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Commit | Line | Data |
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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 | |
e31ac32d TM |
35 | /* |
36 | * The following macros are used to move an (un)aligned 16 byte value to/from | |
37 | * an XMM register. This can done for either FP or integer values, for FP use | |
38 | * movaps (move aligned packed single) or integer use movdqa (move double quad | |
39 | * aligned). It doesn't make a performance difference which instruction is used | |
40 | * since Nehalem (original Core i7) was released. However, the movaps is a byte | |
41 | * shorter, so that is the one we'll use for now. (same for unaligned). | |
42 | */ | |
43 | #define MOVADQ movaps | |
44 | #define MOVUDQ movups | |
45 | ||
559ad0ff | 46 | #ifdef __x86_64__ |
e31ac32d | 47 | |
0bd82f5f | 48 | .data |
c456a9cd JK |
49 | .align 16 |
50 | .Lgf128mul_x_ble_mask: | |
51 | .octa 0x00000000000000010000000000000087 | |
0bd82f5f TS |
52 | POLY: .octa 0xC2000000000000000000000000000001 |
53 | TWOONE: .octa 0x00000001000000000000000000000001 | |
54 | ||
55 | # order of these constants should not change. | |
56 | # more specifically, ALL_F should follow SHIFT_MASK, | |
57 | # and ZERO should follow ALL_F | |
58 | ||
59 | SHUF_MASK: .octa 0x000102030405060708090A0B0C0D0E0F | |
60 | MASK1: .octa 0x0000000000000000ffffffffffffffff | |
61 | MASK2: .octa 0xffffffffffffffff0000000000000000 | |
62 | SHIFT_MASK: .octa 0x0f0e0d0c0b0a09080706050403020100 | |
63 | ALL_F: .octa 0xffffffffffffffffffffffffffffffff | |
64 | ZERO: .octa 0x00000000000000000000000000000000 | |
65 | ONE: .octa 0x00000000000000000000000000000001 | |
66 | F_MIN_MASK: .octa 0xf1f2f3f4f5f6f7f8f9fafbfcfdfeff0 | |
67 | dec: .octa 0x1 | |
68 | enc: .octa 0x2 | |
69 | ||
70 | ||
54b6a1bd HY |
71 | .text |
72 | ||
0bd82f5f TS |
73 | |
74 | #define STACK_OFFSET 8*3 | |
75 | #define HashKey 16*0 // store HashKey <<1 mod poly here | |
76 | #define HashKey_2 16*1 // store HashKey^2 <<1 mod poly here | |
77 | #define HashKey_3 16*2 // store HashKey^3 <<1 mod poly here | |
78 | #define HashKey_4 16*3 // store HashKey^4 <<1 mod poly here | |
79 | #define HashKey_k 16*4 // store XOR of High 64 bits and Low 64 | |
80 | // bits of HashKey <<1 mod poly here | |
81 | //(for Karatsuba purposes) | |
82 | #define HashKey_2_k 16*5 // store XOR of High 64 bits and Low 64 | |
83 | // bits of HashKey^2 <<1 mod poly here | |
84 | // (for Karatsuba purposes) | |
85 | #define HashKey_3_k 16*6 // store XOR of High 64 bits and Low 64 | |
86 | // bits of HashKey^3 <<1 mod poly here | |
87 | // (for Karatsuba purposes) | |
88 | #define HashKey_4_k 16*7 // store XOR of High 64 bits and Low 64 | |
89 | // bits of HashKey^4 <<1 mod poly here | |
90 | // (for Karatsuba purposes) | |
91 | #define VARIABLE_OFFSET 16*8 | |
92 | ||
93 | #define arg1 rdi | |
94 | #define arg2 rsi | |
95 | #define arg3 rdx | |
96 | #define arg4 rcx | |
97 | #define arg5 r8 | |
98 | #define arg6 r9 | |
99 | #define arg7 STACK_OFFSET+8(%r14) | |
100 | #define arg8 STACK_OFFSET+16(%r14) | |
101 | #define arg9 STACK_OFFSET+24(%r14) | |
102 | #define arg10 STACK_OFFSET+32(%r14) | |
e31ac32d | 103 | #define keysize 2*15*16(%arg1) |
559ad0ff | 104 | #endif |
0bd82f5f TS |
105 | |
106 | ||
54b6a1bd HY |
107 | #define STATE1 %xmm0 |
108 | #define STATE2 %xmm4 | |
109 | #define STATE3 %xmm5 | |
110 | #define STATE4 %xmm6 | |
111 | #define STATE STATE1 | |
112 | #define IN1 %xmm1 | |
113 | #define IN2 %xmm7 | |
114 | #define IN3 %xmm8 | |
115 | #define IN4 %xmm9 | |
116 | #define IN IN1 | |
117 | #define KEY %xmm2 | |
118 | #define IV %xmm3 | |
0d258efb | 119 | |
12387a46 HY |
120 | #define BSWAP_MASK %xmm10 |
121 | #define CTR %xmm11 | |
122 | #define INC %xmm12 | |
54b6a1bd | 123 | |
c456a9cd JK |
124 | #define GF128MUL_MASK %xmm10 |
125 | ||
0d258efb MK |
126 | #ifdef __x86_64__ |
127 | #define AREG %rax | |
54b6a1bd HY |
128 | #define KEYP %rdi |
129 | #define OUTP %rsi | |
0d258efb | 130 | #define UKEYP OUTP |
54b6a1bd HY |
131 | #define INP %rdx |
132 | #define LEN %rcx | |
133 | #define IVP %r8 | |
134 | #define KLEN %r9d | |
135 | #define T1 %r10 | |
136 | #define TKEYP T1 | |
137 | #define T2 %r11 | |
12387a46 | 138 | #define TCTR_LOW T2 |
0d258efb MK |
139 | #else |
140 | #define AREG %eax | |
141 | #define KEYP %edi | |
142 | #define OUTP AREG | |
143 | #define UKEYP OUTP | |
144 | #define INP %edx | |
145 | #define LEN %esi | |
146 | #define IVP %ebp | |
147 | #define KLEN %ebx | |
148 | #define T1 %ecx | |
149 | #define TKEYP T1 | |
150 | #endif | |
54b6a1bd | 151 | |
0bd82f5f | 152 | |
559ad0ff | 153 | #ifdef __x86_64__ |
0bd82f5f TS |
154 | /* GHASH_MUL MACRO to implement: Data*HashKey mod (128,127,126,121,0) |
155 | * | |
156 | * | |
157 | * Input: A and B (128-bits each, bit-reflected) | |
158 | * Output: C = A*B*x mod poly, (i.e. >>1 ) | |
159 | * To compute GH = GH*HashKey mod poly, give HK = HashKey<<1 mod poly as input | |
160 | * GH = GH * HK * x mod poly which is equivalent to GH*HashKey mod poly. | |
161 | * | |
162 | */ | |
163 | .macro GHASH_MUL GH HK TMP1 TMP2 TMP3 TMP4 TMP5 | |
164 | movdqa \GH, \TMP1 | |
165 | pshufd $78, \GH, \TMP2 | |
166 | pshufd $78, \HK, \TMP3 | |
167 | pxor \GH, \TMP2 # TMP2 = a1+a0 | |
168 | pxor \HK, \TMP3 # TMP3 = b1+b0 | |
169 | PCLMULQDQ 0x11, \HK, \TMP1 # TMP1 = a1*b1 | |
170 | PCLMULQDQ 0x00, \HK, \GH # GH = a0*b0 | |
171 | PCLMULQDQ 0x00, \TMP3, \TMP2 # TMP2 = (a0+a1)*(b1+b0) | |
172 | pxor \GH, \TMP2 | |
173 | pxor \TMP1, \TMP2 # TMP2 = (a0*b0)+(a1*b0) | |
174 | movdqa \TMP2, \TMP3 | |
175 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
176 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
177 | pxor \TMP3, \GH | |
178 | pxor \TMP2, \TMP1 # TMP2:GH holds the result of GH*HK | |
179 | ||
180 | # first phase of the reduction | |
181 | ||
182 | movdqa \GH, \TMP2 | |
183 | movdqa \GH, \TMP3 | |
184 | movdqa \GH, \TMP4 # copy GH into TMP2,TMP3 and TMP4 | |
185 | # in in order to perform | |
186 | # independent shifts | |
187 | pslld $31, \TMP2 # packed right shift <<31 | |
188 | pslld $30, \TMP3 # packed right shift <<30 | |
189 | pslld $25, \TMP4 # packed right shift <<25 | |
190 | pxor \TMP3, \TMP2 # xor the shifted versions | |
191 | pxor \TMP4, \TMP2 | |
192 | movdqa \TMP2, \TMP5 | |
193 | psrldq $4, \TMP5 # right shift TMP5 1 DW | |
194 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
195 | pxor \TMP2, \GH | |
196 | ||
197 | # second phase of the reduction | |
198 | ||
199 | movdqa \GH,\TMP2 # copy GH into TMP2,TMP3 and TMP4 | |
200 | # in in order to perform | |
201 | # independent shifts | |
202 | movdqa \GH,\TMP3 | |
203 | movdqa \GH,\TMP4 | |
204 | psrld $1,\TMP2 # packed left shift >>1 | |
205 | psrld $2,\TMP3 # packed left shift >>2 | |
206 | psrld $7,\TMP4 # packed left shift >>7 | |
207 | pxor \TMP3,\TMP2 # xor the shifted versions | |
208 | pxor \TMP4,\TMP2 | |
209 | pxor \TMP5, \TMP2 | |
210 | pxor \TMP2, \GH | |
211 | pxor \TMP1, \GH # result is in TMP1 | |
212 | .endm | |
213 | ||
214 | /* | |
215 | * if a = number of total plaintext bytes | |
216 | * b = floor(a/16) | |
217 | * num_initial_blocks = b mod 4 | |
218 | * encrypt the initial num_initial_blocks blocks and apply ghash on | |
219 | * the ciphertext | |
220 | * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers | |
221 | * are clobbered | |
222 | * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified | |
223 | */ | |
224 | ||
0bd82f5f | 225 | |
3c097b80 TS |
226 | .macro INITIAL_BLOCKS_DEC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \ |
227 | XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation | |
e31ac32d | 228 | MOVADQ SHUF_MASK(%rip), %xmm14 |
0bd82f5f TS |
229 | mov arg7, %r10 # %r10 = AAD |
230 | mov arg8, %r12 # %r12 = aadLen | |
231 | mov %r12, %r11 | |
232 | pxor %xmm\i, %xmm\i | |
e31ac32d | 233 | |
0bd82f5f TS |
234 | _get_AAD_loop\num_initial_blocks\operation: |
235 | movd (%r10), \TMP1 | |
236 | pslldq $12, \TMP1 | |
237 | psrldq $4, %xmm\i | |
238 | pxor \TMP1, %xmm\i | |
239 | add $4, %r10 | |
240 | sub $4, %r12 | |
241 | jne _get_AAD_loop\num_initial_blocks\operation | |
e31ac32d | 242 | |
0bd82f5f TS |
243 | cmp $16, %r11 |
244 | je _get_AAD_loop2_done\num_initial_blocks\operation | |
e31ac32d | 245 | |
0bd82f5f TS |
246 | mov $16, %r12 |
247 | _get_AAD_loop2\num_initial_blocks\operation: | |
248 | psrldq $4, %xmm\i | |
249 | sub $4, %r12 | |
250 | cmp %r11, %r12 | |
251 | jne _get_AAD_loop2\num_initial_blocks\operation | |
e31ac32d | 252 | |
0bd82f5f | 253 | _get_AAD_loop2_done\num_initial_blocks\operation: |
3c097b80 TS |
254 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data |
255 | ||
0bd82f5f TS |
256 | xor %r11, %r11 # initialise the data pointer offset as zero |
257 | ||
258 | # start AES for num_initial_blocks blocks | |
259 | ||
260 | mov %arg5, %rax # %rax = *Y0 | |
261 | movdqu (%rax), \XMM0 # XMM0 = Y0 | |
3c097b80 TS |
262 | PSHUFB_XMM %xmm14, \XMM0 |
263 | ||
264 | .if (\i == 5) || (\i == 6) || (\i == 7) | |
e31ac32d TM |
265 | MOVADQ ONE(%RIP),\TMP1 |
266 | MOVADQ (%arg1),\TMP2 | |
0bd82f5f | 267 | .irpc index, \i_seq |
e31ac32d | 268 | paddd \TMP1, \XMM0 # INCR Y0 |
0bd82f5f | 269 | movdqa \XMM0, %xmm\index |
3c097b80 | 270 | PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap |
e31ac32d | 271 | pxor \TMP2, %xmm\index |
0bd82f5f | 272 | .endr |
e31ac32d TM |
273 | lea 0x10(%arg1),%r10 |
274 | mov keysize,%eax | |
275 | shr $2,%eax # 128->4, 192->6, 256->8 | |
276 | add $5,%eax # 128->9, 192->11, 256->13 | |
277 | ||
278 | aes_loop_initial_dec\num_initial_blocks: | |
279 | MOVADQ (%r10),\TMP1 | |
280 | .irpc index, \i_seq | |
281 | AESENC \TMP1, %xmm\index | |
0bd82f5f | 282 | .endr |
e31ac32d TM |
283 | add $16,%r10 |
284 | sub $1,%eax | |
285 | jnz aes_loop_initial_dec\num_initial_blocks | |
286 | ||
287 | MOVADQ (%r10), \TMP1 | |
0bd82f5f | 288 | .irpc index, \i_seq |
e31ac32d | 289 | AESENCLAST \TMP1, %xmm\index # Last Round |
0bd82f5f TS |
290 | .endr |
291 | .irpc index, \i_seq | |
292 | movdqu (%arg3 , %r11, 1), \TMP1 | |
293 | pxor \TMP1, %xmm\index | |
294 | movdqu %xmm\index, (%arg2 , %r11, 1) | |
295 | # write back plaintext/ciphertext for num_initial_blocks | |
296 | add $16, %r11 | |
3c097b80 | 297 | |
0bd82f5f | 298 | movdqa \TMP1, %xmm\index |
3c097b80 | 299 | PSHUFB_XMM %xmm14, %xmm\index |
e31ac32d | 300 | # prepare plaintext/ciphertext for GHASH computation |
0bd82f5f TS |
301 | .endr |
302 | .endif | |
303 | GHASH_MUL %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
304 | # apply GHASH on num_initial_blocks blocks | |
305 | ||
306 | .if \i == 5 | |
307 | pxor %xmm5, %xmm6 | |
308 | GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
309 | pxor %xmm6, %xmm7 | |
310 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
311 | pxor %xmm7, %xmm8 | |
312 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
313 | .elseif \i == 6 | |
314 | pxor %xmm6, %xmm7 | |
315 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
316 | pxor %xmm7, %xmm8 | |
317 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
318 | .elseif \i == 7 | |
319 | pxor %xmm7, %xmm8 | |
320 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
321 | .endif | |
322 | cmp $64, %r13 | |
323 | jl _initial_blocks_done\num_initial_blocks\operation | |
324 | # no need for precomputed values | |
325 | /* | |
326 | * | |
327 | * Precomputations for HashKey parallel with encryption of first 4 blocks. | |
328 | * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i | |
329 | */ | |
e31ac32d TM |
330 | MOVADQ ONE(%rip), \TMP1 |
331 | paddd \TMP1, \XMM0 # INCR Y0 | |
332 | MOVADQ \XMM0, \XMM1 | |
3c097b80 TS |
333 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
334 | ||
e31ac32d TM |
335 | paddd \TMP1, \XMM0 # INCR Y0 |
336 | MOVADQ \XMM0, \XMM2 | |
3c097b80 TS |
337 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
338 | ||
e31ac32d TM |
339 | paddd \TMP1, \XMM0 # INCR Y0 |
340 | MOVADQ \XMM0, \XMM3 | |
3c097b80 TS |
341 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
342 | ||
e31ac32d TM |
343 | paddd \TMP1, \XMM0 # INCR Y0 |
344 | MOVADQ \XMM0, \XMM4 | |
3c097b80 TS |
345 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
346 | ||
e31ac32d TM |
347 | MOVADQ 0(%arg1),\TMP1 |
348 | pxor \TMP1, \XMM1 | |
349 | pxor \TMP1, \XMM2 | |
350 | pxor \TMP1, \XMM3 | |
351 | pxor \TMP1, \XMM4 | |
0bd82f5f TS |
352 | movdqa \TMP3, \TMP5 |
353 | pshufd $78, \TMP3, \TMP1 | |
354 | pxor \TMP3, \TMP1 | |
355 | movdqa \TMP1, HashKey_k(%rsp) | |
356 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
