left_encrypt: | |
1609 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1610 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1611 | _zero_cipher_left_encrypt: | |
1612 | mov %arg4, %r13 | |
1613 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1614 | je _multiple_of_16_bytes_encrypt | |
1615 | ||
0d2eb44f | 1616 | # Handle the last <16 Byte block separately |
0bd82f5f | 1617 | paddd ONE(%rip), %xmm0 # INCR CNT to get Yn |
3c097b80 TS |
1618 | movdqa SHUF_MASK(%rip), %xmm10 |
1619 | PSHUFB_XMM %xmm10, %xmm0 | |
1620 | ||
60af520c | 1621 | |
0bd82f5f TS |
1622 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn) |
1623 | sub $16, %r11 | |
1624 | add %r13, %r11 | |
1625 | movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte blocks | |
1626 | lea SHIFT_MASK+16(%rip), %r12 | |
1627 | sub %r13, %r12 | |
1628 | # adjust the shuffle mask pointer to be able to shift 16-r13 bytes | |
1629 | # (%r13 is the number of bytes in plaintext mod 16) | |
1630 | movdqu (%r12), %xmm2 # get the appropriate shuffle mask | |
3c097b80 | 1631 | PSHUFB_XMM %xmm2, %xmm1 # shift right 16-r13 byte |
0bd82f5f TS |
1632 | pxor %xmm1, %xmm0 # Plaintext XOR Encrypt(K, Yn) |
1633 | movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 | |
1634 | # get the appropriate mask to mask out top 16-r13 bytes of xmm0 | |
1635 | pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0 | |
3c097b80 TS |
1636 | movdqa SHUF_MASK(%rip), %xmm10 |
1637 | PSHUFB_XMM %xmm10,%xmm0 | |
0bd82f5f | 1638 | |
0bd82f5f TS |
1639 | pxor %xmm0, %xmm8 |
1640 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1641 | # GHASH computation for the last <16 byte block | |
1642 | sub %r13, %r11 | |
1643 | add $16, %r11 | |
60af520c TS |
1644 | |
1645 | movdqa SHUF_MASK(%rip), %xmm10 | |
1646 | PSHUFB_XMM %xmm10, %xmm0 | |
3c097b80 | 1647 | |
0bd82f5f TS |
1648 | # shuffle xmm0 back to output as ciphertext |
1649 | ||
1650 | # Output %r13 bytes | |
3c097b80 | 1651 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1652 | cmp $8, %r13 |
1653 | jle _less_than_8_bytes_left_encrypt | |
1654 | mov %rax, (%arg2 , %r11, 1) | |
1655 | add $8, %r11 | |
1656 | psrldq $8, %xmm0 | |
3c097b80 | 1657 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1658 | sub $8, %r13 |
1659 | _less_than_8_bytes_left_encrypt: | |
1660 | mov %al, (%arg2, %r11, 1) | |
1661 | add $1, %r11 | |
1662 | shr $8, %rax | |
1663 | sub $1, %r13 | |
1664 | jne _less_than_8_bytes_left_encrypt | |
1665 | _multiple_of_16_bytes_encrypt: | |
1666 | mov arg8, %r12 # %r12 = addLen (number of bytes) | |
1667 | shl $3, %r12 | |
1668 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1669 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1670 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1671 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1672 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1673 | pxor %xmm15, %xmm8 | |
1674 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1675 | # final GHASH computation | |
3c097b80 TS |
1676 | movdqa SHUF_MASK(%rip), %xmm10 |
1677 | PSHUFB_XMM %xmm10, %xmm8 # perform a 16 byte swap | |
0bd82f5f | 1678 | |
0bd82f5f TS |
1679 | mov %arg5, %rax # %rax = *Y0 |
1680 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1681 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm15 # Encrypt(K, Y0) | |
1682 | pxor %xmm8, %xmm0 | |
1683 | _return_T_encrypt: | |
1684 | mov arg9, %r10 # %r10 = authTag | |
1685 | mov arg10, %r11 # %r11 = auth_tag_len | |
1686 | cmp $16, %r11 | |
1687 | je _T_16_encrypt | |
1688 | cmp $12, %r11 | |
1689 | je _T_12_encrypt | |
1690 | _T_8_encrypt: | |
3c097b80 | 1691 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1692 | mov %rax, (%r10) |
1693 | jmp _return_T_done_encrypt | |
1694 | _T_12_encrypt: | |
3c097b80 | 1695 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1696 | mov %rax, (%r10) |
1697 | psrldq $8, %xmm0 | |
1698 | movd %xmm0, %eax | |
1699 | mov %eax, 8(%r10) | |
1700 | jmp _return_T_done_encrypt | |
1701 | _T_16_encrypt: | |
1702 | movdqu %xmm0, (%r10) | |
1703 | _return_T_done_encrypt: | |
1704 | mov %r14, %rsp | |
1705 | pop %r14 | |
1706 | pop %r13 | |
1707 | pop %r12 | |
1708 | ret | |
8309b745 | 1709 | ENDPROC(aesni_gcm_enc) |
3c097b80 | 1710 | |
559ad0ff | 1711 | #endif |
0bd82f5f TS |
1712 | |
1713 | ||
8309b745 | 1714 | .align 4 |
54b6a1bd HY |
1715 | _key_expansion_128: |
1716 | _key_expansion_256a: | |
1717 | pshufd $0b11111111, %xmm1, %xmm1 | |
1718 | shufps $0b00010000, %xmm0, %xmm4 | |
1719 | pxor %xmm4, %xmm0 | |
1720 | shufps $0b10001100, %xmm0, %xmm4 | |
1721 | pxor %xmm4, %xmm0 | |
1722 | pxor %xmm1, %xmm0 | |
0d258efb MK |
1723 | movaps %xmm0, (TKEYP) |
1724 | add $0x10, TKEYP | |
54b6a1bd | 1725 | ret |
8309b745 JK |
1726 | ENDPROC(_key_expansion_128) |
1727 | ENDPROC(_key_expansion_256a) | |
54b6a1bd | 1728 | |
0d258efb | 1729 | .align 4 |
54b6a1bd HY |
1730 | _key_expansion_192a: |
