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Diffstat (limited to 'arch/arm/crypto/bsaes-armv7.pl')
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diff --git a/arch/arm/crypto/bsaes-armv7.pl b/arch/arm/crypto/bsaes-armv7.pl new file mode 100644 index 000000000000..f3d96d932573 --- /dev/null +++ b/arch/arm/crypto/bsaes-armv7.pl | |||
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1 | #!/usr/bin/env perl | ||
2 | |||
3 | # ==================================================================== | ||
4 | # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL | ||
5 | # project. The module is, however, dual licensed under OpenSSL and | ||
6 | # CRYPTOGAMS licenses depending on where you obtain it. For further | ||
7 | # details see http://www.openssl.org/~appro/cryptogams/. | ||
8 | # | ||
9 | # Specific modes and adaptation for Linux kernel by Ard Biesheuvel | ||
10 | # <ard.biesheuvel@linaro.org>. Permission to use under GPL terms is | ||
11 | # granted. | ||
12 | # ==================================================================== | ||
13 | |||
14 | # Bit-sliced AES for ARM NEON | ||
15 | # | ||
16 | # February 2012. | ||
17 | # | ||
18 | # This implementation is direct adaptation of bsaes-x86_64 module for | ||
19 | # ARM NEON. Except that this module is endian-neutral [in sense that | ||
20 | # it can be compiled for either endianness] by courtesy of vld1.8's | ||
21 | # neutrality. Initial version doesn't implement interface to OpenSSL, | ||
22 | # only low-level primitives and unsupported entry points, just enough | ||
23 | # to collect performance results, which for Cortex-A8 core are: | ||
24 | # | ||
25 | # encrypt 19.5 cycles per byte processed with 128-bit key | ||
26 | # decrypt 22.1 cycles per byte processed with 128-bit key | ||
27 | # key conv. 440 cycles per 128-bit key/0.18 of 8x block | ||
28 | # | ||
29 | # Snapdragon S4 encrypts byte in 17.6 cycles and decrypts in 19.7, | ||
30 | # which is [much] worse than anticipated (for further details see | ||
31 | # http://www.openssl.org/~appro/Snapdragon-S4.html). | ||
32 | # | ||
33 | # Cortex-A15 manages in 14.2/16.1 cycles [when integer-only code | ||
34 | # manages in 20.0 cycles]. | ||
35 | # | ||
36 | # When comparing to x86_64 results keep in mind that NEON unit is | ||
37 | # [mostly] single-issue and thus can't [fully] benefit from | ||
38 | # instruction-level parallelism. And when comparing to aes-armv4 | ||
39 | # results keep in mind key schedule conversion overhead (see | ||
40 | # bsaes-x86_64.pl for further details)... | ||
41 | # | ||
42 | # <appro@openssl.org> | ||
43 | |||
44 | # April-August 2013 | ||
45 | # | ||
46 | # Add CBC, CTR and XTS subroutines, adapt for kernel use. | ||
47 | # | ||
48 | # <ard.biesheuvel@linaro.org> | ||
49 | |||
50 | while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} | ||
51 | open STDOUT,">$output"; | ||
52 | |||
53 | my ($inp,$out,$len,$key)=("r0","r1","r2","r3"); | ||
54 | my @XMM=map("q$_",(0..15)); | ||
55 | |||
56 | { | ||
57 | my ($key,$rounds,$const)=("r4","r5","r6"); | ||
58 | |||
59 | sub Dlo() { shift=~m|q([1]?[0-9])|?"d".($1*2):""; } | ||
60 | sub Dhi() { shift=~m|q([1]?[0-9])|?"d".($1*2+1):""; } | ||
61 | |||
62 | sub Sbox { | ||
63 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | ||
64 | # output in lsb > [b0, b1, b4, b6, b3, b7, b2, b5] < msb | ||
65 | my @b=@_[0..7]; | ||
66 | my @t=@_[8..11]; | ||
67 | my @s=@_[12..15]; | ||
68 | &InBasisChange (@b); | ||
69 | &Inv_GF256 (@b[6,5,0,3,7,1,4,2],@t,@s); | ||
70 | &OutBasisChange (@b[7,1,4,2,6,5,0,3]); | ||
71 | } | ||
72 | |||
73 | sub InBasisChange { | ||
74 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | ||
75 | # output in lsb > [b6, b5, b0, b3, b7, b1, b4, b2] < msb | ||
76 | my @b=@_[0..7]; | ||
77 | $code.=<<___; | ||
78 | veor @b[2], @b[2], @b[1] | ||
79 | veor @b[5], @b[5], @b[6] | ||
80 | veor @b[3], @b[3], @b[0] | ||
81 | veor @b[6], @b[6], @b[2] | ||
82 | veor @b[5], @b[5], @b[0] | ||
83 | |||
84 | veor @b[6], @b[6], @b[3] | ||
85 | veor @b[3], @b[3], @b[7] | ||
86 | veor @b[7], @b[7], @b[5] | ||
87 | veor @b[3], @b[3], @b[4] | ||
88 | veor @b[4], @b[4], @b[5] | ||
89 | |||
90 | veor @b[2], @b[2], @b[7] | ||
91 | veor @b[3], @b[3], @b[1] | ||
92 | veor @b[1], @b[1], @b[5] | ||
93 | ___ | ||
94 | } | ||
95 | |||
96 | sub OutBasisChange { | ||
97 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | ||
98 | # output in lsb > [b6, b1, b2, b4, b7, b0, b3, b5] < msb | ||
99 | my @b=@_[0..7]; | ||
100 | $code.=<<___; | ||
101 | veor @b[0], @b[0], @b[6] | ||
102 | veor @b[1], @b[1], @b[4] | ||
103 | veor @b[4], @b[4], @b[6] | ||
104 | veor @b[2], @b[2], @b[0] | ||
105 | veor @b[6], @b[6], @b[1] | ||
106 | |||
107 | veor @b[1], @b[1], @b[5] | ||
108 | veor @b[5], @b[5], @b[3] | ||
109 | veor @b[3], @b[3], @b[7] | ||
110 | veor @b[7], @b[7], @b[5] | ||
111 | veor @b[2], @b[2], @b[5] | ||
112 | |||
113 | veor @b[4], @b[4], @b[7] | ||
114 | ___ | ||
115 | } | ||
116 | |||
117 | sub InvSbox { | ||
118 | # input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb | ||
119 | # output in lsb > [b0, b1, b6, b4, b2, b7, b3, b5] < msb | ||
120 | my @b=@_[0..7]; | ||
121 | my @t=@_[8..11]; | ||
122 | my @s=@_[12..15]; | ||
123 | &InvInBasisChange (@b); | ||
124 | &Inv_GF256 (@b[5,1,2,6,3,7,0,4],@t,@s); | ||
125 | &InvOutBasisChange (@b[3,7,0,4,5,1,2,6]); | ||
126 | } | ||
127 | |||
128 | sub InvInBasisChange { # OutBasisChange in reverse (with twist) | ||
129 | my @b=@_[5,1,2,6,3,7,0,4]; | ||
130 | $code.=<<___ | ||
131 | veor @b[1], @b[1], @b[7] | ||
132 | veor @b[4], @b[4], @b[7] | ||
133 | |||
134 | veor @b[7], @b[7], @b[5] | ||
135 | veor @b[1], @b[1], @b[3] | ||
136 | veor @b[2], @b[2], @b[5] | ||
137 | veor @b[3], @b[3], @b[7] | ||
138 | |||
139 | veor @b[6], @b[6], @b[1] | ||
140 | veor @b[2], @b[2], @b[0] | ||
141 | veor @b[5], @b[5], @b[3] | ||
142 | veor @b[4], @b[4], @b[6] | ||
143 | veor @b[0], @b[0], @b[6] | ||
144 | veor @b[1], @b[1], @b[4] | ||
145 | ___ | ||
146 | } | ||
147 | |||
148 | sub InvOutBasisChange { # InBasisChange in reverse | ||
149 | my @b=@_[2,5,7,3,6,1,0,4]; | ||
150 | $code.=<<___; | ||
151 | veor @b[1], @b[1], @b[5] | ||
152 | veor @b[2], @b[2], @b[7] | ||
153 | |||
154 | veor @b[3], @b[3], @b[1] | ||
155 | veor @b[4], @b[4], @b[5] | ||
156 | veor @b[7], @b[7], @b[5] | ||
157 | veor @b[3], @b[3], @b[4] | ||
158 | veor @b[5], @b[5], @b[0] | ||
159 | veor @b[3], @b[3], @b[7] | ||
160 | veor @b[6], @b[6], @b[2] | ||
161 | veor @b[2], @b[2], @b[1] | ||
162 | veor @b[6], @b[6], @b[3] | ||
163 | |||
164 | veor @b[3], @b[3], @b[0] | ||
165 | veor @b[5], @b[5], @b[6] | ||
166 | ___ | ||
167 | } | ||
168 | |||
169 | sub Mul_GF4 { | ||
170 | #;************************************************************* | ||
171 | #;* Mul_GF4: Input x0-x1,y0-y1 Output x0-x1 Temp t0 (8) * | ||
172 | #;************************************************************* | ||
173 | my ($x0,$x1,$y0,$y1,$t0,$t1)=@_; | ||
174 | $code.=<<___; | ||
175 | veor $t0, $y0, $y1 | ||
176 | vand $t0, $t0, $x0 | ||
177 | veor $x0, $x0, $x1 | ||
178 | vand $t1, $x1, $y0 | ||
179 | vand $x0, $x0, $y1 | ||
180 | veor $x1, $t1, $t0 | ||
181 | veor $x0, $x0, $t1 | ||
182 | ___ | ||
183 | } | ||
184 | |||
185 | sub Mul_GF4_N { # not used, see next subroutine | ||
186 | # multiply and scale by N | ||
187 | my ($x0,$x1,$y0,$y1,$t0)=@_; | ||
188 | $code.=<<___; | ||
189 | veor $t0, $y0, $y1 | ||
190 | vand $t0, $t0, $x0 | ||
191 | veor $x0, $x0, $x1 | ||
192 | vand $x1, $x1, $y0 | ||
193 | vand $x0, $x0, $y1 | ||
194 | veor $x1, $x1, $x0 | ||
195 | veor $x0, $x0, $t0 | ||
196 | ___ | ||
197 | } | ||
198 | |||
199 | sub Mul_GF4_N_GF4 { | ||
200 | # interleaved Mul_GF4_N and Mul_GF4 | ||
201 | my ($x0,$x1,$y0,$y1,$t0, | ||
202 | $x2,$x3,$y2,$y3,$t1)=@_; | ||
203 | $code.=<<___; | ||
204 | veor $t0, $y0, $y1 | ||
205 | veor $t1, $y2, $y3 | ||
206 | vand $t0, $t0, $x0 | ||
207 | vand $t1, $t1, $x2 | ||
208 | veor $x0, $x0, $x1 | ||
209 | veor $x2, $x2, $x3 | ||
210 | vand $x1, $x1, $y0 | ||
211 | vand $x3, $x3, $y2 | ||
212 | vand $x0, $x0, $y1 | ||
213 | vand $x2, $x2, $y3 | ||
214 | veor $x1, $x1, $x0 | ||
215 | veor $x2, $x2, $x3 | ||
216 | veor $x0, $x0, $t0 | ||
217 | veor $x3, $x3, $t1 | ||
218 | ___ | ||
219 | } | ||
220 | sub Mul_GF16_2 { | ||
221 | my @x=@_[0..7]; | ||
222 | my @y=@_[8..11]; | ||
223 | my @t=@_[12..15]; | ||
224 | $code.=<<___; | ||
225 | veor @t[0], @x[0], @x[2] | ||
226 | veor @t[1], @x[1], @x[3] | ||
227 | ___ | ||
228 | &Mul_GF4 (@x[0], @x[1], @y[0], @y[1], @t[2..3]); | ||
229 | $code.=<<___; | ||
230 | veor @y[0], @y[0], @y[2] | ||
231 | veor @y[1], @y[1], @y[3] | ||
232 | ___ | ||
233 | Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | ||
234 | @x[2], @x[3], @y[2], @y[3], @t[2]); | ||
235 | $code.=<<___; | ||
236 | veor @x[0], @x[0], @t[0] | ||
237 | veor @x[2], @x[2], @t[0] | ||
238 | veor @x[1], @x[1], @t[1] | ||
239 | veor @x[3], @x[3], @t[1] | ||
240 | |||
241 | veor @t[0], @x[4], @x[6] | ||
242 | veor @t[1], @x[5], @x[7] | ||
243 | ___ | ||
244 | &Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3], | ||
245 | @x[6], @x[7], @y[2], @y[3], @t[2]); | ||
246 | $code.=<<___; | ||
247 | veor @y[0], @y[0], @y[2] | ||
248 | veor @y[1], @y[1], @y[3] | ||
249 | ___ | ||
250 | &Mul_GF4 (@x[4], @x[5], @y[0], @y[1], @t[2..3]); | ||
251 | $code.=<<___; | ||
252 | veor @x[4], @x[4], @t[0] | ||
253 | veor @x[6], @x[6], @t[0] | ||
254 | veor @x[5], @x[5], @t[1] | ||
255 | veor @x[7], @x[7], @t[1] | ||
256 | ___ | ||
257 | } | ||
258 | sub Inv_GF256 { | ||
259 | #;******************************************************************** | ||
260 | #;* Inv_GF256: Input x0-x7 Output x0-x7 Temp t0-t3,s0-s3 (144) * | ||
261 | #;******************************************************************** | ||
262 | my @x=@_[0..7]; | ||
263 | my @t=@_[8..11]; | ||
264 | my @s=@_[12..15]; | ||
265 | # direct optimizations from hardware | ||
266 | $code.=<<___; | ||
267 | veor @t[3], @x[4], @x[6] | ||
268 | veor @t[2], @x[5], @x[7] | ||
269 | veor @t[1], @x[1], @x[3] | ||
270 | veor @s[1], @x[7], @x[6] | ||
271 | vmov @t[0], @t[2] | ||
272 | veor @s[0], @x[0], @x[2] | ||
273 | |||
274 | vorr @t[2], @t[2], @t[1] | ||
275 | veor @s[3], @t[3], @t[0] | ||
276 | vand @s[2], @t[3], @s[0] | ||
277 | vorr @t[3], @t[3], @s[0] | ||
278 | veor @s[0], @s[0], @t[1] | ||
279 | vand @t[0], @t[0], @t[1] | ||
280 | veor @t[1], @x[3], @x[2] | ||
281 | vand @s[3], @s[3], @s[0] | ||
282 | vand @s[1], @s[1], @t[1] | ||
283 | veor @t[1], @x[4], @x[5] | ||
284 | veor @s[0], @x[1], @x[0] | ||
285 | veor @t[3], @t[3], @s[1] | ||
286 | veor @t[2], @t[2], @s[1] | ||
287 | vand @s[1], @t[1], @s[0] | ||
288 | vorr @t[1], @t[1], @s[0] | ||
289 | veor @t[3], @t[3], @s[3] | ||
290 | veor @t[0], @t[0], @s[1] | ||
291 | veor @t[2], @t[2], @s[2] | ||
292 | veor @t[1], @t[1], @s[3] | ||
293 | veor @t[0], @t[0], @s[2] | ||
294 | vand @s[0], @x[7], @x[3] | ||
295 | veor @t[1], @t[1], @s[2] | ||
296 | vand @s[1], @x[6], @x[2] | ||
297 | vand @s[2], @x[5], @x[1] | ||
298 | vorr @s[3], @x[4], @x[0] | ||
299 | veor @t[3], @t[3], @s[0] | ||
300 | veor @t[1], @t[1], @s[2] | ||
301 | veor @t[0], @t[0], @s[3] | ||
302 | veor @t[2], @t[2], @s[1] | ||
303 | |||
304 | @ Inv_GF16 \t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3 | ||
305 | |||
306 | @ new smaller inversion | ||
307 | |||