357 | # TMP5 = HashKey^2<<1 (mod poly) | |
358 | movdqa \TMP5, HashKey_2(%rsp) | |
359 | # HashKey_2 = HashKey^2<<1 (mod poly) | |
360 | pshufd $78, \TMP5, \TMP1 | |
361 | pxor \TMP5, \TMP1 | |
362 | movdqa \TMP1, HashKey_2_k(%rsp) | |
363 | .irpc index, 1234 # do 4 rounds | |
364 | movaps 0x10*\index(%arg1), \TMP1 | |
365 | AESENC \TMP1, \XMM1 | |
366 | AESENC \TMP1, \XMM2 | |
367 | AESENC \TMP1, \XMM3 | |
368 | AESENC \TMP1, \XMM4 | |
369 | .endr | |
370 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
371 | # TMP5 = HashKey^3<<1 (mod poly) | |
372 | movdqa \TMP5, HashKey_3(%rsp) | |
373 | pshufd $78, \TMP5, \TMP1 | |
374 | pxor \TMP5, \TMP1 | |
375 | movdqa \TMP1, HashKey_3_k(%rsp) | |
376 | .irpc index, 56789 # do next 5 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_4(%rsp) | |
386 | pshufd $78, \TMP5, \TMP1 | |
387 | pxor \TMP5, \TMP1 | |
388 | movdqa \TMP1, HashKey_4_k(%rsp) | |
e31ac32d TM |
389 | lea 0xa0(%arg1),%r10 |
390 | mov keysize,%eax | |
391 | shr $2,%eax # 128->4, 192->6, 256->8 | |
392 | sub $4,%eax # 128->0, 192->2, 256->4 | |
393 | jz aes_loop_pre_dec_done\num_initial_blocks | |
394 | ||
395 | aes_loop_pre_dec\num_initial_blocks: | |
396 | MOVADQ (%r10),\TMP2 | |
397 | .irpc index, 1234 | |
398 | AESENC \TMP2, %xmm\index | |
399 | .endr | |
400 | add $16,%r10 | |
401 | sub $1,%eax | |
402 | jnz aes_loop_pre_dec\num_initial_blocks | |
403 | ||
404 | aes_loop_pre_dec_done\num_initial_blocks: | |
405 | MOVADQ (%r10), \TMP2 | |
0bd82f5f TS |
406 | AESENCLAST \TMP2, \XMM1 |
407 | AESENCLAST \TMP2, \XMM2 | |
408 | AESENCLAST \TMP2, \XMM3 | |
409 | AESENCLAST \TMP2, \XMM4 | |
410 | movdqu 16*0(%arg3 , %r11 , 1), \TMP1 | |
411 | pxor \TMP1, \XMM1 | |
0bd82f5f TS |
412 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) |
413 | movdqa \TMP1, \XMM1 | |
0bd82f5f TS |
414 | movdqu 16*1(%arg3 , %r11 , 1), \TMP1 |
415 | pxor \TMP1, \XMM2 | |
0bd82f5f TS |
416 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) |
417 | movdqa \TMP1, \XMM2 | |
0bd82f5f TS |
418 | movdqu 16*2(%arg3 , %r11 , 1), \TMP1 |
419 | pxor \TMP1, \XMM3 | |
0bd82f5f TS |
420 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) |
421 | movdqa \TMP1, \XMM3 | |
0bd82f5f TS |
422 | movdqu 16*3(%arg3 , %r11 , 1), \TMP1 |
423 | pxor \TMP1, \XMM4 | |
0bd82f5f TS |
424 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) |
425 | movdqa \TMP1, \XMM4 | |
3c097b80 | 426 | add $64, %r11 |
3c097b80 TS |
427 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
428 | pxor \XMMDst, \XMM1 | |
429 | # combine GHASHed value with the corresponding ciphertext | |
3c097b80 | 430 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
3c097b80 | 431 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
3c097b80 TS |
432 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
433 | ||
434 | _initial_blocks_done\num_initial_blocks\operation: | |
435 | ||
436 | .endm | |
437 | ||
438 | ||
439 | /* | |
440 | * if a = number of total plaintext bytes | |
441 | * b = floor(a/16) | |
442 | * num_initial_blocks = b mod 4 | |
443 | * encrypt the initial num_initial_blocks blocks and apply ghash on | |
444 | * the ciphertext | |
445 | * %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers | |
446 | * are clobbered | |
447 | * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified | |
448 | */ | |
449 | ||
450 | ||
451 | .macro INITIAL_BLOCKS_ENC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \ | |
452 | XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation | |
e31ac32d | 453 | MOVADQ SHUF_MASK(%rip), %xmm14 |
3c097b80 TS |
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: | |
3c097b80 TS |
475 | PSHUFB_XMM %xmm14, %xmm\i # byte-reflect the AAD data |
476 | ||
477 | xor %r11, %r11 # initialise the data pointer offset as zero | |
478 | ||
479 | # start AES for num_initial_blocks blocks | |
480 | ||
481 | mov %arg5, %rax # %rax = *Y0 | |
482 | movdqu (%rax), \XMM0 # XMM0 = Y0 | |
3c097b80 TS |
483 | PSHUFB_XMM %xmm14, \XMM0 |
484 | ||
485 | .if (\i == 5) || (\i == 6) || (\i == 7) | |
3c097b80 | 486 | |
e31ac32d TM |
487 | MOVADQ ONE(%RIP),\TMP1 |
488 | MOVADQ 0(%arg1),\TMP2 | |
3c097b80 | 489 | .irpc index, \i_seq |
e31ac32d TM |
490 | paddd \TMP1, \XMM0 # INCR Y0 |
491 | MOVADQ \XMM0, %xmm\index | |
492 | PSHUFB_XMM %xmm14, %xmm\index # perform a 16 byte swap | |
493 | pxor \TMP2, %xmm\index | |
3c097b80 | 494 | .endr |
e31ac32d TM |
495 | lea 0x10(%arg1),%r10 |
496 | mov keysize,%eax | |
497 | shr $2,%eax # 128->4, 192->6, 256->8 | |
498 | add $5,%eax # 128->9, 192->11, 256->13 | |
499 | ||
500 | aes_loop_initial_enc\num_initial_blocks: | |
501 | MOVADQ (%r10),\TMP1 | |
502 | .irpc index, \i_seq | |
503 | AESENC \TMP1, %xmm\index | |
3c097b80 | 504 | .endr |
e31ac32d TM |
505 | add $16,%r10 |
506 | sub $1,%eax | |
507 | jnz aes_loop_initial_enc\num_initial_blocks | |
508 | ||
509 | MOVADQ (%r10), \TMP1 | |
3c097b80 | 510 | .irpc index, \i_seq |
e31ac32d | 511 | AESENCLAST \TMP1, %xmm\index # Last Round |
3c097b80 TS |
512 | .endr |
513 | .irpc index, \i_seq | |
514 | movdqu (%arg3 , %r11, 1), \TMP1 | |
515 | pxor \TMP1, %xmm\index | |
516 | movdqu %xmm\index, (%arg2 , %r11, 1) | |
517 | # write back plaintext/ciphertext for num_initial_blocks | |
518 | add $16, %r11 | |
3c097b80 TS |
519 | PSHUFB_XMM %xmm14, %xmm\index |
520 | ||
521 | # prepare plaintext/ciphertext for GHASH computation | |
522 | .endr | |
523 | .endif | |
524 | GHASH_MUL %xmm\i, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
525 | # apply GHASH on num_initial_blocks blocks | |
526 | ||
527 | .if \i == 5 | |
528 | pxor %xmm5, %xmm6 | |
529 | GHASH_MUL %xmm6, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
530 | pxor %xmm6, %xmm7 | |
531 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
532 | pxor %xmm7, %xmm8 | |
533 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
534 | .elseif \i == 6 | |
535 | pxor %xmm6, %xmm7 | |
536 | GHASH_MUL %xmm7, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
537 | pxor %xmm7, %xmm8 | |
538 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
539 | .elseif \i == 7 | |
540 | pxor %xmm7, %xmm8 | |
541 | GHASH_MUL %xmm8, \TMP3, \TMP1, \TMP2, \TMP4, \TMP5, \XMM1 | |
542 | .endif | |
543 | cmp $64, %r13 | |
544 | jl _initial_blocks_done\num_initial_blocks\operation | |
545 | # no need for precomputed values | |
546 | /* | |
547 | * | |
548 | * Precomputations for HashKey parallel with encryption of first 4 blocks. | |
549 | * Haskey_i_k holds XORed values of the low and high parts of the Haskey_i | |
550 | */ | |
e31ac32d TM |
551 | MOVADQ ONE(%RIP),\TMP1 |
552 | paddd \TMP1, \XMM0 # INCR Y0 | |
553 | MOVADQ \XMM0, \XMM1 | |
3c097b80 TS |
554 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
555 | ||
e31ac32d TM |
556 | paddd \TMP1, \XMM0 # INCR Y0 |
557 | MOVADQ \XMM0, \XMM2 | |
3c097b80 TS |
558 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
559 | ||
e31ac32d TM |
560 | paddd \TMP1, \XMM0 # INCR Y0 |
561 | MOVADQ \XMM0, \XMM3 | |
3c097b80 TS |
562 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
563 | ||
e31ac32d TM |
564 | paddd \TMP1, \XMM0 # INCR Y0 |
565 | MOVADQ \XMM0, \XMM4 | |
3c097b80 TS |
566 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
567 | ||
e31ac32d TM |
568 | MOVADQ 0(%arg1),\TMP1 |
569 | pxor \TMP1, \XMM1 | |
570 | pxor \TMP1, \XMM2 | |
571 | pxor \TMP1, \XMM3 | |
572 | pxor \TMP1, \XMM4 | |
3c097b80 TS |
573 | movdqa \TMP3, \TMP5 |
574 | pshufd $78, \TMP3, \TMP1 | |
575 | pxor \TMP3, \TMP1 | |
576 | movdqa \TMP1, HashKey_k(%rsp) | |
577 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
578 | # TMP5 = HashKey^2<<1 (mod poly) | |
579 | movdqa \TMP5, HashKey_2(%rsp) | |
580 | # HashKey_2 = HashKey^2<<1 (mod poly) | |
581 | pshufd $78, \TMP5, \TMP1 | |
582 | pxor \TMP5, \TMP1 | |
583 | movdqa \TMP1, HashKey_2_k(%rsp) | |
584 | .irpc index, 1234 # do 4 rounds | |
585 | movaps 0x10*\index(%arg1), \TMP1 | |
586 | AESENC \TMP1, \XMM1 | |
587 | AESENC \TMP1, \XMM2 | |
588 | AESENC \TMP1, \XMM3 | |
589 | AESENC \TMP1, \XMM4 | |
590 | .endr | |
591 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
592 | # TMP5 = HashKey^3<<1 (mod poly) | |
593 | movdqa \TMP5, HashKey_3(%rsp) | |
594 | pshufd $78, \TMP5, \TMP1 | |
595 | pxor \TMP5, \TMP1 | |
596 | movdqa \TMP1, HashKey_3_k(%rsp) | |
597 | .irpc index, 56789 # do next 5 rounds | |
598 | movaps 0x10*\index(%arg1), \TMP1 | |
599 | AESENC \TMP1, \XMM1 | |
600 | AESENC \TMP1, \XMM2 | |
601 | AESENC \TMP1, \XMM3 | |
602 | AESENC \TMP1, \XMM4 | |
603 | .endr | |
604 | GHASH_MUL \TMP5, \TMP3, \TMP1, \TMP2, \TMP4, \TMP6, \TMP7 | |
605 | # TMP5 = HashKey^3<<1 (mod poly) | |
606 | movdqa \TMP5, HashKey_4(%rsp) | |
607 | pshufd $78, \TMP5, \TMP1 | |
608 | pxor \TMP5, \TMP1 | |
609 | movdqa \TMP1, HashKey_4_k(%rsp) | |
e31ac32d TM |
610 | lea 0xa0(%arg1),%r10 |
611 | mov keysize,%eax | |
612 | shr $2,%eax # 128->4, 192->6, 256->8 | |
613 | sub $4,%eax # 128->0, 192->2, 256->4 | |
614 | jz aes_loop_pre_enc_done\num_initial_blocks | |
615 | ||
616 | aes_loop_pre_enc\num_initial_blocks: | |
617 | MOVADQ (%r10),\TMP2 | |
618 | .irpc index, 1234 | |
619 | AESENC \TMP2, %xmm\index | |
620 | .endr | |
621 | add $16,%r10 | |
622 | sub $1,%eax | |
623 | jnz aes_loop_pre_enc\num_initial_blocks | |
624 | ||
625 | aes_loop_pre_enc_done\num_initial_blocks: | |
626 | MOVADQ (%r10), \TMP2 | |
3c097b80 TS |
627 | AESENCLAST \TMP2, \XMM1 |
628 | AESENCLAST \TMP2, \XMM2 | |
629 | AESENCLAST \TMP2, \XMM3 | |
630 | AESENCLAST \TMP2, \XMM4 | |
631 | movdqu 16*0(%arg3 , %r11 , 1), \TMP1 | |
632 | pxor \TMP1, \XMM1 | |
633 | movdqu 16*1(%arg3 , %r11 , 1), \TMP1 | |
634 | pxor \TMP1, \XMM2 | |
635 | movdqu 16*2(%arg3 , %r11 , 1), \TMP1 | |
636 | pxor \TMP1, \XMM3 | |
637 | movdqu 16*3(%arg3 , %r11 , 1), \TMP1 | |
638 | pxor \TMP1, \XMM4 | |
0bd82f5f TS |
639 | movdqu \XMM1, 16*0(%arg2 , %r11 , 1) |
640 | movdqu \XMM2, 16*1(%arg2 , %r11 , 1) | |
641 | movdqu \XMM3, 16*2(%arg2 , %r11 , 1) | |
642 | movdqu \XMM4, 16*3(%arg2 , %r11 , 1) | |
3c097b80 | 643 | |
0bd82f5f | 644 | add $64, %r11 |
3c097b80 | 645 | PSHUFB_XMM %xmm14, \XMM1 # perform a 16 byte swap |
0bd82f5f TS |
646 | pxor \XMMDst, \XMM1 |
647 | # combine GHASHed value with the corresponding ciphertext | |
3c097b80 | 648 | PSHUFB_XMM %xmm14, \XMM2 # perform a 16 byte swap |
3c097b80 | 649 | PSHUFB_XMM %xmm14, \XMM3 # perform a 16 byte swap |
3c097b80 TS |
650 | PSHUFB_XMM %xmm14, \XMM4 # perform a 16 byte swap |
651 | ||
0bd82f5f | 652 | _initial_blocks_done\num_initial_blocks\operation: |
3c097b80 | 653 | |
0bd82f5f TS |
654 | .endm |
655 | ||
656 | /* | |
657 | * encrypt 4 blocks at a time | |
658 | * ghash the 4 previously encrypted ciphertext blocks | |
659 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
660 | * %r11 is the data offset value | |
661 | */ | |
3c097b80 TS |
662 | .macro GHASH_4_ENCRYPT_4_PARALLEL_ENC TMP1 TMP2 TMP3 TMP4 TMP5 \ |
663 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation | |
664 | ||
665 | movdqa \XMM1, \XMM5 | |
666 | movdqa \XMM2, \XMM6 | |
667 | movdqa \XMM3, \XMM7 | |
668 | movdqa \XMM4, \XMM8 | |
669 | ||
670 | movdqa SHUF_MASK(%rip), %xmm15 | |
671 | # multiply TMP5 * HashKey using karatsuba | |
672 | ||
673 | movdqa \XMM5, \TMP4 | |
674 | pshufd $78, \XMM5, \TMP6 | |
675 | pxor \XMM5, \TMP6 | |
676 | paddd ONE(%rip), \XMM0 # INCR CNT | |
677 | movdqa HashKey_4(%rsp), \TMP5 | |
678 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
679 | movdqa \XMM0, \XMM1 | |
680 | paddd ONE(%rip), \XMM0 # INCR CNT | |
681 | movdqa \XMM0, \XMM2 | |
682 | paddd ONE(%rip), \XMM0 # INCR CNT | |
683 | movdqa \XMM0, \XMM3 | |
684 | paddd ONE(%rip), \XMM0 # INCR CNT | |
685 | movdqa \XMM0, \XMM4 | |
686 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
687 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 | |
688 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
689 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
690 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
691 | ||
692 | pxor (%arg1), \XMM1 | |
693 | pxor (%arg1), \XMM2 | |
694 | pxor (%arg1), \XMM3 | |
695 | pxor (%arg1), \XMM4 | |
696 | movdqa HashKey_4_k(%rsp), \TMP5 | |
697 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
698 | movaps 0x10(%arg1), \TMP1 | |
699 | AESENC \TMP1, \XMM1 # Round 1 | |
700 | AESENC \TMP1, \XMM2 | |
701 | AESENC \TMP1, \XMM3 | |
702 | AESENC \TMP1, \XMM4 | |
703 | movaps 0x20(%arg1), \TMP1 | |
704 | AESENC \TMP1, \XMM1 # Round 2 | |
705 | AESENC \TMP1, \XMM2 | |
706 | AESENC \TMP1, \XMM3 | |
707 | AESENC \TMP1, \XMM4 | |
708 | movdqa \XMM6, \TMP1 | |
709 | pshufd $78, \XMM6, \TMP2 | |