1731 | pshufd $0b01010101, %xmm1, %xmm1 | |
1732 | shufps $0b00010000, %xmm0, %xmm4 | |
1733 | pxor %xmm4, %xmm0 | |
1734 | shufps $0b10001100, %xmm0, %xmm4 | |
1735 | pxor %xmm4, %xmm0 | |
1736 | pxor %xmm1, %xmm0 | |
1737 | ||
1738 | movaps %xmm2, %xmm5 | |
1739 | movaps %xmm2, %xmm6 | |
1740 | pslldq $4, %xmm5 | |
1741 | pshufd $0b11111111, %xmm0, %xmm3 | |
1742 | pxor %xmm3, %xmm2 | |
1743 | pxor %xmm5, %xmm2 | |
1744 | ||
1745 | movaps %xmm0, %xmm1 | |
1746 | shufps $0b01000100, %xmm0, %xmm6 | |
0d258efb | 1747 | movaps %xmm6, (TKEYP) |
54b6a1bd | 1748 | shufps $0b01001110, %xmm2, %xmm1 |
0d258efb MK |
1749 | movaps %xmm1, 0x10(TKEYP) |
1750 | add $0x20, TKEYP | |
54b6a1bd | 1751 | ret |
8309b745 | 1752 | ENDPROC(_key_expansion_192a) |
54b6a1bd | 1753 | |
0d258efb | 1754 | .align 4 |
54b6a1bd HY |
1755 | _key_expansion_192b: |
1756 | pshufd $0b01010101, %xmm1, %xmm1 | |
1757 | shufps $0b00010000, %xmm0, %xmm4 | |
1758 | pxor %xmm4, %xmm0 | |
1759 | shufps $0b10001100, %xmm0, %xmm4 | |
1760 | pxor %xmm4, %xmm0 | |
1761 | pxor %xmm1, %xmm0 | |
1762 | ||
1763 | movaps %xmm2, %xmm5 | |
1764 | pslldq $4, %xmm5 | |
1765 | pshufd $0b11111111, %xmm0, %xmm3 | |
1766 | pxor %xmm3, %xmm2 | |
1767 | pxor %xmm5, %xmm2 | |
1768 | ||
0d258efb MK |
1769 | movaps %xmm0, (TKEYP) |
1770 | add $0x10, TKEYP | |
54b6a1bd | 1771 | ret |
8309b745 | 1772 | ENDPROC(_key_expansion_192b) |
54b6a1bd | 1773 | |
0d258efb | 1774 | .align 4 |
54b6a1bd HY |
1775 | _key_expansion_256b: |
1776 | pshufd $0b10101010, %xmm1, %xmm1 | |
1777 | shufps $0b00010000, %xmm2, %xmm4 | |
1778 | pxor %xmm4, %xmm2 | |
1779 | shufps $0b10001100, %xmm2, %xmm4 | |
1780 | pxor %xmm4, %xmm2 | |
1781 | pxor %xmm1, %xmm2 | |
0d258efb MK |
1782 | movaps %xmm2, (TKEYP) |
1783 | add $0x10, TKEYP | |
54b6a1bd | 1784 | ret |
8309b745 | 1785 | ENDPROC(_key_expansion_256b) |
54b6a1bd HY |
1786 | |
1787 | /* | |
1788 | * int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, | |
1789 | * unsigned int key_len) | |
1790 | */ | |
1791 | ENTRY(aesni_set_key) | |
0d258efb MK |
1792 | #ifndef __x86_64__ |
1793 | pushl KEYP | |
1794 | movl 8(%esp), KEYP # ctx | |
1795 | movl 12(%esp), UKEYP # in_key | |
1796 | movl 16(%esp), %edx # key_len | |
1797 | #endif | |
1798 | movups (UKEYP), %xmm0 # user key (first 16 bytes) | |
1799 | movaps %xmm0, (KEYP) | |
1800 | lea 0x10(KEYP), TKEYP # key addr | |
1801 | movl %edx, 480(KEYP) | |
54b6a1bd HY |
1802 | pxor %xmm4, %xmm4 # xmm4 is assumed 0 in _key_expansion_x |
1803 | cmp $24, %dl | |
1804 | jb .Lenc_key128 | |
1805 | je .Lenc_key192 | |
0d258efb MK |
1806 | movups 0x10(UKEYP), %xmm2 # other user key |
1807 | movaps %xmm2, (TKEYP) | |
1808 | add $0x10, TKEYP | |
b369e521 | 1809 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1810 | call _key_expansion_256a |
b369e521 | 1811 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 |
54b6a1bd | 1812 | call _key_expansion_256b |
b369e521 | 1813 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1814 | call _key_expansion_256a |
b369e521 | 1815 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 |
54b6a1bd | 1816 | call _key_expansion_256b |
b369e521 | 1817 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1818 | call _key_expansion_256a |
b369e521 | 1819 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 |
54b6a1bd | 1820 | call _key_expansion_256b |
b369e521 | 1821 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1822 | call _key_expansion_256a |
b369e521 | 1823 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 |
54b6a1bd | 1824 | call _key_expansion_256b |
b369e521 | 1825 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1826 | call _key_expansion_256a |
b369e521 | 1827 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 |
54b6a1bd | 1828 | call _key_expansion_256b |
b369e521 | 1829 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1830 | call _key_expansion_256a |
b369e521 | 1831 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 |
54b6a1bd | 1832 | call _key_expansion_256b |
b369e521 | 1833 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd HY |
1834 | call _key_expansion_256a |
1835 | jmp .Ldec_key | |
1836 | .Lenc_key192: | |
0d258efb | 1837 | movq 0x10(UKEYP), %xmm2 # other user key |
b369e521 | 1838 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1839 | call _key_expansion_192a |
b369e521 | 1840 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1841 | call _key_expansion_192b |
b369e521 | 1842 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1843 | call _key_expansion_192a |
b369e521 | 1844 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1845 | call _key_expansion_192b |
b369e521 | 1846 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1847 | call _key_expansion_192a |
b369e521 | 1848 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1849 | call _key_expansion_192b |