308 | vand @s[2], @t[3], @t[1] | ||
309 | vmov @s[0], @t[0] | ||
310 | |||
311 | veor @s[1], @t[2], @s[2] | ||
312 | veor @s[3], @t[0], @s[2] | ||
313 | veor @s[2], @t[0], @s[2] @ @s[2]=@s[3] | ||
314 | |||
315 | vbsl @s[1], @t[1], @t[0] | ||
316 | vbsl @s[3], @t[3], @t[2] | ||
317 | veor @t[3], @t[3], @t[2] | ||
318 | |||
319 | vbsl @s[0], @s[1], @s[2] | ||
320 | vbsl @t[0], @s[2], @s[1] | ||
321 | |||
322 | vand @s[2], @s[0], @s[3] | ||
323 | veor @t[1], @t[1], @t[0] | ||
324 | |||
325 | veor @s[2], @s[2], @t[3] | ||
326 | ___ | ||
327 | # output in s3, s2, s1, t1 | ||
328 | |||
329 | # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \t2, \t3, \t0, \t1, \s0, \s1, \s2, \s3 | ||
330 | |||
331 | # Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3 | ||
332 | &Mul_GF16_2(@x,@s[3,2,1],@t[1],@s[0],@t[0,2,3]); | ||
333 | |||
334 | ### output msb > [x3,x2,x1,x0,x7,x6,x5,x4] < lsb | ||
335 | } | ||
336 | |||
337 | # AES linear components | ||
338 | |||
339 | sub ShiftRows { | ||
340 | my @x=@_[0..7]; | ||
341 | my @t=@_[8..11]; | ||
342 | my $mask=pop; | ||
343 | $code.=<<___; | ||
344 | vldmia $key!, {@t[0]-@t[3]} | ||
345 | veor @t[0], @t[0], @x[0] | ||
346 | veor @t[1], @t[1], @x[1] | ||
347 | vtbl.8 `&Dlo(@x[0])`, {@t[0]}, `&Dlo($mask)` | ||
348 | vtbl.8 `&Dhi(@x[0])`, {@t[0]}, `&Dhi($mask)` | ||
349 | vldmia $key!, {@t[0]} | ||
350 | veor @t[2], @t[2], @x[2] | ||
351 | vtbl.8 `&Dlo(@x[1])`, {@t[1]}, `&Dlo($mask)` | ||
352 | vtbl.8 `&Dhi(@x[1])`, {@t[1]}, `&Dhi($mask)` | ||
353 | vldmia $key!, {@t[1]} | ||
354 | veor @t[3], @t[3], @x[3] | ||
355 | vtbl.8 `&Dlo(@x[2])`, {@t[2]}, `&Dlo($mask)` | ||
356 | vtbl.8 `&Dhi(@x[2])`, {@t[2]}, `&Dhi($mask)` | ||
357 | vldmia $key!, {@t[2]} | ||
358 | vtbl.8 `&Dlo(@x[3])`, {@t[3]}, `&Dlo($mask)` | ||
359 | vtbl.8 `&Dhi(@x[3])`, {@t[3]}, `&Dhi($mask)` | ||
360 | vldmia $key!, {@t[3]} | ||
361 | veor @t[0], @t[0], @x[4] | ||
362 | veor @t[1], @t[1], @x[5] | ||
363 | vtbl.8 `&Dlo(@x[4])`, {@t[0]}, `&Dlo($mask)` | ||
364 | vtbl.8 `&Dhi(@x[4])`, {@t[0]}, `&Dhi($mask)` | ||
365 | veor @t[2], @t[2], @x[6] | ||
366 | vtbl.8 `&Dlo(@x[5])`, {@t[1]}, `&Dlo($mask)` | ||
367 | vtbl.8 `&Dhi(@x[5])`, {@t[1]}, `&Dhi($mask)` | ||
368 | veor @t[3], @t[3], @x[7] | ||
369 | vtbl.8 `&Dlo(@x[6])`, {@t[2]}, `&Dlo($mask)` | ||
370 | vtbl.8 `&Dhi(@x[6])`, {@t[2]}, `&Dhi($mask)` | ||
371 | vtbl.8 `&Dlo(@x[7])`, {@t[3]}, `&Dlo($mask)` | ||
372 | vtbl.8 `&Dhi(@x[7])`, {@t[3]}, `&Dhi($mask)` | ||
373 | ___ | ||
374 | } | ||
375 | |||
376 | sub MixColumns { | ||
377 | # modified to emit output in order suitable for feeding back to aesenc[last] | ||
378 | my @x=@_[0..7]; | ||
379 | my @t=@_[8..15]; | ||
380 | my $inv=@_[16]; # optional | ||
381 | $code.=<<___; | ||
382 | vext.8 @t[0], @x[0], @x[0], #12 @ x0 <<< 32 | ||
383 | vext.8 @t[1], @x[1], @x[1], #12 | ||
384 | veor @x[0], @x[0], @t[0] @ x0 ^ (x0 <<< 32) | ||
385 | vext.8 @t[2], @x[2], @x[2], #12 | ||
386 | veor @x[1], @x[1], @t[1] | ||
387 | vext.8 @t[3], @x[3], @x[3], #12 | ||
388 | veor @x[2], @x[2], @t[2] | ||
389 | vext.8 @t[4], @x[4], @x[4], #12 | ||
390 | veor @x[3], @x[3], @t[3] | ||
391 | vext.8 @t[5], @x[5], @x[5], #12 | ||
392 | veor @x[4], @x[4], @t[4] | ||
393 | vext.8 @t[6], @x[6], @x[6], #12 | ||
394 | veor @x[5], @x[5], @t[5] | ||
395 | vext.8 @t[7], @x[7], @x[7], #12 | ||
396 | veor @x[6], @x[6], @t[6] | ||
397 | |||
398 | veor @t[1], @t[1], @x[0] | ||
399 | veor @x[7], @x[7], @t[7] | ||
400 | vext.8 @x[0], @x[0], @x[0], #8 @ (x0 ^ (x0 <<< 32)) <<< 64) | ||
401 | veor @t[2], @t[2], @x[1] | ||
402 | veor @t[0], @t[0], @x[7] | ||
403 | veor @t[1], @t[1], @x[7] | ||
404 | vext.8 @x[1], @x[1], @x[1], #8 | ||
405 | veor @t[5], @t[5], @x[4] | ||
406 | veor @x[0], @x[0], @t[0] | ||
407 | veor @t[6], @t[6], @x[5] | ||
408 | veor @x[1], @x[1], @t[1] | ||
409 | vext.8 @t[0], @x[4], @x[4], #8 | ||
410 | veor @t[4], @t[4], @x[3] | ||
411 | vext.8 @t[1], @x[5], @x[5], #8 | ||
412 | veor @t[7], @t[7], @x[6] | ||
413 | vext.8 @x[4], @x[3], @x[3], #8 | ||
414 | veor @t[3], @t[3], @x[2] | ||
415 | vext.8 @x[5], @x[7], @x[7], #8 | ||
416 | veor @t[4], @t[4], @x[7] | ||
417 | vext.8 @x[3], @x[6], @x[6], #8 | ||
418 | veor @t[3], @t[3], @x[7] | ||
419 | vext.8 @x[6], @x[2], @x[2], #8 | ||
420 | veor @x[7], @t[1], @t[5] | ||
421 | ___ | ||
422 | $code.=<<___ if (!$inv); | ||
423 | veor @x[2], @t[0], @t[4] | ||
424 | veor @x[4], @x[4], @t[3] | ||
425 | veor @x[5], @x[5], @t[7] | ||
426 | veor @x[3], @x[3], @t[6] | ||
427 | @ vmov @x[2], @t[0] | ||
428 | veor @x[6], @x[6], @t[2] | ||
429 | @ vmov @x[7], @t[1] | ||
430 | ___ | ||
431 | $code.=<<___ if ($inv); | ||
432 | veor @t[3], @t[3], @x[4] | ||
433 | veor @x[5], @x[5], @t[7] | ||
434 | veor @x[2], @x[3], @t[6] | ||
435 | veor @x[3], @t[0], @t[4] | ||
436 | veor @x[4], @x[6], @t[2] | ||
437 | vmov @x[6], @t[3] | ||
438 | @ vmov @x[7], @t[1] | ||
439 | ___ | ||
440 | } | ||
441 | |||
442 | sub InvMixColumns_orig { | ||
443 | my @x=@_[0..7]; | ||
444 | my @t=@_[8..15]; | ||
445 | |||
446 | $code.=<<___; | ||
447 | @ multiplication by 0x0e | ||
448 | vext.8 @t[7], @x[7], @x[7], #12 | ||
449 | vmov @t[2], @x[2] | ||
450 | veor @x[2], @x[2], @x[5] @ 2 5 | ||
451 | veor @x[7], @x[7], @x[5] @ 7 5 | ||
452 | vext.8 @t[0], @x[0], @x[0], #12 | ||
453 | vmov @t[5], @x[5] | ||
454 | veor @x[5], @x[5], @x[0] @ 5 0 [1] | ||
455 | veor @x[0], @x[0], @x[1] @ 0 1 | ||
456 | vext.8 @t[1], @x[1], @x[1], #12 | ||
457 | veor @x[1], @x[1], @x[2] @ 1 25 | ||
458 | veor @x[0], @x[0], @x[6] @ 01 6 [2] | ||
459 | vext.8 @t[3], @x[3], @x[3], #12 | ||
460 | veor @x[1], @x[1], @x[3] @ 125 3 [4] | ||
461 | veor @x[2], @x[2], @x[0] @ 25 016 [3] | ||
462 | veor @x[3], @x[3], @x[7] @ 3 75 | ||
463 | veor @x[7], @x[7], @x[6] @ 75 6 [0] | ||
464 | vext.8 @t[6], @x[6], @x[6], #12 | ||
465 | vmov @t[4], @x[4] | ||
466 | veor @x[6], @x[6], @x[4] @ 6 4 | ||
467 | veor @x[4], @x[4], @x[3] @ 4 375 [6] | ||
468 | veor @x[3], @x[3], @x[7] @ 375 756=36 | ||
469 | veor @x[6], @x[6], @t[5] @ 64 5 [7] | ||
470 | veor @x[3], @x[3], @t[2] @ 36 2 | ||
471 | vext.8 @t[5], @t[5], @t[5], #12 | ||
472 | veor @x[3], @x[3], @t[4] @ 362 4 [5] | ||
473 | ___ | ||
474 | my @y = @x[7,5,0,2,1,3,4,6]; | ||
475 | $code.=<<___; | ||
476 | @ multiplication by 0x0b | ||
477 | veor @y[1], @y[1], @y[0] | ||
478 | veor @y[0], @y[0], @t[0] | ||
479 | vext.8 @t[2], @t[2], @t[2], #12 | ||
480 | veor @y[1], @y[1], @t[1] | ||
481 | veor @y[0], @y[0], @t[5] | ||
482 | vext.8 @t[4], @t[4], @t[4], #12 | ||
483 | veor @y[1], @y[1], @t[6] | ||
484 | veor @y[0], @y[0], @t[7] | ||
485 | veor @t[7], @t[7], @t[6] @ clobber t[7] | ||
486 | |||
487 | veor @y[3], @y[3], @t[0] | ||
488 | veor @y[1], @y[1], @y[0] | ||
489 | vext.8 @t[0], @t[0], @t[0], #12 | ||
490 | veor @y[2], @y[2], @t[1] | ||
491 | veor @y[4], @y[4], @t[1] | ||
492 | vext.8 @t[1], @t[1], @t[1], #12 | ||
493 | veor @y[2], @y[2], @t[2] | ||
494 | veor @y[3], @y[3], @t[2] | ||
495 | veor @y[5], @y[5], @t[2] | ||
496 | veor @y[2], @y[2], @t[7] | ||
497 | vext.8 @t[2], @t[2], @t[2], #12 | ||
498 | veor @y[3], @y[3], @t[3] | ||
499 | veor @y[6], @y[6], @t[3] | ||
500 | veor @y[4], @y[4], @t[3] | ||
501 | veor @y[7], @y[7], @t[4] | ||
502 | vext.8 @t[3], @t[3], @t[3], #12 | ||
503 | veor @y[5], @y[5], @t[4] | ||
504 | veor @y[7], @y[7], @t[7] | ||
505 | veor @t[7], @t[7], @t[5] @ clobber t[7] even more | ||
506 | veor @y[3], @y[3], @t[5] | ||
507 | veor @y[4], @y[4], @t[4] | ||
508 | |||
509 | veor @y[5], @y[5], @t[7] | ||
510 | vext.8 @t[4], @t[4], @t[4], #12 | ||
511 | veor @y[6], @y[6], @t[7] | ||
512 | veor @y[4], @y[4], @t[7] | ||
513 | |||
514 | veor @t[7], @t[7], @t[5] | ||
515 | vext.8 @t[5], @t[5], @t[5], #12 | ||
516 | |||
517 | @ multiplication by 0x0d | ||
518 | veor @y[4], @y[4], @y[7] | ||
519 | veor @t[7], @t[7], @t[6] @ restore t[7] | ||
520 | veor @y[7], @y[7], @t[4] | ||
521 | vext.8 @t[6], @t[6], @t[6], #12 | ||
522 | veor @y[2], @y[2], @t[0] | ||
523 | veor @y[7], @y[7], @t[5] | ||
524 | vext.8 @t[7], @t[7], @t[7], #12 | ||
525 | veor @y[2], @y[2], @t[2] | ||
526 | |||
527 | veor @y[3], @y[3], @y[1] | ||
528 | veor @y[1], @y[1], @t[1] | ||
529 | veor @y[0], @y[0], @t[0] | ||
530 | veor @y[3], @y[3], @t[0] | ||
531 | veor @y[1], @y[1], @t[5] | ||
532 | veor @y[0], @y[0], @t[5] | ||
533 | vext.8 @t[0], @t[0], @t[0], #12 | ||
534 | veor @y[1], @y[1], @t[7] | ||
535 | veor @y[0], @y[0], @t[6] | ||
536 | veor @y[3], @y[3], @y[1] | ||
537 | veor @y[4], @y[4], @t[1] | ||
538 | vext.8 @t[1], @t[1], @t[1], #12 | ||
539 | |||
540 | veor @y[7], @y[7], @t[7] | ||
541 | veor @y[4], @y[4], @t[2] | ||
542 | veor @y[5], @y[5], @t[2] | ||
543 | veor @y[2], @y[2], @t[6] | ||
544 | veor @t[6], @t[6], @t[3] @ clobber t[6] | ||
545 | vext.8 @t[2], @t[2], @t[2], #12 | ||
546 | veor @y[4], @y[4], @y[7] | ||
547 | veor @y[3], @y[3], @t[6] | ||
548 | |||
549 | veor @y[6], @y[6], @t[6] | ||
550 | veor @y[5], @y[5], @t[5] | ||
551 | vext.8 @t[5], @t[5], @t[5], #12 | ||
552 | veor @y[6], @y[6], @t[4] | ||
553 | vext.8 @t[4], @t[4], @t[4], #12 | ||
554 | veor @y[5], @y[5], @t[6] | ||
555 | veor @y[6], @y[6], @t[7] | ||
556 | vext.8 @t[7], @t[7], @t[7], #12 | ||
557 | veor @t[6], @t[6], @t[3] @ restore t[6] | ||
558 | vext.8 @t[3], @t[3], @t[3], #12 | ||
559 | |||
560 | @ multiplication by 0x09 | ||
561 | veor @y[4], @y[4], @y[1] | ||
562 | veor @t[1], @t[1], @y[1] @ t[1]=y[1] | ||
563 | veor @t[0], @t[0], @t[5] @ clobber t[0] | ||
564 | vext.8 @t[6], @t[6], @t[6], #12 | ||
565 | veor @t[1], @t[1], @t[5] | ||
566 | veor @y[3], @y[3], @t[0] | ||
567 | veor @t[0], @t[0], @y[0] @ t[0]=y[0] | ||
568 | veor @t[1], @t[1], @t[6] | ||
569 | veor @t[6], @t[6], @t[7] @ clobber t[6] | ||
570 | veor @y[4], @y[4], @t[1] | ||
571 | veor @y[7], @y[7], @t[4] | ||
572 | veor @y[6], @y[6], @t[3] | ||
573 | veor @y[5], @y[5], @t[2] | ||
574 | veor @t[4], @t[4], @y[4] @ t[4]=y[4] | ||
575 | veor @t[3], @t[3], @y[3] @ t[3]=y[3] | ||
576 | veor @t[5], @t[5], @y[5] @ t[5]=y[5] | ||
577 | veor @t[2], @t[2], @y[2] @ t[2]=y[2] | ||
578 | veor @t[3], @t[3], @t[7] | ||
579 | veor @XMM[5], @t[5], @t[6] | ||
580 | veor @XMM[6], @t[6], @y[6] @ t[6]=y[6] | ||
581 | veor @XMM[2], @t[2], @t[6] | ||
582 | veor @XMM[7], @t[7], @y[7] @ t[7]=y[7] | ||
583 | |||
584 | vmov @XMM[0], @t[0] | ||
585 | vmov @XMM[1], @t[1] | ||
586 | @ vmov @XMM[2], @t[2] | ||
587 | vmov @XMM[3], @t[3] | ||
588 | vmov @XMM[4], @t[4] | ||
589 | @ vmov @XMM[5], @t[5] | ||
590 | @ vmov @XMM[6], @t[6] | ||
591 | @ vmov @XMM[7], @t[7] | ||
592 | ___ | ||
593 | } | ||
594 | |||
595 | sub InvMixColumns { | ||
596 | my @x=@_[0..7]; | ||
597 | my @t=@_[8..15]; | ||
598 | |||
599 | # Thanks to Jussi Kivilinna for providing pointer to | ||
600 | # | ||
601 | # | 0e 0b 0d 09 | | 02 03 01 01 | | 05 00 04 00 | | ||
602 | # | 09 0e 0b 0d | = | 01 02 03 01 | x | 00 05 00 04 | | ||
603 | # | 0d 09 0e 0b | | 01 01 02 03 | | 04 00 05 00 | | ||
604 | # | 0b 0d 09 0e | | 03 01 01 02 | | 00 04 00 05 | | ||
605 | |||
606 | $code.=<<___; | ||
607 | @ multiplication by 0x05-0x00-0x04-0x00 | ||
608 | vext.8 @t[0], @x[0], @x[0], #8 | ||
609 | vext.8 @t[6], @x[6], @x[6], #8 | ||
610 | vext.8 @t[7], @x[7], @x[7], #8 | ||
611 | veor @t[0], @t[0], @x[0] | ||
612 | vext.8 @t[1], @x[1], @x[1], #8 | ||
613 | veor @t[6], @t[6], @x[6] | ||
614 | vext.8 @t[2], @x[2], @x[2], #8 | ||
615 | veor @t[7], @t[7], @x[7] | ||
616 | vext.8 @t[3], @x[3], @x[3], #8 | ||