710 | pxor \XMM6, \TMP2 | |
711 | movdqa HashKey_3(%rsp), \TMP5 | |
712 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
713 | movaps 0x30(%arg1), \TMP3 | |
714 | AESENC \TMP3, \XMM1 # Round 3 | |
715 | AESENC \TMP3, \XMM2 | |
716 | AESENC \TMP3, \XMM3 | |
717 | AESENC \TMP3, \XMM4 | |
718 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
719 | movaps 0x40(%arg1), \TMP3 | |
720 | AESENC \TMP3, \XMM1 # Round 4 | |
721 | AESENC \TMP3, \XMM2 | |
722 | AESENC \TMP3, \XMM3 | |
723 | AESENC \TMP3, \XMM4 | |
724 | movdqa HashKey_3_k(%rsp), \TMP5 | |
725 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
726 | movaps 0x50(%arg1), \TMP3 | |
727 | AESENC \TMP3, \XMM1 # Round 5 | |
728 | AESENC \TMP3, \XMM2 | |
729 | AESENC \TMP3, \XMM3 | |
730 | AESENC \TMP3, \XMM4 | |
731 | pxor \TMP1, \TMP4 | |
732 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
733 | pxor \XMM6, \XMM5 | |
734 | pxor \TMP2, \TMP6 | |
735 | movdqa \XMM7, \TMP1 | |
736 | pshufd $78, \XMM7, \TMP2 | |
737 | pxor \XMM7, \TMP2 | |
738 | movdqa HashKey_2(%rsp ), \TMP5 | |
739 | ||
740 | # Multiply TMP5 * HashKey using karatsuba | |
741 | ||
742 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
743 | movaps 0x60(%arg1), \TMP3 | |
744 | AESENC \TMP3, \XMM1 # Round 6 | |
745 | AESENC \TMP3, \XMM2 | |
746 | AESENC \TMP3, \XMM3 | |
747 | AESENC \TMP3, \XMM4 | |
748 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
749 | movaps 0x70(%arg1), \TMP3 | |
750 | AESENC \TMP3, \XMM1 # Round 7 | |
751 | AESENC \TMP3, \XMM2 | |
752 | AESENC \TMP3, \XMM3 | |
753 | AESENC \TMP3, \XMM4 | |
754 | movdqa HashKey_2_k(%rsp), \TMP5 | |
755 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
756 | movaps 0x80(%arg1), \TMP3 | |
757 | AESENC \TMP3, \XMM1 # Round 8 | |
758 | AESENC \TMP3, \XMM2 | |
759 | AESENC \TMP3, \XMM3 | |
760 | AESENC \TMP3, \XMM4 | |
761 | pxor \TMP1, \TMP4 | |
762 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
763 | pxor \XMM7, \XMM5 | |
764 | pxor \TMP2, \TMP6 | |
765 | ||
766 | # Multiply XMM8 * HashKey | |
767 | # XMM8 and TMP5 hold the values for the two operands | |
768 | ||
769 | movdqa \XMM8, \TMP1 | |
770 | pshufd $78, \XMM8, \TMP2 | |
771 | pxor \XMM8, \TMP2 | |
772 | movdqa HashKey(%rsp), \TMP5 | |
773 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
774 | movaps 0x90(%arg1), \TMP3 | |
775 | AESENC \TMP3, \XMM1 # Round 9 | |
776 | AESENC \TMP3, \XMM2 | |
777 | AESENC \TMP3, \XMM3 | |
778 | AESENC \TMP3, \XMM4 | |
779 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
e31ac32d TM |
780 | lea 0xa0(%arg1),%r10 |
781 | mov keysize,%eax | |
782 | shr $2,%eax # 128->4, 192->6, 256->8 | |
783 | sub $4,%eax # 128->0, 192->2, 256->4 | |
784 | jz aes_loop_par_enc_done | |
785 | ||
786 | aes_loop_par_enc: | |
787 | MOVADQ (%r10),\TMP3 | |
788 | .irpc index, 1234 | |
789 | AESENC \TMP3, %xmm\index | |
790 | .endr | |
791 | add $16,%r10 | |
792 | sub $1,%eax | |
793 | jnz aes_loop_par_enc | |
794 | ||
795 | aes_loop_par_enc_done: | |
796 | MOVADQ (%r10), \TMP3 | |
3c097b80 TS |
797 | AESENCLAST \TMP3, \XMM1 # Round 10 |
798 | AESENCLAST \TMP3, \XMM2 | |
799 | AESENCLAST \TMP3, \XMM3 | |
800 | AESENCLAST \TMP3, \XMM4 | |
801 | movdqa HashKey_k(%rsp), \TMP5 | |
802 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
803 | movdqu (%arg3,%r11,1), \TMP3 | |
804 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
805 | movdqu 16(%arg3,%r11,1), \TMP3 | |
806 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
807 | movdqu 32(%arg3,%r11,1), \TMP3 | |
808 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
809 | movdqu 48(%arg3,%r11,1), \TMP3 | |
810 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
811 | movdqu \XMM1, (%arg2,%r11,1) # Write to the ciphertext buffer | |
812 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to the ciphertext buffer | |
813 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to the ciphertext buffer | |
814 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to the ciphertext buffer | |
815 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap | |
816 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
817 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
818 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
819 | ||
820 | pxor \TMP4, \TMP1 | |
821 | pxor \XMM8, \XMM5 | |
822 | pxor \TMP6, \TMP2 | |
823 | pxor \TMP1, \TMP2 | |
824 | pxor \XMM5, \TMP2 | |
825 | movdqa \TMP2, \TMP3 | |
826 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
827 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
828 | pxor \TMP3, \XMM5 | |
829 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
830 | ||
831 | # first phase of reduction | |
832 | ||
833 | movdqa \XMM5, \TMP2 | |
834 | movdqa \XMM5, \TMP3 | |
835 | movdqa \XMM5, \TMP4 | |
836 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
837 | pslld $31, \TMP2 # packed right shift << 31 | |
838 | pslld $30, \TMP3 # packed right shift << 30 | |
839 | pslld $25, \TMP4 # packed right shift << 25 | |
840 | pxor \TMP3, \TMP2 # xor the shifted versions | |
841 | pxor \TMP4, \TMP2 | |
842 | movdqa \TMP2, \TMP5 | |
843 | psrldq $4, \TMP5 # right shift T5 1 DW | |
844 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
845 | pxor \TMP2, \XMM5 | |
846 | ||
847 | # second phase of reduction | |
848 | ||
849 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
850 | movdqa \XMM5,\TMP3 | |
851 | movdqa \XMM5,\TMP4 | |
852 | psrld $1, \TMP2 # packed left shift >>1 | |
853 | psrld $2, \TMP3 # packed left shift >>2 | |
854 | psrld $7, \TMP4 # packed left shift >>7 | |
855 | pxor \TMP3,\TMP2 # xor the shifted versions | |
856 | pxor \TMP4,\TMP2 | |
857 | pxor \TMP5, \TMP2 | |
858 | pxor \TMP2, \XMM5 | |
859 | pxor \TMP1, \XMM5 # result is in TMP1 | |
860 | ||
861 | pxor \XMM5, \XMM1 | |
862 | .endm | |
863 | ||
864 | /* | |
865 | * decrypt 4 blocks at a time | |
866 | * ghash the 4 previously decrypted ciphertext blocks | |
867 | * arg1, %arg2, %arg3 are used as pointers only, not modified | |
868 | * %r11 is the data offset value | |
869 | */ | |
870 | .macro GHASH_4_ENCRYPT_4_PARALLEL_DEC TMP1 TMP2 TMP3 TMP4 TMP5 \ | |
0bd82f5f TS |
871 | TMP6 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 operation |
872 | ||
873 | movdqa \XMM1, \XMM5 | |
874 | movdqa \XMM2, \XMM6 | |
875 | movdqa \XMM3, \XMM7 | |
876 | movdqa \XMM4, \XMM8 | |
877 | ||
3c097b80 | 878 | movdqa SHUF_MASK(%rip), %xmm15 |
0bd82f5f TS |
879 | # multiply TMP5 * HashKey using karatsuba |
880 | ||
881 | movdqa \XMM5, \TMP4 | |
882 | pshufd $78, \XMM5, \TMP6 | |
883 | pxor \XMM5, \TMP6 | |
884 | paddd ONE(%rip), \XMM0 # INCR CNT | |
885 | movdqa HashKey_4(%rsp), \TMP5 | |
886 | PCLMULQDQ 0x11, \TMP5, \TMP4 # TMP4 = a1*b1 | |
887 | movdqa \XMM0, \XMM1 | |
888 | paddd ONE(%rip), \XMM0 # INCR CNT | |
889 | movdqa \XMM0, \XMM2 | |
890 | paddd ONE(%rip), \XMM0 # INCR CNT | |
891 | movdqa \XMM0, \XMM3 | |
892 | paddd ONE(%rip), \XMM0 # INCR CNT | |
893 | movdqa \XMM0, \XMM4 | |
3c097b80 | 894 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
0bd82f5f | 895 | PCLMULQDQ 0x00, \TMP5, \XMM5 # XMM5 = a0*b0 |
3c097b80 TS |
896 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap |
897 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
898 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
899 | ||
0bd82f5f TS |
900 | pxor (%arg1), \XMM1 |
901 | pxor (%arg1), \XMM2 | |
902 | pxor (%arg1), \XMM3 | |
903 | pxor (%arg1), \XMM4 | |
904 | movdqa HashKey_4_k(%rsp), \TMP5 | |
905 | PCLMULQDQ 0x00, \TMP5, \TMP6 # TMP6 = (a1+a0)*(b1+b0) | |
906 | movaps 0x10(%arg1), \TMP1 | |
907 | AESENC \TMP1, \XMM1 # Round 1 | |
908 | AESENC \TMP1, \XMM2 | |
909 | AESENC \TMP1, \XMM3 | |
910 | AESENC \TMP1, \XMM4 | |
911 | movaps 0x20(%arg1), \TMP1 | |
912 | AESENC \TMP1, \XMM1 # Round 2 | |
913 | AESENC \TMP1, \XMM2 | |
914 | AESENC \TMP1, \XMM3 | |
915 | AESENC \TMP1, \XMM4 | |
916 | movdqa \XMM6, \TMP1 | |
917 | pshufd $78, \XMM6, \TMP2 | |
918 | pxor \XMM6, \TMP2 | |
919 | movdqa HashKey_3(%rsp), \TMP5 | |
920 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1 * b1 | |
921 | movaps 0x30(%arg1), \TMP3 | |
922 | AESENC \TMP3, \XMM1 # Round 3 | |
923 | AESENC \TMP3, \XMM2 | |
924 | AESENC \TMP3, \XMM3 | |
925 | AESENC \TMP3, \XMM4 | |
926 | PCLMULQDQ 0x00, \TMP5, \XMM6 # XMM6 = a0*b0 | |
927 | movaps 0x40(%arg1), \TMP3 | |
928 | AESENC \TMP3, \XMM1 # Round 4 | |
929 | AESENC \TMP3, \XMM2 | |
930 | AESENC \TMP3, \XMM3 | |
931 | AESENC \TMP3, \XMM4 | |
932 | movdqa HashKey_3_k(%rsp), \TMP5 | |
933 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
934 | movaps 0x50(%arg1), \TMP3 | |
935 | AESENC \TMP3, \XMM1 # Round 5 | |
936 | AESENC \TMP3, \XMM2 | |
937 | AESENC \TMP3, \XMM3 | |
938 | AESENC \TMP3, \XMM4 | |
939 | pxor \TMP1, \TMP4 | |
940 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
941 | pxor \XMM6, \XMM5 | |
942 | pxor \TMP2, \TMP6 | |
943 | movdqa \XMM7, \TMP1 | |
944 | pshufd $78, \XMM7, \TMP2 | |
945 | pxor \XMM7, \TMP2 | |
946 | movdqa HashKey_2(%rsp ), \TMP5 | |
947 | ||
948 | # Multiply TMP5 * HashKey using karatsuba | |
949 | ||
950 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
951 | movaps 0x60(%arg1), \TMP3 | |
952 | AESENC \TMP3, \XMM1 # Round 6 | |
953 | AESENC \TMP3, \XMM2 | |
954 | AESENC \TMP3, \XMM3 | |
955 | AESENC \TMP3, \XMM4 | |
956 | PCLMULQDQ 0x00, \TMP5, \XMM7 # XMM7 = a0*b0 | |
957 | movaps 0x70(%arg1), \TMP3 | |
958 | AESENC \TMP3, \XMM1 # Round 7 | |
959 | AESENC \TMP3, \XMM2 | |
960 | AESENC \TMP3, \XMM3 | |
961 | AESENC \TMP3, \XMM4 | |
962 | movdqa HashKey_2_k(%rsp), \TMP5 | |
963 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
964 | movaps 0x80(%arg1), \TMP3 | |
965 | AESENC \TMP3, \XMM1 # Round 8 | |
966 | AESENC \TMP3, \XMM2 | |
967 | AESENC \TMP3, \XMM3 | |
968 | AESENC \TMP3, \XMM4 | |
969 | pxor \TMP1, \TMP4 | |
970 | # accumulate the results in TMP4:XMM5, TMP6 holds the middle part | |
971 | pxor \XMM7, \XMM5 | |
972 | pxor \TMP2, \TMP6 | |
973 | ||
974 | # Multiply XMM8 * HashKey | |
975 | # XMM8 and TMP5 hold the values for the two operands | |
976 | ||
977 | movdqa \XMM8, \TMP1 | |
978 | pshufd $78, \XMM8, \TMP2 | |
979 | pxor \XMM8, \TMP2 | |
980 | movdqa HashKey(%rsp), \TMP5 | |
981 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
982 | movaps 0x90(%arg1), \TMP3 | |
983 | AESENC \TMP3, \XMM1 # Round 9 | |
984 | AESENC \TMP3, \XMM2 | |
985 | AESENC \TMP3, \XMM3 | |
986 | AESENC \TMP3, \XMM4 | |
987 | PCLMULQDQ 0x00, \TMP5, \XMM8 # XMM8 = a0*b0 | |
e31ac32d TM |
988 | lea 0xa0(%arg1),%r10 |
989 | mov keysize,%eax | |
990 | shr $2,%eax # 128->4, 192->6, 256->8 | |
991 | sub $4,%eax # 128->0, 192->2, 256->4 | |
992 | jz aes_loop_par_dec_done | |
993 | ||
994 | aes_loop_par_dec: | |
995 | MOVADQ (%r10),\TMP3 | |
996 | .irpc index, 1234 | |
997 | AESENC \TMP3, %xmm\index | |
998 | .endr | |
999 | add $16,%r10 | |
1000 | sub $1,%eax | |
1001 | jnz aes_loop_par_dec | |
1002 | ||
1003 | aes_loop_par_dec_done: | |
1004 | MOVADQ (%r10), \TMP3 | |
1005 | AESENCLAST \TMP3, \XMM1 # last round | |
0bd82f5f TS |
1006 | AESENCLAST \TMP3, \XMM2 |
1007 | AESENCLAST \TMP3, \XMM3 | |
1008 | AESENCLAST \TMP3, \XMM4 | |
1009 | movdqa HashKey_k(%rsp), \TMP5 | |
1010 | PCLMULQDQ 0x00, \TMP5, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1011 | movdqu (%arg3,%r11,1), \TMP3 | |
1012 | pxor \TMP3, \XMM1 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1013 | movdqu \XMM1, (%arg2,%r11,1) # Write to plaintext buffer |
1014 | movdqa \TMP3, \XMM1 | |
0bd82f5f TS |
1015 | movdqu 16(%arg3,%r11,1), \TMP3 |
1016 | pxor \TMP3, \XMM2 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1017 | movdqu \XMM2, 16(%arg2,%r11,1) # Write to plaintext buffer |
1018 | movdqa \TMP3, \XMM2 | |
0bd82f5f TS |
1019 | movdqu 32(%arg3,%r11,1), \TMP3 |
1020 | pxor \TMP3, \XMM3 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1021 | movdqu \XMM3, 32(%arg2,%r11,1) # Write to plaintext buffer |
1022 | movdqa \TMP3, \XMM3 | |
0bd82f5f TS |
1023 | movdqu 48(%arg3,%r11,1), \TMP3 |
1024 | pxor \TMP3, \XMM4 # Ciphertext/Plaintext XOR EK | |
0bd82f5f TS |
1025 | movdqu \XMM4, 48(%arg2,%r11,1) # Write to plaintext buffer |
1026 | movdqa \TMP3, \XMM4 | |
3c097b80 TS |
1027 | PSHUFB_XMM %xmm15, \XMM1 # perform a 16 byte swap |
1028 | PSHUFB_XMM %xmm15, \XMM2 # perform a 16 byte swap | |
1029 | PSHUFB_XMM %xmm15, \XMM3 # perform a 16 byte swap | |
1030 | PSHUFB_XMM %xmm15, \XMM4 # perform a 16 byte swap | |
0bd82f5f TS |
1031 | |
1032 | pxor \TMP4, \TMP1 | |
1033 | pxor \XMM8, \XMM5 | |
1034 | pxor \TMP6, \TMP2 | |
1035 | pxor \TMP1, \TMP2 | |
1036 | pxor \XMM5, \TMP2 | |
1037 | movdqa \TMP2, \TMP3 | |