b369e521 | 1850 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd | 1851 | call _key_expansion_192a |
b369e521 | 1852 | AESKEYGENASSIST 0x80 %xmm2 %xmm1 # round 8 |
54b6a1bd HY |
1853 | call _key_expansion_192b |
1854 | jmp .Ldec_key | |
1855 | .Lenc_key128: | |
b369e521 | 1856 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 # round 1 |
54b6a1bd | 1857 | call _key_expansion_128 |
b369e521 | 1858 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 # round 2 |
54b6a1bd | 1859 | call _key_expansion_128 |
b369e521 | 1860 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 # round 3 |
54b6a1bd | 1861 | call _key_expansion_128 |
b369e521 | 1862 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 # round 4 |
54b6a1bd | 1863 | call _key_expansion_128 |
b369e521 | 1864 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 # round 5 |
54b6a1bd | 1865 | call _key_expansion_128 |
b369e521 | 1866 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 # round 6 |
54b6a1bd | 1867 | call _key_expansion_128 |
b369e521 | 1868 | AESKEYGENASSIST 0x40 %xmm0 %xmm1 # round 7 |
54b6a1bd | 1869 | call _key_expansion_128 |
b369e521 | 1870 | AESKEYGENASSIST 0x80 %xmm0 %xmm1 # round 8 |
54b6a1bd | 1871 | call _key_expansion_128 |
b369e521 | 1872 | AESKEYGENASSIST 0x1b %xmm0 %xmm1 # round 9 |
54b6a1bd | 1873 | call _key_expansion_128 |
b369e521 | 1874 | AESKEYGENASSIST 0x36 %xmm0 %xmm1 # round 10 |
54b6a1bd HY |
1875 | call _key_expansion_128 |
1876 | .Ldec_key: | |
0d258efb MK |
1877 | sub $0x10, TKEYP |
1878 | movaps (KEYP), %xmm0 | |
1879 | movaps (TKEYP), %xmm1 | |
1880 | movaps %xmm0, 240(TKEYP) | |
1881 | movaps %xmm1, 240(KEYP) | |
1882 | add $0x10, KEYP | |
1883 | lea 240-16(TKEYP), UKEYP | |
54b6a1bd HY |
1884 | .align 4 |
1885 | .Ldec_key_loop: | |
0d258efb | 1886 | movaps (KEYP), %xmm0 |
b369e521 | 1887 | AESIMC %xmm0 %xmm1 |
0d258efb MK |
1888 | movaps %xmm1, (UKEYP) |
1889 | add $0x10, KEYP | |
1890 | sub $0x10, UKEYP | |
1891 | cmp TKEYP, KEYP | |
54b6a1bd | 1892 | jb .Ldec_key_loop |
0d258efb MK |
1893 | xor AREG, AREG |
1894 | #ifndef __x86_64__ | |
1895 | popl KEYP | |
1896 | #endif | |
54b6a1bd | 1897 | ret |
8309b745 | 1898 | ENDPROC(aesni_set_key) |
54b6a1bd HY |
1899 | |
1900 | /* | |
1901 | * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
1902 | */ | |
1903 | ENTRY(aesni_enc) | |
0d258efb MK |
1904 | #ifndef __x86_64__ |
1905 | pushl KEYP | |
1906 | pushl KLEN | |
1907 | movl 12(%esp), KEYP | |
1908 | movl 16(%esp), OUTP | |
1909 | movl 20(%esp), INP | |
1910 | #endif | |
54b6a1bd HY |
1911 | movl 480(KEYP), KLEN # key length |
1912 | movups (INP), STATE # input | |
1913 | call _aesni_enc1 | |
1914 | movups STATE, (OUTP) # output | |
0d258efb MK |
1915 | #ifndef __x86_64__ |
1916 | popl KLEN | |
1917 | popl KEYP | |
1918 | #endif | |
54b6a1bd | 1919 | ret |
8309b745 | 1920 | ENDPROC(aesni_enc) |
54b6a1bd HY |
1921 | |
1922 | /* | |
1923 | * _aesni_enc1: internal ABI | |
1924 | * input: | |
1925 | * KEYP: key struct pointer | |
1926 | * KLEN: round count | |
1927 | * STATE: initial state (input) | |
1928 | * output: | |
1929 | * STATE: finial state (output) | |
1930 | * changed: | |
1931 | * KEY | |
1932 | * TKEYP (T1) | |
1933 | */ | |
0d258efb | 1934 | .align 4 |
54b6a1bd HY |
1935 | _aesni_enc1: |
1936 | movaps (KEYP), KEY # key | |
1937 | mov KEYP, TKEYP | |
1938 | pxor KEY, STATE # round 0 | |
1939 | add $0x30, TKEYP | |
1940 | cmp $24, KLEN | |
1941 | jb .Lenc128 | |
1942 | lea 0x20(TKEYP), TKEYP | |
1943 | je .Lenc192 | |
1944 | add $0x20, TKEYP | |
1945 | movaps -0x60(TKEYP), KEY | |
b369e521 | 1946 | AESENC KEY STATE |
54b6a1bd | 1947 | movaps -0x50(TKEYP), KEY |
b369e521 | 1948 | AESENC KEY STATE |
54b6a1bd HY |
1949 | .align 4 |
1950 | .Lenc192: | |
1951 | movaps -0x40(TKEYP), KEY | |
b369e521 | 1952 | AESENC KEY STATE |
54b6a1bd | 1953 | movaps -0x30(TKEYP), KEY |
b369e521 | 1954 | AESENC KEY STATE |
54b6a1bd HY |
1955 | .align 4 |
1956 | .Lenc128: | |
1957 | movaps -0x20(TKEYP), KEY | |
b369e521 | 1958 | AESENC KEY STATE |
54b6a1bd | 1959 | movaps -0x10(TKEYP), KEY |
b369e521 | 1960 | AESENC KEY STATE |
54b6a1bd | 1961 | movaps (TKEYP), KEY |
b369e521 | 1962 | AESENC KEY STATE |
54b6a1bd | 1963 | movaps 0x10(TKEYP), KEY |
b369e521 | 1964 | AESENC KEY STATE |
54b6a1bd | 1965 | movaps 0x20(TKEYP), KEY |
b369e521 | 1966 | AESENC KEY STATE |
54b6a1bd | 1967 | movaps 0x30(TKEYP), KEY |
b369e521 | 1968 | AESENC KEY STATE |
54b6a1bd | 1969 | movaps 0x40(TKEYP), KEY |
b369e521 | 1970 | AESENC KEY STATE |
54b6a1bd | 1971 | movaps 0x50(TKEYP), KEY |
b369e521 | 1972 | AESENC KEY STATE |
54b6a1bd | 1973 | movaps 0x60(TKEYP), KEY |
b369e521 | 1974 | AESENC KEY STATE |
54b6a1bd | 1975 | movaps 0x70(TKEYP), KEY |
b369e521 | 1976 | AESENCLAST KEY STATE |
54b6a1bd | 1977 | ret |
8309b745 | 1978 | ENDPROC(_aesni_enc1) |
54b6a1bd HY |
1979 | |
1980 | /* | |
1981 | * _aesni_enc4: internal ABI | |
1982 | * input: | |