617 | veor @t[1], @t[1], @x[1] | ||
618 | vext.8 @t[4], @x[4], @x[4], #8 | ||
619 | veor @t[2], @t[2], @x[2] | ||
620 | vext.8 @t[5], @x[5], @x[5], #8 | ||
621 | veor @t[3], @t[3], @x[3] | ||
622 | veor @t[4], @t[4], @x[4] | ||
623 | veor @t[5], @t[5], @x[5] | ||
624 | |||
625 | veor @x[0], @x[0], @t[6] | ||
626 | veor @x[1], @x[1], @t[6] | ||
627 | veor @x[2], @x[2], @t[0] | ||
628 | veor @x[4], @x[4], @t[2] | ||
629 | veor @x[3], @x[3], @t[1] | ||
630 | veor @x[1], @x[1], @t[7] | ||
631 | veor @x[2], @x[2], @t[7] | ||
632 | veor @x[4], @x[4], @t[6] | ||
633 | veor @x[5], @x[5], @t[3] | ||
634 | veor @x[3], @x[3], @t[6] | ||
635 | veor @x[6], @x[6], @t[4] | ||
636 | veor @x[4], @x[4], @t[7] | ||
637 | veor @x[5], @x[5], @t[7] | ||
638 | veor @x[7], @x[7], @t[5] | ||
639 | ___ | ||
640 | &MixColumns (@x,@t,1); # flipped 2<->3 and 4<->6 | ||
641 | } | ||
642 | |||
643 | sub swapmove { | ||
644 | my ($a,$b,$n,$mask,$t)=@_; | ||
645 | $code.=<<___; | ||
646 | vshr.u64 $t, $b, #$n | ||
647 | veor $t, $t, $a | ||
648 | vand $t, $t, $mask | ||
649 | veor $a, $a, $t | ||
650 | vshl.u64 $t, $t, #$n | ||
651 | veor $b, $b, $t | ||
652 | ___ | ||
653 | } | ||
654 | sub swapmove2x { | ||
655 | my ($a0,$b0,$a1,$b1,$n,$mask,$t0,$t1)=@_; | ||
656 | $code.=<<___; | ||
657 | vshr.u64 $t0, $b0, #$n | ||
658 | vshr.u64 $t1, $b1, #$n | ||
659 | veor $t0, $t0, $a0 | ||
660 | veor $t1, $t1, $a1 | ||
661 | vand $t0, $t0, $mask | ||
662 | vand $t1, $t1, $mask | ||
663 | veor $a0, $a0, $t0 | ||
664 | vshl.u64 $t0, $t0, #$n | ||
665 | veor $a1, $a1, $t1 | ||
666 | vshl.u64 $t1, $t1, #$n | ||
667 | veor $b0, $b0, $t0 | ||
668 | veor $b1, $b1, $t1 | ||
669 | ___ | ||
670 | } | ||
671 | |||
672 | sub bitslice { | ||
673 | my @x=reverse(@_[0..7]); | ||
674 | my ($t0,$t1,$t2,$t3)=@_[8..11]; | ||
675 | $code.=<<___; | ||
676 | vmov.i8 $t0,#0x55 @ compose .LBS0 | ||
677 | vmov.i8 $t1,#0x33 @ compose .LBS1 | ||
678 | ___ | ||
679 | &swapmove2x(@x[0,1,2,3],1,$t0,$t2,$t3); | ||
680 | &swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | ||
681 | $code.=<<___; | ||
682 | vmov.i8 $t0,#0x0f @ compose .LBS2 | ||
683 | ___ | ||
684 | &swapmove2x(@x[0,2,1,3],2,$t1,$t2,$t3); | ||
685 | &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | ||
686 | |||
687 | &swapmove2x(@x[0,4,1,5],4,$t0,$t2,$t3); | ||
688 | &swapmove2x(@x[2,6,3,7],4,$t0,$t2,$t3); | ||
689 | } | ||
690 | |||
691 | $code.=<<___; | ||
692 | #ifndef __KERNEL__ | ||
693 | # include "arm_arch.h" | ||
694 | |||
695 | # define VFP_ABI_PUSH vstmdb sp!,{d8-d15} | ||
696 | # define VFP_ABI_POP vldmia sp!,{d8-d15} | ||
697 | # define VFP_ABI_FRAME 0x40 | ||
698 | #else | ||
699 | # define VFP_ABI_PUSH | ||
700 | # define VFP_ABI_POP | ||
701 | # define VFP_ABI_FRAME 0 | ||
702 | # define BSAES_ASM_EXTENDED_KEY | ||
703 | # define XTS_CHAIN_TWEAK | ||
704 | # define __ARM_ARCH__ __LINUX_ARM_ARCH__ | ||
705 | #endif | ||
706 | |||
707 | #ifdef __thumb__ | ||
708 | # define adrl adr | ||
709 | #endif | ||
710 | |||
711 | #if __ARM_ARCH__>=7 | ||
712 | .text | ||
713 | .syntax unified @ ARMv7-capable assembler is expected to handle this | ||
714 | #ifdef __thumb2__ | ||
715 | .thumb | ||
716 | #else | ||
717 | .code 32 | ||
718 | #endif | ||
719 | |||
720 | .fpu neon | ||
721 | |||
722 | .type _bsaes_decrypt8,%function | ||
723 | .align 4 | ||
724 | _bsaes_decrypt8: | ||
725 | adr $const,_bsaes_decrypt8 | ||
726 | vldmia $key!, {@XMM[9]} @ round 0 key | ||
727 | add $const,$const,#.LM0ISR-_bsaes_decrypt8 | ||
728 | |||
729 | vldmia $const!, {@XMM[8]} @ .LM0ISR | ||
730 | veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key | ||
731 | veor @XMM[11], @XMM[1], @XMM[9] | ||
732 | vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | ||
733 | vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | ||
734 | veor @XMM[12], @XMM[2], @XMM[9] | ||
735 | vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | ||
736 | vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | ||
737 | veor @XMM[13], @XMM[3], @XMM[9] | ||
738 | vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | ||
739 | vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | ||
740 | veor @XMM[14], @XMM[4], @XMM[9] | ||
741 | vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | ||
742 | vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | ||
743 | veor @XMM[15], @XMM[5], @XMM[9] | ||
744 | vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | ||
745 | vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | ||
746 | veor @XMM[10], @XMM[6], @XMM[9] | ||
747 | vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | ||
748 | vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | ||
749 | veor @XMM[11], @XMM[7], @XMM[9] | ||
750 | vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | ||
751 | vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | ||
752 | vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | ||
753 | vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | ||
754 | ___ | ||
755 | &bitslice (@XMM[0..7, 8..11]); | ||
756 | $code.=<<___; | ||
757 | sub $rounds,$rounds,#1 | ||
758 | b .Ldec_sbox | ||
759 | .align 4 | ||
760 | .Ldec_loop: | ||
761 | ___ | ||
762 | &ShiftRows (@XMM[0..7, 8..12]); | ||
763 | $code.=".Ldec_sbox:\n"; | ||
764 | &InvSbox (@XMM[0..7, 8..15]); | ||
765 | $code.=<<___; | ||
766 | subs $rounds,$rounds,#1 | ||
767 | bcc .Ldec_done | ||
768 | ___ | ||
769 | &InvMixColumns (@XMM[0,1,6,4,2,7,3,5, 8..15]); | ||
770 | $code.=<<___; | ||
771 | vldmia $const, {@XMM[12]} @ .LISR | ||
772 | ite eq @ Thumb2 thing, sanity check in ARM | ||
773 | addeq $const,$const,#0x10 | ||
774 | bne .Ldec_loop | ||
775 | vldmia $const, {@XMM[12]} @ .LISRM0 | ||
776 | b .Ldec_loop | ||
777 | .align 4 | ||
778 | .Ldec_done: | ||
779 | ___ | ||
780 | &bitslice (@XMM[0,1,6,4,2,7,3,5, 8..11]); | ||
781 | $code.=<<___; | ||
782 | vldmia $key, {@XMM[8]} @ last round key | ||
783 | veor @XMM[6], @XMM[6], @XMM[8] | ||
784 | veor @XMM[4], @XMM[4], @XMM[8] | ||
785 | veor @XMM[2], @XMM[2], @XMM[8] | ||
786 | veor @XMM[7], @XMM[7], @XMM[8] | ||
787 | veor @XMM[3], @XMM[3], @XMM[8] | ||
788 | veor @XMM[5], @XMM[5], @XMM[8] | ||
789 | veor @XMM[0], @XMM[0], @XMM[8] | ||
790 | veor @XMM[1], @XMM[1], @XMM[8] | ||
791 | bx lr | ||
792 | .size _bsaes_decrypt8,.-_bsaes_decrypt8 | ||
793 | |||
794 | .type _bsaes_const,%object | ||
795 | .align 6 | ||
796 | _bsaes_const: | ||
797 | .LM0ISR: @ InvShiftRows constants | ||
798 | .quad 0x0a0e0206070b0f03, 0x0004080c0d010509 | ||
799 | .LISR: | ||
800 | .quad 0x0504070602010003, 0x0f0e0d0c080b0a09 | ||
801 | .LISRM0: | ||
802 | .quad 0x01040b0e0205080f, 0x0306090c00070a0d | ||
803 | .LM0SR: @ ShiftRows constants | ||
804 | .quad 0x0a0e02060f03070b, 0x0004080c05090d01 | ||
805 | .LSR: | ||
806 | .quad 0x0504070600030201, 0x0f0e0d0c0a09080b | ||
807 | .LSRM0: | ||
808 | .quad 0x0304090e00050a0f, 0x01060b0c0207080d | ||
809 | .LM0: | ||
810 | .quad 0x02060a0e03070b0f, 0x0004080c0105090d | ||
811 | .LREVM0SR: | ||
812 | .quad 0x090d01050c000408, 0x03070b0f060a0e02 | ||
813 | .asciz "Bit-sliced AES for NEON, CRYPTOGAMS by <appro\@openssl.org>" | ||
814 | .align 6 | ||
815 | .size _bsaes_const,.-_bsaes_const | ||
816 | |||
817 | .type _bsaes_encrypt8,%function | ||
818 | .align 4 | ||
819 | _bsaes_encrypt8: | ||
820 | adr $const,_bsaes_encrypt8 | ||
821 | vldmia $key!, {@XMM[9]} @ round 0 key | ||
822 | sub $const,$const,#_bsaes_encrypt8-.LM0SR | ||
823 | |||
824 | vldmia $const!, {@XMM[8]} @ .LM0SR | ||
825 | _bsaes_encrypt8_alt: | ||
826 | veor @XMM[10], @XMM[0], @XMM[9] @ xor with round0 key | ||
827 | veor @XMM[11], @XMM[1], @XMM[9] | ||
828 | vtbl.8 `&Dlo(@XMM[0])`, {@XMM[10]}, `&Dlo(@XMM[8])` | ||
829 | vtbl.8 `&Dhi(@XMM[0])`, {@XMM[10]}, `&Dhi(@XMM[8])` | ||
830 | veor @XMM[12], @XMM[2], @XMM[9] | ||
831 | vtbl.8 `&Dlo(@XMM[1])`, {@XMM[11]}, `&Dlo(@XMM[8])` | ||
832 | vtbl.8 `&Dhi(@XMM[1])`, {@XMM[11]}, `&Dhi(@XMM[8])` | ||
833 | veor @XMM[13], @XMM[3], @XMM[9] | ||
834 | vtbl.8 `&Dlo(@XMM[2])`, {@XMM[12]}, `&Dlo(@XMM[8])` | ||
835 | vtbl.8 `&Dhi(@XMM[2])`, {@XMM[12]}, `&Dhi(@XMM[8])` | ||
836 | veor @XMM[14], @XMM[4], @XMM[9] | ||
837 | vtbl.8 `&Dlo(@XMM[3])`, {@XMM[13]}, `&Dlo(@XMM[8])` | ||
838 | vtbl.8 `&Dhi(@XMM[3])`, {@XMM[13]}, `&Dhi(@XMM[8])` | ||
839 | veor @XMM[15], @XMM[5], @XMM[9] | ||
840 | vtbl.8 `&Dlo(@XMM[4])`, {@XMM[14]}, `&Dlo(@XMM[8])` | ||
841 | vtbl.8 `&Dhi(@XMM[4])`, {@XMM[14]}, `&Dhi(@XMM[8])` | ||
842 | veor @XMM[10], @XMM[6], @XMM[9] | ||
843 | vtbl.8 `&Dlo(@XMM[5])`, {@XMM[15]}, `&Dlo(@XMM[8])` | ||
844 | vtbl.8 `&Dhi(@XMM[5])`, {@XMM[15]}, `&Dhi(@XMM[8])` | ||
845 | veor @XMM[11], @XMM[7], @XMM[9] | ||
846 | vtbl.8 `&Dlo(@XMM[6])`, {@XMM[10]}, `&Dlo(@XMM[8])` | ||
847 | vtbl.8 `&Dhi(@XMM[6])`, {@XMM[10]}, `&Dhi(@XMM[8])` | ||
848 | vtbl.8 `&Dlo(@XMM[7])`, {@XMM[11]}, `&Dlo(@XMM[8])` | ||
849 | vtbl.8 `&Dhi(@XMM[7])`, {@XMM[11]}, `&Dhi(@XMM[8])` | ||
850 | _bsaes_encrypt8_bitslice: | ||
851 | ___ | ||
852 | &bitslice (@XMM[0..7, 8..11]); | ||
853 | $code.=<<___; | ||
854 | sub $rounds,$rounds,#1 | ||
855 | b .Lenc_sbox | ||
856 | .align 4 | ||
857 | .Lenc_loop: | ||
858 | ___ | ||
859 | &ShiftRows (@XMM[0..7, 8..12]); | ||
860 | $code.=".Lenc_sbox:\n"; | ||
861 | &Sbox (@XMM[0..7, 8..15]); | ||
862 | $code.=<<___; | ||
863 | subs $rounds,$rounds,#1 | ||
864 | bcc .Lenc_done | ||
865 | ___ | ||
866 | &MixColumns (@XMM[0,1,4,6,3,7,2,5, 8..15]); | ||
867 | $code.=<<___; | ||
868 | vldmia $const, {@XMM[12]} @ .LSR | ||
869 | ite eq @ Thumb2 thing, samity check in ARM | ||
870 | addeq $const,$const,#0x10 | ||
871 | bne .Lenc_loop | ||
872 | vldmia $const, {@XMM[12]} @ .LSRM0 | ||
873 | b .Lenc_loop | ||
874 | .align 4 | ||
875 | .Lenc_done: | ||
876 | ___ | ||
877 | # output in lsb > [t0, t1, t4, t6, t3, t7, t2, t5] < msb | ||
878 | &bitslice (@XMM[0,1,4,6,3,7,2,5, 8..11]); | ||
879 | $code.=<<___; | ||
880 | vldmia $key, {@XMM[8]} @ last round key | ||
881 | veor @XMM[4], @XMM[4], @XMM[8] | ||
882 | veor @XMM[6], @XMM[6], @XMM[8] | ||
883 | veor @XMM[3], @XMM[3], @XMM[8] | ||
884 | veor @XMM[7], @XMM[7], @XMM[8] | ||
885 | veor @XMM[2], @XMM[2], @XMM[8] | ||
886 | veor @XMM[5], @XMM[5], @XMM[8] | ||
887 | veor @XMM[0], @XMM[0], @XMM[8] | ||
888 | veor @XMM[1], @XMM[1], @XMM[8] | ||
889 | bx lr | ||
890 | .size _bsaes_encrypt8,.-_bsaes_encrypt8 | ||
891 | ___ | ||
892 | } | ||
893 | { | ||
894 | my ($out,$inp,$rounds,$const)=("r12","r4","r5","r6"); | ||
895 | |||
896 | sub bitslice_key { | ||
897 | my @x=reverse(@_[0..7]); | ||
898 | my ($bs0,$bs1,$bs2,$t2,$t3)=@_[8..12]; | ||
899 | |||
900 | &swapmove (@x[0,1],1,$bs0,$t2,$t3); | ||
901 | $code.=<<___; | ||
902 | @ &swapmove(@x[2,3],1,$t0,$t2,$t3); | ||
903 | vmov @x[2], @x[0] | ||
904 | vmov @x[3], @x[1] | ||
905 | ___ | ||
906 | #&swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3); | ||
907 | |||
908 | &swapmove2x (@x[0,2,1,3],2,$bs1,$t2,$t3); | ||
909 | $code.=<<___; | ||
910 | @ &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3); | ||
911 | vmov @x[4], @x[0] | ||
912 | vmov @x[6], @x[2] | ||
913 | vmov @x[5], @x[1] | ||
914 | vmov @x[7], @x[3] | ||
915 | ___ | ||
916 | &swapmove2x (@x[0,4,1,5],4,$bs2,$t2,$t3); | ||
917 | &swapmove2x (@x[2,6,3,7],4,$bs2,$t2,$t3); | ||
918 | } | ||
919 | |||
920 | $code.=<<___; | ||
921 | .type _bsaes_key_convert,%function | ||
922 | .align 4 | ||
923 | _bsaes_key_convert: | ||
