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1#!/usr/bin/env perl
2
3# ====================================================================
4# Written by Andy Polyakov <appro@fy.chalmers.se> 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#
10# This module implements support for Intel AES-NI extension. In
11# OpenSSL context it's used with Intel engine, but can also be used as
12# drop-in replacement for crypto/aes/asm/aes-586.pl [see below for
13# details].
14#
15# Performance.
16#
17# To start with see corresponding paragraph in aesni-x86_64.pl...
18# Instead of filling table similar to one found there I've chosen to
19# summarize *comparison* results for raw ECB, CTR and CBC benchmarks.
20# The simplified table below represents 32-bit performance relative
21# to 64-bit one in every given point. Ratios vary for different
22# encryption modes, therefore interval values.
23#
24# 16-byte 64-byte 256-byte 1-KB 8-KB
25# 53-67% 67-84% 91-94% 95-98% 97-99.5%
26#
27# Lower ratios for smaller block sizes are perfectly understandable,
28# because function call overhead is higher in 32-bit mode. Largest
29# 8-KB block performance is virtually same: 32-bit code is less than
30# 1% slower for ECB, CBC and CCM, and ~3% slower otherwise.
31
32# January 2011
33#
34# See aesni-x86_64.pl for details. Unlike x86_64 version this module
35# interleaves at most 6 aes[enc|dec] instructions, because there are
36# not enough registers for 8x interleave [which should be optimal for
37# Sandy Bridge]. Actually, performance results for 6x interleave
38# factor presented in aesni-x86_64.pl (except for CTR) are for this
39# module.
40
41# April 2011
42#
43# Add aesni_xts_[en|de]crypt. Westmere spends 1.50 cycles processing
44# one byte out of 8KB with 128-bit key, Sandy Bridge - 1.09.
45
46$PREFIX="aesni"; # if $PREFIX is set to "AES", the script
47 # generates drop-in replacement for
48 # crypto/aes/asm/aes-586.pl:-)
49$inline=1; # inline _aesni_[en|de]crypt
50
51$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
52push(@INC,"${dir}","${dir}../../perlasm");
53require "x86asm.pl";
54
55&asm_init($ARGV[0],$0);
56
57if ($PREFIX eq "aesni") { $movekey=*movups; }
58else { $movekey=*movups; }
59
60$len="eax";
61$rounds="ecx";
62$key="edx";
63$inp="esi";
64$out="edi";
65$rounds_="ebx"; # backup copy for $rounds
66$key_="ebp"; # backup copy for $key
67
68$rndkey0="xmm0";
69$rndkey1="xmm1";
70$inout0="xmm2";
71$inout1="xmm3";
72$inout2="xmm4";
73$inout3="xmm5"; $in1="xmm5";
74$inout4="xmm6"; $in0="xmm6";
75$inout5="xmm7"; $ivec="xmm7";
76
77# AESNI extenstion
78sub aeskeygenassist
79{ my($dst,$src,$imm)=@_;
80 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
81 { &data_byte(0x66,0x0f,0x3a,0xdf,0xc0|($1<<3)|$2,$imm); }
82}
83sub aescommon
84{ my($opcodelet,$dst,$src)=@_;
85 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
86 { &data_byte(0x66,0x0f,0x38,$opcodelet,0xc0|($1<<3)|$2);}
87}
88sub aesimc { aescommon(0xdb,@_); }
89sub aesenc { aescommon(0xdc,@_); }
90sub aesenclast { aescommon(0xdd,@_); }
91sub aesdec { aescommon(0xde,@_); }
92sub aesdeclast { aescommon(0xdf,@_); }
93
94# Inline version of internal aesni_[en|de]crypt1
95{ my $sn;
96sub aesni_inline_generate1
97{ my ($p,$inout,$ivec)=@_; $inout=$inout0 if (!defined($inout));
98 $sn++;
99
100 &$movekey ($rndkey0,&QWP(0,$key));
101 &$movekey ($rndkey1,&QWP(16,$key));
102 &xorps ($ivec,$rndkey0) if (defined($ivec));
103 &lea ($key,&DWP(32,$key));
104 &xorps ($inout,$ivec) if (defined($ivec));
105 &xorps ($inout,$rndkey0) if (!defined($ivec));
106 &set_label("${p}1_loop_$sn");
107 eval"&aes${p} ($inout,$rndkey1)";
108 &dec ($rounds);
109 &$movekey ($rndkey1,&QWP(0,$key));
110 &lea ($key,&DWP(16,$key));
111 &jnz (&label("${p}1_loop_$sn"));
112 eval"&aes${p}last ($inout,$rndkey1)";
113}}
114
115sub aesni_generate1 # fully unrolled loop
116{ my ($p,$inout)=@_; $inout=$inout0 if (!defined($inout));
117
118 &function_begin_B("_aesni_${p}rypt1");
119 &movups ($rndkey0,&QWP(0,$key));
120 &$movekey ($rndkey1,&QWP(0x10,$key));
121 &xorps ($inout,$rndkey0);
122 &$movekey ($rndkey0,&QWP(0x20,$key));
123 &lea ($key,&DWP(0x30,$key));
124 &cmp ($rounds,11);
125 &jb (&label("${p}128"));
126 &lea ($key,&DWP(0x20,$key));
127 &je (&label("${p}192"));
128 &lea ($key,&DWP(0x20,$key));
129 eval"&aes${p} ($inout,$rndkey1)";
130 &$movekey ($rndkey1,&QWP(-0x40,$key));
131 eval"&aes${p} ($inout,$rndkey0)";
132 &$movekey ($rndkey0,&QWP(-0x30,$key));
133 &set_label("${p}192");
134 eval"&aes${p} ($inout,$rndkey1)";
135 &$movekey ($rndkey1,&QWP(-0x20,$key));
136 eval"&aes${p} ($inout,$rndkey0)";
137 &$movekey ($rndkey0,&QWP(-0x10,$key));
138 &set_label("${p}128");
139 eval"&aes${p} ($inout,$rndkey1)";
140 &$movekey ($rndkey1,&QWP(0,$key));
141 eval"&aes${p} ($inout,$rndkey0)";
142 &$movekey ($rndkey0,&QWP(0x10,$key));
143 eval"&aes${p} ($inout,$rndkey1)";
144 &$movekey ($rndkey1,&QWP(0x20,$key));
145 eval"&aes${p} ($inout,$rndkey0)";
146 &$movekey ($rndkey0,&QWP(0x30,$key));
147 eval"&aes${p} ($inout,$rndkey1)";
148 &$movekey ($rndkey1,&QWP(0x40,$key));
149 eval"&aes${p} ($inout,$rndkey0)";
150 &$movekey ($rndkey0,&QWP(0x50,$key));
151 eval"&aes${p} ($inout,$rndkey1)";
152 &$movekey ($rndkey1,&QWP(0x60,$key));
153 eval"&aes${p} ($inout,$rndkey0)";
154 &$movekey ($rndkey0,&QWP(0x70,$key));
155 eval"&aes${p} ($inout,$rndkey1)";
156 eval"&aes${p}last ($inout,$rndkey0)";
157 &ret();
158 &function_end_B("_aesni_${p}rypt1");
159}
160
161# void $PREFIX_encrypt (const void *inp,void *out,const AES_KEY *key);
162&aesni_generate1("enc") if (!$inline);
163&function_begin_B("${PREFIX}_encrypt");
164 &mov ("eax",&wparam(0));
165 &mov ($key,&wparam(2));
166 &movups ($inout0,&QWP(0,"eax"));
167 &mov ($rounds,&DWP(240,$key));
168 &mov ("eax",&wparam(1));
169 if ($inline)
170 { &aesni_inline_generate1("enc"); }
171 else
172 { &call ("_aesni_encrypt1"); }
173 &movups (&QWP(0,"eax"),$inout0);
174 &ret ();
175&function_end_B("${PREFIX}_encrypt");
176
177# void $PREFIX_decrypt (const void *inp,void *out,const AES_KEY *key);
178&aesni_generate1("dec") if(!$inline);
179&function_begin_B("${PREFIX}_decrypt");
180 &mov ("eax",&wparam(0));
181 &mov ($key,&wparam(2));
182 &movups ($inout0,&QWP(0,"eax"));
183 &mov ($rounds,&DWP(240,$key));
184 &mov ("eax",&wparam(1));
185 if ($inline)
186 { &aesni_inline_generate1("dec"); }
187 else
188 { &call ("_aesni_decrypt1"); }
189 &movups (&QWP(0,"eax"),$inout0);
190 &ret ();
191&function_end_B("${PREFIX}_decrypt");
192
193# _aesni_[en|de]cryptN are private interfaces, N denotes interleave
194# factor. Why 3x subroutine were originally used in loops? Even though
195# aes[enc|dec] latency was originally 6, it could be scheduled only
196# every *2nd* cycle. Thus 3x interleave was the one providing optimal
197# utilization, i.e. when subroutine's throughput is virtually same as
198# of non-interleaved subroutine [for number of input blocks up to 3].
199# This is why it makes no sense to implement 2x subroutine.
200# aes[enc|dec] latency in next processor generation is 8, but the
201# instructions can be scheduled every cycle. Optimal interleave for
202# new processor is therefore 8x, but it's unfeasible to accommodate it
203# in XMM registers addreassable in 32-bit mode and therefore 6x is
204# used instead...
205
206sub aesni_generate3
207{ my $p=shift;
208
209 &function_begin_B("_aesni_${p}rypt3");
210 &$movekey ($rndkey0,&QWP(0,$key));
211 &shr ($rounds,1);
212 &$movekey ($rndkey1,&QWP(16,$key));
213 &lea ($key,&DWP(32,$key));
214 &xorps ($inout0,$rndkey0);
215 &pxor ($inout1,$rndkey0);
216 &pxor ($inout2,$rndkey0);
217 &$movekey ($rndkey0,&QWP(0,$key));
218
219 &set_label("${p}3_loop");
220 eval"&aes${p} ($inout0,$rndkey1)";
221 eval"&aes${p} ($inout1,$rndkey1)";
222 &dec ($rounds);
223 eval"&aes${p} ($inout2,$rndkey1)";
224 &$movekey ($rndkey1,&QWP(16,$key));
225 eval"&aes${p} ($inout0,$rndkey0)";
226 eval"&aes${p} ($inout1,$rndkey0)";
227 &lea ($key,&DWP(32,$key));
228 eval"&aes${p} ($inout2,$rndkey0)";
229 &$movekey ($rndkey0,&QWP(0,$key));
230 &jnz (&label("${p}3_loop"));
231 eval"&aes${p} ($inout0,$rndkey1)";
232 eval"&aes${p} ($inout1,$rndkey1)";
233 eval"&aes${p} ($inout2,$rndkey1)";
234 eval"&aes${p}last ($inout0,$rndkey0)";
235 eval"&aes${p}last ($inout1,$rndkey0)";
236 eval"&aes${p}last ($inout2,$rndkey0)";
237 &ret();
238 &function_end_B("_aesni_${p}rypt3");
239}
240
241# 4x interleave is implemented to improve small block performance,
242# most notably [and naturally] 4 block by ~30%. One can argue that one
243# should have implemented 5x as well, but improvement would be <20%,
244# so it's not worth it...