1038 | pslldq $8, \TMP3 # left shift TMP3 2 DWs | |
1039 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
1040 | pxor \TMP3, \XMM5 | |
1041 | pxor \TMP2, \TMP1 # accumulate the results in TMP1:XMM5 | |
1042 | ||
1043 | # first phase of reduction | |
1044 | ||
1045 | movdqa \XMM5, \TMP2 | |
1046 | movdqa \XMM5, \TMP3 | |
1047 | movdqa \XMM5, \TMP4 | |
1048 | # move XMM5 into TMP2, TMP3, TMP4 in order to perform shifts independently | |
1049 | pslld $31, \TMP2 # packed right shift << 31 | |
1050 | pslld $30, \TMP3 # packed right shift << 30 | |
1051 | pslld $25, \TMP4 # packed right shift << 25 | |
1052 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1053 | pxor \TMP4, \TMP2 | |
1054 | movdqa \TMP2, \TMP5 | |
1055 | psrldq $4, \TMP5 # right shift T5 1 DW | |
1056 | pslldq $12, \TMP2 # left shift T2 3 DWs | |
1057 | pxor \TMP2, \XMM5 | |
1058 | ||
1059 | # second phase of reduction | |
1060 | ||
1061 | movdqa \XMM5,\TMP2 # make 3 copies of XMM5 into TMP2, TMP3, TMP4 | |
1062 | movdqa \XMM5,\TMP3 | |
1063 | movdqa \XMM5,\TMP4 | |
1064 | psrld $1, \TMP2 # packed left shift >>1 | |
1065 | psrld $2, \TMP3 # packed left shift >>2 | |
1066 | psrld $7, \TMP4 # packed left shift >>7 | |
1067 | pxor \TMP3,\TMP2 # xor the shifted versions | |
1068 | pxor \TMP4,\TMP2 | |
1069 | pxor \TMP5, \TMP2 | |
1070 | pxor \TMP2, \XMM5 | |
1071 | pxor \TMP1, \XMM5 # result is in TMP1 | |
1072 | ||
1073 | pxor \XMM5, \XMM1 | |
1074 | .endm | |
1075 | ||
1076 | /* GHASH the last 4 ciphertext blocks. */ | |
1077 | .macro GHASH_LAST_4 TMP1 TMP2 TMP3 TMP4 TMP5 TMP6 \ | |
1078 | TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst | |
1079 | ||
1080 | # Multiply TMP6 * HashKey (using Karatsuba) | |
1081 | ||
1082 | movdqa \XMM1, \TMP6 | |
1083 | pshufd $78, \XMM1, \TMP2 | |
1084 | pxor \XMM1, \TMP2 | |
1085 | movdqa HashKey_4(%rsp), \TMP5 | |
1086 | PCLMULQDQ 0x11, \TMP5, \TMP6 # TMP6 = a1*b1 | |
1087 | PCLMULQDQ 0x00, \TMP5, \XMM1 # XMM1 = a0*b0 | |
1088 | movdqa HashKey_4_k(%rsp), \TMP4 | |
1089 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1090 | movdqa \XMM1, \XMMDst | |
1091 | movdqa \TMP2, \XMM1 # result in TMP6, XMMDst, XMM1 | |
1092 | ||
1093 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1094 | ||
1095 | movdqa \XMM2, \TMP1 | |
1096 | pshufd $78, \XMM2, \TMP2 | |
1097 | pxor \XMM2, \TMP2 | |
1098 | movdqa HashKey_3(%rsp), \TMP5 | |
1099 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1100 | PCLMULQDQ 0x00, \TMP5, \XMM2 # XMM2 = a0*b0 | |
1101 | movdqa HashKey_3_k(%rsp), \TMP4 | |
1102 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1103 | pxor \TMP1, \TMP6 | |
1104 | pxor \XMM2, \XMMDst | |
1105 | pxor \TMP2, \XMM1 | |
1106 | # results accumulated in TMP6, XMMDst, XMM1 | |
1107 | ||
1108 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1109 | ||
1110 | movdqa \XMM3, \TMP1 | |
1111 | pshufd $78, \XMM3, \TMP2 | |
1112 | pxor \XMM3, \TMP2 | |
1113 | movdqa HashKey_2(%rsp), \TMP5 | |
1114 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1115 | PCLMULQDQ 0x00, \TMP5, \XMM3 # XMM3 = a0*b0 | |
1116 | movdqa HashKey_2_k(%rsp), \TMP4 | |
1117 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1118 | pxor \TMP1, \TMP6 | |
1119 | pxor \XMM3, \XMMDst | |
1120 | pxor \TMP2, \XMM1 # results accumulated in TMP6, XMMDst, XMM1 | |
1121 | ||
1122 | # Multiply TMP1 * HashKey (using Karatsuba) | |
1123 | movdqa \XMM4, \TMP1 | |
1124 | pshufd $78, \XMM4, \TMP2 | |
1125 | pxor \XMM4, \TMP2 | |
1126 | movdqa HashKey(%rsp), \TMP5 | |
1127 | PCLMULQDQ 0x11, \TMP5, \TMP1 # TMP1 = a1*b1 | |
1128 | PCLMULQDQ 0x00, \TMP5, \XMM4 # XMM4 = a0*b0 | |
1129 | movdqa HashKey_k(%rsp), \TMP4 | |
1130 | PCLMULQDQ 0x00, \TMP4, \TMP2 # TMP2 = (a1+a0)*(b1+b0) | |
1131 | pxor \TMP1, \TMP6 | |
1132 | pxor \XMM4, \XMMDst | |
1133 | pxor \XMM1, \TMP2 | |
1134 | pxor \TMP6, \TMP2 | |
1135 | pxor \XMMDst, \TMP2 | |
1136 | # middle section of the temp results combined as in karatsuba algorithm | |
1137 | movdqa \TMP2, \TMP4 | |
1138 | pslldq $8, \TMP4 # left shift TMP4 2 DWs | |
1139 | psrldq $8, \TMP2 # right shift TMP2 2 DWs | |
1140 | pxor \TMP4, \XMMDst | |
1141 | pxor \TMP2, \TMP6 | |
1142 | # TMP6:XMMDst holds the result of the accumulated carry-less multiplications | |
1143 | # first phase of the reduction | |
1144 | movdqa \XMMDst, \TMP2 | |
1145 | movdqa \XMMDst, \TMP3 | |
1146 | movdqa \XMMDst, \TMP4 | |
1147 | # move XMMDst into TMP2, TMP3, TMP4 in order to perform 3 shifts independently | |
1148 | pslld $31, \TMP2 # packed right shifting << 31 | |
1149 | pslld $30, \TMP3 # packed right shifting << 30 | |
1150 | pslld $25, \TMP4 # packed right shifting << 25 | |
1151 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1152 | pxor \TMP4, \TMP2 | |
1153 | movdqa \TMP2, \TMP7 | |
1154 | psrldq $4, \TMP7 # right shift TMP7 1 DW | |
1155 | pslldq $12, \TMP2 # left shift TMP2 3 DWs | |
1156 | pxor \TMP2, \XMMDst | |
1157 | ||
1158 | # second phase of the reduction | |
1159 | movdqa \XMMDst, \TMP2 | |
1160 | # make 3 copies of XMMDst for doing 3 shift operations | |
1161 | movdqa \XMMDst, \TMP3 | |
1162 | movdqa \XMMDst, \TMP4 | |
1163 | psrld $1, \TMP2 # packed left shift >> 1 | |
1164 | psrld $2, \TMP3 # packed left shift >> 2 | |
1165 | psrld $7, \TMP4 # packed left shift >> 7 | |
1166 | pxor \TMP3, \TMP2 # xor the shifted versions | |
1167 | pxor \TMP4, \TMP2 | |
1168 | pxor \TMP7, \TMP2 | |
1169 | pxor \TMP2, \XMMDst | |
1170 | pxor \TMP6, \XMMDst # reduced result is in XMMDst | |
1171 | .endm | |
1172 | ||
0bd82f5f | 1173 | |
e31ac32d TM |
1174 | /* Encryption of a single block |
1175 | * uses eax & r10 | |
1176 | */ | |
0bd82f5f | 1177 | |
e31ac32d | 1178 | .macro ENCRYPT_SINGLE_BLOCK XMM0 TMP1 |
0bd82f5f | 1179 | |
e31ac32d TM |
1180 | pxor (%arg1), \XMM0 |
1181 | mov keysize,%eax | |
1182 | shr $2,%eax # 128->4, 192->6, 256->8 | |
1183 | add $5,%eax # 128->9, 192->11, 256->13 | |
1184 | lea 16(%arg1), %r10 # get first expanded key address | |
1185 | ||
1186 | _esb_loop_\@: | |
1187 | MOVADQ (%r10),\TMP1 | |
1188 | AESENC \TMP1,\XMM0 | |
1189 | add $16,%r10 | |
1190 | sub $1,%eax | |
1191 | jnz _esb_loop_\@ | |
1192 | ||
1193 | MOVADQ (%r10),\TMP1 | |
1194 | AESENCLAST \TMP1,\XMM0 | |
1195 | .endm | |
0bd82f5f TS |
1196 | /***************************************************************************** |
1197 | * void aesni_gcm_dec(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1198 | * u8 *out, // Plaintext output. Encrypt in-place is allowed. | |
1199 | * const u8 *in, // Ciphertext input | |
1200 | * u64 plaintext_len, // Length of data in bytes for decryption. | |
1201 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1202 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1203 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1204 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1205 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1206 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1207 | * u8 *auth_tag, // Authenticated Tag output. The driver will compare this to the | |
1208 | * // given authentication tag and only return the plaintext if they match. | |
1209 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 | |
1210 | * // (most likely), 12 or 8. | |
1211 | * | |
1212 | * Assumptions: | |
1213 | * | |
1214 | * keys: | |
1215 | * keys are pre-expanded and aligned to 16 bytes. we are using the first | |
1216 | * set of 11 keys in the data structure void *aes_ctx | |
1217 | * | |
1218 | * iv: | |
1219 | * 0 1 2 3 | |
1220 | * 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 | |
1221 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1222 | * | Salt (From the SA) | | |
1223 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1224 | * | Initialization Vector | | |
1225 | * | (This is the sequence number from IPSec header) | | |
1226 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1227 | * | 0x1 | | |
1228 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1229 | * | |
1230 | * | |
1231 | * | |
1232 | * AAD: | |
1233 | * AAD padded to 128 bits with 0 | |
1234 | * for example, assume AAD is a u32 vector | |
1235 | * | |
1236 | * if AAD is 8 bytes: | |
1237 | * AAD[3] = {A0, A1}; | |
1238 | * padded AAD in xmm register = {A1 A0 0 0} | |
1239 | * | |
1240 | * 0 1 2 3 | |
1241 | * 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 | |
1242 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1243 | * | SPI (A1) | | |
1244 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1245 | * | 32-bit Sequence Number (A0) | | |
1246 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1247 | * | 0x0 | | |
1248 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1249 | * | |
1250 | * AAD Format with 32-bit Sequence Number | |
1251 | * | |
1252 | * if AAD is 12 bytes: | |
1253 | * AAD[3] = {A0, A1, A2}; | |
1254 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1255 | * | |
1256 | * 0 1 2 3 | |
1257 | * 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 | |
1258 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1259 | * 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 | |
1260 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1261 | * | SPI (A2) | | |
1262 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1263 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1264 | * | | | |
1265 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1266 | * | 0x0 | | |
1267 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1268 | * | |
1269 | * AAD Format with 64-bit Extended Sequence Number | |
1270 | * | |
1271 | * aadLen: | |
1272 | * from the definition of the spec, aadLen can only be 8 or 12 bytes. | |
1273 | * The code supports 16 too but for other sizes, the code will fail. | |
1274 | * | |
1275 | * TLen: | |
1276 | * from the definition of the spec, TLen can only be 8, 12 or 16 bytes. | |
1277 | * For other sizes, the code will fail. | |
1278 | * | |
1279 | * poly = x^128 + x^127 + x^126 + x^121 + 1 | |
1280 | * | |
1281 | *****************************************************************************/ | |
0bd82f5f TS |
1282 | ENTRY(aesni_gcm_dec) |
1283 | push %r12 | |
1284 | push %r13 | |
1285 | push %r14 | |
1286 | mov %rsp, %r14 | |
1287 | /* | |
1288 | * states of %xmm registers %xmm6:%xmm15 not saved | |
1289 | * all %xmm registers are clobbered | |
1290 | */ | |
1291 | sub $VARIABLE_OFFSET, %rsp | |
1292 | and $~63, %rsp # align rsp to 64 bytes | |
1293 | mov %arg6, %r12 | |
1294 | movdqu (%r12), %xmm13 # %xmm13 = HashKey | |
3c097b80 TS |
1295 | movdqa SHUF_MASK(%rip), %xmm2 |
1296 | PSHUFB_XMM %xmm2, %xmm13 | |
1297 | ||
0bd82f5f TS |
1298 | |
1299 | # Precompute HashKey<<1 (mod poly) from the hash key (required for GHASH) | |
1300 | ||
1301 | movdqa %xmm13, %xmm2 | |
1302 | psllq $1, %xmm13 | |
1303 | psrlq $63, %xmm2 | |
1304 | movdqa %xmm2, %xmm1 | |
1305 | pslldq $8, %xmm2 | |
1306 | psrldq $8, %xmm1 | |
1307 | por %xmm2, %xmm13 | |
1308 | ||
1309 | # Reduction | |
1310 | ||
1311 | pshufd $0x24, %xmm1, %xmm2 | |
1312 | pcmpeqd TWOONE(%rip), %xmm2 | |
1313 | pand POLY(%rip), %xmm2 | |
1314 | pxor %xmm2, %xmm13 # %xmm13 holds the HashKey<<1 (mod poly) | |
1315 | ||
1316 | ||
1317 | # Decrypt first few blocks | |
1318 | ||
1319 | movdqa %xmm13, HashKey(%rsp) # store HashKey<<1 (mod poly) | |
1320 | mov %arg4, %r13 # save the number of bytes of plaintext/ciphertext | |
1321 | and $-16, %r13 # %r13 = %r13 - (%r13 mod 16) | |
1322 | mov %r13, %r12 | |
1323 | and $(3<<4), %r12 | |
1324 | jz _initial_num_blocks_is_0_decrypt | |
1325 | cmp $(2<<4), %r12 | |
1326 | jb _initial_num_blocks_is_1_decrypt | |
1327 | je _initial_num_blocks_is_2_decrypt | |
1328 | _initial_num_blocks_is_3_decrypt: | |
3c097b80 | 1329 | INITIAL_BLOCKS_DEC 3, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1330 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, dec |
1331 | sub $48, %r13 | |
1332 | jmp _initial_blocks_decrypted | |
1333 | _initial_num_blocks_is_2_decrypt: | |
3c097b80 | 1334 | INITIAL_BLOCKS_DEC 2, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1335 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, dec |
1336 | sub $32, %r13 | |
1337 | jmp _initial_blocks_decrypted | |
1338 | _initial_num_blocks_is_1_decrypt: | |
3c097b80 | 1339 | INITIAL_BLOCKS_DEC 1, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1340 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, dec |
1341 | sub $16, %r13 | |
1342 | jmp _initial_blocks_decrypted | |
1343 | _initial_num_blocks_is_0_decrypt: | |
3c097b80 | 1344 | INITIAL_BLOCKS_DEC 0, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1345 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, dec |