924 | adr $const,_bsaes_key_convert | ||
925 | vld1.8 {@XMM[7]}, [$inp]! @ load round 0 key | ||
926 | sub $const,$const,#_bsaes_key_convert-.LM0 | ||
927 | vld1.8 {@XMM[15]}, [$inp]! @ load round 1 key | ||
928 | |||
929 | vmov.i8 @XMM[8], #0x01 @ bit masks | ||
930 | vmov.i8 @XMM[9], #0x02 | ||
931 | vmov.i8 @XMM[10], #0x04 | ||
932 | vmov.i8 @XMM[11], #0x08 | ||
933 | vmov.i8 @XMM[12], #0x10 | ||
934 | vmov.i8 @XMM[13], #0x20 | ||
935 | vldmia $const, {@XMM[14]} @ .LM0 | ||
936 | |||
937 | #ifdef __ARMEL__ | ||
938 | vrev32.8 @XMM[7], @XMM[7] | ||
939 | vrev32.8 @XMM[15], @XMM[15] | ||
940 | #endif | ||
941 | sub $rounds,$rounds,#1 | ||
942 | vstmia $out!, {@XMM[7]} @ save round 0 key | ||
943 | b .Lkey_loop | ||
944 | |||
945 | .align 4 | ||
946 | .Lkey_loop: | ||
947 | vtbl.8 `&Dlo(@XMM[7])`,{@XMM[15]},`&Dlo(@XMM[14])` | ||
948 | vtbl.8 `&Dhi(@XMM[7])`,{@XMM[15]},`&Dhi(@XMM[14])` | ||
949 | vmov.i8 @XMM[6], #0x40 | ||
950 | vmov.i8 @XMM[15], #0x80 | ||
951 | |||
952 | vtst.8 @XMM[0], @XMM[7], @XMM[8] | ||
953 | vtst.8 @XMM[1], @XMM[7], @XMM[9] | ||
954 | vtst.8 @XMM[2], @XMM[7], @XMM[10] | ||
955 | vtst.8 @XMM[3], @XMM[7], @XMM[11] | ||
956 | vtst.8 @XMM[4], @XMM[7], @XMM[12] | ||
957 | vtst.8 @XMM[5], @XMM[7], @XMM[13] | ||
958 | vtst.8 @XMM[6], @XMM[7], @XMM[6] | ||
959 | vtst.8 @XMM[7], @XMM[7], @XMM[15] | ||
960 | vld1.8 {@XMM[15]}, [$inp]! @ load next round key | ||
961 | vmvn @XMM[0], @XMM[0] @ "pnot" | ||
962 | vmvn @XMM[1], @XMM[1] | ||
963 | vmvn @XMM[5], @XMM[5] | ||
964 | vmvn @XMM[6], @XMM[6] | ||
965 | #ifdef __ARMEL__ | ||
966 | vrev32.8 @XMM[15], @XMM[15] | ||
967 | #endif | ||
968 | subs $rounds,$rounds,#1 | ||
969 | vstmia $out!,{@XMM[0]-@XMM[7]} @ write bit-sliced round key | ||
970 | bne .Lkey_loop | ||
971 | |||
972 | vmov.i8 @XMM[7],#0x63 @ compose .L63 | ||
973 | @ don't save last round key | ||
974 | bx lr | ||
975 | .size _bsaes_key_convert,.-_bsaes_key_convert | ||
976 | ___ | ||
977 | } | ||
978 | |||
979 | if (0) { # following four functions are unsupported interface | ||
980 | # used for benchmarking... | ||
981 | $code.=<<___; | ||
982 | .globl bsaes_enc_key_convert | ||
983 | .type bsaes_enc_key_convert,%function | ||
984 | .align 4 | ||
985 | bsaes_enc_key_convert: | ||
986 | stmdb sp!,{r4-r6,lr} | ||
987 | vstmdb sp!,{d8-d15} @ ABI specification says so | ||
988 | |||
989 | ldr r5,[$inp,#240] @ pass rounds | ||
990 | mov r4,$inp @ pass key | ||
991 | mov r12,$out @ pass key schedule | ||
992 | bl _bsaes_key_convert | ||
993 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | ||
994 | vstmia r12, {@XMM[7]} @ save last round key | ||
995 | |||
996 | vldmia sp!,{d8-d15} | ||
997 | ldmia sp!,{r4-r6,pc} | ||
998 | .size bsaes_enc_key_convert,.-bsaes_enc_key_convert | ||
999 | |||
1000 | .globl bsaes_encrypt_128 | ||
1001 | .type bsaes_encrypt_128,%function | ||
1002 | .align 4 | ||
1003 | bsaes_encrypt_128: | ||
1004 | stmdb sp!,{r4-r6,lr} | ||
1005 | vstmdb sp!,{d8-d15} @ ABI specification says so | ||
1006 | .Lenc128_loop: | ||
1007 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | ||
1008 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | ||
1009 | mov r4,$key @ pass the key | ||
1010 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | ||
1011 | mov r5,#10 @ pass rounds | ||
1012 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | ||
1013 | |||
1014 | bl _bsaes_encrypt8 | ||
1015 | |||
1016 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1017 | vst1.8 {@XMM[4]}, [$out]! | ||
1018 | vst1.8 {@XMM[6]}, [$out]! | ||
1019 | vst1.8 {@XMM[3]}, [$out]! | ||
1020 | vst1.8 {@XMM[7]}, [$out]! | ||
1021 | vst1.8 {@XMM[2]}, [$out]! | ||
1022 | subs $len,$len,#0x80 | ||
1023 | vst1.8 {@XMM[5]}, [$out]! | ||
1024 | bhi .Lenc128_loop | ||
1025 | |||
1026 | vldmia sp!,{d8-d15} | ||
1027 | ldmia sp!,{r4-r6,pc} | ||
1028 | .size bsaes_encrypt_128,.-bsaes_encrypt_128 | ||
1029 | |||
1030 | .globl bsaes_dec_key_convert | ||
1031 | .type bsaes_dec_key_convert,%function | ||
1032 | .align 4 | ||
1033 | bsaes_dec_key_convert: | ||
1034 | stmdb sp!,{r4-r6,lr} | ||
1035 | vstmdb sp!,{d8-d15} @ ABI specification says so | ||
1036 | |||
1037 | ldr r5,[$inp,#240] @ pass rounds | ||
1038 | mov r4,$inp @ pass key | ||
1039 | mov r12,$out @ pass key schedule | ||
1040 | bl _bsaes_key_convert | ||
1041 | vldmia $out, {@XMM[6]} | ||
1042 | vstmia r12, {@XMM[15]} @ save last round key | ||
1043 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | ||
1044 | vstmia $out, {@XMM[7]} | ||
1045 | |||
1046 | vldmia sp!,{d8-d15} | ||
1047 | ldmia sp!,{r4-r6,pc} | ||
1048 | .size bsaes_dec_key_convert,.-bsaes_dec_key_convert | ||
1049 | |||
1050 | .globl bsaes_decrypt_128 | ||
1051 | .type bsaes_decrypt_128,%function | ||
1052 | .align 4 | ||
1053 | bsaes_decrypt_128: | ||
1054 | stmdb sp!,{r4-r6,lr} | ||
1055 | vstmdb sp!,{d8-d15} @ ABI specification says so | ||
1056 | .Ldec128_loop: | ||
1057 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | ||
1058 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | ||
1059 | mov r4,$key @ pass the key | ||
1060 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | ||
1061 | mov r5,#10 @ pass rounds | ||
1062 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | ||
1063 | |||
1064 | bl _bsaes_decrypt8 | ||
1065 | |||
1066 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1067 | vst1.8 {@XMM[6]}, [$out]! | ||
1068 | vst1.8 {@XMM[4]}, [$out]! | ||
1069 | vst1.8 {@XMM[2]}, [$out]! | ||
1070 | vst1.8 {@XMM[7]}, [$out]! | ||
1071 | vst1.8 {@XMM[3]}, [$out]! | ||
1072 | subs $len,$len,#0x80 | ||
1073 | vst1.8 {@XMM[5]}, [$out]! | ||
1074 | bhi .Ldec128_loop | ||
1075 | |||
1076 | vldmia sp!,{d8-d15} | ||
1077 | ldmia sp!,{r4-r6,pc} | ||
1078 | .size bsaes_decrypt_128,.-bsaes_decrypt_128 | ||
1079 | ___ | ||
1080 | } | ||
1081 | { | ||
1082 | my ($inp,$out,$len,$key, $ivp,$fp,$rounds)=map("r$_",(0..3,8..10)); | ||
1083 | my ($keysched)=("sp"); | ||
1084 | |||
1085 | $code.=<<___; | ||
1086 | .extern AES_cbc_encrypt | ||
1087 | .extern AES_decrypt | ||
1088 | |||
1089 | .global bsaes_cbc_encrypt | ||
1090 | .type bsaes_cbc_encrypt,%function | ||
1091 | .align 5 | ||
1092 | bsaes_cbc_encrypt: | ||
1093 | #ifndef __KERNEL__ | ||
1094 | cmp $len, #128 | ||
1095 | #ifndef __thumb__ | ||
1096 | blo AES_cbc_encrypt | ||
1097 | #else | ||
1098 | bhs 1f | ||
1099 | b AES_cbc_encrypt | ||
1100 | 1: | ||
1101 | #endif | ||
1102 | #endif | ||
1103 | |||
1104 | @ it is up to the caller to make sure we are called with enc == 0 | ||
1105 | |||
1106 | mov ip, sp | ||
1107 | stmdb sp!, {r4-r10, lr} | ||
1108 | VFP_ABI_PUSH | ||
1109 | ldr $ivp, [ip] @ IV is 1st arg on the stack | ||
1110 | mov $len, $len, lsr#4 @ len in 16 byte blocks | ||
1111 | sub sp, #0x10 @ scratch space to carry over the IV | ||
1112 | mov $fp, sp @ save sp | ||
1113 | |||
1114 | ldr $rounds, [$key, #240] @ get # of rounds | ||
1115 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1116 | @ allocate the key schedule on the stack | ||
1117 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | ||
1118 | add r12, #`128-32` @ sifze of bit-slices key schedule | ||
1119 | |||
1120 | @ populate the key schedule | ||
1121 | mov r4, $key @ pass key | ||
1122 | mov r5, $rounds @ pass # of rounds | ||
1123 | mov sp, r12 @ sp is $keysched | ||
1124 | bl _bsaes_key_convert | ||
1125 | vldmia $keysched, {@XMM[6]} | ||
1126 | vstmia r12, {@XMM[15]} @ save last round key | ||
1127 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | ||
1128 | vstmia $keysched, {@XMM[7]} | ||
1129 | #else | ||
1130 | ldr r12, [$key, #244] | ||
1131 | eors r12, #1 | ||
1132 | beq 0f | ||
1133 | |||
1134 | @ populate the key schedule | ||
1135 | str r12, [$key, #244] | ||
1136 | mov r4, $key @ pass key | ||
1137 | mov r5, $rounds @ pass # of rounds | ||
1138 | add r12, $key, #248 @ pass key schedule | ||
1139 | bl _bsaes_key_convert | ||
1140 | add r4, $key, #248 | ||
1141 | vldmia r4, {@XMM[6]} | ||
1142 | vstmia r12, {@XMM[15]} @ save last round key | ||
1143 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | ||
1144 | vstmia r4, {@XMM[7]} | ||
1145 | |||
1146 | .align 2 | ||
1147 | 0: | ||
1148 | #endif | ||
1149 | |||
1150 | vld1.8 {@XMM[15]}, [$ivp] @ load IV | ||
1151 | b .Lcbc_dec_loop | ||
1152 | |||
1153 | .align 4 | ||
1154 | .Lcbc_dec_loop: | ||
1155 | subs $len, $len, #0x8 | ||
1156 | bmi .Lcbc_dec_loop_finish | ||
1157 | |||
1158 | vld1.8 {@XMM[0]-@XMM[1]}, [$inp]! @ load input | ||
1159 | vld1.8 {@XMM[2]-@XMM[3]}, [$inp]! | ||
1160 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1161 | mov r4, $keysched @ pass the key | ||
1162 | #else | ||
1163 | add r4, $key, #248 | ||
1164 | #endif | ||
1165 | vld1.8 {@XMM[4]-@XMM[5]}, [$inp]! | ||
1166 | mov r5, $rounds | ||
1167 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp] | ||
1168 | sub $inp, $inp, #0x60 | ||
1169 | vstmia $fp, {@XMM[15]} @ put aside IV | ||
1170 | |||
1171 | bl _bsaes_decrypt8 | ||
1172 | |||
1173 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1174 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1175 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1176 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | ||
1177 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1178 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1179 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | ||
1180 | veor @XMM[4], @XMM[4], @XMM[10] | ||
1181 | veor @XMM[2], @XMM[2], @XMM[11] | ||
1182 | vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | ||
1183 | veor @XMM[7], @XMM[7], @XMM[12] | ||
1184 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1185 | veor @XMM[3], @XMM[3], @XMM[13] | ||
1186 | vst1.8 {@XMM[6]}, [$out]! | ||
1187 | veor @XMM[5], @XMM[5], @XMM[14] | ||
1188 | vst1.8 {@XMM[4]}, [$out]! | ||
1189 | vst1.8 {@XMM[2]}, [$out]! | ||
1190 | vst1.8 {@XMM[7]}, [$out]! | ||
1191 | vst1.8 {@XMM[3]}, [$out]! | ||
1192 | vst1.8 {@XMM[5]}, [$out]! | ||
1193 | |||
1194 | b .Lcbc_dec_loop | ||
1195 | |||
1196 | .Lcbc_dec_loop_finish: | ||
1197 | adds $len, $len, #8 | ||
1198 | beq .Lcbc_dec_done | ||
1199 | |||
1200 | vld1.8 {@XMM[0]}, [$inp]! @ load input | ||
1201 | cmp $len, #2 | ||
1202 | blo .Lcbc_dec_one | ||
1203 | vld1.8 {@XMM[1]}, [$inp]! | ||
1204 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1205 | mov r4, $keysched @ pass the key | ||
1206 | #else | ||
1207 | add r4, $key, #248 | ||
1208 | #endif | ||
1209 | mov r5, $rounds | ||
1210 | vstmia $fp, {@XMM[15]} @ put aside IV | ||
1211 | beq .Lcbc_dec_two | ||
1212 | vld1.8 {@XMM[2]}, [$inp]! | ||
1213 | cmp $len, #4 | ||
1214 | blo .Lcbc_dec_three | ||
1215 | vld1.8 {@XMM[3]}, [$inp]! | ||
1216 | beq .Lcbc_dec_four | ||
1217 | vld1.8 {@XMM[4]}, [$inp]! | ||
1218 | cmp $len, #6 | ||
1219 | blo .Lcbc_dec_five | ||
1220 | vld1.8 {@XMM[5]}, [$inp]! | ||
1221 | beq .Lcbc_dec_six | ||
1222 | vld1.8 {@XMM[6]}, [$inp]! | ||
1223 | sub $inp, $inp, #0x70 | ||
1224 | |||
1225 | bl _bsaes_decrypt8 | ||
1226 | |||
1227 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1228 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1229 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1230 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | ||
1231 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1232 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1233 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | ||