245sub aesni_generate4
246{ my $p=shift;
247
248 &function_begin_B("_aesni_${p}rypt4");
249 &$movekey ($rndkey0,&QWP(0,$key));
250 &$movekey ($rndkey1,&QWP(16,$key));
251 &shr ($rounds,1);
252 &lea ($key,&DWP(32,$key));
253 &xorps ($inout0,$rndkey0);
254 &pxor ($inout1,$rndkey0);
255 &pxor ($inout2,$rndkey0);
256 &pxor ($inout3,$rndkey0);
257 &$movekey ($rndkey0,&QWP(0,$key));
258
259 &set_label("${p}4_loop");
260 eval"&aes${p} ($inout0,$rndkey1)";
261 eval"&aes${p} ($inout1,$rndkey1)";
262 &dec ($rounds);
263 eval"&aes${p} ($inout2,$rndkey1)";
264 eval"&aes${p} ($inout3,$rndkey1)";
265 &$movekey ($rndkey1,&QWP(16,$key));
266 eval"&aes${p} ($inout0,$rndkey0)";
267 eval"&aes${p} ($inout1,$rndkey0)";
268 &lea ($key,&DWP(32,$key));
269 eval"&aes${p} ($inout2,$rndkey0)";
270 eval"&aes${p} ($inout3,$rndkey0)";
271 &$movekey ($rndkey0,&QWP(0,$key));
272 &jnz (&label("${p}4_loop"));
273
274 eval"&aes${p} ($inout0,$rndkey1)";
275 eval"&aes${p} ($inout1,$rndkey1)";
276 eval"&aes${p} ($inout2,$rndkey1)";
277 eval"&aes${p} ($inout3,$rndkey1)";
278 eval"&aes${p}last ($inout0,$rndkey0)";
279 eval"&aes${p}last ($inout1,$rndkey0)";
280 eval"&aes${p}last ($inout2,$rndkey0)";
281 eval"&aes${p}last ($inout3,$rndkey0)";
282 &ret();
283 &function_end_B("_aesni_${p}rypt4");
284}
285
286sub aesni_generate6
287{ my $p=shift;
288
289 &function_begin_B("_aesni_${p}rypt6");
290 &static_label("_aesni_${p}rypt6_enter");
291 &$movekey ($rndkey0,&QWP(0,$key));
292 &shr ($rounds,1);
293 &$movekey ($rndkey1,&QWP(16,$key));
294 &lea ($key,&DWP(32,$key));
295 &xorps ($inout0,$rndkey0);
296 &pxor ($inout1,$rndkey0); # pxor does better here
297 eval"&aes${p} ($inout0,$rndkey1)";
298 &pxor ($inout2,$rndkey0);
299 eval"&aes${p} ($inout1,$rndkey1)";
300 &pxor ($inout3,$rndkey0);
301 &dec ($rounds);
302 eval"&aes${p} ($inout2,$rndkey1)";
303 &pxor ($inout4,$rndkey0);
304 eval"&aes${p} ($inout3,$rndkey1)";
305 &pxor ($inout5,$rndkey0);
306 eval"&aes${p} ($inout4,$rndkey1)";
307 &$movekey ($rndkey0,&QWP(0,$key));
308 eval"&aes${p} ($inout5,$rndkey1)";
309 &jmp (&label("_aesni_${p}rypt6_enter"));
310
311 &set_label("${p}6_loop",16);
312 eval"&aes${p} ($inout0,$rndkey1)";
313 eval"&aes${p} ($inout1,$rndkey1)";
314 &dec ($rounds);
315 eval"&aes${p} ($inout2,$rndkey1)";
316 eval"&aes${p} ($inout3,$rndkey1)";
317 eval"&aes${p} ($inout4,$rndkey1)";
318 eval"&aes${p} ($inout5,$rndkey1)";
319 &set_label("_aesni_${p}rypt6_enter",16);
320 &$movekey ($rndkey1,&QWP(16,$key));
321 eval"&aes${p} ($inout0,$rndkey0)";
322 eval"&aes${p} ($inout1,$rndkey0)";
323 &lea ($key,&DWP(32,$key));
324 eval"&aes${p} ($inout2,$rndkey0)";
325 eval"&aes${p} ($inout3,$rndkey0)";
326 eval"&aes${p} ($inout4,$rndkey0)";
327 eval"&aes${p} ($inout5,$rndkey0)";
328 &$movekey ($rndkey0,&QWP(0,$key));
329 &jnz (&label("${p}6_loop"));
330
331 eval"&aes${p} ($inout0,$rndkey1)";
332 eval"&aes${p} ($inout1,$rndkey1)";
333 eval"&aes${p} ($inout2,$rndkey1)";
334 eval"&aes${p} ($inout3,$rndkey1)";
335 eval"&aes${p} ($inout4,$rndkey1)";
336 eval"&aes${p} ($inout5,$rndkey1)";
337 eval"&aes${p}last ($inout0,$rndkey0)";
338 eval"&aes${p}last ($inout1,$rndkey0)";
339 eval"&aes${p}last ($inout2,$rndkey0)";
340 eval"&aes${p}last ($inout3,$rndkey0)";
341 eval"&aes${p}last ($inout4,$rndkey0)";
342 eval"&aes${p}last ($inout5,$rndkey0)";
343 &ret();
344 &function_end_B("_aesni_${p}rypt6");
345}
346&aesni_generate3("enc") if ($PREFIX eq "aesni");
347&aesni_generate3("dec");
348&aesni_generate4("enc") if ($PREFIX eq "aesni");
349&aesni_generate4("dec");
350&aesni_generate6("enc") if ($PREFIX eq "aesni");
351&aesni_generate6("dec");
352
353if ($PREFIX eq "aesni") {
354######################################################################
355# void aesni_ecb_encrypt (const void *in, void *out,
356# size_t length, const AES_KEY *key,
357# int enc);
358&function_begin("aesni_ecb_encrypt");
359 &mov ($inp,&wparam(0));
360 &mov ($out,&wparam(1));
361 &mov ($len,&wparam(2));
362 &mov ($key,&wparam(3));
363 &mov ($rounds_,&wparam(4));
364 &and ($len,-16);
365 &jz (&label("ecb_ret"));
366 &mov ($rounds,&DWP(240,$key));
367 &test ($rounds_,$rounds_);
368 &jz (&label("ecb_decrypt"));
369
370 &mov ($key_,$key); # backup $key
371 &mov ($rounds_,$rounds); # backup $rounds
372 &cmp ($len,0x60);
373 &jb (&label("ecb_enc_tail"));
374
375 &movdqu ($inout0,&QWP(0,$inp));
376 &movdqu ($inout1,&QWP(0x10,$inp));
377 &movdqu ($inout2,&QWP(0x20,$inp));
378 &movdqu ($inout3,&QWP(0x30,$inp));
379 &movdqu ($inout4,&QWP(0x40,$inp));
380 &movdqu ($inout5,&QWP(0x50,$inp));
381 &lea ($inp,&DWP(0x60,$inp));
382 &sub ($len,0x60);
383 &jmp (&label("ecb_enc_loop6_enter"));
384
385&set_label("ecb_enc_loop6",16);
386 &movups (&QWP(0,$out),$inout0);
387 &movdqu ($inout0,&QWP(0,$inp));
388 &movups (&QWP(0x10,$out),$inout1);
389 &movdqu ($inout1,&QWP(0x10,$inp));
390 &movups (&QWP(0x20,$out),$inout2);
391 &movdqu ($inout2,&QWP(0x20,$inp));
392 &movups (&QWP(0x30,$out),$inout3);
393 &movdqu ($inout3,&QWP(0x30,$inp));
394 &movups (&QWP(0x40,$out),$inout4);
395 &movdqu ($inout4,&QWP(0x40,$inp));
396 &movups (&QWP(0x50,$out),$inout5);
397 &lea ($out,&DWP(0x60,$out));
398 &movdqu ($inout5,&QWP(0x50,$inp));
399 &lea ($inp,&DWP(0x60,$inp));
400&set_label("ecb_enc_loop6_enter");
401
402 &call ("_aesni_encrypt6");
403
404 &mov ($key,$key_); # restore $key
405 &mov ($rounds,$rounds_); # restore $rounds
406 &sub ($len,0x60);
407 &jnc (&label("ecb_enc_loop6"));
408
409 &movups (&QWP(0,$out),$inout0);
410 &movups (&QWP(0x10,$out),$inout1);
411 &movups (&QWP(0x20,$out),$inout2);
412 &movups (&QWP(0x30,$out),$inout3);
413 &movups (&QWP(0x40,$out),$inout4);
414 &movups (&QWP(0x50,$out),$inout5);
415 &lea ($out,&DWP(0x60,$out));
416 &add ($len,0x60);
417 &jz (&label("ecb_ret"));
418
419&set_label("ecb_enc_tail");
420 &movups ($inout0,&QWP(0,$inp));
421 &cmp ($len,0x20);
422 &jb (&label("ecb_enc_one"));
423 &movups ($inout1,&QWP(0x10,$inp));
424 &je (&label("ecb_enc_two"));
425 &movups ($inout2,&QWP(0x20,$inp));
426 &cmp ($len,0x40);
427 &jb (&label("ecb_enc_three"));
428 &movups ($inout3,&QWP(0x30,$inp));
429 &je (&label("ecb_enc_four"));
430 &movups ($inout4,&QWP(0x40,$inp));
431 &xorps ($inout5,$inout5);
432 &call ("_aesni_encrypt6");
433 &movups (&QWP(0,$out),$inout0);
434 &movups (&QWP(0x10,$out),$inout1);
435 &movups (&QWP(0x20,$out),$inout2);
436 &movups (&QWP(0x30,$out),$inout3);
437 &movups (&QWP(0x40,$out),$inout4);
438 jmp (&label("ecb_ret"));
439
440&set_label("ecb_enc_one",16);
441 if ($inline)
442 { &aesni_inline_generate1("enc"); }
443 else
444 { &call ("_aesni_encrypt1"); }
445 &movups (&QWP(0,$out),$inout0);
446 &jmp (&label("ecb_ret"));
447
448&set_label("ecb_enc_two",16);
449 &xorps ($inout2,$inout2);
450 &call ("_aesni_encrypt3");
451 &movups (&QWP(0,$out),$inout0);
452 &movups (&QWP(0x10,$out),$inout1);
453 &jmp (&label("ecb_ret"));
454
455&set_label("ecb_enc_three",16);
456 &call ("_aesni_encrypt3");
457 &movups (&QWP(0,$out),$inout0);
458 &movups (&QWP(0x10,$out),$inout1);
459 &movups (&QWP(0x20,$out),$inout2);
460 &jmp (&label("ecb_ret"));
461
462&set_label("ecb_enc_four",16);
463 &call ("_aesni_encrypt4");
464 &movups (&QWP(0,$out),$inout0);
465 &movups (&QWP(0x10,$out),$inout1);
466 &movups (&QWP(0x20,$out),$inout2);
467 &movups (&QWP(0x30,$out),$inout3);
468 &jmp (&label("ecb_ret"));
469######################################################################
470&set_label("ecb_decrypt",16);
471 &mov ($key_,$key); # backup $key
472 &mov ($rounds_,$rounds); # backup $rounds
473 &cmp ($len,0x60);
474 &jb (&label("ecb_dec_tail"));
475
476 &movdqu ($inout0,&QWP(0,$inp));