1983 | * KEYP: key struct pointer | |
1984 | * KLEN: round count | |
1985 | * STATE1: initial state (input) | |
1986 | * STATE2 | |
1987 | * STATE3 | |
1988 | * STATE4 | |
1989 | * output: | |
1990 | * STATE1: finial state (output) | |
1991 | * STATE2 | |
1992 | * STATE3 | |
1993 | * STATE4 | |
1994 | * changed: | |
1995 | * KEY | |
1996 | * TKEYP (T1) | |
1997 | */ | |
0d258efb | 1998 | .align 4 |
54b6a1bd HY |
1999 | _aesni_enc4: |
2000 | movaps (KEYP), KEY # key | |
2001 | mov KEYP, TKEYP | |
2002 | pxor KEY, STATE1 # round 0 | |
2003 | pxor KEY, STATE2 | |
2004 | pxor KEY, STATE3 | |
2005 | pxor KEY, STATE4 | |
2006 | add $0x30, TKEYP | |
2007 | cmp $24, KLEN | |
2008 | jb .L4enc128 | |
2009 | lea 0x20(TKEYP), TKEYP | |
2010 | je .L4enc192 | |
2011 | add $0x20, TKEYP | |
2012 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
2013 | AESENC KEY STATE1 |
2014 | AESENC KEY STATE2 | |
2015 | AESENC KEY STATE3 | |
2016 | AESENC KEY STATE4 | |
54b6a1bd | 2017 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
2018 | AESENC KEY STATE1 |
2019 | AESENC KEY STATE2 | |
2020 | AESENC KEY STATE3 | |
2021 | AESENC KEY STATE4 | |
54b6a1bd HY |
2022 | #.align 4 |
2023 | .L4enc192: | |
2024 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
2025 | AESENC KEY STATE1 |
2026 | AESENC KEY STATE2 | |
2027 | AESENC KEY STATE3 | |
2028 | AESENC KEY STATE4 | |
54b6a1bd | 2029 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
2030 | AESENC KEY STATE1 |
2031 | AESENC KEY STATE2 | |
2032 | AESENC KEY STATE3 | |
2033 | AESENC KEY STATE4 | |
54b6a1bd HY |
2034 | #.align 4 |
2035 | .L4enc128: | |
2036 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
2037 | AESENC KEY STATE1 |
2038 | AESENC KEY STATE2 | |
2039 | AESENC KEY STATE3 | |
2040 | AESENC KEY STATE4 | |
54b6a1bd | 2041 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
2042 | AESENC KEY STATE1 |
2043 | AESENC KEY STATE2 | |
2044 | AESENC KEY STATE3 | |
2045 | AESENC KEY STATE4 | |
54b6a1bd | 2046 | movaps (TKEYP), KEY |
b369e521 HY |
2047 | AESENC KEY STATE1 |
2048 | AESENC KEY STATE2 | |
2049 | AESENC KEY STATE3 | |
2050 | AESENC KEY STATE4 | |
54b6a1bd | 2051 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
2052 | AESENC KEY STATE1 |
2053 | AESENC KEY STATE2 | |
2054 | AESENC KEY STATE3 | |
2055 | AESENC KEY STATE4 | |
54b6a1bd | 2056 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
2057 | AESENC KEY STATE1 |
2058 | AESENC KEY STATE2 | |
2059 | AESENC KEY STATE3 | |
2060 | AESENC KEY STATE4 | |
54b6a1bd | 2061 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
2062 | AESENC KEY STATE1 |
2063 | AESENC KEY STATE2 | |
2064 | AESENC KEY STATE3 | |
2065 | AESENC KEY STATE4 | |
54b6a1bd | 2066 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
2067 | AESENC KEY STATE1 |
2068 | AESENC KEY STATE2 | |
2069 | AESENC KEY STATE3 | |
2070 | AESENC KEY STATE4 | |
54b6a1bd | 2071 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
2072 | AESENC KEY STATE1 |
2073 | AESENC KEY STATE2 | |
2074 | AESENC KEY STATE3 | |
2075 | AESENC KEY STATE4 | |
54b6a1bd | 2076 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
2077 | AESENC KEY STATE1 |
2078 | AESENC KEY STATE2 | |
2079 | AESENC KEY STATE3 | |
2080 | AESENC KEY STATE4 | |
54b6a1bd | 2081 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
2082 | AESENCLAST KEY STATE1 # last round |
2083 | AESENCLAST KEY STATE2 | |
2084 | AESENCLAST KEY STATE3 | |
2085 | AESENCLAST KEY STATE4 | |
54b6a1bd | 2086 | ret |
8309b745 | 2087 | ENDPROC(_aesni_enc4) |
54b6a1bd HY |
2088 | |
2089 | /* | |
2090 | * void aesni_dec (struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
2091 | */ | |
2092 | ENTRY(aesni_dec) | |
0d258efb MK |
2093 | #ifndef __x86_64__ |
2094 | pushl KEYP | |
2095 | pushl KLEN | |
2096 | movl 12(%esp), KEYP | |
2097 | movl 16(%esp), OUTP | |
2098 | movl 20(%esp), INP | |
2099 | #endif | |
54b6a1bd HY |
2100 | mov 480(KEYP), KLEN # key length |
2101 | add $240, KEYP | |
2102 | movups (INP), STATE # input | |
2103 | call _aesni_dec1 | |
2104 | movups STATE, (OUTP) #output | |
0d258efb MK |
2105 | #ifndef __x86_64__ |
2106 | popl KLEN | |
2107 | popl KEYP | |
2108 | #endif | |
54b6a1bd | 2109 | ret |
8309b745 | 2110 | ENDPROC(aesni_dec) |
54b6a1bd HY |
2111 | |
2112 | /* | |
2113 | * _aesni_dec1: internal ABI | |
2114 | * input: | |
2115 | * KEYP: key struct pointer | |
2116 | * KLEN: key length | |
2117 | * STATE: initial state (input) | |
2118 | * output: | |
2119 | * STATE: finial state (output) | |
2120 | * changed: | |
2121 | * KEY | |
2122 | * TKEYP (T1) | |
2123 | */ | |
0d258efb | 2124 | .align 4 |
54b6a1bd HY |
2125 | _aesni_dec1: |
2126 | movaps (KEYP), KEY # key | |
2127 | mov KEYP, TKEYP | |
2128 | pxor KEY, STATE # round 0 | |
2129 | add $0x30, TKEYP | |
2130 | cmp $24, KLEN | |
2131 | jb .Ldec128 | |
2132 | lea 0x20(TKEYP), TKEYP | |
2133 | je .Ldec192 | |
2134 | add $0x20, TKEYP | |