1234 | veor @XMM[4], @XMM[4], @XMM[10] | ||
1235 | veor @XMM[2], @XMM[2], @XMM[11] | ||
1236 | vld1.8 {@XMM[15]}, [$inp]! | ||
1237 | veor @XMM[7], @XMM[7], @XMM[12] | ||
1238 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1239 | veor @XMM[3], @XMM[3], @XMM[13] | ||
1240 | vst1.8 {@XMM[6]}, [$out]! | ||
1241 | vst1.8 {@XMM[4]}, [$out]! | ||
1242 | vst1.8 {@XMM[2]}, [$out]! | ||
1243 | vst1.8 {@XMM[7]}, [$out]! | ||
1244 | vst1.8 {@XMM[3]}, [$out]! | ||
1245 | b .Lcbc_dec_done | ||
1246 | .align 4 | ||
1247 | .Lcbc_dec_six: | ||
1248 | sub $inp, $inp, #0x60 | ||
1249 | bl _bsaes_decrypt8 | ||
1250 | vldmia $fp,{@XMM[14]} @ reload IV | ||
1251 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1252 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1253 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | ||
1254 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1255 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1256 | vld1.8 {@XMM[12]}, [$inp]! | ||
1257 | veor @XMM[4], @XMM[4], @XMM[10] | ||
1258 | veor @XMM[2], @XMM[2], @XMM[11] | ||
1259 | vld1.8 {@XMM[15]}, [$inp]! | ||
1260 | veor @XMM[7], @XMM[7], @XMM[12] | ||
1261 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1262 | vst1.8 {@XMM[6]}, [$out]! | ||
1263 | vst1.8 {@XMM[4]}, [$out]! | ||
1264 | vst1.8 {@XMM[2]}, [$out]! | ||
1265 | vst1.8 {@XMM[7]}, [$out]! | ||
1266 | b .Lcbc_dec_done | ||
1267 | .align 4 | ||
1268 | .Lcbc_dec_five: | ||
1269 | sub $inp, $inp, #0x50 | ||
1270 | bl _bsaes_decrypt8 | ||
1271 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1272 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1273 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1274 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | ||
1275 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1276 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1277 | vld1.8 {@XMM[15]}, [$inp]! | ||
1278 | veor @XMM[4], @XMM[4], @XMM[10] | ||
1279 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1280 | veor @XMM[2], @XMM[2], @XMM[11] | ||
1281 | vst1.8 {@XMM[6]}, [$out]! | ||
1282 | vst1.8 {@XMM[4]}, [$out]! | ||
1283 | vst1.8 {@XMM[2]}, [$out]! | ||
1284 | b .Lcbc_dec_done | ||
1285 | .align 4 | ||
1286 | .Lcbc_dec_four: | ||
1287 | sub $inp, $inp, #0x40 | ||
1288 | bl _bsaes_decrypt8 | ||
1289 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1290 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1291 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1292 | vld1.8 {@XMM[10]}, [$inp]! | ||
1293 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1294 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1295 | vld1.8 {@XMM[15]}, [$inp]! | ||
1296 | veor @XMM[4], @XMM[4], @XMM[10] | ||
1297 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1298 | vst1.8 {@XMM[6]}, [$out]! | ||
1299 | vst1.8 {@XMM[4]}, [$out]! | ||
1300 | b .Lcbc_dec_done | ||
1301 | .align 4 | ||
1302 | .Lcbc_dec_three: | ||
1303 | sub $inp, $inp, #0x30 | ||
1304 | bl _bsaes_decrypt8 | ||
1305 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1306 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ reload input | ||
1307 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1308 | vld1.8 {@XMM[15]}, [$inp]! | ||
1309 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1310 | veor @XMM[6], @XMM[6], @XMM[9] | ||
1311 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1312 | vst1.8 {@XMM[6]}, [$out]! | ||
1313 | b .Lcbc_dec_done | ||
1314 | .align 4 | ||
1315 | .Lcbc_dec_two: | ||
1316 | sub $inp, $inp, #0x20 | ||
1317 | bl _bsaes_decrypt8 | ||
1318 | vldmia $fp, {@XMM[14]} @ reload IV | ||
1319 | vld1.8 {@XMM[8]}, [$inp]! @ reload input | ||
1320 | veor @XMM[0], @XMM[0], @XMM[14] @ ^= IV | ||
1321 | vld1.8 {@XMM[15]}, [$inp]! @ reload input | ||
1322 | veor @XMM[1], @XMM[1], @XMM[8] | ||
1323 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1324 | b .Lcbc_dec_done | ||
1325 | .align 4 | ||
1326 | .Lcbc_dec_one: | ||
1327 | sub $inp, $inp, #0x10 | ||
1328 | mov $rounds, $out @ save original out pointer | ||
1329 | mov $out, $fp @ use the iv scratch space as out buffer | ||
1330 | mov r2, $key | ||
1331 | vmov @XMM[4],@XMM[15] @ just in case ensure that IV | ||
1332 | vmov @XMM[5],@XMM[0] @ and input are preserved | ||
1333 | bl AES_decrypt | ||
1334 | vld1.8 {@XMM[0]}, [$fp,:64] @ load result | ||
1335 | veor @XMM[0], @XMM[0], @XMM[4] @ ^= IV | ||
1336 | vmov @XMM[15], @XMM[5] @ @XMM[5] holds input | ||
1337 | vst1.8 {@XMM[0]}, [$rounds] @ write output | ||
1338 | |||
1339 | .Lcbc_dec_done: | ||
1340 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1341 | vmov.i32 q0, #0 | ||
1342 | vmov.i32 q1, #0 | ||
1343 | .Lcbc_dec_bzero: @ wipe key schedule [if any] | ||
1344 | vstmia $keysched!, {q0-q1} | ||
1345 | cmp $keysched, $fp | ||
1346 | bne .Lcbc_dec_bzero | ||
1347 | #endif | ||
1348 | |||
1349 | mov sp, $fp | ||
1350 | add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | ||
1351 | vst1.8 {@XMM[15]}, [$ivp] @ return IV | ||
1352 | VFP_ABI_POP | ||
1353 | ldmia sp!, {r4-r10, pc} | ||
1354 | .size bsaes_cbc_encrypt,.-bsaes_cbc_encrypt | ||
1355 | ___ | ||
1356 | } | ||
1357 | { | ||
1358 | my ($inp,$out,$len,$key, $ctr,$fp,$rounds)=(map("r$_",(0..3,8..10))); | ||
1359 | my $const = "r6"; # shared with _bsaes_encrypt8_alt | ||
1360 | my $keysched = "sp"; | ||
1361 | |||
1362 | $code.=<<___; | ||
1363 | .extern AES_encrypt | ||
1364 | .global bsaes_ctr32_encrypt_blocks | ||
1365 | .type bsaes_ctr32_encrypt_blocks,%function | ||
1366 | .align 5 | ||
1367 | bsaes_ctr32_encrypt_blocks: | ||
1368 | cmp $len, #8 @ use plain AES for | ||
1369 | blo .Lctr_enc_short @ small sizes | ||
1370 | |||
1371 | mov ip, sp | ||
1372 | stmdb sp!, {r4-r10, lr} | ||
1373 | VFP_ABI_PUSH | ||
1374 | ldr $ctr, [ip] @ ctr is 1st arg on the stack | ||
1375 | sub sp, sp, #0x10 @ scratch space to carry over the ctr | ||
1376 | mov $fp, sp @ save sp | ||
1377 | |||
1378 | ldr $rounds, [$key, #240] @ get # of rounds | ||
1379 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1380 | @ allocate the key schedule on the stack | ||
1381 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | ||
1382 | add r12, #`128-32` @ size of bit-sliced key schedule | ||
1383 | |||
1384 | @ populate the key schedule | ||
1385 | mov r4, $key @ pass key | ||
1386 | mov r5, $rounds @ pass # of rounds | ||
1387 | mov sp, r12 @ sp is $keysched | ||
1388 | bl _bsaes_key_convert | ||
1389 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | ||
1390 | vstmia r12, {@XMM[7]} @ save last round key | ||
1391 | |||
1392 | vld1.8 {@XMM[0]}, [$ctr] @ load counter | ||
1393 | add $ctr, $const, #.LREVM0SR-.LM0 @ borrow $ctr | ||
1394 | vldmia $keysched, {@XMM[4]} @ load round0 key | ||
1395 | #else | ||
1396 | ldr r12, [$key, #244] | ||
1397 | eors r12, #1 | ||
1398 | beq 0f | ||
1399 | |||
1400 | @ populate the key schedule | ||
1401 | str r12, [$key, #244] | ||
1402 | mov r4, $key @ pass key | ||
1403 | mov r5, $rounds @ pass # of rounds | ||
1404 | add r12, $key, #248 @ pass key schedule | ||
1405 | bl _bsaes_key_convert | ||
1406 | veor @XMM[7],@XMM[7],@XMM[15] @ fix up last round key | ||
1407 | vstmia r12, {@XMM[7]} @ save last round key | ||
1408 | |||
1409 | .align 2 | ||
1410 | 0: add r12, $key, #248 | ||
1411 | vld1.8 {@XMM[0]}, [$ctr] @ load counter | ||
1412 | adrl $ctr, .LREVM0SR @ borrow $ctr | ||
1413 | vldmia r12, {@XMM[4]} @ load round0 key | ||
1414 | sub sp, #0x10 @ place for adjusted round0 key | ||
1415 | #endif | ||
1416 | |||
1417 | vmov.i32 @XMM[8],#1 @ compose 1<<96 | ||
1418 | veor @XMM[9],@XMM[9],@XMM[9] | ||
1419 | vrev32.8 @XMM[0],@XMM[0] | ||
1420 | vext.8 @XMM[8],@XMM[9],@XMM[8],#4 | ||
1421 | vrev32.8 @XMM[4],@XMM[4] | ||
1422 | vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 | ||
1423 | vstmia $keysched, {@XMM[4]} @ save adjusted round0 key | ||
1424 | b .Lctr_enc_loop | ||
1425 | |||
1426 | .align 4 | ||
1427 | .Lctr_enc_loop: | ||
1428 | vadd.u32 @XMM[10], @XMM[8], @XMM[9] @ compose 3<<96 | ||
1429 | vadd.u32 @XMM[1], @XMM[0], @XMM[8] @ +1 | ||
1430 | vadd.u32 @XMM[2], @XMM[0], @XMM[9] @ +2 | ||
1431 | vadd.u32 @XMM[3], @XMM[0], @XMM[10] @ +3 | ||
1432 | vadd.u32 @XMM[4], @XMM[1], @XMM[10] | ||
1433 | vadd.u32 @XMM[5], @XMM[2], @XMM[10] | ||
1434 | vadd.u32 @XMM[6], @XMM[3], @XMM[10] | ||
1435 | vadd.u32 @XMM[7], @XMM[4], @XMM[10] | ||
1436 | vadd.u32 @XMM[10], @XMM[5], @XMM[10] @ next counter | ||
1437 | |||
1438 | @ Borrow prologue from _bsaes_encrypt8 to use the opportunity | ||
1439 | @ to flip byte order in 32-bit counter | ||
1440 | |||
1441 | vldmia $keysched, {@XMM[9]} @ load round0 key | ||
1442 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1443 | add r4, $keysched, #0x10 @ pass next round key | ||
1444 | #else | ||
1445 | add r4, $key, #`248+16` | ||
1446 | #endif | ||
1447 | vldmia $ctr, {@XMM[8]} @ .LREVM0SR | ||
1448 | mov r5, $rounds @ pass rounds | ||
1449 | vstmia $fp, {@XMM[10]} @ save next counter | ||
1450 | sub $const, $ctr, #.LREVM0SR-.LSR @ pass constants | ||
1451 | |||
1452 | bl _bsaes_encrypt8_alt | ||
1453 | |||
1454 | subs $len, $len, #8 | ||
1455 | blo .Lctr_enc_loop_done | ||
1456 | |||
1457 | vld1.8 {@XMM[8]-@XMM[9]}, [$inp]! @ load input | ||
1458 | vld1.8 {@XMM[10]-@XMM[11]}, [$inp]! | ||
1459 | veor @XMM[0], @XMM[8] | ||
1460 | veor @XMM[1], @XMM[9] | ||
1461 | vld1.8 {@XMM[12]-@XMM[13]}, [$inp]! | ||
1462 | veor @XMM[4], @XMM[10] | ||
1463 | veor @XMM[6], @XMM[11] | ||
1464 | vld1.8 {@XMM[14]-@XMM[15]}, [$inp]! | ||
1465 | veor @XMM[3], @XMM[12] | ||
1466 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! @ write output | ||
1467 | veor @XMM[7], @XMM[13] | ||
1468 | veor @XMM[2], @XMM[14] | ||
1469 | vst1.8 {@XMM[4]}, [$out]! | ||
1470 | veor @XMM[5], @XMM[15] | ||
1471 | vst1.8 {@XMM[6]}, [$out]! | ||
1472 | vmov.i32 @XMM[8], #1 @ compose 1<<96 | ||
1473 | vst1.8 {@XMM[3]}, [$out]! | ||
1474 | veor @XMM[9], @XMM[9], @XMM[9] | ||
1475 | vst1.8 {@XMM[7]}, [$out]! | ||
1476 | vext.8 @XMM[8], @XMM[9], @XMM[8], #4 | ||
1477 | vst1.8 {@XMM[2]}, [$out]! | ||
1478 | vadd.u32 @XMM[9],@XMM[8],@XMM[8] @ compose 2<<96 | ||
1479 | vst1.8 {@XMM[5]}, [$out]! | ||
1480 | vldmia $fp, {@XMM[0]} @ load counter | ||
1481 | |||
1482 | bne .Lctr_enc_loop | ||
1483 | b .Lctr_enc_done | ||
1484 | |||
1485 | .align 4 | ||
1486 | .Lctr_enc_loop_done: | ||
1487 | add $len, $len, #8 | ||
1488 | vld1.8 {@XMM[8]}, [$inp]! @ load input | ||
1489 | veor @XMM[0], @XMM[8] | ||
1490 | vst1.8 {@XMM[0]}, [$out]! @ write output | ||
1491 | cmp $len, #2 | ||
1492 | blo .Lctr_enc_done | ||
1493 | vld1.8 {@XMM[9]}, [$inp]! | ||
1494 | veor @XMM[1], @XMM[9] | ||
1495 | vst1.8 {@XMM[1]}, [$out]! | ||
1496 | beq .Lctr_enc_done | ||
1497 | vld1.8 {@XMM[10]}, [$inp]! | ||
1498 | veor @XMM[4], @XMM[10] | ||
1499 | vst1.8 {@XMM[4]}, [$out]! | ||
1500 | cmp $len, #4 | ||
1501 | blo .Lctr_enc_done | ||
1502 | vld1.8 {@XMM[11]}, [$inp]! | ||
1503 | veor @XMM[6], @XMM[11] | ||
1504 | vst1.8 {@XMM[6]}, [$out]! | ||
1505 | beq .Lctr_enc_done | ||
1506 | vld1.8 {@XMM[12]}, [$inp]! | ||
1507 | veor @XMM[3], @XMM[12] | ||
1508 | vst1.8 {@XMM[3]}, [$out]! | ||
1509 | cmp $len, #6 | ||
1510 | blo .Lctr_enc_done | ||
1511 | vld1.8 {@XMM[13]}, [$inp]! | ||
1512 | veor @XMM[7], @XMM[13] | ||
1513 | vst1.8 {@XMM[7]}, [$out]! | ||
1514 | beq .Lctr_enc_done | ||