477 &movdqu ($inout1,&QWP(0x10,$inp));
478 &movdqu ($inout2,&QWP(0x20,$inp));
479 &movdqu ($inout3,&QWP(0x30,$inp));
480 &movdqu ($inout4,&QWP(0x40,$inp));
481 &movdqu ($inout5,&QWP(0x50,$inp));
482 &lea ($inp,&DWP(0x60,$inp));
483 &sub ($len,0x60);
484 &jmp (&label("ecb_dec_loop6_enter"));
485
486&set_label("ecb_dec_loop6",16);
487 &movups (&QWP(0,$out),$inout0);
488 &movdqu ($inout0,&QWP(0,$inp));
489 &movups (&QWP(0x10,$out),$inout1);
490 &movdqu ($inout1,&QWP(0x10,$inp));
491 &movups (&QWP(0x20,$out),$inout2);
492 &movdqu ($inout2,&QWP(0x20,$inp));
493 &movups (&QWP(0x30,$out),$inout3);
494 &movdqu ($inout3,&QWP(0x30,$inp));
495 &movups (&QWP(0x40,$out),$inout4);
496 &movdqu ($inout4,&QWP(0x40,$inp));
497 &movups (&QWP(0x50,$out),$inout5);
498 &lea ($out,&DWP(0x60,$out));
499 &movdqu ($inout5,&QWP(0x50,$inp));
500 &lea ($inp,&DWP(0x60,$inp));
501&set_label("ecb_dec_loop6_enter");
502
503 &call ("_aesni_decrypt6");
504
505 &mov ($key,$key_); # restore $key
506 &mov ($rounds,$rounds_); # restore $rounds
507 &sub ($len,0x60);
508 &jnc (&label("ecb_dec_loop6"));
509
510 &movups (&QWP(0,$out),$inout0);
511 &movups (&QWP(0x10,$out),$inout1);
512 &movups (&QWP(0x20,$out),$inout2);
513 &movups (&QWP(0x30,$out),$inout3);
514 &movups (&QWP(0x40,$out),$inout4);
515 &movups (&QWP(0x50,$out),$inout5);
516 &lea ($out,&DWP(0x60,$out));
517 &add ($len,0x60);
518 &jz (&label("ecb_ret"));
519
520&set_label("ecb_dec_tail");
521 &movups ($inout0,&QWP(0,$inp));
522 &cmp ($len,0x20);
523 &jb (&label("ecb_dec_one"));
524 &movups ($inout1,&QWP(0x10,$inp));
525 &je (&label("ecb_dec_two"));
526 &movups ($inout2,&QWP(0x20,$inp));
527 &cmp ($len,0x40);
528 &jb (&label("ecb_dec_three"));
529 &movups ($inout3,&QWP(0x30,$inp));
530 &je (&label("ecb_dec_four"));
531 &movups ($inout4,&QWP(0x40,$inp));
532 &xorps ($inout5,$inout5);
533 &call ("_aesni_decrypt6");
534 &movups (&QWP(0,$out),$inout0);
535 &movups (&QWP(0x10,$out),$inout1);
536 &movups (&QWP(0x20,$out),$inout2);
537 &movups (&QWP(0x30,$out),$inout3);
538 &movups (&QWP(0x40,$out),$inout4);
539 &jmp (&label("ecb_ret"));
540
541&set_label("ecb_dec_one",16);
542 if ($inline)
543 { &aesni_inline_generate1("dec"); }
544 else
545 { &call ("_aesni_decrypt1"); }
546 &movups (&QWP(0,$out),$inout0);
547 &jmp (&label("ecb_ret"));
548
549&set_label("ecb_dec_two",16);
550 &xorps ($inout2,$inout2);
551 &call ("_aesni_decrypt3");
552 &movups (&QWP(0,$out),$inout0);
553 &movups (&QWP(0x10,$out),$inout1);
554 &jmp (&label("ecb_ret"));
555
556&set_label("ecb_dec_three",16);
557 &call ("_aesni_decrypt3");
558 &movups (&QWP(0,$out),$inout0);
559 &movups (&QWP(0x10,$out),$inout1);
560 &movups (&QWP(0x20,$out),$inout2);
561 &jmp (&label("ecb_ret"));
562
563&set_label("ecb_dec_four",16);
564 &call ("_aesni_decrypt4");
565 &movups (&QWP(0,$out),$inout0);
566 &movups (&QWP(0x10,$out),$inout1);
567 &movups (&QWP(0x20,$out),$inout2);
568 &movups (&QWP(0x30,$out),$inout3);
569
570&set_label("ecb_ret");
571&function_end("aesni_ecb_encrypt");
572
573######################################################################
574# void aesni_ccm64_[en|de]crypt_blocks (const void *in, void *out,
575# size_t blocks, const AES_KEY *key,
576# const char *ivec,char *cmac);
577#
578# Handles only complete blocks, operates on 64-bit counter and
579# does not update *ivec! Nor does it finalize CMAC value
580# (see engine/eng_aesni.c for details)
581#
582{ my $cmac=$inout1;
583&function_begin("aesni_ccm64_encrypt_blocks");
584 &mov ($inp,&wparam(0));
585 &mov ($out,&wparam(1));
586 &mov ($len,&wparam(2));
587 &mov ($key,&wparam(3));
588 &mov ($rounds_,&wparam(4));
589 &mov ($rounds,&wparam(5));
590 &mov ($key_,"esp");
591 &sub ("esp",60);
592 &and ("esp",-16); # align stack
593 &mov (&DWP(48,"esp"),$key_);
594
595 &movdqu ($ivec,&QWP(0,$rounds_)); # load ivec
596 &movdqu ($cmac,&QWP(0,$rounds)); # load cmac
597 &mov ($rounds,&DWP(240,$key));
598
599 # compose byte-swap control mask for pshufb on stack
600 &mov (&DWP(0,"esp"),0x0c0d0e0f);
601 &mov (&DWP(4,"esp"),0x08090a0b);
602 &mov (&DWP(8,"esp"),0x04050607);
603 &mov (&DWP(12,"esp"),0x00010203);
604
605 # compose counter increment vector on stack
606 &mov ($rounds_,1);
607 &xor ($key_,$key_);
608 &mov (&DWP(16,"esp"),$rounds_);
609 &mov (&DWP(20,"esp"),$key_);
610 &mov (&DWP(24,"esp"),$key_);
611 &mov (&DWP(28,"esp"),$key_);
612
613 &shr ($rounds,1);
614 &lea ($key_,&DWP(0,$key));
615 &movdqa ($inout3,&QWP(0,"esp"));
616 &movdqa ($inout0,$ivec);
617 &mov ($rounds_,$rounds);
618 &pshufb ($ivec,$inout3);
619
620&set_label("ccm64_enc_outer");
621 &$movekey ($rndkey0,&QWP(0,$key_));
622 &mov ($rounds,$rounds_);
623 &movups ($in0,&QWP(0,$inp));
624
625 &xorps ($inout0,$rndkey0);
626 &$movekey ($rndkey1,&QWP(16,$key_));
627 &xorps ($rndkey0,$in0);
628 &lea ($key,&DWP(32,$key_));
629 &xorps ($cmac,$rndkey0); # cmac^=inp
630 &$movekey ($rndkey0,&QWP(0,$key));
631
632&set_label("ccm64_enc2_loop");
633 &aesenc ($inout0,$rndkey1);
634 &dec ($rounds);
635 &aesenc ($cmac,$rndkey1);
636 &$movekey ($rndkey1,&QWP(16,$key));
637 &aesenc ($inout0,$rndkey0);
638 &lea ($key,&DWP(32,$key));
639 &aesenc ($cmac,$rndkey0);
640 &$movekey ($rndkey0,&QWP(0,$key));
641 &jnz (&label("ccm64_enc2_loop"));
642 &aesenc ($inout0,$rndkey1);
643 &aesenc ($cmac,$rndkey1);
644 &paddq ($ivec,&QWP(16,"esp"));
645 &aesenclast ($inout0,$rndkey0);
646 &aesenclast ($cmac,$rndkey0);
647
648 &dec ($len);
649 &lea ($inp,&DWP(16,$inp));
650 &xorps ($in0,$inout0); # inp^=E(ivec)
651 &movdqa ($inout0,$ivec);
652 &movups (&QWP(0,$out),$in0); # save output
653 &lea ($out,&DWP(16,$out));
654 &pshufb ($inout0,$inout3);
655 &jnz (&label("ccm64_enc_outer"));
656
657 &mov ("esp",&DWP(48,"esp"));
658 &mov ($out,&wparam(5));
659 &movups (&QWP(0,$out),$cmac);
660&function_end("aesni_ccm64_encrypt_blocks");
661
662&function_begin("aesni_ccm64_decrypt_blocks");
663 &mov ($inp,&wparam(0));
664 &mov ($out,&wparam(1));
665 &mov ($len,&wparam(2));
666 &mov ($key,&wparam(3));
667 &mov ($rounds_,&wparam(4));
668 &mov ($rounds,&wparam(5));
669 &mov ($key_,"esp");
670 &sub ("esp",60);
671 &and ("esp",-16); # align stack
672 &mov (&DWP(48,"esp"),$key_);
673
674 &movdqu ($ivec,&QWP(0,$rounds_)); # load ivec
675 &movdqu ($cmac,&QWP(0,$rounds)); # load cmac
676 &mov ($rounds,&DWP(240,$key));
677
678 # compose byte-swap control mask for pshufb on stack
679 &mov (&DWP(0,"esp"),0x0c0d0e0f);
680 &mov (&DWP(4,"esp"),0x08090a0b);
681 &mov (&DWP(8,"esp"),0x04050607);
682 &mov (&DWP(12,"esp"),0x00010203);
683
684 # compose counter increment vector on stack
685 &mov ($rounds_,1);
686 &xor ($key_,$key_);
687 &mov (&DWP(16,"esp"),$rounds_);
688 &mov (&DWP(20,"esp"),$key_);
689 &mov (&DWP(24,"esp"),$key_);
690 &mov (&DWP(28,"esp"),$key_);
691
692 &movdqa ($inout3,&QWP(0,"esp")); # bswap mask
693 &movdqa ($inout0,$ivec);
694
695 &mov ($key_,$key);
696 &mov ($rounds_,$rounds);
697
698 &pshufb ($ivec,$inout3);
699 if ($inline)
700 { &aesni_inline_generate1("enc"); }
701 else
702 { &call ("_aesni_encrypt1"); }
703 &movups ($in0,&QWP(0,$inp)); # load inp
704 &paddq ($ivec,&QWP(16,"esp"));
705 &lea ($inp,&QWP(16,$inp));
706 &jmp (&label("ccm64_dec_outer"));
707
708&set_label("ccm64_dec_outer",16);
709 &xorps ($in0,$inout0); # inp ^= E(ivec)
710 &movdqa ($inout0,$ivec);
711 &mov ($rounds,$rounds_);
712 &movups (&QWP(0,$out),$in0); # save output
713 &lea ($out,&DWP(16,$out));
714 &pshufb ($inout0,$inout3);
715
716 &sub ($len,1);
717 &jz (&label("ccm64_dec_break"));
718
719 &$movekey ($rndkey0,&QWP(0,$key_));
720 &shr ($rounds,1);
721 &$movekey ($rndkey1,&QWP(16,$key_));
722 &xorps ($in0,$rndkey0);
723 &lea ($key,&DWP(32,$key_));