2135 | movaps -0x60(TKEYP), KEY | |
b369e521 | 2136 | AESDEC KEY STATE |
54b6a1bd | 2137 | movaps -0x50(TKEYP), KEY |
b369e521 | 2138 | AESDEC KEY STATE |
54b6a1bd HY |
2139 | .align 4 |
2140 | .Ldec192: | |
2141 | movaps -0x40(TKEYP), KEY | |
b369e521 | 2142 | AESDEC KEY STATE |
54b6a1bd | 2143 | movaps -0x30(TKEYP), KEY |
b369e521 | 2144 | AESDEC KEY STATE |
54b6a1bd HY |
2145 | .align 4 |
2146 | .Ldec128: | |
2147 | movaps -0x20(TKEYP), KEY | |
b369e521 | 2148 | AESDEC KEY STATE |
54b6a1bd | 2149 | movaps -0x10(TKEYP), KEY |
b369e521 | 2150 | AESDEC KEY STATE |
54b6a1bd | 2151 | movaps (TKEYP), KEY |
b369e521 | 2152 | AESDEC KEY STATE |
54b6a1bd | 2153 | movaps 0x10(TKEYP), KEY |
b369e521 | 2154 | AESDEC KEY STATE |
54b6a1bd | 2155 | movaps 0x20(TKEYP), KEY |
b369e521 | 2156 | AESDEC KEY STATE |
54b6a1bd | 2157 | movaps 0x30(TKEYP), KEY |
b369e521 | 2158 | AESDEC KEY STATE |
54b6a1bd | 2159 | movaps 0x40(TKEYP), KEY |
b369e521 | 2160 | AESDEC KEY STATE |
54b6a1bd | 2161 | movaps 0x50(TKEYP), KEY |
b369e521 | 2162 | AESDEC KEY STATE |
54b6a1bd | 2163 | movaps 0x60(TKEYP), KEY |
b369e521 | 2164 | AESDEC KEY STATE |
54b6a1bd | 2165 | movaps 0x70(TKEYP), KEY |
b369e521 | 2166 | AESDECLAST KEY STATE |
54b6a1bd | 2167 | ret |
8309b745 | 2168 | ENDPROC(_aesni_dec1) |
54b6a1bd HY |
2169 | |
2170 | /* | |
2171 | * _aesni_dec4: internal ABI | |
2172 | * input: | |
2173 | * KEYP: key struct pointer | |
2174 | * KLEN: key length | |
2175 | * STATE1: initial state (input) | |
2176 | * STATE2 | |
2177 | * STATE3 | |
2178 | * STATE4 | |
2179 | * output: | |
2180 | * STATE1: finial state (output) | |
2181 | * STATE2 | |
2182 | * STATE3 | |
2183 | * STATE4 | |
2184 | * changed: | |
2185 | * KEY | |
2186 | * TKEYP (T1) | |
2187 | */ | |
0d258efb | 2188 | .align 4 |
54b6a1bd HY |
2189 | _aesni_dec4: |
2190 | movaps (KEYP), KEY # key | |
2191 | mov KEYP, TKEYP | |
2192 | pxor KEY, STATE1 # round 0 | |
2193 | pxor KEY, STATE2 | |
2194 | pxor KEY, STATE3 | |
2195 | pxor KEY, STATE4 | |
2196 | add $0x30, TKEYP | |
2197 | cmp $24, KLEN | |
2198 | jb .L4dec128 | |
2199 | lea 0x20(TKEYP), TKEYP | |
2200 | je .L4dec192 | |
2201 | add $0x20, TKEYP | |
2202 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
2203 | AESDEC KEY STATE1 |
2204 | AESDEC KEY STATE2 | |
2205 | AESDEC KEY STATE3 | |
2206 | AESDEC KEY STATE4 | |
54b6a1bd | 2207 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
2208 | AESDEC KEY STATE1 |
2209 | AESDEC KEY STATE2 | |
2210 | AESDEC KEY STATE3 | |
2211 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2212 | .align 4 |
2213 | .L4dec192: | |
2214 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
2215 | AESDEC KEY STATE1 |
2216 | AESDEC KEY STATE2 | |
2217 | AESDEC KEY STATE3 | |
2218 | AESDEC KEY STATE4 | |
54b6a1bd | 2219 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
2220 | AESDEC KEY STATE1 |
2221 | AESDEC KEY STATE2 | |
2222 | AESDEC KEY STATE3 | |
2223 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2224 | .align 4 |
2225 | .L4dec128: | |
2226 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
2227 | AESDEC KEY STATE1 |
2228 | AESDEC KEY STATE2 | |
2229 | AESDEC KEY STATE3 | |
2230 | AESDEC KEY STATE4 | |
54b6a1bd | 2231 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
2232 | AESDEC KEY STATE1 |
2233 | AESDEC KEY STATE2 | |
2234 | AESDEC KEY STATE3 | |
2235 | AESDEC KEY STATE4 | |
54b6a1bd | 2236 | movaps (TKEYP), KEY |
b369e521 HY |
2237 | AESDEC KEY STATE1 |
2238 | AESDEC KEY STATE2 | |
2239 | AESDEC KEY STATE3 | |
2240 | AESDEC KEY STATE4 | |
54b6a1bd | 2241 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
2242 | AESDEC KEY STATE1 |
2243 | AESDEC KEY STATE2 | |
2244 | AESDEC KEY STATE3 | |
2245 | AESDEC KEY STATE4 | |
54b6a1bd | 2246 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
2247 | AESDEC KEY STATE1 |
2248 | AESDEC KEY STATE2 | |
2249 | AESDEC KEY STATE3 | |
2250 | AESDEC KEY STATE4 | |
54b6a1bd | 2251 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
2252 | AESDEC KEY STATE1 |
2253 | AESDEC KEY STATE2 | |
2254 | AESDEC KEY STATE3 | |
2255 | AESDEC KEY STATE4 | |
54b6a1bd | 2256 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
2257 | AESDEC KEY STATE1 |
2258 | AESDEC KEY STATE2 | |
2259 | AESDEC KEY STATE3 | |
2260 | AESDEC KEY STATE4 | |
54b6a1bd | 2261 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
2262 | AESDEC KEY STATE1 |
2263 | AESDEC KEY STATE2 | |
2264 | AESDEC KEY STATE3 | |
2265 | AESDEC KEY STATE4 | |
54b6a1bd | 2266 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
2267 | AESDEC KEY STATE1 |
2268 | AESDEC KEY STATE2 | |
2269 | AESDEC KEY STATE3 | |
2270 | AESDEC KEY STATE4 | |
54b6a1bd | 2271 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
2272 | AESDECLAST KEY STATE1 # last round |
2273 | AESDECLAST KEY STATE2 | |
2274 | AESDECLAST KEY STATE3 | |
2275 | AESDECLAST KEY STATE4 | |
54b6a1bd | 2276 | ret |