1515 | vld1.8 {@XMM[14]}, [$inp] | ||
1516 | veor @XMM[2], @XMM[14] | ||
1517 | vst1.8 {@XMM[2]}, [$out]! | ||
1518 | |||
1519 | .Lctr_enc_done: | ||
1520 | vmov.i32 q0, #0 | ||
1521 | vmov.i32 q1, #0 | ||
1522 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1523 | .Lctr_enc_bzero: @ wipe key schedule [if any] | ||
1524 | vstmia $keysched!, {q0-q1} | ||
1525 | cmp $keysched, $fp | ||
1526 | bne .Lctr_enc_bzero | ||
1527 | #else | ||
1528 | vstmia $keysched, {q0-q1} | ||
1529 | #endif | ||
1530 | |||
1531 | mov sp, $fp | ||
1532 | add sp, #0x10 @ add sp,$fp,#0x10 is no good for thumb | ||
1533 | VFP_ABI_POP | ||
1534 | ldmia sp!, {r4-r10, pc} @ return | ||
1535 | |||
1536 | .align 4 | ||
1537 | .Lctr_enc_short: | ||
1538 | ldr ip, [sp] @ ctr pointer is passed on stack | ||
1539 | stmdb sp!, {r4-r8, lr} | ||
1540 | |||
1541 | mov r4, $inp @ copy arguments | ||
1542 | mov r5, $out | ||
1543 | mov r6, $len | ||
1544 | mov r7, $key | ||
1545 | ldr r8, [ip, #12] @ load counter LSW | ||
1546 | vld1.8 {@XMM[1]}, [ip] @ load whole counter value | ||
1547 | #ifdef __ARMEL__ | ||
1548 | rev r8, r8 | ||
1549 | #endif | ||
1550 | sub sp, sp, #0x10 | ||
1551 | vst1.8 {@XMM[1]}, [sp,:64] @ copy counter value | ||
1552 | sub sp, sp, #0x10 | ||
1553 | |||
1554 | .Lctr_enc_short_loop: | ||
1555 | add r0, sp, #0x10 @ input counter value | ||
1556 | mov r1, sp @ output on the stack | ||
1557 | mov r2, r7 @ key | ||
1558 | |||
1559 | bl AES_encrypt | ||
1560 | |||
1561 | vld1.8 {@XMM[0]}, [r4]! @ load input | ||
1562 | vld1.8 {@XMM[1]}, [sp,:64] @ load encrypted counter | ||
1563 | add r8, r8, #1 | ||
1564 | #ifdef __ARMEL__ | ||
1565 | rev r0, r8 | ||
1566 | str r0, [sp, #0x1c] @ next counter value | ||
1567 | #else | ||
1568 | str r8, [sp, #0x1c] @ next counter value | ||
1569 | #endif | ||
1570 | veor @XMM[0],@XMM[0],@XMM[1] | ||
1571 | vst1.8 {@XMM[0]}, [r5]! @ store output | ||
1572 | subs r6, r6, #1 | ||
1573 | bne .Lctr_enc_short_loop | ||
1574 | |||
1575 | vmov.i32 q0, #0 | ||
1576 | vmov.i32 q1, #0 | ||
1577 | vstmia sp!, {q0-q1} | ||
1578 | |||
1579 | ldmia sp!, {r4-r8, pc} | ||
1580 | .size bsaes_ctr32_encrypt_blocks,.-bsaes_ctr32_encrypt_blocks | ||
1581 | ___ | ||
1582 | } | ||
1583 | { | ||
1584 | ###################################################################### | ||
1585 | # void bsaes_xts_[en|de]crypt(const char *inp,char *out,size_t len, | ||
1586 | # const AES_KEY *key1, const AES_KEY *key2, | ||
1587 | # const unsigned char iv[16]); | ||
1588 | # | ||
1589 | my ($inp,$out,$len,$key,$rounds,$magic,$fp)=(map("r$_",(7..10,1..3))); | ||
1590 | my $const="r6"; # returned by _bsaes_key_convert | ||
1591 | my $twmask=@XMM[5]; | ||
1592 | my @T=@XMM[6..7]; | ||
1593 | |||
1594 | $code.=<<___; | ||
1595 | .globl bsaes_xts_encrypt | ||
1596 | .type bsaes_xts_encrypt,%function | ||
1597 | .align 4 | ||
1598 | bsaes_xts_encrypt: | ||
1599 | mov ip, sp | ||
1600 | stmdb sp!, {r4-r10, lr} @ 0x20 | ||
1601 | VFP_ABI_PUSH | ||
1602 | mov r6, sp @ future $fp | ||
1603 | |||
1604 | mov $inp, r0 | ||
1605 | mov $out, r1 | ||
1606 | mov $len, r2 | ||
1607 | mov $key, r3 | ||
1608 | |||
1609 | sub r0, sp, #0x10 @ 0x10 | ||
1610 | bic r0, #0xf @ align at 16 bytes | ||
1611 | mov sp, r0 | ||
1612 | |||
1613 | #ifdef XTS_CHAIN_TWEAK | ||
1614 | ldr r0, [ip] @ pointer to input tweak | ||
1615 | #else | ||
1616 | @ generate initial tweak | ||
1617 | ldr r0, [ip, #4] @ iv[] | ||
1618 | mov r1, sp | ||
1619 | ldr r2, [ip, #0] @ key2 | ||
1620 | bl AES_encrypt | ||
1621 | mov r0,sp @ pointer to initial tweak | ||
1622 | #endif | ||
1623 | |||
1624 | ldr $rounds, [$key, #240] @ get # of rounds | ||
1625 | mov $fp, r6 | ||
1626 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1627 | @ allocate the key schedule on the stack | ||
1628 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | ||
1629 | @ add r12, #`128-32` @ size of bit-sliced key schedule | ||
1630 | sub r12, #`32+16` @ place for tweak[9] | ||
1631 | |||
1632 | @ populate the key schedule | ||
1633 | mov r4, $key @ pass key | ||
1634 | mov r5, $rounds @ pass # of rounds | ||
1635 | mov sp, r12 | ||
1636 | add r12, #0x90 @ pass key schedule | ||
1637 | bl _bsaes_key_convert | ||
1638 | veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | ||
1639 | vstmia r12, {@XMM[7]} @ save last round key | ||
1640 | #else | ||
1641 | ldr r12, [$key, #244] | ||
1642 | eors r12, #1 | ||
1643 | beq 0f | ||
1644 | |||
1645 | str r12, [$key, #244] | ||
1646 | mov r4, $key @ pass key | ||
1647 | mov r5, $rounds @ pass # of rounds | ||
1648 | add r12, $key, #248 @ pass key schedule | ||
1649 | bl _bsaes_key_convert | ||
1650 | veor @XMM[7], @XMM[7], @XMM[15] @ fix up last round key | ||
1651 | vstmia r12, {@XMM[7]} | ||
1652 | |||
1653 | .align 2 | ||
1654 | 0: sub sp, #0x90 @ place for tweak[9] | ||
1655 | #endif | ||
1656 | |||
1657 | vld1.8 {@XMM[8]}, [r0] @ initial tweak | ||
1658 | adr $magic, .Lxts_magic | ||
1659 | |||
1660 | subs $len, #0x80 | ||
1661 | blo .Lxts_enc_short | ||
1662 | b .Lxts_enc_loop | ||
1663 | |||
1664 | .align 4 | ||
1665 | .Lxts_enc_loop: | ||
1666 | vldmia $magic, {$twmask} @ load XTS magic | ||
1667 | vshr.s64 @T[0], @XMM[8], #63 | ||
1668 | mov r0, sp | ||
1669 | vand @T[0], @T[0], $twmask | ||
1670 | ___ | ||
1671 | for($i=9;$i<16;$i++) { | ||
1672 | $code.=<<___; | ||
1673 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | ||
1674 | vst1.64 {@XMM[$i-1]}, [r0,:128]! | ||
1675 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
1676 | vshr.s64 @T[1], @XMM[$i], #63 | ||
1677 | veor @XMM[$i], @XMM[$i], @T[0] | ||
1678 | vand @T[1], @T[1], $twmask | ||
1679 | ___ | ||
1680 | @T=reverse(@T); | ||
1681 | |||
1682 | $code.=<<___ if ($i>=10); | ||
1683 | vld1.8 {@XMM[$i-10]}, [$inp]! | ||
1684 | ___ | ||
1685 | $code.=<<___ if ($i>=11); | ||
1686 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | ||
1687 | ___ | ||
1688 | } | ||
1689 | $code.=<<___; | ||
1690 | vadd.u64 @XMM[8], @XMM[15], @XMM[15] | ||
1691 | vst1.64 {@XMM[15]}, [r0,:128]! | ||
1692 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
1693 | veor @XMM[8], @XMM[8], @T[0] | ||
1694 | vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1695 | |||
1696 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | ||
1697 | veor @XMM[5], @XMM[5], @XMM[13] | ||
1698 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1699 | add r4, sp, #0x90 @ pass key schedule | ||
1700 | #else | ||
1701 | add r4, $key, #248 @ pass key schedule | ||
1702 | #endif | ||
1703 | veor @XMM[6], @XMM[6], @XMM[14] | ||
1704 | mov r5, $rounds @ pass rounds | ||
1705 | veor @XMM[7], @XMM[7], @XMM[15] | ||
1706 | mov r0, sp | ||
1707 | |||
1708 | bl _bsaes_encrypt8 | ||
1709 | |||
1710 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
1711 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
1712 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1713 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
1714 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1715 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1716 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1717 | veor @XMM[9], @XMM[6], @XMM[11] | ||
1718 | vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! | ||
1719 | veor @XMM[10], @XMM[3], @XMM[12] | ||
1720 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
1721 | veor @XMM[11], @XMM[7], @XMM[13] | ||
1722 | veor @XMM[12], @XMM[2], @XMM[14] | ||
1723 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
1724 | veor @XMM[13], @XMM[5], @XMM[15] | ||
1725 | vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | ||
1726 | |||
1727 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1728 | |||
1729 | subs $len, #0x80 | ||
1730 | bpl .Lxts_enc_loop | ||
1731 | |||
1732 | .Lxts_enc_short: | ||
1733 | adds $len, #0x70 | ||
1734 | bmi .Lxts_enc_done | ||
1735 | |||
1736 | vldmia $magic, {$twmask} @ load XTS magic | ||
1737 | vshr.s64 @T[0], @XMM[8], #63 | ||
1738 | mov r0, sp | ||
1739 | vand @T[0], @T[0], $twmask | ||
1740 | ___ | ||
1741 | for($i=9;$i<16;$i++) { | ||
1742 | $code.=<<___; | ||
1743 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | ||
1744 | vst1.64 {@XMM[$i-1]}, [r0,:128]! | ||
1745 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
1746 | vshr.s64 @T[1], @XMM[$i], #63 | ||
1747 | veor @XMM[$i], @XMM[$i], @T[0] | ||
1748 | vand @T[1], @T[1], $twmask | ||
1749 | ___ | ||
1750 | @T=reverse(@T); | ||
1751 | |||
1752 | $code.=<<___ if ($i>=10); | ||
1753 | vld1.8 {@XMM[$i-10]}, [$inp]! | ||
1754 | subs $len, #0x10 | ||
1755 | bmi .Lxts_enc_`$i-9` | ||
1756 | ___ | ||
1757 | $code.=<<___ if ($i>=11); | ||
1758 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | ||
1759 | ___ | ||
1760 | } | ||
1761 | $code.=<<___; | ||
1762 | sub $len, #0x10 | ||
1763 | vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak | ||
1764 | |||
1765 | vld1.8 {@XMM[6]}, [$inp]! | ||
1766 | veor @XMM[5], @XMM[5], @XMM[13] | ||
1767 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1768 | add r4, sp, #0x90 @ pass key schedule | ||
1769 | #else | ||
1770 | add r4, $key, #248 @ pass key schedule | ||
1771 | #endif | ||
1772 | veor @XMM[6], @XMM[6], @XMM[14] | ||
1773 | mov r5, $rounds @ pass rounds | ||
1774 | mov r0, sp | ||
1775 | |||
1776 | bl _bsaes_encrypt8 | ||
1777 | |||
1778 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
1779 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
1780 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1781 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
1782 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1783 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1784 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1785 | veor @XMM[9], @XMM[6], @XMM[11] | ||
1786 | vld1.64 {@XMM[14]}, [r0,:128]! | ||
1787 | veor @XMM[10], @XMM[3], @XMM[12] | ||
1788 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
1789 | veor @XMM[11], @XMM[7], @XMM[13] | ||
1790 | veor @XMM[12], @XMM[2], @XMM[14] | ||
1791 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
1792 | vst1.8 {@XMM[12]}, [$out]! | ||
1793 | |||
1794 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1795 | b .Lxts_enc_done | ||
1796 | .align 4 | ||
1797 | .Lxts_enc_6: | ||
1798 | vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak | ||
1799 | |||
1800 | veor @XMM[4], @XMM[4], @XMM[12] | ||
1801 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1802 | add r4, sp, #0x90 @ pass key schedule | ||
1803 | #else | ||
1804 | add r4, $key, #248 @ pass key schedule | ||
1805 | #endif | ||
1806 | veor @XMM[5], @XMM[5], @XMM[13] | ||
1807 | mov r5, $rounds @ pass rounds | ||
1808 | mov r0, sp | ||
1809 | |||
1810 | bl _bsaes_encrypt8 | ||
1811 | |||
1812 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
1813 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
1814 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1815 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
1816 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1817 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1818 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1819 | veor @XMM[9], @XMM[6], @XMM[11] | ||
1820 | veor @XMM[10], @XMM[3], @XMM[12] | ||
1821 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
1822 | veor @XMM[11], @XMM[7], @XMM[13] | ||
1823 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