724 &xorps ($inout0,$rndkey0);
725 &xorps ($cmac,$in0); # cmac^=out
726 &$movekey ($rndkey0,&QWP(0,$key));
727
728&set_label("ccm64_dec2_loop");
729 &aesenc ($inout0,$rndkey1);
730 &dec ($rounds);
731 &aesenc ($cmac,$rndkey1);
732 &$movekey ($rndkey1,&QWP(16,$key));
733 &aesenc ($inout0,$rndkey0);
734 &lea ($key,&DWP(32,$key));
735 &aesenc ($cmac,$rndkey0);
736 &$movekey ($rndkey0,&QWP(0,$key));
737 &jnz (&label("ccm64_dec2_loop"));
738 &movups ($in0,&QWP(0,$inp)); # load inp
739 &paddq ($ivec,&QWP(16,"esp"));
740 &aesenc ($inout0,$rndkey1);
741 &aesenc ($cmac,$rndkey1);
742 &lea ($inp,&QWP(16,$inp));
743 &aesenclast ($inout0,$rndkey0);
744 &aesenclast ($cmac,$rndkey0);
745 &jmp (&label("ccm64_dec_outer"));
746
747&set_label("ccm64_dec_break",16);
748 &mov ($key,$key_);
749 if ($inline)
750 { &aesni_inline_generate1("enc",$cmac,$in0); }
751 else
752 { &call ("_aesni_encrypt1",$cmac); }
753
754 &mov ("esp",&DWP(48,"esp"));
755 &mov ($out,&wparam(5));
756 &movups (&QWP(0,$out),$cmac);
757&function_end("aesni_ccm64_decrypt_blocks");
758}
759
760######################################################################
761# void aesni_ctr32_encrypt_blocks (const void *in, void *out,
762# size_t blocks, const AES_KEY *key,
763# const char *ivec);
764#
765# Handles only complete blocks, operates on 32-bit counter and
766# does not update *ivec! (see engine/eng_aesni.c for details)
767#
768# stack layout:
769# 0 pshufb mask
770# 16 vector addend: 0,6,6,6
771# 32 counter-less ivec
772# 48 1st triplet of counter vector
773# 64 2nd triplet of counter vector
774# 80 saved %esp
775
776&function_begin("aesni_ctr32_encrypt_blocks");
777 &mov ($inp,&wparam(0));
778 &mov ($out,&wparam(1));
779 &mov ($len,&wparam(2));
780 &mov ($key,&wparam(3));
781 &mov ($rounds_,&wparam(4));
782 &mov ($key_,"esp");
783 &sub ("esp",88);
784 &and ("esp",-16); # align stack
785 &mov (&DWP(80,"esp"),$key_);
786
787 &cmp ($len,1);
788 &je (&label("ctr32_one_shortcut"));
789
790 &movdqu ($inout5,&QWP(0,$rounds_)); # load ivec
791
792 # compose byte-swap control mask for pshufb on stack
793 &mov (&DWP(0,"esp"),0x0c0d0e0f);
794 &mov (&DWP(4,"esp"),0x08090a0b);
795 &mov (&DWP(8,"esp"),0x04050607);
796 &mov (&DWP(12,"esp"),0x00010203);
797
798 # compose counter increment vector on stack
799 &mov ($rounds,6);
800 &xor ($key_,$key_);
801 &mov (&DWP(16,"esp"),$rounds);
802 &mov (&DWP(20,"esp"),$rounds);
803 &mov (&DWP(24,"esp"),$rounds);
804 &mov (&DWP(28,"esp"),$key_);
805
806 &pextrd ($rounds_,$inout5,3); # pull 32-bit counter
807 &pinsrd ($inout5,$key_,3); # wipe 32-bit counter
808
809 &mov ($rounds,&DWP(240,$key)); # key->rounds
810
811 # compose 2 vectors of 3x32-bit counters
812 &bswap ($rounds_);
813 &pxor ($rndkey1,$rndkey1);
814 &pxor ($rndkey0,$rndkey0);
815 &movdqa ($inout0,&QWP(0,"esp")); # load byte-swap mask
816 &pinsrd ($rndkey1,$rounds_,0);
817 &lea ($key_,&DWP(3,$rounds_));
818 &pinsrd ($rndkey0,$key_,0);
819 &inc ($rounds_);
820 &pinsrd ($rndkey1,$rounds_,1);
821 &inc ($key_);
822 &pinsrd ($rndkey0,$key_,1);
823 &inc ($rounds_);
824 &pinsrd ($rndkey1,$rounds_,2);
825 &inc ($key_);
826 &pinsrd ($rndkey0,$key_,2);
827 &movdqa (&QWP(48,"esp"),$rndkey1); # save 1st triplet
828 &pshufb ($rndkey1,$inout0); # byte swap
829 &movdqa (&QWP(64,"esp"),$rndkey0); # save 2nd triplet
830 &pshufb ($rndkey0,$inout0); # byte swap
831
832 &pshufd ($inout0,$rndkey1,3<<6); # place counter to upper dword
833 &pshufd ($inout1,$rndkey1,2<<6);
834 &cmp ($len,6);
835 &jb (&label("ctr32_tail"));
836 &movdqa (&QWP(32,"esp"),$inout5); # save counter-less ivec
837 &shr ($rounds,1);
838 &mov ($key_,$key); # backup $key
839 &mov ($rounds_,$rounds); # backup $rounds
840 &sub ($len,6);
841 &jmp (&label("ctr32_loop6"));
842
843&set_label("ctr32_loop6",16);
844 &pshufd ($inout2,$rndkey1,1<<6);
845 &movdqa ($rndkey1,&QWP(32,"esp")); # pull counter-less ivec
846 &pshufd ($inout3,$rndkey0,3<<6);
847 &por ($inout0,$rndkey1); # merge counter-less ivec
848 &pshufd ($inout4,$rndkey0,2<<6);
849 &por ($inout1,$rndkey1);
850 &pshufd ($inout5,$rndkey0,1<<6);
851 &por ($inout2,$rndkey1);
852 &por ($inout3,$rndkey1);
853 &por ($inout4,$rndkey1);
854 &por ($inout5,$rndkey1);
855
856 # inlining _aesni_encrypt6's prologue gives ~4% improvement...
857 &$movekey ($rndkey0,&QWP(0,$key_));
858 &$movekey ($rndkey1,&QWP(16,$key_));
859 &lea ($key,&DWP(32,$key_));
860 &dec ($rounds);
861 &pxor ($inout0,$rndkey0);
862 &pxor ($inout1,$rndkey0);
863 &aesenc ($inout0,$rndkey1);
864 &pxor ($inout2,$rndkey0);
865 &aesenc ($inout1,$rndkey1);
866 &pxor ($inout3,$rndkey0);
867 &aesenc ($inout2,$rndkey1);
868 &pxor ($inout4,$rndkey0);
869 &aesenc ($inout3,$rndkey1);
870 &pxor ($inout5,$rndkey0);
871 &aesenc ($inout4,$rndkey1);
872 &$movekey ($rndkey0,&QWP(0,$key));
873 &aesenc ($inout5,$rndkey1);
874
875 &call (&label("_aesni_encrypt6_enter"));
876
877 &movups ($rndkey1,&QWP(0,$inp));
878 &movups ($rndkey0,&QWP(0x10,$inp));
879 &xorps ($inout0,$rndkey1);
880 &movups ($rndkey1,&QWP(0x20,$inp));
881 &xorps ($inout1,$rndkey0);
882 &movups (&QWP(0,$out),$inout0);
883 &movdqa ($rndkey0,&QWP(16,"esp")); # load increment
884 &xorps ($inout2,$rndkey1);
885 &movdqa ($rndkey1,&QWP(48,"esp")); # load 1st triplet
886 &movups (&QWP(0x10,$out),$inout1);
887 &movups (&QWP(0x20,$out),$inout2);
888
889 &paddd ($rndkey1,$rndkey0); # 1st triplet increment
890 &paddd ($rndkey0,&QWP(64,"esp")); # 2nd triplet increment
891 &movdqa ($inout0,&QWP(0,"esp")); # load byte swap mask
892
893 &movups ($inout1,&QWP(0x30,$inp));
894 &movups ($inout2,&QWP(0x40,$inp));
895 &xorps ($inout3,$inout1);
896 &movups ($inout1,&QWP(0x50,$inp));
897 &lea ($inp,&DWP(0x60,$inp));
898 &movdqa (&QWP(48,"esp"),$rndkey1); # save 1st triplet
899 &pshufb ($rndkey1,$inout0); # byte swap
900 &xorps ($inout4,$inout2);
901 &movups (&QWP(0x30,$out),$inout3);
902 &xorps ($inout5,$inout1);
903 &movdqa (&QWP(64,"esp"),$rndkey0); # save 2nd triplet
904 &pshufb ($rndkey0,$inout0); # byte swap
905 &movups (&QWP(0x40,$out),$inout4);
906 &pshufd ($inout0,$rndkey1,3<<6);
907 &movups (&QWP(0x50,$out),$inout5);
908 &lea ($out,&DWP(0x60,$out));
909
910 &mov ($rounds,$rounds_);
911 &pshufd ($inout1,$rndkey1,2<<6);
912 &sub ($len,6);
913 &jnc (&label("ctr32_loop6"));
914
915 &add ($len,6);
916 &jz (&label("ctr32_ret"));
917 &mov ($key,$key_);
918 &lea ($rounds,&DWP(1,"",$rounds,2)); # restore $rounds
919 &movdqa ($inout5,&QWP(32,"esp")); # pull count-less ivec
920
921&set_label("ctr32_tail");
922 &por ($inout0,$inout5);
923 &cmp ($len,2);
924 &jb (&label("ctr32_one"));
925
926 &pshufd ($inout2,$rndkey1,1<<6);
927 &por ($inout1,$inout5);
928 &je (&label("ctr32_two"));
929
930 &pshufd ($inout3,$rndkey0,3<<6);
931 &por ($inout2,$inout5);
932 &cmp ($len,4);
933 &jb (&label("ctr32_three"));
934
935 &pshufd ($inout4,$rndkey0,2<<6);
936 &por ($inout3,$inout5);
937 &je (&label("ctr32_four"));
938
939 &por ($inout4,$inout5);
940 &call ("_aesni_encrypt6");
941 &movups ($rndkey1,&QWP(0,$inp));
942 &movups ($rndkey0,&QWP(0x10,$inp));
943 &xorps ($inout0,$rndkey1);
944 &movups ($rndkey1,&QWP(0x20,$inp));
945 &xorps ($inout1,$rndkey0);
946 &movups ($rndkey0,&QWP(0x30,$inp));
947 &xorps ($inout2,$rndkey1);
948 &movups ($rndkey1,&QWP(0x40,$inp));
949 &xorps ($inout3,$rndkey0);
950 &movups (&QWP(0,$out),$inout0);
951 &xorps ($inout4,$rndkey1);
952 &movups (&QWP(0x10,$out),$inout1);
953 &movups (&QWP(0x20,$out),$inout2);
954 &movups (&QWP(0x30,$out),$inout3);
955 &movups (&QWP(0x40,$out),$inout4);
956 &jmp (&label("ctr32_ret"));
957
958&set_label("ctr32_one_shortcut",16);
959 &movups ($inout0,&QWP(0,$rounds_)); # load ivec