1346 | _initial_blocks_decrypted: | |
1347 | cmp $0, %r13 | |
1348 | je _zero_cipher_left_decrypt | |
1349 | sub $64, %r13 | |
1350 | je _four_cipher_left_decrypt | |
1351 | _decrypt_by_4: | |
3c097b80 | 1352 | GHASH_4_ENCRYPT_4_PARALLEL_DEC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1353 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, dec |
1354 | add $64, %r11 | |
1355 | sub $64, %r13 | |
1356 | jne _decrypt_by_4 | |
1357 | _four_cipher_left_decrypt: | |
1358 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1359 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1360 | _zero_cipher_left_decrypt: | |
1361 | mov %arg4, %r13 | |
1362 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1363 | je _multiple_of_16_bytes_decrypt | |
1364 | ||
0d2eb44f | 1365 | # Handle the last <16 byte block separately |
0bd82f5f TS |
1366 | |
1367 | paddd ONE(%rip), %xmm0 # increment CNT to get Yn | |
3c097b80 TS |
1368 | movdqa SHUF_MASK(%rip), %xmm10 |
1369 | PSHUFB_XMM %xmm10, %xmm0 | |
1370 | ||
0bd82f5f TS |
1371 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Yn) |
1372 | sub $16, %r11 | |
1373 | add %r13, %r11 | |
0d2eb44f | 1374 | movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte block |
0bd82f5f TS |
1375 | lea SHIFT_MASK+16(%rip), %r12 |
1376 | sub %r13, %r12 | |
1377 | # adjust the shuffle mask pointer to be able to shift 16-%r13 bytes | |
1378 | # (%r13 is the number of bytes in plaintext mod 16) | |
1379 | movdqu (%r12), %xmm2 # get the appropriate shuffle mask | |
3c097b80 TS |
1380 | PSHUFB_XMM %xmm2, %xmm1 # right shift 16-%r13 butes |
1381 | ||
0bd82f5f TS |
1382 | movdqa %xmm1, %xmm2 |
1383 | pxor %xmm1, %xmm0 # Ciphertext XOR E(K, Yn) | |
1384 | movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 | |
1385 | # get the appropriate mask to mask out top 16-%r13 bytes of %xmm0 | |
1386 | pand %xmm1, %xmm0 # mask out top 16-%r13 bytes of %xmm0 | |
1387 | pand %xmm1, %xmm2 | |
3c097b80 TS |
1388 | movdqa SHUF_MASK(%rip), %xmm10 |
1389 | PSHUFB_XMM %xmm10 ,%xmm2 | |
1390 | ||
0bd82f5f TS |
1391 | pxor %xmm2, %xmm8 |
1392 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1393 | # GHASH computation for the last <16 byte block | |
1394 | sub %r13, %r11 | |
1395 | add $16, %r11 | |
1396 | ||
1397 | # output %r13 bytes | |
3c097b80 | 1398 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1399 | cmp $8, %r13 |
1400 | jle _less_than_8_bytes_left_decrypt | |
1401 | mov %rax, (%arg2 , %r11, 1) | |
1402 | add $8, %r11 | |
1403 | psrldq $8, %xmm0 | |
3c097b80 | 1404 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1405 | sub $8, %r13 |
1406 | _less_than_8_bytes_left_decrypt: | |
1407 | mov %al, (%arg2, %r11, 1) | |
1408 | add $1, %r11 | |
1409 | shr $8, %rax | |
1410 | sub $1, %r13 | |
1411 | jne _less_than_8_bytes_left_decrypt | |
1412 | _multiple_of_16_bytes_decrypt: | |
1413 | mov arg8, %r12 # %r13 = aadLen (number of bytes) | |
1414 | shl $3, %r12 # convert into number of bits | |
1415 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1416 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1417 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1418 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1419 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1420 | pxor %xmm15, %xmm8 | |
1421 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1422 | # final GHASH computation | |
3c097b80 TS |
1423 | movdqa SHUF_MASK(%rip), %xmm10 |
1424 | PSHUFB_XMM %xmm10, %xmm8 | |
1425 | ||
0bd82f5f TS |
1426 | mov %arg5, %rax # %rax = *Y0 |
1427 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1428 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # E(K, Y0) | |
1429 | pxor %xmm8, %xmm0 | |
1430 | _return_T_decrypt: | |
1431 | mov arg9, %r10 # %r10 = authTag | |
1432 | mov arg10, %r11 # %r11 = auth_tag_len | |
1433 | cmp $16, %r11 | |
1434 | je _T_16_decrypt | |
1435 | cmp $12, %r11 | |
1436 | je _T_12_decrypt | |
1437 | _T_8_decrypt: | |
3c097b80 | 1438 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1439 | mov %rax, (%r10) |
1440 | jmp _return_T_done_decrypt | |
1441 | _T_12_decrypt: | |
3c097b80 | 1442 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1443 | mov %rax, (%r10) |
1444 | psrldq $8, %xmm0 | |
1445 | movd %xmm0, %eax | |
1446 | mov %eax, 8(%r10) | |
1447 | jmp _return_T_done_decrypt | |
1448 | _T_16_decrypt: | |
1449 | movdqu %xmm0, (%r10) | |
1450 | _return_T_done_decrypt: | |
1451 | mov %r14, %rsp | |
1452 | pop %r14 | |
1453 | pop %r13 | |
1454 | pop %r12 | |
1455 | ret | |
8309b745 | 1456 | ENDPROC(aesni_gcm_dec) |
0bd82f5f TS |
1457 | |
1458 | ||
1459 | /***************************************************************************** | |
1460 | * void aesni_gcm_enc(void *aes_ctx, // AES Key schedule. Starts on a 16 byte boundary. | |
1461 | * u8 *out, // Ciphertext output. Encrypt in-place is allowed. | |
1462 | * const u8 *in, // Plaintext input | |
1463 | * u64 plaintext_len, // Length of data in bytes for encryption. | |
1464 | * u8 *iv, // Pre-counter block j0: 4 byte salt (from Security Association) | |
1465 | * // concatenated with 8 byte Initialisation Vector (from IPSec ESP Payload) | |
1466 | * // concatenated with 0x00000001. 16-byte aligned pointer. | |
1467 | * u8 *hash_subkey, // H, the Hash sub key input. Data starts on a 16-byte boundary. | |
1468 | * const u8 *aad, // Additional Authentication Data (AAD) | |
1469 | * u64 aad_len, // Length of AAD in bytes. With RFC4106 this is going to be 8 or 12 bytes | |
1470 | * u8 *auth_tag, // Authenticated Tag output. | |
1471 | * u64 auth_tag_len); // Authenticated Tag Length in bytes. Valid values are 16 (most likely), | |
1472 | * // 12 or 8. | |
1473 | * | |
1474 | * Assumptions: | |
1475 | * | |
1476 | * keys: | |
1477 | * keys are pre-expanded and aligned to 16 bytes. we are using the | |
1478 | * first set of 11 keys in the data structure void *aes_ctx | |
1479 | * | |
1480 | * | |
1481 | * iv: | |
1482 | * 0 1 2 3 | |
1483 | * 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 | |
1484 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1485 | * | Salt (From the SA) | | |
1486 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1487 | * | Initialization Vector | | |
1488 | * | (This is the sequence number from IPSec header) | | |
1489 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1490 | * | 0x1 | | |
1491 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1492 | * | |
1493 | * | |
1494 | * | |
1495 | * AAD: | |
1496 | * AAD padded to 128 bits with 0 | |
1497 | * for example, assume AAD is a u32 vector | |
1498 | * | |
1499 | * if AAD is 8 bytes: | |
1500 | * AAD[3] = {A0, A1}; | |
1501 | * padded AAD in xmm register = {A1 A0 0 0} | |
1502 | * | |
1503 | * 0 1 2 3 | |
1504 | * 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 | |
1505 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1506 | * | SPI (A1) | | |
1507 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1508 | * | 32-bit Sequence Number (A0) | | |
1509 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1510 | * | 0x0 | | |
1511 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1512 | * | |
1513 | * AAD Format with 32-bit Sequence Number | |
1514 | * | |
1515 | * if AAD is 12 bytes: | |
1516 | * AAD[3] = {A0, A1, A2}; | |
1517 | * padded AAD in xmm register = {A2 A1 A0 0} | |
1518 | * | |
1519 | * 0 1 2 3 | |
1520 | * 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 | |
1521 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1522 | * | SPI (A2) | | |
1523 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1524 | * | 64-bit Extended Sequence Number {A1,A0} | | |
1525 | * | | | |
1526 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1527 | * | 0x0 | | |
1528 | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
1529 | * | |
1530 | * AAD Format with 64-bit Extended Sequence Number | |
1531 | * | |
1532 | * aadLen: | |
1533 | * from the definition of the spec, aadLen can only be 8 or 12 bytes. | |
1534 | * The code supports 16 too but for other sizes, the code will fail. | |
1535 | * | |
1536 | * TLen: | |
1537 | * from the definition of the spec, TLen can only be 8, 12 or 16 bytes. | |
1538 | * For other sizes, the code will fail. | |
1539 | * | |
1540 | * poly = x^128 + x^127 + x^126 + x^121 + 1 | |
1541 | ***************************************************************************/ | |
1542 | ENTRY(aesni_gcm_enc) | |
1543 | push %r12 | |
1544 | push %r13 | |
1545 | push %r14 | |
1546 | mov %rsp, %r14 | |
1547 | # | |
1548 | # states of %xmm registers %xmm6:%xmm15 not saved | |
1549 | # all %xmm registers are clobbered | |
1550 | # | |
1551 | sub $VARIABLE_OFFSET, %rsp | |
1552 | and $~63, %rsp | |
1553 | mov %arg6, %r12 | |
1554 | movdqu (%r12), %xmm13 | |
3c097b80 TS |
1555 | movdqa SHUF_MASK(%rip), %xmm2 |
1556 | PSHUFB_XMM %xmm2, %xmm13 | |
1557 | ||
0bd82f5f TS |
1558 | |
1559 | # precompute HashKey<<1 mod poly from the HashKey (required for GHASH) | |
1560 | ||
1561 | movdqa %xmm13, %xmm2 | |
1562 | psllq $1, %xmm13 | |
1563 | psrlq $63, %xmm2 | |
1564 | movdqa %xmm2, %xmm1 | |
1565 | pslldq $8, %xmm2 | |
1566 | psrldq $8, %xmm1 | |
1567 | por %xmm2, %xmm13 | |
1568 | ||
1569 | # reduce HashKey<<1 | |
1570 | ||
1571 | pshufd $0x24, %xmm1, %xmm2 | |
1572 | pcmpeqd TWOONE(%rip), %xmm2 | |
1573 | pand POLY(%rip), %xmm2 | |
1574 | pxor %xmm2, %xmm13 | |
1575 | movdqa %xmm13, HashKey(%rsp) | |
1576 | mov %arg4, %r13 # %xmm13 holds HashKey<<1 (mod poly) | |
1577 | and $-16, %r13 | |
1578 | mov %r13, %r12 | |
1579 | ||
1580 | # Encrypt first few blocks | |
1581 | ||
1582 | and $(3<<4), %r12 | |
1583 | jz _initial_num_blocks_is_0_encrypt | |
1584 | cmp $(2<<4), %r12 | |
1585 | jb _initial_num_blocks_is_1_encrypt | |
1586 | je _initial_num_blocks_is_2_encrypt | |
1587 | _initial_num_blocks_is_3_encrypt: | |
3c097b80 | 1588 | INITIAL_BLOCKS_ENC 3, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1589 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 5, 678, enc |
1590 | sub $48, %r13 | |
1591 | jmp _initial_blocks_encrypted | |
1592 | _initial_num_blocks_is_2_encrypt: | |
3c097b80 | 1593 | INITIAL_BLOCKS_ENC 2, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1594 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 6, 78, enc |
1595 | sub $32, %r13 | |
1596 | jmp _initial_blocks_encrypted | |
1597 | _initial_num_blocks_is_1_encrypt: | |
3c097b80 | 1598 | INITIAL_BLOCKS_ENC 1, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1599 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 7, 8, enc |
1600 | sub $16, %r13 | |
1601 | jmp _initial_blocks_encrypted | |
1602 | _initial_num_blocks_is_0_encrypt: | |
3c097b80 | 1603 | INITIAL_BLOCKS_ENC 0, %xmm9, %xmm10, %xmm13, %xmm11, %xmm12, %xmm0, \ |
0bd82f5f TS |
1604 | %xmm1, %xmm2, %xmm3, %xmm4, %xmm8, %xmm5, %xmm6, 8, 0, enc |
1605 | _initial_blocks_encrypted: | |
1606 | ||
1607 | # Main loop - Encrypt remaining blocks | |
1608 | ||
1609 | cmp $0, %r13 | |
1610 | je _zero_cipher_left_encrypt | |
1611 | sub $64, %r13 | |
1612 | je _four_cipher_left_encrypt | |
1613 | _encrypt_by_4_encrypt: | |
3c097b80 | 1614 | GHASH_4_ENCRYPT_4_PARALLEL_ENC %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, \ |
0bd82f5f TS |
1615 | %xmm14, %xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7, %xmm8, enc |
1616 | add $64, %r11 | |
1617 | sub $64, %r13 | |
1618 | jne _encrypt_by_4_encrypt | |
1619 | _four_cipher_left_encrypt: | |
1620 | GHASH_LAST_4 %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, \ | |
1621 | %xmm15, %xmm1, %xmm2, %xmm3, %xmm4, %xmm8 | |
1622 | _zero_cipher_left_encrypt: | |
1623 | mov %arg4, %r13 | |
1624 | and $15, %r13 # %r13 = arg4 (mod 16) | |
1625 | je _multiple_of_16_bytes_encrypt | |
1626 | ||
0d2eb44f | 1627 | # Handle the last <16 Byte block separately |
0bd82f5f | 1628 | paddd ONE(%rip), %xmm0 # INCR CNT to get Yn |
3c097b80 TS |
1629 | movdqa SHUF_MASK(%rip), %xmm10 |
1630 | PSHUFB_XMM %xmm10, %xmm0 | |
1631 | ||
60af520c | 1632 | |
0bd82f5f TS |
1633 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn) |
1634 | sub $16, %r11 | |
1635 | add %r13, %r11 | |
1636 | movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte blocks | |
1637 | lea SHIFT_MASK+16(%rip), %r12 | |
1638 | sub %r13, %r12 | |
1639 | # adjust the shuffle mask pointer to be able to shift 16-r13 bytes | |
1640 | # (%r13 is the number of bytes in plaintext mod 16) | |
1641 | movdqu (%r12), %xmm2 # get the appropriate shuffle mask | |
3c097b80 | 1642 | PSHUFB_XMM %xmm2, %xmm1 # shift right 16-r13 byte |
0bd82f5f TS |
1643 | pxor %xmm1, %xmm0 # Plaintext XOR Encrypt(K, Yn) |