8309b745 | 2277 | ENDPROC(_aesni_dec4) |
54b6a1bd HY |
2278 | |
2279 | /* | |
2280 | * void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2281 | * size_t len) | |
2282 | */ | |
2283 | ENTRY(aesni_ecb_enc) | |
0d258efb MK |
2284 | #ifndef __x86_64__ |
2285 | pushl LEN | |
2286 | pushl KEYP | |
2287 | pushl KLEN | |
2288 | movl 16(%esp), KEYP | |
2289 | movl 20(%esp), OUTP | |
2290 | movl 24(%esp), INP | |
2291 | movl 28(%esp), LEN | |
2292 | #endif | |
54b6a1bd HY |
2293 | test LEN, LEN # check length |
2294 | jz .Lecb_enc_ret | |
2295 | mov 480(KEYP), KLEN | |
2296 | cmp $16, LEN | |
2297 | jb .Lecb_enc_ret | |
2298 | cmp $64, LEN | |
2299 | jb .Lecb_enc_loop1 | |
2300 | .align 4 | |
2301 | .Lecb_enc_loop4: | |
2302 | movups (INP), STATE1 | |
2303 | movups 0x10(INP), STATE2 | |
2304 | movups 0x20(INP), STATE3 | |
2305 | movups 0x30(INP), STATE4 | |
2306 | call _aesni_enc4 | |
2307 | movups STATE1, (OUTP) | |
2308 | movups STATE2, 0x10(OUTP) | |
2309 | movups STATE3, 0x20(OUTP) | |
2310 | movups STATE4, 0x30(OUTP) | |
2311 | sub $64, LEN | |
2312 | add $64, INP | |
2313 | add $64, OUTP | |
2314 | cmp $64, LEN | |
2315 | jge .Lecb_enc_loop4 | |
2316 | cmp $16, LEN | |
2317 | jb .Lecb_enc_ret | |
2318 | .align 4 | |
2319 | .Lecb_enc_loop1: | |
2320 | movups (INP), STATE1 | |
2321 | call _aesni_enc1 | |
2322 | movups STATE1, (OUTP) | |
2323 | sub $16, LEN | |
2324 | add $16, INP | |
2325 | add $16, OUTP | |
2326 | cmp $16, LEN | |
2327 | jge .Lecb_enc_loop1 | |
2328 | .Lecb_enc_ret: | |
0d258efb MK |
2329 | #ifndef __x86_64__ |
2330 | popl KLEN | |
2331 | popl KEYP | |
2332 | popl LEN | |
2333 | #endif | |
54b6a1bd | 2334 | ret |
8309b745 | 2335 | ENDPROC(aesni_ecb_enc) |
54b6a1bd HY |
2336 | |
2337 | /* | |
2338 | * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2339 | * size_t len); | |
2340 | */ | |
2341 | ENTRY(aesni_ecb_dec) | |
0d258efb MK |
2342 | #ifndef __x86_64__ |
2343 | pushl LEN | |
2344 | pushl KEYP | |
2345 | pushl KLEN | |
2346 | movl 16(%esp), KEYP | |
2347 | movl 20(%esp), OUTP | |
2348 | movl 24(%esp), INP | |
2349 | movl 28(%esp), LEN | |
2350 | #endif | |
54b6a1bd HY |
2351 | test LEN, LEN |
2352 | jz .Lecb_dec_ret | |
2353 | mov 480(KEYP), KLEN | |
2354 | add $240, KEYP | |
2355 | cmp $16, LEN | |
2356 | jb .Lecb_dec_ret | |
2357 | cmp $64, LEN | |
2358 | jb .Lecb_dec_loop1 | |
2359 | .align 4 | |
2360 | .Lecb_dec_loop4: | |
2361 | movups (INP), STATE1 | |
2362 | movups 0x10(INP), STATE2 | |
2363 | movups 0x20(INP), STATE3 | |
2364 | movups 0x30(INP), STATE4 | |
2365 | call _aesni_dec4 | |
2366 | movups STATE1, (OUTP) | |
2367 | movups STATE2, 0x10(OUTP) | |
2368 | movups STATE3, 0x20(OUTP) | |
2369 | movups STATE4, 0x30(OUTP) | |
2370 | sub $64, LEN | |
2371 | add $64, INP | |
2372 | add $64, OUTP | |
2373 | cmp $64, LEN | |
2374 | jge .Lecb_dec_loop4 | |
2375 | cmp $16, LEN | |
2376 | jb .Lecb_dec_ret | |
2377 | .align 4 | |
2378 | .Lecb_dec_loop1: | |
2379 | movups (INP), STATE1 | |
2380 | call _aesni_dec1 | |
2381 | movups STATE1, (OUTP) | |
2382 | sub $16, LEN | |
2383 | add $16, INP | |
2384 | add $16, OUTP | |
2385 | cmp $16, LEN | |
2386 | jge .Lecb_dec_loop1 | |
2387 | .Lecb_dec_ret: | |
0d258efb MK |
2388 | #ifndef __x86_64__ |
2389 | popl KLEN | |
2390 | popl KEYP | |
2391 | popl LEN | |
2392 | #endif | |
54b6a1bd | 2393 | ret |
8309b745 | 2394 | ENDPROC(aesni_ecb_dec) |
54b6a1bd HY |
2395 | |
2396 | /* | |
2397 | * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2398 | * size_t len, u8 *iv) | |
2399 | */ | |
2400 | ENTRY(aesni_cbc_enc) | |
0d258efb MK |
2401 | #ifndef __x86_64__ |
2402 | pushl IVP | |
2403 | pushl LEN | |
2404 | pushl KEYP | |
2405 | pushl KLEN | |
2406 | movl 20(%esp), KEYP | |
2407 | movl 24(%esp), OUTP | |
2408 | movl 28(%esp), INP | |
2409 | movl 32(%esp), LEN | |
2410 | movl 36(%esp), IVP | |
2411 | #endif | |
54b6a1bd HY |
2412 | cmp $16, LEN |
2413 | jb .Lcbc_enc_ret | |
2414 | mov 480(KEYP), KLEN | |
2415 | movups (IVP), STATE # load iv as initial state | |
2416 | .align 4 | |
2417 | .Lcbc_enc_loop: | |
2418 | movups (INP), IN # load input | |
2419 | pxor IN, STATE | |
2420 | call _aesni_enc1 | |
2421 | movups STATE, (OUTP) # store output | |
2422 | sub $16, LEN | |
2423 | add $16, INP | |
2424 | add $16, OUTP | |
2425 | cmp $16, LEN | |
2426 | jge .Lcbc_enc_loop | |
2427 | movups STATE, (IVP) | |
2428 | .Lcbc_enc_ret: | |
0d258efb MK |
2429 | #ifndef __x86_64__ |
2430 | popl KLEN | |
2431 | popl KEYP | |
2432 | popl LEN | |
2433 | popl IVP | |
2434 | #endif | |
54b6a1bd | 2435 | ret |
8309b745 | 2436 | ENDPROC(aesni_cbc_enc) |
54b6a1bd HY |
2437 | |
2438 | /* | |
2439 | * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2440 | * size_t len, u8 *iv) | |
2441 | */ | |
2442 | ENTRY(aesni_cbc_dec) | |
0d258efb MK |
2443 | #ifndef __x86_64__ |
2444 | pushl IVP | |
2445 | pushl LEN | |
2446 | pushl KEYP | |
2447 | pushl KLEN | |
2448 | movl 20(%esp), KEYP | |