960 &mov ($rounds,&DWP(240,$key));
961
962&set_label("ctr32_one");
963 if ($inline)
964 { &aesni_inline_generate1("enc"); }
965 else
966 { &call ("_aesni_encrypt1"); }
967 &movups ($in0,&QWP(0,$inp));
968 &xorps ($in0,$inout0);
969 &movups (&QWP(0,$out),$in0);
970 &jmp (&label("ctr32_ret"));
971
972&set_label("ctr32_two",16);
973 &call ("_aesni_encrypt3");
974 &movups ($inout3,&QWP(0,$inp));
975 &movups ($inout4,&QWP(0x10,$inp));
976 &xorps ($inout0,$inout3);
977 &xorps ($inout1,$inout4);
978 &movups (&QWP(0,$out),$inout0);
979 &movups (&QWP(0x10,$out),$inout1);
980 &jmp (&label("ctr32_ret"));
981
982&set_label("ctr32_three",16);
983 &call ("_aesni_encrypt3");
984 &movups ($inout3,&QWP(0,$inp));
985 &movups ($inout4,&QWP(0x10,$inp));
986 &xorps ($inout0,$inout3);
987 &movups ($inout5,&QWP(0x20,$inp));
988 &xorps ($inout1,$inout4);
989 &movups (&QWP(0,$out),$inout0);
990 &xorps ($inout2,$inout5);
991 &movups (&QWP(0x10,$out),$inout1);
992 &movups (&QWP(0x20,$out),$inout2);
993 &jmp (&label("ctr32_ret"));
994
995&set_label("ctr32_four",16);
996 &call ("_aesni_encrypt4");
997 &movups ($inout4,&QWP(0,$inp));
998 &movups ($inout5,&QWP(0x10,$inp));
999 &movups ($rndkey1,&QWP(0x20,$inp));
1000 &xorps ($inout0,$inout4);
1001 &movups ($rndkey0,&QWP(0x30,$inp));
1002 &xorps ($inout1,$inout5);
1003 &movups (&QWP(0,$out),$inout0);
1004 &xorps ($inout2,$rndkey1);
1005 &movups (&QWP(0x10,$out),$inout1);
1006 &xorps ($inout3,$rndkey0);
1007 &movups (&QWP(0x20,$out),$inout2);
1008 &movups (&QWP(0x30,$out),$inout3);
1009
1010&set_label("ctr32_ret");
1011 &mov ("esp",&DWP(80,"esp"));
1012&function_end("aesni_ctr32_encrypt_blocks");
1013
1014######################################################################
1015# void aesni_xts_[en|de]crypt(const char *inp,char *out,size_t len,
1016# const AES_KEY *key1, const AES_KEY *key2
1017# const unsigned char iv[16]);
1018#
1019{ my ($tweak,$twtmp,$twres,$twmask)=($rndkey1,$rndkey0,$inout0,$inout1);
1020
1021&function_begin("aesni_xts_encrypt");
1022 &mov ($key,&wparam(4)); # key2
1023 &mov ($inp,&wparam(5)); # clear-text tweak
1024
1025 &mov ($rounds,&DWP(240,$key)); # key2->rounds
1026 &movups ($inout0,&QWP(0,$inp));
1027 if ($inline)
1028 { &aesni_inline_generate1("enc"); }
1029 else
1030 { &call ("_aesni_encrypt1"); }
1031
1032 &mov ($inp,&wparam(0));
1033 &mov ($out,&wparam(1));
1034 &mov ($len,&wparam(2));
1035 &mov ($key,&wparam(3)); # key1
1036
1037 &mov ($key_,"esp");
1038 &sub ("esp",16*7+8);
1039 &mov ($rounds,&DWP(240,$key)); # key1->rounds
1040 &and ("esp",-16); # align stack
1041
1042 &mov (&DWP(16*6+0,"esp"),0x87); # compose the magic constant
1043 &mov (&DWP(16*6+4,"esp"),0);
1044 &mov (&DWP(16*6+8,"esp"),1);
1045 &mov (&DWP(16*6+12,"esp"),0);
1046 &mov (&DWP(16*7+0,"esp"),$len); # save original $len
1047 &mov (&DWP(16*7+4,"esp"),$key_); # save original %esp
1048
1049 &movdqa ($tweak,$inout0);
1050 &pxor ($twtmp,$twtmp);
1051 &movdqa ($twmask,&QWP(6*16,"esp")); # 0x0...010...87
1052 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1053
1054 &and ($len,-16);
1055 &mov ($key_,$key); # backup $key
1056 &mov ($rounds_,$rounds); # backup $rounds
1057 &sub ($len,16*6);
1058 &jc (&label("xts_enc_short"));
1059
1060 &shr ($rounds,1);
1061 &mov ($rounds_,$rounds);
1062 &jmp (&label("xts_enc_loop6"));
1063
1064&set_label("xts_enc_loop6",16);
1065 for ($i=0;$i<4;$i++) {
1066 &pshufd ($twres,$twtmp,0x13);
1067 &pxor ($twtmp,$twtmp);
1068 &movdqa (&QWP(16*$i,"esp"),$tweak);
1069 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1070 &pand ($twres,$twmask); # isolate carry and residue
1071 &pcmpgtd ($twtmp,$tweak); # broadcast upper bits
1072 &pxor ($tweak,$twres);
1073 }
1074 &pshufd ($inout5,$twtmp,0x13);
1075 &movdqa (&QWP(16*$i++,"esp"),$tweak);
1076 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1077 &$movekey ($rndkey0,&QWP(0,$key_));
1078 &pand ($inout5,$twmask); # isolate carry and residue
1079 &movups ($inout0,&QWP(0,$inp)); # load input
1080 &pxor ($inout5,$tweak);
1081
1082 # inline _aesni_encrypt6 prologue and flip xor with tweak and key[0]
1083 &movdqu ($inout1,&QWP(16*1,$inp));
1084 &xorps ($inout0,$rndkey0); # input^=rndkey[0]
1085 &movdqu ($inout2,&QWP(16*2,$inp));
1086 &pxor ($inout1,$rndkey0);
1087 &movdqu ($inout3,&QWP(16*3,$inp));
1088 &pxor ($inout2,$rndkey0);
1089 &movdqu ($inout4,&QWP(16*4,$inp));
1090 &pxor ($inout3,$rndkey0);
1091 &movdqu ($rndkey1,&QWP(16*5,$inp));
1092 &pxor ($inout4,$rndkey0);
1093 &lea ($inp,&DWP(16*6,$inp));
1094 &pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
1095 &movdqa (&QWP(16*$i,"esp"),$inout5); # save last tweak
1096 &pxor ($inout5,$rndkey1);
1097
1098 &$movekey ($rndkey1,&QWP(16,$key_));
1099 &lea ($key,&DWP(32,$key_));
1100 &pxor ($inout1,&QWP(16*1,"esp"));
1101 &aesenc ($inout0,$rndkey1);
1102 &pxor ($inout2,&QWP(16*2,"esp"));
1103 &aesenc ($inout1,$rndkey1);
1104 &pxor ($inout3,&QWP(16*3,"esp"));
1105 &dec ($rounds);
1106 &aesenc ($inout2,$rndkey1);
1107 &pxor ($inout4,&QWP(16*4,"esp"));
1108 &aesenc ($inout3,$rndkey1);
1109 &pxor ($inout5,$rndkey0);
1110 &aesenc ($inout4,$rndkey1);
1111 &$movekey ($rndkey0,&QWP(0,$key));
1112 &aesenc ($inout5,$rndkey1);
1113 &call (&label("_aesni_encrypt6_enter"));
1114
1115 &movdqa ($tweak,&QWP(16*5,"esp")); # last tweak
1116 &pxor ($twtmp,$twtmp);
1117 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1118 &pcmpgtd ($twtmp,$tweak); # broadcast upper bits
1119 &xorps ($inout1,&QWP(16*1,"esp"));
1120 &movups (&QWP(16*0,$out),$inout0); # write output
1121 &xorps ($inout2,&QWP(16*2,"esp"));
1122 &movups (&QWP(16*1,$out),$inout1);
1123 &xorps ($inout3,&QWP(16*3,"esp"));
1124 &movups (&QWP(16*2,$out),$inout2);
1125 &xorps ($inout4,&QWP(16*4,"esp"));
1126 &movups (&QWP(16*3,$out),$inout3);
1127 &xorps ($inout5,$tweak);
1128 &movups (&QWP(16*4,$out),$inout4);
1129 &pshufd ($twres,$twtmp,0x13);
1130 &movups (&QWP(16*5,$out),$inout5);
1131 &lea ($out,&DWP(16*6,$out));
1132 &movdqa ($twmask,&QWP(16*6,"esp")); # 0x0...010...87
1133
1134 &pxor ($twtmp,$twtmp);
1135 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1136 &pand ($twres,$twmask); # isolate carry and residue
1137 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1138 &mov ($rounds,$rounds_); # restore $rounds
1139 &pxor ($tweak,$twres);
1140
1141 &sub ($len,16*6);
1142 &jnc (&label("xts_enc_loop6"));
1143
1144 &lea ($rounds,&DWP(1,"",$rounds,2)); # restore $rounds
1145 &mov ($key,$key_); # restore $key
1146 &mov ($rounds_,$rounds);
1147
1148&set_label("xts_enc_short");
1149 &add ($len,16*6);
1150 &jz (&label("xts_enc_done6x"));
1151
1152 &movdqa ($inout3,$tweak); # put aside previous tweak
1153 &cmp ($len,0x20);
1154 &jb (&label("xts_enc_one"));
1155
1156 &pshufd ($twres,$twtmp,0x13);
1157 &pxor ($twtmp,$twtmp);
1158 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1159 &pand ($twres,$twmask); # isolate carry and residue
1160 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1161 &pxor ($tweak,$twres);
1162 &je (&label("xts_enc_two"));
1163
1164 &pshufd ($twres,$twtmp,0x13);
1165 &pxor ($twtmp,$twtmp);
1166 &movdqa ($inout4,$tweak); # put aside previous tweak
1167 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1168 &pand ($twres,$twmask); # isolate carry and residue
1169 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1170 &pxor ($tweak,$twres);
1171 &cmp ($len,0x40);
1172 &jb (&label("xts_enc_three"));
1173
1174 &pshufd ($twres,$twtmp,0x13);
1175 &pxor ($twtmp,$twtmp);
1176 &movdqa ($inout5,$tweak); # put aside previous tweak
1177 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1178 &pand ($twres,$twmask); # isolate carry and residue