1644 | movdqu ALL_F-SHIFT_MASK(%r12), %xmm1 | |
1645 | # get the appropriate mask to mask out top 16-r13 bytes of xmm0 | |
1646 | pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0 | |
3c097b80 TS |
1647 | movdqa SHUF_MASK(%rip), %xmm10 |
1648 | PSHUFB_XMM %xmm10,%xmm0 | |
0bd82f5f | 1649 | |
0bd82f5f TS |
1650 | pxor %xmm0, %xmm8 |
1651 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1652 | # GHASH computation for the last <16 byte block | |
1653 | sub %r13, %r11 | |
1654 | add $16, %r11 | |
60af520c TS |
1655 | |
1656 | movdqa SHUF_MASK(%rip), %xmm10 | |
1657 | PSHUFB_XMM %xmm10, %xmm0 | |
3c097b80 | 1658 | |
0bd82f5f TS |
1659 | # shuffle xmm0 back to output as ciphertext |
1660 | ||
1661 | # Output %r13 bytes | |
3c097b80 | 1662 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1663 | cmp $8, %r13 |
1664 | jle _less_than_8_bytes_left_encrypt | |
1665 | mov %rax, (%arg2 , %r11, 1) | |
1666 | add $8, %r11 | |
1667 | psrldq $8, %xmm0 | |
3c097b80 | 1668 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1669 | sub $8, %r13 |
1670 | _less_than_8_bytes_left_encrypt: | |
1671 | mov %al, (%arg2, %r11, 1) | |
1672 | add $1, %r11 | |
1673 | shr $8, %rax | |
1674 | sub $1, %r13 | |
1675 | jne _less_than_8_bytes_left_encrypt | |
1676 | _multiple_of_16_bytes_encrypt: | |
1677 | mov arg8, %r12 # %r12 = addLen (number of bytes) | |
1678 | shl $3, %r12 | |
1679 | movd %r12d, %xmm15 # len(A) in %xmm15 | |
1680 | shl $3, %arg4 # len(C) in bits (*128) | |
3c097b80 | 1681 | MOVQ_R64_XMM %arg4, %xmm1 |
0bd82f5f TS |
1682 | pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000 |
1683 | pxor %xmm1, %xmm15 # %xmm15 = len(A)||len(C) | |
1684 | pxor %xmm15, %xmm8 | |
1685 | GHASH_MUL %xmm8, %xmm13, %xmm9, %xmm10, %xmm11, %xmm5, %xmm6 | |
1686 | # final GHASH computation | |
3c097b80 TS |
1687 | movdqa SHUF_MASK(%rip), %xmm10 |
1688 | PSHUFB_XMM %xmm10, %xmm8 # perform a 16 byte swap | |
0bd82f5f | 1689 | |
0bd82f5f TS |
1690 | mov %arg5, %rax # %rax = *Y0 |
1691 | movdqu (%rax), %xmm0 # %xmm0 = Y0 | |
1692 | ENCRYPT_SINGLE_BLOCK %xmm0, %xmm15 # Encrypt(K, Y0) | |
1693 | pxor %xmm8, %xmm0 | |
1694 | _return_T_encrypt: | |
1695 | mov arg9, %r10 # %r10 = authTag | |
1696 | mov arg10, %r11 # %r11 = auth_tag_len | |
1697 | cmp $16, %r11 | |
1698 | je _T_16_encrypt | |
1699 | cmp $12, %r11 | |
1700 | je _T_12_encrypt | |
1701 | _T_8_encrypt: | |
3c097b80 | 1702 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1703 | mov %rax, (%r10) |
1704 | jmp _return_T_done_encrypt | |
1705 | _T_12_encrypt: | |
3c097b80 | 1706 | MOVQ_R64_XMM %xmm0, %rax |
0bd82f5f TS |
1707 | mov %rax, (%r10) |
1708 | psrldq $8, %xmm0 | |
1709 | movd %xmm0, %eax | |
1710 | mov %eax, 8(%r10) | |
1711 | jmp _return_T_done_encrypt | |
1712 | _T_16_encrypt: | |
1713 | movdqu %xmm0, (%r10) | |
1714 | _return_T_done_encrypt: | |
1715 | mov %r14, %rsp | |
1716 | pop %r14 | |
1717 | pop %r13 | |
1718 | pop %r12 | |
1719 | ret | |
8309b745 | 1720 | ENDPROC(aesni_gcm_enc) |
3c097b80 | 1721 | |
559ad0ff | 1722 | #endif |
0bd82f5f TS |
1723 | |
1724 | ||
8309b745 | 1725 | .align 4 |
54b6a1bd HY |
1726 | _key_expansion_128: |
1727 | _key_expansion_256a: | |
1728 | pshufd $0b11111111, %xmm1, %xmm1 | |
1729 | shufps $0b00010000, %xmm0, %xmm4 | |
1730 | pxor %xmm4, %xmm0 | |
1731 | shufps $0b10001100, %xmm0, %xmm4 | |
1732 | pxor %xmm4, %xmm0 | |
1733 | pxor %xmm1, %xmm0 | |
0d258efb MK |
1734 | movaps %xmm0, (TKEYP) |
1735 | add $0x10, TKEYP | |
54b6a1bd | 1736 | ret |
8309b745 JK |
1737 | ENDPROC(_key_expansion_128) |
1738 | ENDPROC(_key_expansion_256a) | |
54b6a1bd | 1739 | |
0d258efb | 1740 | .align 4 |
54b6a1bd HY |
1741 | _key_expansion_192a: |
1742 | pshufd $0b01010101, %xmm1, %xmm1 | |
1743 | shufps $0b00010000, %xmm0, %xmm4 | |
1744 | pxor %xmm4, %xmm0 | |
1745 | shufps $0b10001100, %xmm0, %xmm4 | |
1746 | pxor %xmm4, %xmm0 | |
1747 | pxor %xmm1, %xmm0 | |
1748 | ||
1749 | movaps %xmm2, %xmm5 | |
1750 | movaps %xmm2, %xmm6 | |
1751 | pslldq $4, %xmm5 | |
1752 | pshufd $0b11111111, %xmm0, %xmm3 | |
1753 | pxor %xmm3, %xmm2 | |
1754 | pxor %xmm5, %xmm2 | |
1755 | ||
1756 | movaps %xmm0, %xmm1 | |
1757 | shufps $0b01000100, %xmm0, %xmm6 | |
0d258efb | 1758 | movaps %xmm6, (TKEYP) |
54b6a1bd | 1759 | shufps $0b01001110, %xmm2, %xmm1 |
0d258efb MK |
1760 | movaps %xmm1, 0x10(TKEYP) |
1761 | add $0x20, TKEYP | |
54b6a1bd | 1762 | ret |
8309b745 | 1763 | ENDPROC(_key_expansion_192a) |
54b6a1bd | 1764 | |
0d258efb | 1765 | .align 4 |
54b6a1bd HY |
1766 | _key_expansion_192b: |
1767 | pshufd $0b01010101, %xmm1, %xmm1 | |
1768 | shufps $0b00010000, %xmm0, %xmm4 | |
1769 | pxor %xmm4, %xmm0 | |
1770 | shufps $0b10001100, %xmm0, %xmm4 | |
1771 | pxor %xmm4, %xmm0 | |
1772 | pxor %xmm1, %xmm0 | |
1773 | ||
1774 | movaps %xmm2, %xmm5 | |
1775 | pslldq $4, %xmm5 | |
1776 | pshufd $0b11111111, %xmm0, %xmm3 | |
1777 | pxor %xmm3, %xmm2 | |
1778 | pxor %xmm5, %xmm2 | |
1779 | ||
0d258efb MK |
1780 | movaps %xmm0, (TKEYP) |
1781 | add $0x10, TKEYP | |
54b6a1bd | 1782 | ret |
8309b745 | 1783 | ENDPROC(_key_expansion_192b) |
54b6a1bd | 1784 | |
0d258efb | 1785 | .align 4 |
54b6a1bd HY |
1786 | _key_expansion_256b: |
1787 | pshufd $0b10101010, %xmm1, %xmm1 | |
1788 | shufps $0b00010000, %xmm2, %xmm4 | |
1789 | pxor %xmm4, %xmm2 | |
1790 | shufps $0b10001100, %xmm2, %xmm4 | |
1791 | pxor %xmm4, %xmm2 | |
1792 | pxor %xmm1, %xmm2 | |
0d258efb MK |
1793 | movaps %xmm2, (TKEYP) |
1794 | add $0x10, TKEYP | |
54b6a1bd | 1795 | ret |
8309b745 | 1796 | ENDPROC(_key_expansion_256b) |
54b6a1bd HY |
1797 | |
1798 | /* | |
1799 | * int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, | |
1800 | * unsigned int key_len) | |
1801 | */ | |
1802 | ENTRY(aesni_set_key) | |
0d258efb MK |
1803 | #ifndef __x86_64__ |
1804 | pushl KEYP | |
1805 | movl 8(%esp), KEYP # ctx | |
1806 | movl 12(%esp), UKEYP # in_key | |
1807 | movl 16(%esp), %edx # key_len | |
1808 | #endif | |
1809 | movups (UKEYP), %xmm0 # user key (first 16 bytes) | |
1810 | movaps %xmm0, (KEYP) | |
1811 | lea 0x10(KEYP), TKEYP # key addr | |
1812 | movl %edx, 480(KEYP) | |
54b6a1bd HY |
1813 | pxor %xmm4, %xmm4 # xmm4 is assumed 0 in _key_expansion_x |
1814 | cmp $24, %dl | |
1815 | jb .Lenc_key128 | |
1816 | je .Lenc_key192 | |
0d258efb MK |
1817 | movups 0x10(UKEYP), %xmm2 # other user key |
1818 | movaps %xmm2, (TKEYP) | |
1819 | add $0x10, TKEYP | |
b369e521 | 1820 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1821 | call _key_expansion_256a |
b369e521 | 1822 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 |
54b6a1bd | 1823 | call _key_expansion_256b |
b369e521 | 1824 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1825 | call _key_expansion_256a |
b369e521 | 1826 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 |
54b6a1bd | 1827 | call _key_expansion_256b |
b369e521 | 1828 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1829 | call _key_expansion_256a |
b369e521 | 1830 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 |
54b6a1bd | 1831 | call _key_expansion_256b |
b369e521 | 1832 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1833 | call _key_expansion_256a |
b369e521 | 1834 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 |
54b6a1bd | 1835 | call _key_expansion_256b |
b369e521 | 1836 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1837 | call _key_expansion_256a |
b369e521 | 1838 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 |
54b6a1bd | 1839 | call _key_expansion_256b |
b369e521 | 1840 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1841 | call _key_expansion_256a |
b369e521 | 1842 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 |
54b6a1bd | 1843 | call _key_expansion_256b |
b369e521 | 1844 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd HY |
1845 | call _key_expansion_256a |
1846 | jmp .Ldec_key | |
1847 | .Lenc_key192: | |
0d258efb | 1848 | movq 0x10(UKEYP), %xmm2 # other user key |
b369e521 | 1849 | AESKEYGENASSIST 0x1 %xmm2 %xmm1 # round 1 |
54b6a1bd | 1850 | call _key_expansion_192a |
b369e521 | 1851 | AESKEYGENASSIST 0x2 %xmm2 %xmm1 # round 2 |
54b6a1bd | 1852 | call _key_expansion_192b |
b369e521 | 1853 | AESKEYGENASSIST 0x4 %xmm2 %xmm1 # round 3 |
54b6a1bd | 1854 | call _key_expansion_192a |
b369e521 | 1855 | AESKEYGENASSIST 0x8 %xmm2 %xmm1 # round 4 |
54b6a1bd | 1856 | call _key_expansion_192b |
b369e521 | 1857 | AESKEYGENASSIST 0x10 %xmm2 %xmm1 # round 5 |
54b6a1bd | 1858 | call _key_expansion_192a |
b369e521 | 1859 | AESKEYGENASSIST 0x20 %xmm2 %xmm1 # round 6 |
54b6a1bd | 1860 | call _key_expansion_192b |
b369e521 | 1861 | AESKEYGENASSIST 0x40 %xmm2 %xmm1 # round 7 |
54b6a1bd | 1862 | call _key_expansion_192a |
b369e521 | 1863 | AESKEYGENASSIST 0x80 %xmm2 %xmm1 # round 8 |
54b6a1bd HY |
1864 | call _key_expansion_192b |
1865 | jmp .Ldec_key | |
1866 | .Lenc_key128: | |
b369e521 | 1867 | AESKEYGENASSIST 0x1 %xmm0 %xmm1 # round 1 |
54b6a1bd | 1868 | call _key_expansion_128 |
b369e521 | 1869 | AESKEYGENASSIST 0x2 %xmm0 %xmm1 # round 2 |
54b6a1bd | 1870 | call _key_expansion_128 |
b369e521 | 1871 | AESKEYGENASSIST 0x4 %xmm0 %xmm1 # round 3 |
54b6a1bd | 1872 | call _key_expansion_128 |
b369e521 | 1873 | AESKEYGENASSIST 0x8 %xmm0 %xmm1 # round 4 |
54b6a1bd | 1874 | call _key_expansion_128 |
b369e521 | 1875 | AESKEYGENASSIST 0x10 %xmm0 %xmm1 # round 5 |
54b6a1bd | 1876 | call _key_expansion_128 |
b369e521 | 1877 | AESKEYGENASSIST 0x20 %xmm0 %xmm1 # round 6 |
54b6a1bd | 1878 | call _key_expansion_128 |
b369e521 | 1879 | AESKEYGENASSIST 0x40 %xmm0 %xmm1 # round 7 |
54b6a1bd | 1880 | call _key_expansion_128 |
b369e521 | 1881 | AESKEYGENASSIST 0x80 %xmm0 %xmm1 # round 8 |
54b6a1bd | 1882 | call _key_expansion_128 |
b369e521 | 1883 | AESKEYGENASSIST 0x1b %xmm0 %xmm1 # round 9 |
54b6a1bd | 1884 | call _key_expansion_128 |
b369e521 | 1885 | AESKEYGENASSIST 0x36 %xmm0 %xmm1 # round 10 |
54b6a1bd HY |
1886 | call _key_expansion_128 |
1887 | .Ldec_key: | |
0d258efb MK |
1888 | sub $0x10, TKEYP |
1889 | movaps (KEYP), %xmm0 | |
1890 | movaps (TKEYP), %xmm1 | |
1891 | movaps %xmm0, 240(TKEYP) | |
1892 | movaps %xmm1, 240(KEYP) | |
1893 | add $0x10, KEYP | |
1894 | lea 240-16(TKEYP), UKEYP | |
54b6a1bd HY |
1895 | .align 4 |
1896 | .Ldec_key_loop: | |
0d258efb | 1897 | movaps (KEYP), %xmm0 |
b369e521 | 1898 | AESIMC %xmm0 %xmm1 |
0d258efb MK |
1899 | movaps %xmm1, (UKEYP) |
1900 | add $0x10, KEYP | |
1901 | sub $0x10, UKEYP | |
1902 | cmp TKEYP, KEYP | |
54b6a1bd | 1903 | jb .Ldec_key_loop |
0d258efb MK |
1904 | xor AREG, AREG |
1905 | #ifndef __x86_64__ | |
1906 | popl KEYP | |
1907 | #endif | |
54b6a1bd | 1908 | ret |
8309b745 | 1909 | ENDPROC(aesni_set_key) |
54b6a1bd HY |
1910 | |
1911 | /* | |
1912 | * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
1913 | */ | |
1914 | ENTRY(aesni_enc) | |
0d258efb MK |
1915 | #ifndef __x86_64__ |
1916 | pushl KEYP | |
1917 | pushl KLEN | |
1918 | movl 12(%esp), KEYP | |
1919 | movl 16(%esp), OUTP | |
1920 | movl 20(%esp), INP | |
1921 | #endif | |
54b6a1bd HY |
1922 | movl 480(KEYP), KLEN # key length |
1923 | movups (INP), STATE # input | |
1924 | call _aesni_enc1 | |
1925 | movups STATE, (OUTP) # output | |
0d258efb MK |
1926 | #ifndef __x86_64__ |
1927 | popl KLEN | |
1928 | popl KEYP | |
1929 | #endif | |
54b6a1bd | 1930 | ret |
8309b745 | 1931 | ENDPROC(aesni_enc) |
54b6a1bd HY |
1932 | |
1933 | /* | |
1934 | * _aesni_enc1: internal ABI | |
1935 | * input: | |
1936 | * KEYP: key struct pointer | |
1937 | * KLEN: round count | |
1938 | * STATE: initial state (input) | |
1939 | * output: | |
1940 | * STATE: finial state (output) | |
1941 | * changed: | |
1942 | * KEY | |
1943 | * TKEYP (T1) | |
1944 | */ | |
0d258efb | 1945 | .align 4 |
54b6a1bd HY |
1946 | _aesni_enc1: |
1947 | movaps (KEYP), KEY # key | |
1948 | mov KEYP, TKEYP | |
1949 | pxor KEY, STATE # round 0 | |
1950 | add $0x30, TKEYP | |
1951 | cmp $24, KLEN | |
1952 | jb .Lenc128 | |
1953 | lea 0x20(TKEYP), TKEYP | |
1954 | je .Lenc192 | |
1955 | add $0x20, TKEYP | |
1956 | movaps -0x60(TKEYP), KEY | |
b369e521 | 1957 | AESENC KEY STATE |
54b6a1bd | 1958 | movaps -0x50(TKEYP), KEY |
b369e521 | 1959 | AESENC KEY STATE |
54b6a1bd HY |
1960 | .align 4 |
1961 | .Lenc192: | |
1962 | movaps -0x40(TKEYP), KEY | |
b369e521 | 1963 | AESENC KEY STATE |
54b6a1bd | 1964 | movaps -0x30(TKEYP), KEY |
b369e521 | 1965 | AESENC KEY STATE |
54b6a1bd HY |
1966 | .align 4 |
1967 | .Lenc128: | |
1968 | movaps -0x20(TKEYP), KEY | |
b369e521 | 1969 | AESENC KEY STATE |
54b6a1bd | 1970 | movaps -0x10(TKEYP), KEY |
b369e521 | 1971 | AESENC KEY STATE |
54b6a1bd | 1972 | movaps (TKEYP), KEY |