2449 | movl 24(%esp), OUTP | |
2450 | movl 28(%esp), INP | |
2451 | movl 32(%esp), LEN | |
2452 | movl 36(%esp), IVP | |
2453 | #endif | |
54b6a1bd | 2454 | cmp $16, LEN |
e6efaa02 | 2455 | jb .Lcbc_dec_just_ret |
54b6a1bd HY |
2456 | mov 480(KEYP), KLEN |
2457 | add $240, KEYP | |
2458 | movups (IVP), IV | |
2459 | cmp $64, LEN | |
2460 | jb .Lcbc_dec_loop1 | |
2461 | .align 4 | |
2462 | .Lcbc_dec_loop4: | |
2463 | movups (INP), IN1 | |
2464 | movaps IN1, STATE1 | |
2465 | movups 0x10(INP), IN2 | |
2466 | movaps IN2, STATE2 | |
0d258efb | 2467 | #ifdef __x86_64__ |
54b6a1bd HY |
2468 | movups 0x20(INP), IN3 |
2469 | movaps IN3, STATE3 | |
2470 | movups 0x30(INP), IN4 | |
2471 | movaps IN4, STATE4 | |
0d258efb MK |
2472 | #else |
2473 | movups 0x20(INP), IN1 | |
2474 | movaps IN1, STATE3 | |
2475 | movups 0x30(INP), IN2 | |
2476 | movaps IN2, STATE4 | |
2477 | #endif | |
54b6a1bd HY |
2478 | call _aesni_dec4 |
2479 | pxor IV, STATE1 | |
0d258efb | 2480 | #ifdef __x86_64__ |
54b6a1bd HY |
2481 | pxor IN1, STATE2 |
2482 | pxor IN2, STATE3 | |
2483 | pxor IN3, STATE4 | |
2484 | movaps IN4, IV | |
0d258efb | 2485 | #else |
0d258efb MK |
2486 | pxor IN1, STATE4 |
2487 | movaps IN2, IV | |
7c8d5184 MK |
2488 | movups (INP), IN1 |
2489 | pxor IN1, STATE2 | |
2490 | movups 0x10(INP), IN2 | |
2491 | pxor IN2, STATE3 | |
0d258efb | 2492 | #endif |
54b6a1bd HY |
2493 | movups STATE1, (OUTP) |
2494 | movups STATE2, 0x10(OUTP) | |
2495 | movups STATE3, 0x20(OUTP) | |
2496 | movups STATE4, 0x30(OUTP) | |
2497 | sub $64, LEN | |
2498 | add $64, INP | |
2499 | add $64, OUTP | |
2500 | cmp $64, LEN | |
2501 | jge .Lcbc_dec_loop4 | |
2502 | cmp $16, LEN | |
2503 | jb .Lcbc_dec_ret | |
2504 | .align 4 | |
2505 | .Lcbc_dec_loop1: | |
2506 | movups (INP), IN | |
2507 | movaps IN, STATE | |
2508 | call _aesni_dec1 | |
2509 | pxor IV, STATE | |
2510 | movups STATE, (OUTP) | |
2511 | movaps IN, IV | |
2512 | sub $16, LEN | |
2513 | add $16, INP | |
2514 | add $16, OUTP | |
2515 | cmp $16, LEN | |
2516 | jge .Lcbc_dec_loop1 | |
54b6a1bd | 2517 | .Lcbc_dec_ret: |
e6efaa02 HY |
2518 | movups IV, (IVP) |
2519 | .Lcbc_dec_just_ret: | |
0d258efb MK |
2520 | #ifndef __x86_64__ |
2521 | popl KLEN | |
2522 | popl KEYP | |
2523 | popl LEN | |
2524 | popl IVP | |
2525 | #endif | |
54b6a1bd | 2526 | ret |
8309b745 | 2527 | ENDPROC(aesni_cbc_dec) |
12387a46 | 2528 | |
0d258efb | 2529 | #ifdef __x86_64__ |
12387a46 HY |
2530 | .align 16 |
2531 | .Lbswap_mask: | |
2532 | .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 | |
2533 | ||
2534 | /* | |
2535 | * _aesni_inc_init: internal ABI | |
2536 | * setup registers used by _aesni_inc | |
2537 | * input: | |
2538 | * IV | |
2539 | * output: | |
2540 | * CTR: == IV, in little endian | |
2541 | * TCTR_LOW: == lower qword of CTR | |
2542 | * INC: == 1, in little endian | |
2543 | * BSWAP_MASK == endian swapping mask | |
2544 | */ | |
0d258efb | 2545 | .align 4 |
12387a46 HY |
2546 | _aesni_inc_init: |
2547 | movaps .Lbswap_mask, BSWAP_MASK | |
2548 | movaps IV, CTR | |
2549 | PSHUFB_XMM BSWAP_MASK CTR | |
2550 | mov $1, TCTR_LOW | |
32cbd7df HY |
2551 | MOVQ_R64_XMM TCTR_LOW INC |
2552 | MOVQ_R64_XMM CTR TCTR_LOW | |
12387a46 | 2553 | ret |
8309b745 | 2554 | ENDPROC(_aesni_inc_init) |
12387a46 HY |
2555 | |
2556 | /* | |
2557 | * _aesni_inc: internal ABI | |
2558 | * Increase IV by 1, IV is in big endian | |
2559 | * input: | |
2560 | * IV | |
2561 | * CTR: == IV, in little endian | |
2562 | * TCTR_LOW: == lower qword of CTR | |
2563 | * INC: == 1, in little endian | |
2564 | * BSWAP_MASK == endian swapping mask | |
2565 | * output: | |
2566 | * IV: Increase by 1 | |
2567 | * changed: | |
2568 | * CTR: == output IV, in little endian | |
2569 | * TCTR_LOW: == lower qword of CTR | |
2570 | */ | |
0d258efb | 2571 | .align 4 |
12387a46 HY |
2572 | _aesni_inc: |
2573 | paddq INC, CTR | |
2574 | add $1, TCTR_LOW | |
2575 | jnc .Linc_low | |
2576 | pslldq $8, INC | |
2577 | paddq INC, CTR | |
2578 | psrldq $8, INC | |
2579 | .Linc_low: | |
2580 | movaps CTR, IV | |
2581 | PSHUFB_XMM BSWAP_MASK IV | |
2582 | ret | |
8309b745 | 2583 | ENDPROC(_aesni_inc) |
12387a46 HY |
2584 | |
2585 | /* | |
2586 | * void aesni_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2587 | * size_t len, u8 *iv) | |
2588 | */ | |
2589 | ENTRY(aesni_ctr_enc) | |
2590 | cmp $16, LEN | |
2591 | jb .Lctr_enc_just_ret | |
2592 | mov 480(KEYP), KLEN | |
2593 | movups (IVP), IV | |
2594 | call _aesni_inc_init | |
2595 | cmp $64, LEN | |
2596 | jb .Lctr_enc_loop1 | |
2597 | .align 4 | |
2598 | .Lctr_enc_loop4: | |
2599 | movaps IV, STATE1 | |
2600 | call _aesni_inc | |
2601 | movups (INP), IN1 | |
2602 | movaps IV, STATE2 | |
2603 | call _aesni_inc | |
2604 | movups 0x10(INP), IN2 | |
2605 | movaps IV, STATE3 | |
2606 | call _aesni_inc | |
2607 | movups 0x20(INP), IN3 | |
2608 | movaps IV, STATE4 | |
2609 | call _aesni_inc | |