1179 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1180 &pxor ($tweak,$twres);
1181 &movdqa (&QWP(16*0,"esp"),$inout3);
1182 &movdqa (&QWP(16*1,"esp"),$inout4);
1183 &je (&label("xts_enc_four"));
1184
1185 &movdqa (&QWP(16*2,"esp"),$inout5);
1186 &pshufd ($inout5,$twtmp,0x13);
1187 &movdqa (&QWP(16*3,"esp"),$tweak);
1188 &paddq ($tweak,$tweak); # &psllq($inout0,1);
1189 &pand ($inout5,$twmask); # isolate carry and residue
1190 &pxor ($inout5,$tweak);
1191
1192 &movdqu ($inout0,&QWP(16*0,$inp)); # load input
1193 &movdqu ($inout1,&QWP(16*1,$inp));
1194 &movdqu ($inout2,&QWP(16*2,$inp));
1195 &pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
1196 &movdqu ($inout3,&QWP(16*3,$inp));
1197 &pxor ($inout1,&QWP(16*1,"esp"));
1198 &movdqu ($inout4,&QWP(16*4,$inp));
1199 &pxor ($inout2,&QWP(16*2,"esp"));
1200 &lea ($inp,&DWP(16*5,$inp));
1201 &pxor ($inout3,&QWP(16*3,"esp"));
1202 &movdqa (&QWP(16*4,"esp"),$inout5); # save last tweak
1203 &pxor ($inout4,$inout5);
1204
1205 &call ("_aesni_encrypt6");
1206
1207 &movaps ($tweak,&QWP(16*4,"esp")); # last tweak
1208 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1209 &xorps ($inout1,&QWP(16*1,"esp"));
1210 &xorps ($inout2,&QWP(16*2,"esp"));
1211 &movups (&QWP(16*0,$out),$inout0); # write output
1212 &xorps ($inout3,&QWP(16*3,"esp"));
1213 &movups (&QWP(16*1,$out),$inout1);
1214 &xorps ($inout4,$tweak);
1215 &movups (&QWP(16*2,$out),$inout2);
1216 &movups (&QWP(16*3,$out),$inout3);
1217 &movups (&QWP(16*4,$out),$inout4);
1218 &lea ($out,&DWP(16*5,$out));
1219 &jmp (&label("xts_enc_done"));
1220
1221&set_label("xts_enc_one",16);
1222 &movups ($inout0,&QWP(16*0,$inp)); # load input
1223 &lea ($inp,&DWP(16*1,$inp));
1224 &xorps ($inout0,$inout3); # input^=tweak
1225 if ($inline)
1226 { &aesni_inline_generate1("enc"); }
1227 else
1228 { &call ("_aesni_encrypt1"); }
1229 &xorps ($inout0,$inout3); # output^=tweak
1230 &movups (&QWP(16*0,$out),$inout0); # write output
1231 &lea ($out,&DWP(16*1,$out));
1232
1233 &movdqa ($tweak,$inout3); # last tweak
1234 &jmp (&label("xts_enc_done"));
1235
1236&set_label("xts_enc_two",16);
1237 &movaps ($inout4,$tweak); # put aside last tweak
1238
1239 &movups ($inout0,&QWP(16*0,$inp)); # load input
1240 &movups ($inout1,&QWP(16*1,$inp));
1241 &lea ($inp,&DWP(16*2,$inp));
1242 &xorps ($inout0,$inout3); # input^=tweak
1243 &xorps ($inout1,$inout4);
1244 &xorps ($inout2,$inout2);
1245
1246 &call ("_aesni_encrypt3");
1247
1248 &xorps ($inout0,$inout3); # output^=tweak
1249 &xorps ($inout1,$inout4);
1250 &movups (&QWP(16*0,$out),$inout0); # write output
1251 &movups (&QWP(16*1,$out),$inout1);
1252 &lea ($out,&DWP(16*2,$out));
1253
1254 &movdqa ($tweak,$inout4); # last tweak
1255 &jmp (&label("xts_enc_done"));
1256
1257&set_label("xts_enc_three",16);
1258 &movaps ($inout5,$tweak); # put aside last tweak
1259 &movups ($inout0,&QWP(16*0,$inp)); # load input
1260 &movups ($inout1,&QWP(16*1,$inp));
1261 &movups ($inout2,&QWP(16*2,$inp));
1262 &lea ($inp,&DWP(16*3,$inp));
1263 &xorps ($inout0,$inout3); # input^=tweak
1264 &xorps ($inout1,$inout4);
1265 &xorps ($inout2,$inout5);
1266
1267 &call ("_aesni_encrypt3");
1268
1269 &xorps ($inout0,$inout3); # output^=tweak
1270 &xorps ($inout1,$inout4);
1271 &xorps ($inout2,$inout5);
1272 &movups (&QWP(16*0,$out),$inout0); # write output
1273 &movups (&QWP(16*1,$out),$inout1);
1274 &movups (&QWP(16*2,$out),$inout2);
1275 &lea ($out,&DWP(16*3,$out));
1276
1277 &movdqa ($tweak,$inout5); # last tweak
1278 &jmp (&label("xts_enc_done"));
1279
1280&set_label("xts_enc_four",16);
1281 &movaps ($inout4,$tweak); # put aside last tweak
1282
1283 &movups ($inout0,&QWP(16*0,$inp)); # load input
1284 &movups ($inout1,&QWP(16*1,$inp));
1285 &movups ($inout2,&QWP(16*2,$inp));
1286 &xorps ($inout0,&QWP(16*0,"esp")); # input^=tweak
1287 &movups ($inout3,&QWP(16*3,$inp));
1288 &lea ($inp,&DWP(16*4,$inp));
1289 &xorps ($inout1,&QWP(16*1,"esp"));
1290 &xorps ($inout2,$inout5);
1291 &xorps ($inout3,$inout4);
1292
1293 &call ("_aesni_encrypt4");
1294
1295 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1296 &xorps ($inout1,&QWP(16*1,"esp"));
1297 &xorps ($inout2,$inout5);
1298 &movups (&QWP(16*0,$out),$inout0); # write output
1299 &xorps ($inout3,$inout4);
1300 &movups (&QWP(16*1,$out),$inout1);
1301 &movups (&QWP(16*2,$out),$inout2);
1302 &movups (&QWP(16*3,$out),$inout3);
1303 &lea ($out,&DWP(16*4,$out));
1304
1305 &movdqa ($tweak,$inout4); # last tweak
1306 &jmp (&label("xts_enc_done"));
1307
1308&set_label("xts_enc_done6x",16); # $tweak is pre-calculated
1309 &mov ($len,&DWP(16*7+0,"esp")); # restore original $len
1310 &and ($len,15);
1311 &jz (&label("xts_enc_ret"));
1312 &movdqa ($inout3,$tweak);
1313 &mov (&DWP(16*7+0,"esp"),$len); # save $len%16
1314 &jmp (&label("xts_enc_steal"));
1315
1316&set_label("xts_enc_done",16);
1317 &mov ($len,&DWP(16*7+0,"esp")); # restore original $len
1318 &pxor ($twtmp,$twtmp);
1319 &and ($len,15);
1320 &jz (&label("xts_enc_ret"));
1321
1322 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1323 &mov (&DWP(16*7+0,"esp"),$len); # save $len%16
1324 &pshufd ($inout3,$twtmp,0x13);
1325 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1326 &pand ($inout3,&QWP(16*6,"esp")); # isolate carry and residue
1327 &pxor ($inout3,$tweak);
1328
1329&set_label("xts_enc_steal");
1330 &movz ($rounds,&BP(0,$inp));
1331 &movz ($key,&BP(-16,$out));
1332 &lea ($inp,&DWP(1,$inp));
1333 &mov (&BP(-16,$out),&LB($rounds));
1334 &mov (&BP(0,$out),&LB($key));
1335 &lea ($out,&DWP(1,$out));
1336 &sub ($len,1);
1337 &jnz (&label("xts_enc_steal"));
1338
1339 &sub ($out,&DWP(16*7+0,"esp")); # rewind $out
1340 &mov ($key,$key_); # restore $key
1341 &mov ($rounds,$rounds_); # restore $rounds
1342
1343 &movups ($inout0,&QWP(-16,$out)); # load input
1344 &xorps ($inout0,$inout3); # input^=tweak
1345 if ($inline)
1346 { &aesni_inline_generate1("enc"); }
1347 else
1348 { &call ("_aesni_encrypt1"); }
1349 &xorps ($inout0,$inout3); # output^=tweak
1350 &movups (&QWP(-16,$out),$inout0); # write output
1351
1352&set_label("xts_enc_ret");
1353 &mov ("esp",&DWP(16*7+4,"esp")); # restore %esp
1354&function_end("aesni_xts_encrypt");
1355
1356&function_begin("aesni_xts_decrypt");
1357 &mov ($key,&wparam(4)); # key2
1358 &mov ($inp,&wparam(5)); # clear-text tweak
1359
1360 &mov ($rounds,&DWP(240,$key)); # key2->rounds
1361 &movups ($inout0,&QWP(0,$inp));
1362 if ($inline)
1363 { &aesni_inline_generate1("enc"); }
1364 else
1365 { &call ("_aesni_encrypt1"); }
1366
1367 &mov ($inp,&wparam(0));
1368 &mov ($out,&wparam(1));
1369 &mov ($len,&wparam(2));
1370 &mov ($key,&wparam(3)); # key1
1371
1372 &mov ($key_,"esp");
1373 &sub ("esp",16*7+8);
1374 &and ("esp",-16); # align stack
1375
1376 &xor ($rounds_,$rounds_); # if(len%16) len-=16;
1377 &test ($len,15);
1378 &setnz (&LB($rounds_));
1379 &shl ($rounds_,4);
1380 &sub ($len,$rounds_);
1381
1382 &mov (&DWP(16*6+0,"esp"),0x87); # compose the magic constant
1383 &mov (&DWP(16*6+4,"esp"),0);
1384 &mov (&DWP(16*6+8,"esp"),1);
1385 &mov (&DWP(16*6+12,"esp"),0);
1386 &mov (&DWP(16*7+0,"esp"),$len); # save original $len
1387 &mov (&DWP(16*7+4,"esp"),$key_); # save original %esp
1388
1389 &mov ($rounds,&DWP(240,$key)); # key1->rounds
1390 &mov ($key_,$key); # backup $key
1391 &mov ($rounds_,$rounds); # backup $rounds
1392
1393 &movdqa ($tweak,$inout0);
1394 &pxor ($twtmp,$twtmp);
1395 &movdqa ($twmask,&QWP(6*16,"esp")); # 0x0...010...87
1396 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1397
1398 &and ($len,-16);
1399 &sub ($len,16*6);
1400 &jc (&label("xts_dec_short"));
1401
1402 &shr ($rounds,1);
1403 &mov ($rounds_,$rounds);