1824 | |||
1825 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1826 | b .Lxts_enc_done | ||
1827 | |||
1828 | @ put this in range for both ARM and Thumb mode adr instructions | ||
1829 | .align 5 | ||
1830 | .Lxts_magic: | ||
1831 | .quad 1, 0x87 | ||
1832 | |||
1833 | .align 5 | ||
1834 | .Lxts_enc_5: | ||
1835 | vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak | ||
1836 | |||
1837 | veor @XMM[3], @XMM[3], @XMM[11] | ||
1838 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1839 | add r4, sp, #0x90 @ pass key schedule | ||
1840 | #else | ||
1841 | add r4, $key, #248 @ pass key schedule | ||
1842 | #endif | ||
1843 | veor @XMM[4], @XMM[4], @XMM[12] | ||
1844 | mov r5, $rounds @ pass rounds | ||
1845 | mov r0, sp | ||
1846 | |||
1847 | bl _bsaes_encrypt8 | ||
1848 | |||
1849 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
1850 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
1851 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1852 | vld1.64 {@XMM[12]}, [r0,:128]! | ||
1853 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1854 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1855 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1856 | veor @XMM[9], @XMM[6], @XMM[11] | ||
1857 | veor @XMM[10], @XMM[3], @XMM[12] | ||
1858 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
1859 | vst1.8 {@XMM[10]}, [$out]! | ||
1860 | |||
1861 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1862 | b .Lxts_enc_done | ||
1863 | .align 4 | ||
1864 | .Lxts_enc_4: | ||
1865 | vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak | ||
1866 | |||
1867 | veor @XMM[2], @XMM[2], @XMM[10] | ||
1868 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1869 | add r4, sp, #0x90 @ pass key schedule | ||
1870 | #else | ||
1871 | add r4, $key, #248 @ pass key schedule | ||
1872 | #endif | ||
1873 | veor @XMM[3], @XMM[3], @XMM[11] | ||
1874 | mov r5, $rounds @ pass rounds | ||
1875 | mov r0, sp | ||
1876 | |||
1877 | bl _bsaes_encrypt8 | ||
1878 | |||
1879 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
1880 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
1881 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1882 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1883 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1884 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1885 | veor @XMM[9], @XMM[6], @XMM[11] | ||
1886 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
1887 | |||
1888 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1889 | b .Lxts_enc_done | ||
1890 | .align 4 | ||
1891 | .Lxts_enc_3: | ||
1892 | vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak | ||
1893 | |||
1894 | veor @XMM[1], @XMM[1], @XMM[9] | ||
1895 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1896 | add r4, sp, #0x90 @ pass key schedule | ||
1897 | #else | ||
1898 | add r4, $key, #248 @ pass key schedule | ||
1899 | #endif | ||
1900 | veor @XMM[2], @XMM[2], @XMM[10] | ||
1901 | mov r5, $rounds @ pass rounds | ||
1902 | mov r0, sp | ||
1903 | |||
1904 | bl _bsaes_encrypt8 | ||
1905 | |||
1906 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | ||
1907 | vld1.64 {@XMM[10]}, [r0,:128]! | ||
1908 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1909 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1910 | veor @XMM[8], @XMM[4], @XMM[10] | ||
1911 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1912 | vst1.8 {@XMM[8]}, [$out]! | ||
1913 | |||
1914 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1915 | b .Lxts_enc_done | ||
1916 | .align 4 | ||
1917 | .Lxts_enc_2: | ||
1918 | vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak | ||
1919 | |||
1920 | veor @XMM[0], @XMM[0], @XMM[8] | ||
1921 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
1922 | add r4, sp, #0x90 @ pass key schedule | ||
1923 | #else | ||
1924 | add r4, $key, #248 @ pass key schedule | ||
1925 | #endif | ||
1926 | veor @XMM[1], @XMM[1], @XMM[9] | ||
1927 | mov r5, $rounds @ pass rounds | ||
1928 | mov r0, sp | ||
1929 | |||
1930 | bl _bsaes_encrypt8 | ||
1931 | |||
1932 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | ||
1933 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
1934 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
1935 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
1936 | |||
1937 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
1938 | b .Lxts_enc_done | ||
1939 | .align 4 | ||
1940 | .Lxts_enc_1: | ||
1941 | mov r0, sp | ||
1942 | veor @XMM[0], @XMM[8] | ||
1943 | mov r1, sp | ||
1944 | vst1.8 {@XMM[0]}, [sp,:128] | ||
1945 | mov r2, $key | ||
1946 | mov r4, $fp @ preserve fp | ||
1947 | |||
1948 | bl AES_encrypt | ||
1949 | |||
1950 | vld1.8 {@XMM[0]}, [sp,:128] | ||
1951 | veor @XMM[0], @XMM[0], @XMM[8] | ||
1952 | vst1.8 {@XMM[0]}, [$out]! | ||
1953 | mov $fp, r4 | ||
1954 | |||
1955 | vmov @XMM[8], @XMM[9] @ next round tweak | ||
1956 | |||
1957 | .Lxts_enc_done: | ||
1958 | #ifndef XTS_CHAIN_TWEAK | ||
1959 | adds $len, #0x10 | ||
1960 | beq .Lxts_enc_ret | ||
1961 | sub r6, $out, #0x10 | ||
1962 | |||
1963 | .Lxts_enc_steal: | ||
1964 | ldrb r0, [$inp], #1 | ||
1965 | ldrb r1, [$out, #-0x10] | ||
1966 | strb r0, [$out, #-0x10] | ||
1967 | strb r1, [$out], #1 | ||
1968 | |||
1969 | subs $len, #1 | ||
1970 | bhi .Lxts_enc_steal | ||
1971 | |||
1972 | vld1.8 {@XMM[0]}, [r6] | ||
1973 | mov r0, sp | ||
1974 | veor @XMM[0], @XMM[0], @XMM[8] | ||
1975 | mov r1, sp | ||
1976 | vst1.8 {@XMM[0]}, [sp,:128] | ||
1977 | mov r2, $key | ||
1978 | mov r4, $fp @ preserve fp | ||
1979 | |||
1980 | bl AES_encrypt | ||
1981 | |||
1982 | vld1.8 {@XMM[0]}, [sp,:128] | ||
1983 | veor @XMM[0], @XMM[0], @XMM[8] | ||
1984 | vst1.8 {@XMM[0]}, [r6] | ||
1985 | mov $fp, r4 | ||
1986 | #endif | ||
1987 | |||
1988 | .Lxts_enc_ret: | ||
1989 | bic r0, $fp, #0xf | ||
1990 | vmov.i32 q0, #0 | ||
1991 | vmov.i32 q1, #0 | ||
1992 | #ifdef XTS_CHAIN_TWEAK | ||
1993 | ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | ||
1994 | #endif | ||
1995 | .Lxts_enc_bzero: @ wipe key schedule [if any] | ||
1996 | vstmia sp!, {q0-q1} | ||
1997 | cmp sp, r0 | ||
1998 | bne .Lxts_enc_bzero | ||
1999 | |||
2000 | mov sp, $fp | ||
2001 | #ifdef XTS_CHAIN_TWEAK | ||
2002 | vst1.8 {@XMM[8]}, [r1] | ||
2003 | #endif | ||
2004 | VFP_ABI_POP | ||
2005 | ldmia sp!, {r4-r10, pc} @ return | ||
2006 | |||
2007 | .size bsaes_xts_encrypt,.-bsaes_xts_encrypt | ||
2008 | |||
2009 | .globl bsaes_xts_decrypt | ||
2010 | .type bsaes_xts_decrypt,%function | ||
2011 | .align 4 | ||
2012 | bsaes_xts_decrypt: | ||
2013 | mov ip, sp | ||
2014 | stmdb sp!, {r4-r10, lr} @ 0x20 | ||
2015 | VFP_ABI_PUSH | ||
2016 | mov r6, sp @ future $fp | ||
2017 | |||
2018 | mov $inp, r0 | ||
2019 | mov $out, r1 | ||
2020 | mov $len, r2 | ||
2021 | mov $key, r3 | ||
2022 | |||
2023 | sub r0, sp, #0x10 @ 0x10 | ||
2024 | bic r0, #0xf @ align at 16 bytes | ||
2025 | mov sp, r0 | ||
2026 | |||
2027 | #ifdef XTS_CHAIN_TWEAK | ||
2028 | ldr r0, [ip] @ pointer to input tweak | ||
2029 | #else | ||
2030 | @ generate initial tweak | ||
2031 | ldr r0, [ip, #4] @ iv[] | ||
2032 | mov r1, sp | ||
2033 | ldr r2, [ip, #0] @ key2 | ||
2034 | bl AES_encrypt | ||
2035 | mov r0, sp @ pointer to initial tweak | ||
2036 | #endif | ||
2037 | |||
2038 | ldr $rounds, [$key, #240] @ get # of rounds | ||
2039 | mov $fp, r6 | ||
2040 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2041 | @ allocate the key schedule on the stack | ||
2042 | sub r12, sp, $rounds, lsl#7 @ 128 bytes per inner round key | ||
2043 | @ add r12, #`128-32` @ size of bit-sliced key schedule | ||
2044 | sub r12, #`32+16` @ place for tweak[9] | ||
2045 | |||
2046 | @ populate the key schedule | ||
2047 | mov r4, $key @ pass key | ||
2048 | mov r5, $rounds @ pass # of rounds | ||
2049 | mov sp, r12 | ||
2050 | add r12, #0x90 @ pass key schedule | ||
2051 | bl _bsaes_key_convert | ||
2052 | add r4, sp, #0x90 | ||
2053 | vldmia r4, {@XMM[6]} | ||
2054 | vstmia r12, {@XMM[15]} @ save last round key | ||
2055 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | ||
2056 | vstmia r4, {@XMM[7]} | ||
2057 | #else | ||
2058 | ldr r12, [$key, #244] | ||
2059 | eors r12, #1 | ||
2060 | beq 0f | ||
2061 | |||
2062 | str r12, [$key, #244] | ||
2063 | mov r4, $key @ pass key | ||
2064 | mov r5, $rounds @ pass # of rounds | ||
2065 | add r12, $key, #248 @ pass key schedule | ||
2066 | bl _bsaes_key_convert | ||
2067 | add r4, $key, #248 | ||
2068 | vldmia r4, {@XMM[6]} | ||
2069 | vstmia r12, {@XMM[15]} @ save last round key | ||
2070 | veor @XMM[7], @XMM[7], @XMM[6] @ fix up round 0 key | ||
2071 | vstmia r4, {@XMM[7]} | ||
2072 | |||
2073 | .align 2 | ||
2074 | 0: sub sp, #0x90 @ place for tweak[9] | ||
2075 | #endif | ||
2076 | vld1.8 {@XMM[8]}, [r0] @ initial tweak | ||
2077 | adr $magic, .Lxts_magic | ||
2078 | |||
2079 | tst $len, #0xf @ if not multiple of 16 | ||
2080 | it ne @ Thumb2 thing, sanity check in ARM | ||
2081 | subne $len, #0x10 @ subtract another 16 bytes | ||
2082 | subs $len, #0x80 | ||
2083 | |||
2084 | blo .Lxts_dec_short | ||
2085 | b .Lxts_dec_loop | ||
2086 | |||
2087 | .align 4 | ||
2088 | .Lxts_dec_loop: | ||
2089 | vldmia $magic, {$twmask} @ load XTS magic | ||
2090 | vshr.s64 @T[0], @XMM[8], #63 | ||
2091 | mov r0, sp | ||
2092 | vand @T[0], @T[0], $twmask | ||
2093 | ___ | ||
2094 | for($i=9;$i<16;$i++) { | ||
2095 | $code.=<<___; | ||
2096 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | ||
2097 | vst1.64 {@XMM[$i-1]}, [r0,:128]! | ||
2098 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
2099 | vshr.s64 @T[1], @XMM[$i], #63 | ||
2100 | veor @XMM[$i], @XMM[$i], @T[0] | ||
2101 | vand @T[1], @T[1], $twmask | ||
2102 | ___ | ||
2103 | @T=reverse(@T); | ||
2104 | |||
2105 | $code.=<<___ if ($i>=10); | ||
2106 | vld1.8 {@XMM[$i-10]}, [$inp]! | ||
2107 | ___ | ||
2108 | $code.=<<___ if ($i>=11); | ||
2109 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | ||
2110 | ___ | ||
2111 | } | ||
2112 | $code.=<<___; | ||
2113 | vadd.u64 @XMM[8], @XMM[15], @XMM[15] | ||
2114 | vst1.64 {@XMM[15]}, [r0,:128]! | ||
2115 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
2116 | veor @XMM[8], @XMM[8], @T[0] | ||
2117 | vst1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2118 | |||
2119 | vld1.8 {@XMM[6]-@XMM[7]}, [$inp]! | ||
2120 | veor @XMM[5], @XMM[5], @XMM[13] | ||
2121 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2122 | add r4, sp, #0x90 @ pass key schedule | ||
2123 | #else | ||
2124 | add r4, $key, #248 @ pass key schedule | ||
2125 | #endif | ||
2126 | veor @XMM[6], @XMM[6], @XMM[14] | ||
2127 | mov r5, $rounds @ pass rounds | ||
2128 | veor @XMM[7], @XMM[7], @XMM[15] | ||
2129 | mov r0, sp | ||
2130 | |||
2131 | bl _bsaes_decrypt8 | ||
2132 | |||
2133 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
2134 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
2135 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2136 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
2137 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2138 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2139 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2140 | veor @XMM[9], @XMM[4], @XMM[11] | ||
2141 | vld1.64 {@XMM[14]-@XMM[15]}, [r0,:128]! | ||
2142 | veor @XMM[10], @XMM[2], @XMM[12] | ||
2143 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