2610 | movups 0x30(INP), IN4 | |
2611 | call _aesni_enc4 | |
2612 | pxor IN1, STATE1 | |
2613 | movups STATE1, (OUTP) | |
2614 | pxor IN2, STATE2 | |
2615 | movups STATE2, 0x10(OUTP) | |
2616 | pxor IN3, STATE3 | |
2617 | movups STATE3, 0x20(OUTP) | |
2618 | pxor IN4, STATE4 | |
2619 | movups STATE4, 0x30(OUTP) | |
2620 | sub $64, LEN | |
2621 | add $64, INP | |
2622 | add $64, OUTP | |
2623 | cmp $64, LEN | |
2624 | jge .Lctr_enc_loop4 | |
2625 | cmp $16, LEN | |
2626 | jb .Lctr_enc_ret | |
2627 | .align 4 | |
2628 | .Lctr_enc_loop1: | |
2629 | movaps IV, STATE | |
2630 | call _aesni_inc | |
2631 | movups (INP), IN | |
2632 | call _aesni_enc1 | |
2633 | pxor IN, STATE | |
2634 | movups STATE, (OUTP) | |
2635 | sub $16, LEN | |
2636 | add $16, INP | |
2637 | add $16, OUTP | |
2638 | cmp $16, LEN | |
2639 | jge .Lctr_enc_loop1 | |
2640 | .Lctr_enc_ret: | |
2641 | movups IV, (IVP) | |
2642 | .Lctr_enc_just_ret: | |
2643 | ret | |
8309b745 | 2644 | ENDPROC(aesni_ctr_enc) |
c456a9cd JK |
2645 | |
2646 | /* | |
2647 | * _aesni_gf128mul_x_ble: internal ABI | |
2648 | * Multiply in GF(2^128) for XTS IVs | |
2649 | * input: | |
2650 | * IV: current IV | |
2651 | * GF128MUL_MASK == mask with 0x87 and 0x01 | |
2652 | * output: | |
2653 | * IV: next IV | |
2654 | * changed: | |
2655 | * CTR: == temporary value | |
2656 | */ | |
2657 | #define _aesni_gf128mul_x_ble() \ | |
2658 | pshufd $0x13, IV, CTR; \ | |
2659 | paddq IV, IV; \ | |
2660 | psrad $31, CTR; \ | |
2661 | pand GF128MUL_MASK, CTR; \ | |
2662 | pxor CTR, IV; | |
2663 | ||
2664 | /* | |
2665 | * void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2666 | * bool enc, u8 *iv) | |
2667 | */ | |
2668 | ENTRY(aesni_xts_crypt8) | |
2669 | cmpb $0, %cl | |
2670 | movl $0, %ecx | |
2671 | movl $240, %r10d | |
2672 | leaq _aesni_enc4, %r11 | |
2673 | leaq _aesni_dec4, %rax | |
2674 | cmovel %r10d, %ecx | |
2675 | cmoveq %rax, %r11 | |
2676 | ||
2677 | movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK | |
2678 | movups (IVP), IV | |
2679 | ||
2680 | mov 480(KEYP), KLEN | |
2681 | addq %rcx, KEYP | |
2682 | ||
2683 | movdqa IV, STATE1 | |
fe6510b5 JK |
2684 | movdqu 0x00(INP), INC |
2685 | pxor INC, STATE1 | |
c456a9cd JK |
2686 | movdqu IV, 0x00(OUTP) |
2687 | ||
2688 | _aesni_gf128mul_x_ble() | |
2689 | movdqa IV, STATE2 | |
fe6510b5 JK |
2690 | movdqu 0x10(INP), INC |
2691 | pxor INC, STATE2 | |
c456a9cd JK |
2692 | movdqu IV, 0x10(OUTP) |
2693 | ||
2694 | _aesni_gf128mul_x_ble() | |
2695 | movdqa IV, STATE3 | |
fe6510b5 JK |
2696 | movdqu 0x20(INP), INC |
2697 | pxor INC, STATE3 | |
c456a9cd JK |
2698 | movdqu IV, 0x20(OUTP) |
2699 | ||
2700 | _aesni_gf128mul_x_ble() | |
2701 | movdqa IV, STATE4 | |
fe6510b5 JK |
2702 | movdqu 0x30(INP), INC |
2703 | pxor INC, STATE4 | |
c456a9cd JK |
2704 | movdqu IV, 0x30(OUTP) |
2705 | ||
2706 | call *%r11 | |
2707 | ||
fe6510b5 JK |
2708 | movdqu 0x00(OUTP), INC |
2709 | pxor INC, STATE1 | |
c456a9cd JK |
2710 | movdqu STATE1, 0x00(OUTP) |
2711 | ||
2712 | _aesni_gf128mul_x_ble() | |
2713 | movdqa IV, STATE1 | |
fe6510b5 JK |
2714 | movdqu 0x40(INP), INC |
2715 | pxor INC, STATE1 | |
c456a9cd JK |
2716 | movdqu IV, 0x40(OUTP) |
2717 | ||
fe6510b5 JK |
2718 | movdqu 0x10(OUTP), INC |
2719 | pxor INC, STATE2 | |
c456a9cd JK |
2720 | movdqu STATE2, 0x10(OUTP) |
2721 | ||
2722 | _aesni_gf128mul_x_ble() | |
2723 | movdqa IV, STATE2 | |
fe6510b5 JK |
2724 | movdqu 0x50(INP), INC |
2725 | pxor INC, STATE2 | |
c456a9cd JK |
2726 | movdqu IV, 0x50(OUTP) |
2727 | ||
fe6510b5 JK |
2728 | movdqu 0x20(OUTP), INC |
2729 | pxor INC, STATE3 | |
c456a9cd JK |
2730 | movdqu STATE3, 0x20(OUTP) |
2731 | ||
2732 | _aesni_gf128mul_x_ble() | |
2733 | movdqa IV, STATE3 | |
fe6510b5 JK |
2734 | movdqu 0x60(INP), INC |
2735 | pxor INC, STATE3 | |
c456a9cd JK |
2736 | movdqu IV, 0x60(OUTP) |
2737 | ||
fe6510b5 JK |
2738 | movdqu 0x30(OUTP), INC |
2739 | pxor INC, STATE4 | |
c456a9cd JK |
2740 | movdqu STATE4, 0x30(OUTP) |
2741 | ||
2742 | _aesni_gf128mul_x_ble() | |
2743 | movdqa IV, STATE4 | |
fe6510b5 JK |
2744 | movdqu 0x70(INP), INC |
2745 | pxor INC, STATE4 | |
c456a9cd JK |
2746 | movdqu IV, 0x70(OUTP) |
2747 | ||
2748 | _aesni_gf128mul_x_ble() | |
2749 | movups IV, (IVP) | |
2750 | ||
2751 | call *%r11 | |
2752 | ||
fe6510b5 JK |
2753 | movdqu 0x40(OUTP), INC |
2754 | pxor INC, STATE1 | |
c456a9cd JK |
2755 | movdqu STATE1, 0x40(OUTP) |
2756 | ||
fe6510b5 JK |
2757 | movdqu 0x50(OUTP), INC |
2758 | pxor INC, STATE2 | |
c456a9cd JK |
2759 | movdqu STATE2, 0x50(OUTP) |
2760 | ||
fe6510b5 JK |
2761 | movdqu 0x60(OUTP), INC |
2762 | pxor INC, STATE3 | |
c456a9cd JK |
2763 | movdqu STATE3, 0x60(OUTP) |
2764 | ||
fe6510b5 JK |
2765 | movdqu 0x70(OUTP), INC |
2766 | pxor INC, STATE4 | |
c456a9cd JK |
2767 | movdqu STATE4, 0x70(OUTP) |
2768 | ||
2769 | ret | |
2770 | ENDPROC(aesni_xts_crypt8) | |
2771 | ||
0d258efb | 2772 | #endif |