1404 &jmp (&label("xts_dec_loop6"));
1405
1406&set_label("xts_dec_loop6",16);
1407 for ($i=0;$i<4;$i++) {
1408 &pshufd ($twres,$twtmp,0x13);
1409 &pxor ($twtmp,$twtmp);
1410 &movdqa (&QWP(16*$i,"esp"),$tweak);
1411 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1412 &pand ($twres,$twmask); # isolate carry and residue
1413 &pcmpgtd ($twtmp,$tweak); # broadcast upper bits
1414 &pxor ($tweak,$twres);
1415 }
1416 &pshufd ($inout5,$twtmp,0x13);
1417 &movdqa (&QWP(16*$i++,"esp"),$tweak);
1418 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1419 &$movekey ($rndkey0,&QWP(0,$key_));
1420 &pand ($inout5,$twmask); # isolate carry and residue
1421 &movups ($inout0,&QWP(0,$inp)); # load input
1422 &pxor ($inout5,$tweak);
1423
1424 # inline _aesni_encrypt6 prologue and flip xor with tweak and key[0]
1425 &movdqu ($inout1,&QWP(16*1,$inp));
1426 &xorps ($inout0,$rndkey0); # input^=rndkey[0]
1427 &movdqu ($inout2,&QWP(16*2,$inp));
1428 &pxor ($inout1,$rndkey0);
1429 &movdqu ($inout3,&QWP(16*3,$inp));
1430 &pxor ($inout2,$rndkey0);
1431 &movdqu ($inout4,&QWP(16*4,$inp));
1432 &pxor ($inout3,$rndkey0);
1433 &movdqu ($rndkey1,&QWP(16*5,$inp));
1434 &pxor ($inout4,$rndkey0);
1435 &lea ($inp,&DWP(16*6,$inp));
1436 &pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
1437 &movdqa (&QWP(16*$i,"esp"),$inout5); # save last tweak
1438 &pxor ($inout5,$rndkey1);
1439
1440 &$movekey ($rndkey1,&QWP(16,$key_));
1441 &lea ($key,&DWP(32,$key_));
1442 &pxor ($inout1,&QWP(16*1,"esp"));
1443 &aesdec ($inout0,$rndkey1);
1444 &pxor ($inout2,&QWP(16*2,"esp"));
1445 &aesdec ($inout1,$rndkey1);
1446 &pxor ($inout3,&QWP(16*3,"esp"));
1447 &dec ($rounds);
1448 &aesdec ($inout2,$rndkey1);
1449 &pxor ($inout4,&QWP(16*4,"esp"));
1450 &aesdec ($inout3,$rndkey1);
1451 &pxor ($inout5,$rndkey0);
1452 &aesdec ($inout4,$rndkey1);
1453 &$movekey ($rndkey0,&QWP(0,$key));
1454 &aesdec ($inout5,$rndkey1);
1455 &call (&label("_aesni_decrypt6_enter"));
1456
1457 &movdqa ($tweak,&QWP(16*5,"esp")); # last tweak
1458 &pxor ($twtmp,$twtmp);
1459 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1460 &pcmpgtd ($twtmp,$tweak); # broadcast upper bits
1461 &xorps ($inout1,&QWP(16*1,"esp"));
1462 &movups (&QWP(16*0,$out),$inout0); # write output
1463 &xorps ($inout2,&QWP(16*2,"esp"));
1464 &movups (&QWP(16*1,$out),$inout1);
1465 &xorps ($inout3,&QWP(16*3,"esp"));
1466 &movups (&QWP(16*2,$out),$inout2);
1467 &xorps ($inout4,&QWP(16*4,"esp"));
1468 &movups (&QWP(16*3,$out),$inout3);
1469 &xorps ($inout5,$tweak);
1470 &movups (&QWP(16*4,$out),$inout4);
1471 &pshufd ($twres,$twtmp,0x13);
1472 &movups (&QWP(16*5,$out),$inout5);
1473 &lea ($out,&DWP(16*6,$out));
1474 &movdqa ($twmask,&QWP(16*6,"esp")); # 0x0...010...87
1475
1476 &pxor ($twtmp,$twtmp);
1477 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1478 &pand ($twres,$twmask); # isolate carry and residue
1479 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1480 &mov ($rounds,$rounds_); # restore $rounds
1481 &pxor ($tweak,$twres);
1482
1483 &sub ($len,16*6);
1484 &jnc (&label("xts_dec_loop6"));
1485
1486 &lea ($rounds,&DWP(1,"",$rounds,2)); # restore $rounds
1487 &mov ($key,$key_); # restore $key
1488 &mov ($rounds_,$rounds);
1489
1490&set_label("xts_dec_short");
1491 &add ($len,16*6);
1492 &jz (&label("xts_dec_done6x"));
1493
1494 &movdqa ($inout3,$tweak); # put aside previous tweak
1495 &cmp ($len,0x20);
1496 &jb (&label("xts_dec_one"));
1497
1498 &pshufd ($twres,$twtmp,0x13);
1499 &pxor ($twtmp,$twtmp);
1500 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1501 &pand ($twres,$twmask); # isolate carry and residue
1502 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1503 &pxor ($tweak,$twres);
1504 &je (&label("xts_dec_two"));
1505
1506 &pshufd ($twres,$twtmp,0x13);
1507 &pxor ($twtmp,$twtmp);
1508 &movdqa ($inout4,$tweak); # put aside previous tweak
1509 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1510 &pand ($twres,$twmask); # isolate carry and residue
1511 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1512 &pxor ($tweak,$twres);
1513 &cmp ($len,0x40);
1514 &jb (&label("xts_dec_three"));
1515
1516 &pshufd ($twres,$twtmp,0x13);
1517 &pxor ($twtmp,$twtmp);
1518 &movdqa ($inout5,$tweak); # put aside previous tweak
1519 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1520 &pand ($twres,$twmask); # isolate carry and residue
1521 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1522 &pxor ($tweak,$twres);
1523 &movdqa (&QWP(16*0,"esp"),$inout3);
1524 &movdqa (&QWP(16*1,"esp"),$inout4);
1525 &je (&label("xts_dec_four"));
1526
1527 &movdqa (&QWP(16*2,"esp"),$inout5);
1528 &pshufd ($inout5,$twtmp,0x13);
1529 &movdqa (&QWP(16*3,"esp"),$tweak);
1530 &paddq ($tweak,$tweak); # &psllq($inout0,1);
1531 &pand ($inout5,$twmask); # isolate carry and residue
1532 &pxor ($inout5,$tweak);
1533
1534 &movdqu ($inout0,&QWP(16*0,$inp)); # load input
1535 &movdqu ($inout1,&QWP(16*1,$inp));
1536 &movdqu ($inout2,&QWP(16*2,$inp));
1537 &pxor ($inout0,&QWP(16*0,"esp")); # input^=tweak
1538 &movdqu ($inout3,&QWP(16*3,$inp));
1539 &pxor ($inout1,&QWP(16*1,"esp"));
1540 &movdqu ($inout4,&QWP(16*4,$inp));
1541 &pxor ($inout2,&QWP(16*2,"esp"));
1542 &lea ($inp,&DWP(16*5,$inp));
1543 &pxor ($inout3,&QWP(16*3,"esp"));
1544 &movdqa (&QWP(16*4,"esp"),$inout5); # save last tweak
1545 &pxor ($inout4,$inout5);
1546
1547 &call ("_aesni_decrypt6");
1548
1549 &movaps ($tweak,&QWP(16*4,"esp")); # last tweak
1550 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1551 &xorps ($inout1,&QWP(16*1,"esp"));
1552 &xorps ($inout2,&QWP(16*2,"esp"));
1553 &movups (&QWP(16*0,$out),$inout0); # write output
1554 &xorps ($inout3,&QWP(16*3,"esp"));
1555 &movups (&QWP(16*1,$out),$inout1);
1556 &xorps ($inout4,$tweak);
1557 &movups (&QWP(16*2,$out),$inout2);
1558 &movups (&QWP(16*3,$out),$inout3);
1559 &movups (&QWP(16*4,$out),$inout4);
1560 &lea ($out,&DWP(16*5,$out));
1561 &jmp (&label("xts_dec_done"));
1562
1563&set_label("xts_dec_one",16);
1564 &movups ($inout0,&QWP(16*0,$inp)); # load input
1565 &lea ($inp,&DWP(16*1,$inp));
1566 &xorps ($inout0,$inout3); # input^=tweak
1567 if ($inline)
1568 { &aesni_inline_generate1("dec"); }
1569 else
1570 { &call ("_aesni_decrypt1"); }
1571 &xorps ($inout0,$inout3); # output^=tweak
1572 &movups (&QWP(16*0,$out),$inout0); # write output
1573 &lea ($out,&DWP(16*1,$out));
1574
1575 &movdqa ($tweak,$inout3); # last tweak
1576 &jmp (&label("xts_dec_done"));
1577
1578&set_label("xts_dec_two",16);
1579 &movaps ($inout4,$tweak); # put aside last tweak
1580
1581 &movups ($inout0,&QWP(16*0,$inp)); # load input
1582 &movups ($inout1,&QWP(16*1,$inp));
1583 &lea ($inp,&DWP(16*2,$inp));
1584 &xorps ($inout0,$inout3); # input^=tweak
1585 &xorps ($inout1,$inout4);
1586
1587 &call ("_aesni_decrypt3");
1588
1589 &xorps ($inout0,$inout3); # output^=tweak
1590 &xorps ($inout1,$inout4);
1591 &movups (&QWP(16*0,$out),$inout0); # write output
1592 &movups (&QWP(16*1,$out),$inout1);
1593 &lea ($out,&DWP(16*2,$out));
1594
1595 &movdqa ($tweak,$inout4); # last tweak
1596 &jmp (&label("xts_dec_done"));
1597
1598&set_label("xts_dec_three",16);
1599 &movaps ($inout5,$tweak); # put aside last tweak
1600 &movups ($inout0,&QWP(16*0,$inp)); # load input
1601 &movups ($inout1,&QWP(16*1,$inp));
1602 &movups ($inout2,&QWP(16*2,$inp));
1603 &lea ($inp,&DWP(16*3,$inp));
1604 &xorps ($inout0,$inout3); # input^=tweak
1605 &xorps ($inout1,$inout4);
1606 &xorps ($inout2,$inout5);
1607
1608 &call ("_aesni_decrypt3");
1609
1610 &xorps ($inout0,$inout3); # output^=tweak
1611 &xorps ($inout1,$inout4);
1612 &xorps ($inout2,$inout5);