2144 | veor @XMM[11], @XMM[7], @XMM[13] | ||
2145 | veor @XMM[12], @XMM[3], @XMM[14] | ||
2146 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
2147 | veor @XMM[13], @XMM[5], @XMM[15] | ||
2148 | vst1.8 {@XMM[12]-@XMM[13]}, [$out]! | ||
2149 | |||
2150 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2151 | |||
2152 | subs $len, #0x80 | ||
2153 | bpl .Lxts_dec_loop | ||
2154 | |||
2155 | .Lxts_dec_short: | ||
2156 | adds $len, #0x70 | ||
2157 | bmi .Lxts_dec_done | ||
2158 | |||
2159 | vldmia $magic, {$twmask} @ load XTS magic | ||
2160 | vshr.s64 @T[0], @XMM[8], #63 | ||
2161 | mov r0, sp | ||
2162 | vand @T[0], @T[0], $twmask | ||
2163 | ___ | ||
2164 | for($i=9;$i<16;$i++) { | ||
2165 | $code.=<<___; | ||
2166 | vadd.u64 @XMM[$i], @XMM[$i-1], @XMM[$i-1] | ||
2167 | vst1.64 {@XMM[$i-1]}, [r0,:128]! | ||
2168 | vswp `&Dhi("@T[0]")`,`&Dlo("@T[0]")` | ||
2169 | vshr.s64 @T[1], @XMM[$i], #63 | ||
2170 | veor @XMM[$i], @XMM[$i], @T[0] | ||
2171 | vand @T[1], @T[1], $twmask | ||
2172 | ___ | ||
2173 | @T=reverse(@T); | ||
2174 | |||
2175 | $code.=<<___ if ($i>=10); | ||
2176 | vld1.8 {@XMM[$i-10]}, [$inp]! | ||
2177 | subs $len, #0x10 | ||
2178 | bmi .Lxts_dec_`$i-9` | ||
2179 | ___ | ||
2180 | $code.=<<___ if ($i>=11); | ||
2181 | veor @XMM[$i-11], @XMM[$i-11], @XMM[$i-3] | ||
2182 | ___ | ||
2183 | } | ||
2184 | $code.=<<___; | ||
2185 | sub $len, #0x10 | ||
2186 | vst1.64 {@XMM[15]}, [r0,:128] @ next round tweak | ||
2187 | |||
2188 | vld1.8 {@XMM[6]}, [$inp]! | ||
2189 | veor @XMM[5], @XMM[5], @XMM[13] | ||
2190 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2191 | add r4, sp, #0x90 @ pass key schedule | ||
2192 | #else | ||
2193 | add r4, $key, #248 @ pass key schedule | ||
2194 | #endif | ||
2195 | veor @XMM[6], @XMM[6], @XMM[14] | ||
2196 | mov r5, $rounds @ pass rounds | ||
2197 | mov r0, sp | ||
2198 | |||
2199 | bl _bsaes_decrypt8 | ||
2200 | |||
2201 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
2202 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
2203 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2204 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
2205 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2206 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2207 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2208 | veor @XMM[9], @XMM[4], @XMM[11] | ||
2209 | vld1.64 {@XMM[14]}, [r0,:128]! | ||
2210 | veor @XMM[10], @XMM[2], @XMM[12] | ||
2211 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
2212 | veor @XMM[11], @XMM[7], @XMM[13] | ||
2213 | veor @XMM[12], @XMM[3], @XMM[14] | ||
2214 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
2215 | vst1.8 {@XMM[12]}, [$out]! | ||
2216 | |||
2217 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2218 | b .Lxts_dec_done | ||
2219 | .align 4 | ||
2220 | .Lxts_dec_6: | ||
2221 | vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak | ||
2222 | |||
2223 | veor @XMM[4], @XMM[4], @XMM[12] | ||
2224 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2225 | add r4, sp, #0x90 @ pass key schedule | ||
2226 | #else | ||
2227 | add r4, $key, #248 @ pass key schedule | ||
2228 | #endif | ||
2229 | veor @XMM[5], @XMM[5], @XMM[13] | ||
2230 | mov r5, $rounds @ pass rounds | ||
2231 | mov r0, sp | ||
2232 | |||
2233 | bl _bsaes_decrypt8 | ||
2234 | |||
2235 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
2236 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
2237 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2238 | vld1.64 {@XMM[12]-@XMM[13]}, [r0,:128]! | ||
2239 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2240 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2241 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2242 | veor @XMM[9], @XMM[4], @XMM[11] | ||
2243 | veor @XMM[10], @XMM[2], @XMM[12] | ||
2244 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
2245 | veor @XMM[11], @XMM[7], @XMM[13] | ||
2246 | vst1.8 {@XMM[10]-@XMM[11]}, [$out]! | ||
2247 | |||
2248 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2249 | b .Lxts_dec_done | ||
2250 | .align 4 | ||
2251 | .Lxts_dec_5: | ||
2252 | vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak | ||
2253 | |||
2254 | veor @XMM[3], @XMM[3], @XMM[11] | ||
2255 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2256 | add r4, sp, #0x90 @ pass key schedule | ||
2257 | #else | ||
2258 | add r4, $key, #248 @ pass key schedule | ||
2259 | #endif | ||
2260 | veor @XMM[4], @XMM[4], @XMM[12] | ||
2261 | mov r5, $rounds @ pass rounds | ||
2262 | mov r0, sp | ||
2263 | |||
2264 | bl _bsaes_decrypt8 | ||
2265 | |||
2266 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
2267 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
2268 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2269 | vld1.64 {@XMM[12]}, [r0,:128]! | ||
2270 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2271 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2272 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2273 | veor @XMM[9], @XMM[4], @XMM[11] | ||
2274 | veor @XMM[10], @XMM[2], @XMM[12] | ||
2275 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
2276 | vst1.8 {@XMM[10]}, [$out]! | ||
2277 | |||
2278 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2279 | b .Lxts_dec_done | ||
2280 | .align 4 | ||
2281 | .Lxts_dec_4: | ||
2282 | vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak | ||
2283 | |||
2284 | veor @XMM[2], @XMM[2], @XMM[10] | ||
2285 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2286 | add r4, sp, #0x90 @ pass key schedule | ||
2287 | #else | ||
2288 | add r4, $key, #248 @ pass key schedule | ||
2289 | #endif | ||
2290 | veor @XMM[3], @XMM[3], @XMM[11] | ||
2291 | mov r5, $rounds @ pass rounds | ||
2292 | mov r0, sp | ||
2293 | |||
2294 | bl _bsaes_decrypt8 | ||
2295 | |||
2296 | vld1.64 {@XMM[ 8]-@XMM[ 9]}, [r0,:128]! | ||
2297 | vld1.64 {@XMM[10]-@XMM[11]}, [r0,:128]! | ||
2298 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2299 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2300 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2301 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2302 | veor @XMM[9], @XMM[4], @XMM[11] | ||
2303 | vst1.8 {@XMM[8]-@XMM[9]}, [$out]! | ||
2304 | |||
2305 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2306 | b .Lxts_dec_done | ||
2307 | .align 4 | ||
2308 | .Lxts_dec_3: | ||
2309 | vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak | ||
2310 | |||
2311 | veor @XMM[1], @XMM[1], @XMM[9] | ||
2312 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2313 | add r4, sp, #0x90 @ pass key schedule | ||
2314 | #else | ||
2315 | add r4, $key, #248 @ pass key schedule | ||
2316 | #endif | ||
2317 | veor @XMM[2], @XMM[2], @XMM[10] | ||
2318 | mov r5, $rounds @ pass rounds | ||
2319 | mov r0, sp | ||
2320 | |||
2321 | bl _bsaes_decrypt8 | ||
2322 | |||
2323 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | ||
2324 | vld1.64 {@XMM[10]}, [r0,:128]! | ||
2325 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2326 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2327 | veor @XMM[8], @XMM[6], @XMM[10] | ||
2328 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2329 | vst1.8 {@XMM[8]}, [$out]! | ||
2330 | |||
2331 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2332 | b .Lxts_dec_done | ||
2333 | .align 4 | ||
2334 | .Lxts_dec_2: | ||
2335 | vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak | ||
2336 | |||
2337 | veor @XMM[0], @XMM[0], @XMM[8] | ||
2338 | #ifndef BSAES_ASM_EXTENDED_KEY | ||
2339 | add r4, sp, #0x90 @ pass key schedule | ||
2340 | #else | ||
2341 | add r4, $key, #248 @ pass key schedule | ||
2342 | #endif | ||
2343 | veor @XMM[1], @XMM[1], @XMM[9] | ||
2344 | mov r5, $rounds @ pass rounds | ||
2345 | mov r0, sp | ||
2346 | |||
2347 | bl _bsaes_decrypt8 | ||
2348 | |||
2349 | vld1.64 {@XMM[8]-@XMM[9]}, [r0,:128]! | ||
2350 | veor @XMM[0], @XMM[0], @XMM[ 8] | ||
2351 | veor @XMM[1], @XMM[1], @XMM[ 9] | ||
2352 | vst1.8 {@XMM[0]-@XMM[1]}, [$out]! | ||
2353 | |||
2354 | vld1.64 {@XMM[8]}, [r0,:128] @ next round tweak | ||
2355 | b .Lxts_dec_done | ||
2356 | .align 4 | ||
2357 | .Lxts_dec_1: | ||
2358 | mov r0, sp | ||
2359 | veor @XMM[0], @XMM[8] | ||
2360 | mov r1, sp | ||
2361 | vst1.8 {@XMM[0]}, [sp,:128] | ||
2362 | mov r2, $key | ||
2363 | mov r4, $fp @ preserve fp | ||
2364 | mov r5, $magic @ preserve magic | ||
2365 | |||
2366 | bl AES_decrypt | ||
2367 | |||
2368 | vld1.8 {@XMM[0]}, [sp,:128] | ||
2369 | veor @XMM[0], @XMM[0], @XMM[8] | ||
2370 | vst1.8 {@XMM[0]}, [$out]! | ||
2371 | mov $fp, r4 | ||
2372 | mov $magic, r5 | ||
2373 | |||
2374 | vmov @XMM[8], @XMM[9] @ next round tweak | ||
2375 | |||
2376 | .Lxts_dec_done: | ||
2377 | #ifndef XTS_CHAIN_TWEAK | ||
2378 | adds $len, #0x10 | ||
2379 | beq .Lxts_dec_ret | ||
2380 | |||
2381 | @ calculate one round of extra tweak for the stolen ciphertext | ||
2382 | vldmia $magic, {$twmask} | ||
2383 | vshr.s64 @XMM[6], @XMM[8], #63 | ||
2384 | vand @XMM[6], @XMM[6], $twmask | ||
2385 | vadd.u64 @XMM[9], @XMM[8], @XMM[8] | ||
2386 | vswp `&Dhi("@XMM[6]")`,`&Dlo("@XMM[6]")` | ||
2387 | veor @XMM[9], @XMM[9], @XMM[6] | ||
2388 | |||
2389 | @ perform the final decryption with the last tweak value | ||
2390 | vld1.8 {@XMM[0]}, [$inp]! | ||
2391 | mov r0, sp | ||
2392 | veor @XMM[0], @XMM[0], @XMM[9] | ||
2393 | mov r1, sp | ||
2394 | vst1.8 {@XMM[0]}, [sp,:128] | ||
2395 | mov r2, $key | ||
2396 | mov r4, $fp @ preserve fp | ||
2397 | |||
2398 | bl AES_decrypt | ||
2399 | |||
2400 | vld1.8 {@XMM[0]}, [sp,:128] | ||
2401 | veor @XMM[0], @XMM[0], @XMM[9] | ||
2402 | vst1.8 {@XMM[0]}, [$out] | ||
2403 | |||
2404 | mov r6, $out | ||
2405 | .Lxts_dec_steal: | ||
2406 | ldrb r1, [$out] | ||
2407 | ldrb r0, [$inp], #1 | ||
2408 | strb r1, [$out, #0x10] | ||
2409 | strb r0, [$out], #1 | ||
2410 | |||
2411 | subs $len, #1 | ||
2412 | bhi .Lxts_dec_steal | ||
2413 | |||
2414 | vld1.8 {@XMM[0]}, [r6] | ||
2415 | mov r0, sp | ||
2416 | veor @XMM[0], @XMM[8] | ||
2417 | mov r1, sp | ||
2418 | vst1.8 {@XMM[0]}, [sp,:128] | ||
2419 | mov r2, $key | ||
2420 | |||
2421 | bl AES_decrypt | ||
2422 | |||
2423 | vld1.8 {@XMM[0]}, [sp,:128] | ||
2424 | veor @XMM[0], @XMM[0], @XMM[8] | ||
2425 | vst1.8 {@XMM[0]}, [r6] | ||
2426 | mov $fp, r4 | ||
2427 | #endif | ||
2428 | |||
2429 | .Lxts_dec_ret: | ||
2430 | bic r0, $fp, #0xf | ||
2431 | vmov.i32 q0, #0 | ||
2432 | vmov.i32 q1, #0 | ||
2433 | #ifdef XTS_CHAIN_TWEAK | ||
2434 | ldr r1, [$fp, #0x20+VFP_ABI_FRAME] @ chain tweak | ||
2435 | #endif | ||
2436 | .Lxts_dec_bzero: @ wipe key schedule [if any] | ||
2437 | vstmia sp!, {q0-q1} | ||
2438 | cmp sp, r0 | ||
2439 | bne .Lxts_dec_bzero | ||
2440 | |||
2441 | mov sp, $fp | ||
2442 | #ifdef XTS_CHAIN_TWEAK | ||
2443 | vst1.8 {@XMM[8]}, [r1] | ||
2444 | #endif | ||
2445 | VFP_ABI_POP | ||
2446 | ldmia sp!, {r4-r10, pc} @ return | ||
2447 | |||
2448 | .size bsaes_xts_decrypt,.-bsaes_xts_decrypt | ||
2449 | ___ | ||
2450 | } | ||
2451 | $code.=<<___; | ||
2452 | #endif | ||
2453 | ___ | ||
2454 | |||
2455 | $code =~ s/\`([^\`]*)\`/eval($1)/gem; | ||
2456 | |||
2457 | open SELF,$0; | ||
2458 | while(<SELF>) { | ||
2459 | next if (/^#!/); | ||
2460 | last if (!s/^#/@/ and !/^$/); | ||
2461 | print; | ||
2462 | } | ||
2463 | close SELF; | ||
2464 | |||
2465 | print $code; | ||
2466 | |||
2467 | close STDOUT; | ||