b369e521 | 1973 | AESENC KEY STATE |
54b6a1bd | 1974 | movaps 0x10(TKEYP), KEY |
b369e521 | 1975 | AESENC KEY STATE |
54b6a1bd | 1976 | movaps 0x20(TKEYP), KEY |
b369e521 | 1977 | AESENC KEY STATE |
54b6a1bd | 1978 | movaps 0x30(TKEYP), KEY |
b369e521 | 1979 | AESENC KEY STATE |
54b6a1bd | 1980 | movaps 0x40(TKEYP), KEY |
b369e521 | 1981 | AESENC KEY STATE |
54b6a1bd | 1982 | movaps 0x50(TKEYP), KEY |
b369e521 | 1983 | AESENC KEY STATE |
54b6a1bd | 1984 | movaps 0x60(TKEYP), KEY |
b369e521 | 1985 | AESENC KEY STATE |
54b6a1bd | 1986 | movaps 0x70(TKEYP), KEY |
b369e521 | 1987 | AESENCLAST KEY STATE |
54b6a1bd | 1988 | ret |
8309b745 | 1989 | ENDPROC(_aesni_enc1) |
54b6a1bd HY |
1990 | |
1991 | /* | |
1992 | * _aesni_enc4: internal ABI | |
1993 | * input: | |
1994 | * KEYP: key struct pointer | |
1995 | * KLEN: round count | |
1996 | * STATE1: initial state (input) | |
1997 | * STATE2 | |
1998 | * STATE3 | |
1999 | * STATE4 | |
2000 | * output: | |
2001 | * STATE1: finial state (output) | |
2002 | * STATE2 | |
2003 | * STATE3 | |
2004 | * STATE4 | |
2005 | * changed: | |
2006 | * KEY | |
2007 | * TKEYP (T1) | |
2008 | */ | |
0d258efb | 2009 | .align 4 |
54b6a1bd HY |
2010 | _aesni_enc4: |
2011 | movaps (KEYP), KEY # key | |
2012 | mov KEYP, TKEYP | |
2013 | pxor KEY, STATE1 # round 0 | |
2014 | pxor KEY, STATE2 | |
2015 | pxor KEY, STATE3 | |
2016 | pxor KEY, STATE4 | |
2017 | add $0x30, TKEYP | |
2018 | cmp $24, KLEN | |
2019 | jb .L4enc128 | |
2020 | lea 0x20(TKEYP), TKEYP | |
2021 | je .L4enc192 | |
2022 | add $0x20, TKEYP | |
2023 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
2024 | AESENC KEY STATE1 |
2025 | AESENC KEY STATE2 | |
2026 | AESENC KEY STATE3 | |
2027 | AESENC KEY STATE4 | |
54b6a1bd | 2028 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
2029 | AESENC KEY STATE1 |
2030 | AESENC KEY STATE2 | |
2031 | AESENC KEY STATE3 | |
2032 | AESENC KEY STATE4 | |
54b6a1bd HY |
2033 | #.align 4 |
2034 | .L4enc192: | |
2035 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
2036 | AESENC KEY STATE1 |
2037 | AESENC KEY STATE2 | |
2038 | AESENC KEY STATE3 | |
2039 | AESENC KEY STATE4 | |
54b6a1bd | 2040 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
2041 | AESENC KEY STATE1 |
2042 | AESENC KEY STATE2 | |
2043 | AESENC KEY STATE3 | |
2044 | AESENC KEY STATE4 | |
54b6a1bd HY |
2045 | #.align 4 |
2046 | .L4enc128: | |
2047 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
2048 | AESENC KEY STATE1 |
2049 | AESENC KEY STATE2 | |
2050 | AESENC KEY STATE3 | |
2051 | AESENC KEY STATE4 | |
54b6a1bd | 2052 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
2053 | AESENC KEY STATE1 |
2054 | AESENC KEY STATE2 | |
2055 | AESENC KEY STATE3 | |
2056 | AESENC KEY STATE4 | |
54b6a1bd | 2057 | movaps (TKEYP), KEY |
b369e521 HY |
2058 | AESENC KEY STATE1 |
2059 | AESENC KEY STATE2 | |
2060 | AESENC KEY STATE3 | |
2061 | AESENC KEY STATE4 | |
54b6a1bd | 2062 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
2063 | AESENC KEY STATE1 |
2064 | AESENC KEY STATE2 | |
2065 | AESENC KEY STATE3 | |
2066 | AESENC KEY STATE4 | |
54b6a1bd | 2067 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
2068 | AESENC KEY STATE1 |
2069 | AESENC KEY STATE2 | |
2070 | AESENC KEY STATE3 | |
2071 | AESENC KEY STATE4 | |
54b6a1bd | 2072 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
2073 | AESENC KEY STATE1 |
2074 | AESENC KEY STATE2 | |
2075 | AESENC KEY STATE3 | |
2076 | AESENC KEY STATE4 | |
54b6a1bd | 2077 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
2078 | AESENC KEY STATE1 |
2079 | AESENC KEY STATE2 | |
2080 | AESENC KEY STATE3 | |
2081 | AESENC KEY STATE4 | |
54b6a1bd | 2082 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
2083 | AESENC KEY STATE1 |
2084 | AESENC KEY STATE2 | |
2085 | AESENC KEY STATE3 | |
2086 | AESENC KEY STATE4 | |
54b6a1bd | 2087 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
2088 | AESENC KEY STATE1 |
2089 | AESENC KEY STATE2 | |
2090 | AESENC KEY STATE3 | |
2091 | AESENC KEY STATE4 | |
54b6a1bd | 2092 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
2093 | AESENCLAST KEY STATE1 # last round |
2094 | AESENCLAST KEY STATE2 | |
2095 | AESENCLAST KEY STATE3 | |
2096 | AESENCLAST KEY STATE4 | |
54b6a1bd | 2097 | ret |
8309b745 | 2098 | ENDPROC(_aesni_enc4) |
54b6a1bd HY |
2099 | |
2100 | /* | |
2101 | * void aesni_dec (struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src) | |
2102 | */ | |
2103 | ENTRY(aesni_dec) | |
0d258efb MK |
2104 | #ifndef __x86_64__ |
2105 | pushl KEYP | |
2106 | pushl KLEN | |
2107 | movl 12(%esp), KEYP | |
2108 | movl 16(%esp), OUTP | |
2109 | movl 20(%esp), INP | |
2110 | #endif | |
54b6a1bd HY |
2111 | mov 480(KEYP), KLEN # key length |
2112 | add $240, KEYP | |
2113 | movups (INP), STATE # input | |
2114 | call _aesni_dec1 | |
2115 | movups STATE, (OUTP) #output | |
0d258efb MK |
2116 | #ifndef __x86_64__ |
2117 | popl KLEN | |
2118 | popl KEYP | |
2119 | #endif | |
54b6a1bd | 2120 | ret |
8309b745 | 2121 | ENDPROC(aesni_dec) |
54b6a1bd HY |
2122 | |
2123 | /* | |
2124 | * _aesni_dec1: internal ABI | |
2125 | * input: | |
2126 | * KEYP: key struct pointer | |
2127 | * KLEN: key length | |
2128 | * STATE: initial state (input) | |
2129 | * output: | |
2130 | * STATE: finial state (output) | |
2131 | * changed: | |
2132 | * KEY | |
2133 | * TKEYP (T1) | |
2134 | */ | |
0d258efb | 2135 | .align 4 |
54b6a1bd HY |
2136 | _aesni_dec1: |
2137 | movaps (KEYP), KEY # key | |
2138 | mov KEYP, TKEYP | |
2139 | pxor KEY, STATE # round 0 | |
2140 | add $0x30, TKEYP | |
2141 | cmp $24, KLEN | |
2142 | jb .Ldec128 | |
2143 | lea 0x20(TKEYP), TKEYP | |
2144 | je .Ldec192 | |
2145 | add $0x20, TKEYP | |
2146 | movaps -0x60(TKEYP), KEY | |
b369e521 | 2147 | AESDEC KEY STATE |
54b6a1bd | 2148 | movaps -0x50(TKEYP), KEY |
b369e521 | 2149 | AESDEC KEY STATE |
54b6a1bd HY |
2150 | .align 4 |
2151 | .Ldec192: | |
2152 | movaps -0x40(TKEYP), KEY | |
b369e521 | 2153 | AESDEC KEY STATE |
54b6a1bd | 2154 | movaps -0x30(TKEYP), KEY |
b369e521 | 2155 | AESDEC KEY STATE |
54b6a1bd HY |
2156 | .align 4 |
2157 | .Ldec128: | |
2158 | movaps -0x20(TKEYP), KEY | |
b369e521 | 2159 | AESDEC KEY STATE |
54b6a1bd | 2160 | movaps -0x10(TKEYP), KEY |
b369e521 | 2161 | AESDEC KEY STATE |
54b6a1bd | 2162 | movaps (TKEYP), KEY |
b369e521 | 2163 | AESDEC KEY STATE |
54b6a1bd | 2164 | movaps 0x10(TKEYP), KEY |
b369e521 | 2165 | AESDEC KEY STATE |
54b6a1bd | 2166 | movaps 0x20(TKEYP), KEY |
b369e521 | 2167 | AESDEC KEY STATE |
54b6a1bd | 2168 | movaps 0x30(TKEYP), KEY |
b369e521 | 2169 | AESDEC KEY STATE |
54b6a1bd | 2170 | movaps 0x40(TKEYP), KEY |
b369e521 | 2171 | AESDEC KEY STATE |
54b6a1bd | 2172 | movaps 0x50(TKEYP), KEY |
b369e521 | 2173 | AESDEC KEY STATE |
54b6a1bd | 2174 | movaps 0x60(TKEYP), KEY |
b369e521 | 2175 | AESDEC KEY STATE |
54b6a1bd | 2176 | movaps 0x70(TKEYP), KEY |
b369e521 | 2177 | AESDECLAST KEY STATE |
54b6a1bd | 2178 | ret |
8309b745 | 2179 | ENDPROC(_aesni_dec1) |
54b6a1bd HY |
2180 | |
2181 | /* | |
2182 | * _aesni_dec4: internal ABI | |
2183 | * input: | |
2184 | * KEYP: key struct pointer | |
2185 | * KLEN: key length | |
2186 | * STATE1: initial state (input) | |
2187 | * STATE2 | |
2188 | * STATE3 | |
2189 | * STATE4 | |
2190 | * output: | |
2191 | * STATE1: finial state (output) | |
2192 | * STATE2 | |
2193 | * STATE3 | |
2194 | * STATE4 | |
2195 | * changed: | |
2196 | * KEY | |
2197 | * TKEYP (T1) | |
2198 | */ | |
0d258efb | 2199 | .align 4 |
54b6a1bd HY |
2200 | _aesni_dec4: |
2201 | movaps (KEYP), KEY # key | |
2202 | mov KEYP, TKEYP | |
2203 | pxor KEY, STATE1 # round 0 | |
2204 | pxor KEY, STATE2 | |
2205 | pxor KEY, STATE3 | |
2206 | pxor KEY, STATE4 | |
2207 | add $0x30, TKEYP | |
2208 | cmp $24, KLEN | |
2209 | jb .L4dec128 | |
2210 | lea 0x20(TKEYP), TKEYP | |
2211 | je .L4dec192 | |
2212 | add $0x20, TKEYP | |
2213 | movaps -0x60(TKEYP), KEY | |
b369e521 HY |
2214 | AESDEC KEY STATE1 |
2215 | AESDEC KEY STATE2 | |
2216 | AESDEC KEY STATE3 | |
2217 | AESDEC KEY STATE4 | |
54b6a1bd | 2218 | movaps -0x50(TKEYP), KEY |
b369e521 HY |
2219 | AESDEC KEY STATE1 |
2220 | AESDEC KEY STATE2 | |
2221 | AESDEC KEY STATE3 | |
2222 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2223 | .align 4 |
2224 | .L4dec192: | |
2225 | movaps -0x40(TKEYP), KEY | |
b369e521 HY |
2226 | AESDEC KEY STATE1 |
2227 | AESDEC KEY STATE2 | |
2228 | AESDEC KEY STATE3 | |
2229 | AESDEC KEY STATE4 | |
54b6a1bd | 2230 | movaps -0x30(TKEYP), KEY |
b369e521 HY |
2231 | AESDEC KEY STATE1 |
2232 | AESDEC KEY STATE2 | |
2233 | AESDEC KEY STATE3 | |
2234 | AESDEC KEY STATE4 | |
54b6a1bd HY |
2235 | .align 4 |
2236 | .L4dec128: | |
2237 | movaps -0x20(TKEYP), KEY | |
b369e521 HY |
2238 | AESDEC KEY STATE1 |
2239 | AESDEC KEY STATE2 | |
2240 | AESDEC KEY STATE3 | |
2241 | AESDEC KEY STATE4 | |
54b6a1bd | 2242 | movaps -0x10(TKEYP), KEY |
b369e521 HY |
2243 | AESDEC KEY STATE1 |
2244 | AESDEC KEY STATE2 | |
2245 | AESDEC KEY STATE3 | |
2246 | AESDEC KEY STATE4 | |
54b6a1bd | 2247 | movaps (TKEYP), KEY |
b369e521 HY |
2248 | AESDEC KEY STATE1 |
2249 | AESDEC KEY STATE2 | |
2250 | AESDEC KEY STATE3 | |
2251 | AESDEC KEY STATE4 | |
54b6a1bd | 2252 | movaps 0x10(TKEYP), KEY |
b369e521 HY |
2253 | AESDEC KEY STATE1 |
2254 | AESDEC KEY STATE2 | |
2255 | AESDEC KEY STATE3 | |
2256 | AESDEC KEY STATE4 | |
54b6a1bd | 2257 | movaps 0x20(TKEYP), KEY |
b369e521 HY |
2258 | AESDEC KEY STATE1 |
2259 | AESDEC KEY STATE2 | |
2260 | AESDEC KEY STATE3 | |
2261 | AESDEC KEY STATE4 | |
54b6a1bd | 2262 | movaps 0x30(TKEYP), KEY |
b369e521 HY |
2263 | AESDEC KEY STATE1 |
2264 | AESDEC KEY STATE2 | |
2265 | AESDEC KEY STATE3 | |
2266 | AESDEC KEY STATE4 | |
54b6a1bd | 2267 | movaps 0x40(TKEYP), KEY |
b369e521 HY |
2268 | AESDEC KEY STATE1 |
2269 | AESDEC KEY STATE2 | |
2270 | AESDEC KEY STATE3 | |
2271 | AESDEC KEY STATE4 | |
54b6a1bd | 2272 | movaps 0x50(TKEYP), KEY |
b369e521 HY |
2273 | AESDEC KEY STATE1 |
2274 | AESDEC KEY STATE2 | |
2275 | AESDEC KEY STATE3 | |
2276 | AESDEC KEY STATE4 | |
54b6a1bd | 2277 | movaps 0x60(TKEYP), KEY |
b369e521 HY |
2278 | AESDEC KEY STATE1 |
2279 | AESDEC KEY STATE2 | |
2280 | AESDEC KEY STATE3 | |
2281 | AESDEC KEY STATE4 | |
54b6a1bd | 2282 | movaps 0x70(TKEYP), KEY |
b369e521 HY |
2283 | AESDECLAST KEY STATE1 # last round |
2284 | AESDECLAST KEY STATE2 | |
2285 | AESDECLAST KEY STATE3 | |
2286 | AESDECLAST KEY STATE4 | |
54b6a1bd | 2287 | ret |
8309b745 | 2288 | ENDPROC(_aesni_dec4) |
54b6a1bd HY |
2289 | |
2290 | /* | |
2291 | * void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2292 | * size_t len) | |
2293 | */ | |
2294 | ENTRY(aesni_ecb_enc) | |
0d258efb MK |
2295 | #ifndef __x86_64__ |
2296 | pushl LEN | |
2297 | pushl KEYP | |
2298 | pushl KLEN | |
2299 | movl 16(%esp), KEYP | |
2300 | movl 20(%esp), OUTP | |
2301 | movl 24(%esp), INP | |
2302 | movl 28(%esp), LEN | |
2303 | #endif | |
54b6a1bd HY |
2304 | test LEN, LEN # check length |
2305 | jz .Lecb_enc_ret | |
2306 | mov 480(KEYP), KLEN | |
2307 | cmp $16, LEN | |
2308 | jb .Lecb_enc_ret | |
2309 | cmp $64, LEN | |
2310 | jb .Lecb_enc_loop1 | |
2311 | .align 4 | |
2312 | .Lecb_enc_loop4: | |
2313 | movups (INP), STATE1 | |
2314 | movups 0x10(INP), STATE2 | |
2315 | movups 0x20(INP), STATE3 | |
2316 | movups 0x30(INP), STATE4 | |
2317 | call _aesni_enc4 | |
2318 | movups STATE1, (OUTP) | |
2319 | movups STATE2, 0x10(OUTP) | |
2320 | movups STATE3, 0x20(OUTP) | |
2321 | movups STATE4, 0x30(OUTP) | |
2322 | sub $64, LEN | |
2323 | add $64, INP | |
2324 | add $64, OUTP | |
2325 | cmp $64, LEN | |
2326 | jge .Lecb_enc_loop4 | |
2327 | cmp $16, LEN | |
2328 | jb .Lecb_enc_ret | |
2329 | .align 4 | |
2330 | .Lecb_enc_loop1: | |
2331 | movups (INP), STATE1 | |
2332 | call _aesni_enc1 | |
2333 | movups STATE1, (OUTP) | |
2334 | sub $16, LEN | |
2335 | add $16, INP | |
2336 | add $16, OUTP | |
2337 | cmp $16, LEN | |
2338 | jge .Lecb_enc_loop1 | |
2339 | .Lecb_enc_ret: | |
0d258efb MK |
2340 | #ifndef __x86_64__ |
2341 | popl KLEN | |
2342 | popl KEYP | |
2343 | popl LEN | |
2344 | #endif | |
54b6a1bd | 2345 | ret |
8309b745 | 2346 | ENDPROC(aesni_ecb_enc) |
54b6a1bd HY |
2347 | |
2348 | /* | |
2349 | * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2350 | * size_t len); | |
2351 | */ | |
2352 | ENTRY(aesni_ecb_dec) | |
0d258efb MK |
2353 | #ifndef __x86_64__ |
2354 | pushl LEN | |
2355 | pushl KEYP | |
2356 | pushl KLEN | |
2357 | movl 16(%esp), KEYP | |
2358 | movl 20(%esp), OUTP | |
2359 | movl 24(%esp), INP | |
2360 | movl 28(%esp), LEN | |
2361 | #endif | |
54b6a1bd HY |
2362 | test LEN, LEN |
2363 | jz .Lecb_dec_ret | |
2364 | mov 480(KEYP), KLEN | |
2365 | add $240, KEYP | |
2366 | cmp $16, LEN | |
2367 | jb .Lecb_dec_ret | |
2368 | cmp $64, LEN | |
2369 | jb .Lecb_dec_loop1 | |
2370 | .align 4 | |
2371 | .Lecb_dec_loop4: | |
2372 | movups (INP), STATE1 | |
2373 | movups 0x10(INP), STATE2 | |
2374 | movups 0x20(INP), STATE3 | |
2375 | movups 0x30(INP), STATE4 | |
2376 | call _aesni_dec4 | |
2377 | movups STATE1, (OUTP) | |
2378 | movups STATE2, 0x10(OUTP) | |
2379 | movups STATE3, 0x20(OUTP) | |
2380 | movups STATE4, 0x30(OUTP) | |
2381 | sub $64, LEN | |
2382 | add $64, INP | |
2383 | add $64, OUTP | |
2384 | cmp $64, LEN | |
2385 | jge .Lecb_dec_loop4 | |
2386 | cmp $16, LEN | |
2387 | jb .Lecb_dec_ret | |
2388 | .align 4 | |
2389 | .Lecb_dec_loop1: | |
2390 | movups (INP), STATE1 | |
2391 | call _aesni_dec1 | |
2392 | movups STATE1, (OUTP) | |
2393 | sub $16, LEN | |
2394 | add $16, INP | |
2395 | add $16, OUTP | |
2396 | cmp $16, LEN | |
2397 | jge .Lecb_dec_loop1 | |
2398 | .Lecb_dec_ret: | |
0d258efb MK |
2399 | #ifndef __x86_64__ |
2400 | popl KLEN | |
2401 | popl KEYP | |
2402 | popl LEN | |
2403 | #endif | |
54b6a1bd | 2404 | ret |
8309b745 | 2405 | ENDPROC(aesni_ecb_dec) |
54b6a1bd HY |
2406 | |
2407 | /* | |
2408 | * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2409 | * size_t len, u8 *iv) | |
2410 | */ | |
2411 | ENTRY(aesni_cbc_enc) | |
0d258efb MK |
2412 | #ifndef __x86_64__ |
2413 | pushl IVP | |
2414 | pushl LEN | |
2415 | pushl KEYP | |
2416 | pushl KLEN | |
2417 | movl 20(%esp), KEYP | |
2418 | movl 24(%esp), OUTP | |
2419 | movl 28(%esp), INP | |
2420 | movl 32(%esp), LEN | |
2421 | movl 36(%esp), IVP | |
2422 | #endif | |
54b6a1bd HY |
2423 | cmp $16, LEN |
2424 | jb .Lcbc_enc_ret | |
2425 | mov 480(KEYP), KLEN | |
2426 | movups (IVP), STATE # load iv as initial state | |
2427 | .align 4 | |
2428 | .Lcbc_enc_loop: | |
2429 | movups (INP), IN # load input | |
2430 | pxor IN, STATE | |
2431 | call _aesni_enc1 | |
2432 | movups STATE, (OUTP) # store output | |
2433 | sub $16, LEN | |
2434 | add $16, INP | |
2435 | add $16, OUTP | |
2436 | cmp $16, LEN | |
2437 | jge .Lcbc_enc_loop | |
2438 | movups STATE, (IVP) | |
2439 | .Lcbc_enc_ret: | |
0d258efb MK |
2440 | #ifndef __x86_64__ |
2441 | popl KLEN | |
2442 | popl KEYP | |
2443 | popl LEN | |
2444 | popl IVP | |
2445 | #endif | |
54b6a1bd | 2446 | ret |
8309b745 | 2447 | ENDPROC(aesni_cbc_enc) |
54b6a1bd HY |
2448 | |
2449 | /* | |
2450 | * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2451 | * size_t len, u8 *iv) | |
2452 | */ | |
2453 | ENTRY(aesni_cbc_dec) | |
0d258efb MK |
2454 | #ifndef __x86_64__ |
2455 | pushl IVP | |
2456 | pushl LEN | |
2457 | pushl KEYP | |
2458 | pushl KLEN | |
2459 | movl 20(%esp), KEYP | |
2460 | movl 24(%esp), OUTP | |
2461 | movl 28(%esp), INP | |
2462 | movl 32(%esp), LEN | |
2463 | movl 36(%esp), IVP | |
2464 | #endif | |
54b6a1bd | 2465 | cmp $16, LEN |
e6efaa02 | 2466 | jb .Lcbc_dec_just_ret |
54b6a1bd HY |
2467 | mov 480(KEYP), KLEN |
2468 | add $240, KEYP | |
2469 | movups (IVP), IV | |
2470 | cmp $64, LEN | |
2471 | jb .Lcbc_dec_loop1 | |
2472 | .align 4 | |
2473 | .Lcbc_dec_loop4: | |
2474 | movups (INP), IN1 | |
2475 | movaps IN1, STATE1 | |
2476 | movups 0x10(INP), IN2 | |
2477 | movaps IN2, STATE2 | |
0d258efb | 2478 | #ifdef __x86_64__ |
54b6a1bd HY |
2479 | movups 0x20(INP), IN3 |
2480 | movaps IN3, STATE3 | |
2481 | movups 0x30(INP), IN4 | |
2482 | movaps IN4, STATE4 | |
0d258efb MK |
2483 | #else |
2484 | movups 0x20(INP), IN1 | |
2485 | movaps IN1, STATE3 | |
2486 | movups 0x30(INP), IN2 | |
2487 | movaps IN2, STATE4 | |
2488 | #endif | |
54b6a1bd HY |
2489 | call _aesni_dec4 |
2490 | pxor IV, STATE1 | |
0d258efb | 2491 | #ifdef __x86_64__ |
54b6a1bd HY |
2492 | pxor IN1, STATE2 |
2493 | pxor IN2, STATE3 | |
2494 | pxor IN3, STATE4 | |
2495 | movaps IN4, IV | |
0d258efb | 2496 | #else |
0d258efb MK |
2497 | pxor IN1, STATE4 |
2498 | movaps IN2, IV | |
7c8d5184 MK |
2499 | movups (INP), IN1 |
2500 | pxor IN1, STATE2 | |
2501 | movups 0x10(INP), IN2 | |
2502 | pxor IN2, STATE3 | |
0d258efb | 2503 | #endif |
54b6a1bd HY |
2504 | movups STATE1, (OUTP) |
2505 | movups STATE2, 0x10(OUTP) | |
2506 | movups STATE3, 0x20(OUTP) | |
2507 | movups STATE4, 0x30(OUTP) | |
2508 | sub $64, LEN | |
2509 | add $64, INP | |
2510 | add $64, OUTP | |
2511 | cmp $64, LEN | |
2512 | jge .Lcbc_dec_loop4 | |
2513 | cmp $16, LEN | |
2514 | jb .Lcbc_dec_ret | |
2515 | .align 4 | |
2516 | .Lcbc_dec_loop1: | |
2517 | movups (INP), IN | |
2518 | movaps IN, STATE | |
2519 | call _aesni_dec1 | |
2520 | pxor IV, STATE | |
2521 | movups STATE, (OUTP) | |
2522 | movaps IN, IV | |
2523 | sub $16, LEN | |
2524 | add $16, INP | |
2525 | add $16, OUTP | |
2526 | cmp $16, LEN | |
2527 | jge .Lcbc_dec_loop1 | |
54b6a1bd | 2528 | .Lcbc_dec_ret: |
e6efaa02 HY |
2529 | movups IV, (IVP) |
2530 | .Lcbc_dec_just_ret: | |
0d258efb MK |
2531 | #ifndef __x86_64__ |
2532 | popl KLEN | |
2533 | popl KEYP | |
2534 | popl LEN | |
2535 | popl IVP | |
2536 | #endif | |
54b6a1bd | 2537 | ret |
8309b745 | 2538 | ENDPROC(aesni_cbc_dec) |
12387a46 | 2539 | |
0d258efb | 2540 | #ifdef __x86_64__ |
1253cab8 | 2541 | .pushsection .rodata |
12387a46 HY |
2542 | .align 16 |
2543 | .Lbswap_mask: | |
2544 | .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 | |
1253cab8 | 2545 | .popsection |
12387a46 HY |
2546 | |
2547 | /* | |
2548 | * _aesni_inc_init: internal ABI | |
2549 | * setup registers used by _aesni_inc | |
2550 | * input: | |
2551 | * IV | |
2552 | * output: | |
2553 | * CTR: == IV, in little endian | |
2554 | * TCTR_LOW: == lower qword of CTR | |
2555 | * INC: == 1, in little endian | |
2556 | * BSWAP_MASK == endian swapping mask | |
2557 | */ | |
0d258efb | 2558 | .align 4 |
12387a46 HY |
2559 | _aesni_inc_init: |
2560 | movaps .Lbswap_mask, BSWAP_MASK | |
2561 | movaps IV, CTR | |
2562 | PSHUFB_XMM BSWAP_MASK CTR | |
2563 | mov $1, TCTR_LOW | |
32cbd7df HY |
2564 | MOVQ_R64_XMM TCTR_LOW INC |
2565 | MOVQ_R64_XMM CTR TCTR_LOW | |
12387a46 | 2566 | ret |
8309b745 | 2567 | ENDPROC(_aesni_inc_init) |
12387a46 HY |
2568 | |
2569 | /* | |
2570 | * _aesni_inc: internal ABI | |
2571 | * Increase IV by 1, IV is in big endian | |
2572 | * input: | |
2573 | * IV | |
2574 | * CTR: == IV, in little endian | |
2575 | * TCTR_LOW: == lower qword of CTR | |
2576 | * INC: == 1, in little endian | |
2577 | * BSWAP_MASK == endian swapping mask | |
2578 | * output: | |
2579 | * IV: Increase by 1 | |
2580 | * changed: | |
2581 | * CTR: == output IV, in little endian | |
2582 | * TCTR_LOW: == lower qword of CTR | |
2583 | */ | |
0d258efb | 2584 | .align 4 |
12387a46 HY |
2585 | _aesni_inc: |
2586 | paddq INC, CTR | |
2587 | add $1, TCTR_LOW | |
2588 | jnc .Linc_low | |
2589 | pslldq $8, INC | |
2590 | paddq INC, CTR | |
2591 | psrldq $8, INC | |
2592 | .Linc_low: | |
2593 | movaps CTR, IV | |
2594 | PSHUFB_XMM BSWAP_MASK IV | |
2595 | ret | |
8309b745 | 2596 | ENDPROC(_aesni_inc) |
12387a46 HY |
2597 | |
2598 | /* | |
2599 | * void aesni_ctr_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2600 | * size_t len, u8 *iv) | |
2601 | */ | |
2602 | ENTRY(aesni_ctr_enc) | |
2603 | cmp $16, LEN | |
2604 | jb .Lctr_enc_just_ret | |
2605 | mov 480(KEYP), KLEN | |
2606 | movups (IVP), IV | |
2607 | call _aesni_inc_init | |
2608 | cmp $64, LEN | |
2609 | jb .Lctr_enc_loop1 | |
2610 | .align 4 | |
2611 | .Lctr_enc_loop4: | |
2612 | movaps IV, STATE1 | |
2613 | call _aesni_inc | |
2614 | movups (INP), IN1 | |
2615 | movaps IV, STATE2 | |
2616 | call _aesni_inc | |
2617 | movups 0x10(INP), IN2 | |
2618 | movaps IV, STATE3 | |
2619 | call _aesni_inc | |
2620 | movups 0x20(INP), IN3 | |
2621 | movaps IV, STATE4 | |
2622 | call _aesni_inc | |
2623 | movups 0x30(INP), IN4 | |
2624 | call _aesni_enc4 | |
2625 | pxor IN1, STATE1 | |
2626 | movups STATE1, (OUTP) | |
2627 | pxor IN2, STATE2 | |
2628 | movups STATE2, 0x10(OUTP) | |
2629 | pxor IN3, STATE3 | |
2630 | movups STATE3, 0x20(OUTP) | |
2631 | pxor IN4, STATE4 | |
2632 | movups STATE4, 0x30(OUTP) | |
2633 | sub $64, LEN | |
2634 | add $64, INP | |
2635 | add $64, OUTP | |
2636 | cmp $64, LEN | |
2637 | jge .Lctr_enc_loop4 | |
2638 | cmp $16, LEN | |
2639 | jb .Lctr_enc_ret | |
2640 | .align 4 | |
2641 | .Lctr_enc_loop1: | |
2642 | movaps IV, STATE | |
2643 | call _aesni_inc | |
2644 | movups (INP), IN | |
2645 | call _aesni_enc1 | |
2646 | pxor IN, STATE | |
2647 | movups STATE, (OUTP) | |
2648 | sub $16, LEN | |
2649 | add $16, INP | |
2650 | add $16, OUTP | |
2651 | cmp $16, LEN | |
2652 | jge .Lctr_enc_loop1 | |
2653 | .Lctr_enc_ret: | |
2654 | movups IV, (IVP) | |
2655 | .Lctr_enc_just_ret: | |
2656 | ret | |
8309b745 | 2657 | ENDPROC(aesni_ctr_enc) |
c456a9cd JK |
2658 | |
2659 | /* | |
2660 | * _aesni_gf128mul_x_ble: internal ABI | |
2661 | * Multiply in GF(2^128) for XTS IVs | |
2662 | * input: | |
2663 | * IV: current IV | |
2664 | * GF128MUL_MASK == mask with 0x87 and 0x01 | |
2665 | * output: | |
2666 | * IV: next IV | |
2667 | * changed: | |
2668 | * CTR: == temporary value | |
2669 | */ | |
2670 | #define _aesni_gf128mul_x_ble() \ | |
2671 | pshufd $0x13, IV, CTR; \ | |
2672 | paddq IV, IV; \ | |
2673 | psrad $31, CTR; \ | |
2674 | pand GF128MUL_MASK, CTR; \ | |
2675 | pxor CTR, IV; | |
2676 | ||
2677 | /* | |
2678 | * void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src, | |
2679 | * bool enc, u8 *iv) | |
2680 | */ | |
2681 | ENTRY(aesni_xts_crypt8) | |
2682 | cmpb $0, %cl | |
2683 | movl $0, %ecx | |
2684 | movl $240, %r10d | |
2685 | leaq _aesni_enc4, %r11 | |
2686 | leaq _aesni_dec4, %rax | |
2687 | cmovel %r10d, %ecx | |
2688 | cmoveq %rax, %r11 | |
2689 | ||
2690 | movdqa .Lgf128mul_x_ble_mask, GF128MUL_MASK | |
2691 | movups (IVP), IV | |
2692 | ||
2693 | mov 480(KEYP), KLEN | |
2694 | addq %rcx, KEYP | |
2695 | ||
2696 | movdqa IV, STATE1 | |
fe6510b5 JK |
2697 | movdqu 0x00(INP), INC |
2698 | pxor INC, STATE1 | |
c456a9cd JK |
2699 | movdqu IV, 0x00(OUTP) |
2700 | ||
2701 | _aesni_gf128mul_x_ble() | |
2702 | movdqa IV, STATE2 | |
fe6510b5 JK |
2703 | movdqu 0x10(INP), INC |
2704 | pxor INC, STATE2 | |
c456a9cd JK |
2705 | movdqu IV, 0x10(OUTP) |
2706 | ||
2707 | _aesni_gf128mul_x_ble() | |
2708 | movdqa IV, STATE3 | |
fe6510b5 JK |
2709 | movdqu 0x20(INP), INC |
2710 | pxor INC, STATE3 | |
c456a9cd JK |
2711 | movdqu IV, 0x20(OUTP) |
2712 | ||
2713 | _aesni_gf128mul_x_ble() | |
2714 | movdqa IV, STATE4 | |
fe6510b5 JK |
2715 | movdqu 0x30(INP), INC |
2716 | pxor INC, STATE4 | |
c456a9cd JK |
2717 | movdqu IV, 0x30(OUTP) |
2718 | ||
2719 | call *%r11 | |
2720 | ||
fe6510b5 JK |
2721 | movdqu 0x00(OUTP), INC |
2722 | pxor INC, STATE1 | |
c456a9cd JK |
2723 | movdqu STATE1, 0x00(OUTP) |
2724 | ||
2725 | _aesni_gf128mul_x_ble() | |
2726 | movdqa IV, STATE1 | |
fe6510b5 JK |
2727 | movdqu 0x40(INP), INC |
2728 | pxor INC, STATE1 | |
c456a9cd JK |
2729 | movdqu IV, 0x40(OUTP) |
2730 | ||
fe6510b5 JK |
2731 | movdqu 0x10(OUTP), INC |
2732 | pxor INC, STATE2 | |
c456a9cd JK |
2733 | movdqu STATE2, 0x10(OUTP) |
2734 | ||
2735 | _aesni_gf128mul_x_ble() | |
2736 | movdqa IV, STATE2 | |
fe6510b5 JK |
2737 | movdqu 0x50(INP), INC |
2738 | pxor INC, STATE2 | |
c456a9cd JK |
2739 | movdqu IV, 0x50(OUTP) |
2740 | ||
fe6510b5 JK |
2741 | movdqu 0x20(OUTP), INC |
2742 | pxor INC, STATE3 | |
c456a9cd JK |
2743 | movdqu STATE3, 0x20(OUTP) |
2744 | ||
2745 | _aesni_gf128mul_x_ble() | |
2746 | movdqa IV, STATE3 | |
fe6510b5 JK |
2747 | movdqu 0x60(INP), INC |
2748 | pxor INC, STATE3 | |
c456a9cd JK |
2749 | movdqu IV, 0x60(OUTP) |
2750 | ||
fe6510b5 JK |
2751 | movdqu 0x30(OUTP), INC |
2752 | pxor INC, STATE4 | |
c456a9cd JK |
2753 | movdqu STATE4, 0x30(OUTP) |
2754 | ||
2755 | _aesni_gf128mul_x_ble() | |
2756 | movdqa IV, STATE4 | |
fe6510b5 JK |
2757 | movdqu 0x70(INP), INC |
2758 | pxor INC, STATE4 | |
c456a9cd JK |
2759 | movdqu IV, 0x70(OUTP) |
2760 | ||
2761 | _aesni_gf128mul_x_ble() | |
2762 | movups IV, (IVP) | |
2763 | ||
2764 | call *%r11 | |
2765 | ||
fe6510b5 JK |
2766 | movdqu 0x40(OUTP), INC |
2767 | pxor INC, STATE1 | |
c456a9cd JK |
2768 | movdqu STATE1, 0x40(OUTP) |
2769 | ||
fe6510b5 JK |
2770 | movdqu 0x50(OUTP), INC |
2771 | pxor INC, STATE2 | |
c456a9cd JK |
2772 | movdqu STATE2, 0x50(OUTP) |
2773 | ||
fe6510b5 JK |
2774 | movdqu 0x60(OUTP), INC |
2775 | pxor INC, STATE3 | |
c456a9cd JK |
2776 | movdqu STATE3, 0x60(OUTP) |
2777 | ||
fe6510b5 JK |
2778 | movdqu 0x70(OUTP), INC |
2779 | pxor INC, STATE4 | |
c456a9cd JK |
2780 | movdqu STATE4, 0x70(OUTP) |
2781 | ||
2782 | ret | |
2783 | ENDPROC(aesni_xts_crypt8) | |
2784 | ||
0d258efb | 2785 | #endif |