1613 &movups (&QWP(16*0,$out),$inout0); # write output
1614 &movups (&QWP(16*1,$out),$inout1);
1615 &movups (&QWP(16*2,$out),$inout2);
1616 &lea ($out,&DWP(16*3,$out));
1617
1618 &movdqa ($tweak,$inout5); # last tweak
1619 &jmp (&label("xts_dec_done"));
1620
1621&set_label("xts_dec_four",16);
1622 &movaps ($inout4,$tweak); # put aside last tweak
1623
1624 &movups ($inout0,&QWP(16*0,$inp)); # load input
1625 &movups ($inout1,&QWP(16*1,$inp));
1626 &movups ($inout2,&QWP(16*2,$inp));
1627 &xorps ($inout0,&QWP(16*0,"esp")); # input^=tweak
1628 &movups ($inout3,&QWP(16*3,$inp));
1629 &lea ($inp,&DWP(16*4,$inp));
1630 &xorps ($inout1,&QWP(16*1,"esp"));
1631 &xorps ($inout2,$inout5);
1632 &xorps ($inout3,$inout4);
1633
1634 &call ("_aesni_decrypt4");
1635
1636 &xorps ($inout0,&QWP(16*0,"esp")); # output^=tweak
1637 &xorps ($inout1,&QWP(16*1,"esp"));
1638 &xorps ($inout2,$inout5);
1639 &movups (&QWP(16*0,$out),$inout0); # write output
1640 &xorps ($inout3,$inout4);
1641 &movups (&QWP(16*1,$out),$inout1);
1642 &movups (&QWP(16*2,$out),$inout2);
1643 &movups (&QWP(16*3,$out),$inout3);
1644 &lea ($out,&DWP(16*4,$out));
1645
1646 &movdqa ($tweak,$inout4); # last tweak
1647 &jmp (&label("xts_dec_done"));
1648
1649&set_label("xts_dec_done6x",16); # $tweak is pre-calculated
1650 &mov ($len,&DWP(16*7+0,"esp")); # restore original $len
1651 &and ($len,15);
1652 &jz (&label("xts_dec_ret"));
1653 &mov (&DWP(16*7+0,"esp"),$len); # save $len%16
1654 &jmp (&label("xts_dec_only_one_more"));
1655
1656&set_label("xts_dec_done",16);
1657 &mov ($len,&DWP(16*7+0,"esp")); # restore original $len
1658 &pxor ($twtmp,$twtmp);
1659 &and ($len,15);
1660 &jz (&label("xts_dec_ret"));
1661
1662 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1663 &mov (&DWP(16*7+0,"esp"),$len); # save $len%16
1664 &pshufd ($twres,$twtmp,0x13);
1665 &pxor ($twtmp,$twtmp);
1666 &movdqa ($twmask,&QWP(16*6,"esp"));
1667 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1668 &pand ($twres,$twmask); # isolate carry and residue
1669 &pcmpgtd($twtmp,$tweak); # broadcast upper bits
1670 &pxor ($tweak,$twres);
1671
1672&set_label("xts_dec_only_one_more");
1673 &pshufd ($inout3,$twtmp,0x13);
1674 &movdqa ($inout4,$tweak); # put aside previous tweak
1675 &paddq ($tweak,$tweak); # &psllq($tweak,1);
1676 &pand ($inout3,$twmask); # isolate carry and residue
1677 &pxor ($inout3,$tweak);
1678
1679 &mov ($key,$key_); # restore $key
1680 &mov ($rounds,$rounds_); # restore $rounds
1681
1682 &movups ($inout0,&QWP(0,$inp)); # load input
1683 &xorps ($inout0,$inout3); # input^=tweak
1684 if ($inline)
1685 { &aesni_inline_generate1("dec"); }
1686 else
1687 { &call ("_aesni_decrypt1"); }
1688 &xorps ($inout0,$inout3); # output^=tweak
1689 &movups (&QWP(0,$out),$inout0); # write output
1690
1691&set_label("xts_dec_steal");
1692 &movz ($rounds,&BP(16,$inp));
1693 &movz ($key,&BP(0,$out));
1694 &lea ($inp,&DWP(1,$inp));
1695 &mov (&BP(0,$out),&LB($rounds));
1696 &mov (&BP(16,$out),&LB($key));
1697 &lea ($out,&DWP(1,$out));
1698 &sub ($len,1);
1699 &jnz (&label("xts_dec_steal"));
1700
1701 &sub ($out,&DWP(16*7+0,"esp")); # rewind $out
1702 &mov ($key,$key_); # restore $key
1703 &mov ($rounds,$rounds_); # restore $rounds
1704
1705 &movups ($inout0,&QWP(0,$out)); # load input
1706 &xorps ($inout0,$inout4); # input^=tweak
1707 if ($inline)
1708 { &aesni_inline_generate1("dec"); }
1709 else
1710 { &call ("_aesni_decrypt1"); }
1711 &xorps ($inout0,$inout4); # output^=tweak
1712 &movups (&QWP(0,$out),$inout0); # write output
1713
1714&set_label("xts_dec_ret");
1715 &mov ("esp",&DWP(16*7+4,"esp")); # restore %esp
1716&function_end("aesni_xts_decrypt");
1717}
1718}
1719
1720######################################################################
1721# void $PREFIX_cbc_encrypt (const void *inp, void *out,
1722# size_t length, const AES_KEY *key,
1723# unsigned char *ivp,const int enc);
1724&function_begin("${PREFIX}_cbc_encrypt");
1725 &mov ($inp,&wparam(0));
1726 &mov ($rounds_,"esp");
1727 &mov ($out,&wparam(1));
1728 &sub ($rounds_,24);
1729 &mov ($len,&wparam(2));
1730 &and ($rounds_,-16);
1731 &mov ($key,&wparam(3));
1732 &mov ($key_,&wparam(4));
1733 &test ($len,$len);
1734 &jz (&label("cbc_abort"));
1735
1736 &cmp (&wparam(5),0);
1737 &xchg ($rounds_,"esp"); # alloca
1738 &movups ($ivec,&QWP(0,$key_)); # load IV
1739 &mov ($rounds,&DWP(240,$key));
1740 &mov ($key_,$key); # backup $key
1741 &mov (&DWP(16,"esp"),$rounds_); # save original %esp
1742 &mov ($rounds_,$rounds); # backup $rounds
1743 &je (&label("cbc_decrypt"));
1744
1745 &movaps ($inout0,$ivec);
1746 &cmp ($len,16);
1747 &jb (&label("cbc_enc_tail"));
1748 &sub ($len,16);
1749 &jmp (&label("cbc_enc_loop"));
1750
1751&set_label("cbc_enc_loop",16);
1752 &movups ($ivec,&QWP(0,$inp)); # input actually
1753 &lea ($inp,&DWP(16,$inp));
1754 if ($inline)
1755 { &aesni_inline_generate1("enc",$inout0,$ivec); }
1756 else
1757 { &xorps($inout0,$ivec); &call("_aesni_encrypt1"); }
1758 &mov ($rounds,$rounds_); # restore $rounds
1759 &mov ($key,$key_); # restore $key
1760 &movups (&QWP(0,$out),$inout0); # store output
1761 &lea ($out,&DWP(16,$out));
1762 &sub ($len,16);
1763 &jnc (&label("cbc_enc_loop"));
1764 &add ($len,16);
1765 &jnz (&label("cbc_enc_tail"));
1766 &movaps ($ivec,$inout0);
1767 &jmp (&label("cbc_ret"));
1768
1769&set_label("cbc_enc_tail");
1770 &mov ("ecx",$len); # zaps $rounds
1771 &data_word(0xA4F3F689); # rep movsb
1772 &mov ("ecx",16); # zero tail
1773 &sub ("ecx",$len);
1774 &xor ("eax","eax"); # zaps $len
1775 &data_word(0xAAF3F689); # rep stosb
1776 &lea ($out,&DWP(-16,$out)); # rewind $out by 1 block
1777 &mov ($rounds,$rounds_); # restore $rounds
1778 &mov ($inp,$out); # $inp and $out are the same
1779 &mov ($key,$key_); # restore $key
1780 &jmp (&label("cbc_enc_loop"));
1781######################################################################
1782&set_label("cbc_decrypt",16);
1783 &cmp ($len,0x50);
1784 &jbe (&label("cbc_dec_tail"));
1785 &movaps (&QWP(0,"esp"),$ivec); # save IV
1786 &sub ($len,0x50);
1787 &jmp (&label("cbc_dec_loop6_enter"));
1788
1789&set_label("cbc_dec_loop6",16);
1790 &movaps (&QWP(0,"esp"),$rndkey0); # save IV
1791 &movups (&QWP(0,$out),$inout5);
1792 &lea ($out,&DWP(0x10,$out));
1793&set_label("cbc_dec_loop6_enter");
1794 &movdqu ($inout0,&QWP(0,$inp));
1795 &movdqu ($inout1,&QWP(0x10,$inp));
1796 &movdqu ($inout2,&QWP(0x20,$inp));
1797 &movdqu ($inout3,&QWP(0x30,$inp));
1798 &movdqu ($inout4,&QWP(0x40,$inp));
1799 &movdqu ($inout5,&QWP(0x50,$inp));
1800
1801 &call ("_aesni_decrypt6");
1802
1803 &movups ($rndkey1,&QWP(0,$inp));
1804 &movups ($rndkey0,&QWP(0x10,$inp));
1805 &xorps ($inout0,&QWP(0,"esp")); # ^=IV
1806 &xorps ($inout1,$rndkey1);
1807 &movups ($rndkey1,&QWP(0x20,$inp));
1808 &xorps ($inout2,$rndkey0);
1809 &movups ($rndkey0,&QWP(0x30,$inp));
1810 &xorps ($inout3,$rndkey1);
1811 &movups ($rndkey1,&QWP(0x40,$inp));
1812 &xorps ($inout4,$rndkey0);
1813 &movups ($rndkey0,&QWP(0x50,$inp)); # IV
1814 &xorps ($inout5,$rndkey1);
1815 &movups (&QWP(0,$out),$inout0);
1816 &movups (&QWP(0x10,$out),$inout1);
1817 &lea ($inp,&DWP(0x60,$inp));
1818 &movups (&QWP(0x20,$out),$inout2);
1819 &mov ($rounds,$rounds_) # restore $rounds
1820 &movups (&QWP(0x30,$out),$inout3);
1821 &mov ($key,$key_); # restore $key
1822 &movups (&QWP(0x40,$out),$inout4);
1823 &lea ($out,&DWP(0x50,$out));
1824 &sub ($len,0x60);
1825 &ja (&label("cbc_dec_loop6"));
1826
1827 &movaps ($inout0,$inout5);
1828 &movaps ($ivec,$rndkey0);
1829 &add ($len,0x50);
1830 &jle (&label("cbc_dec_tail_collected"));
1831 &movups (&QWP(0,$out),$inout0);
1832 &lea ($out,&DWP(0x10,$out));
1833&set_label("cbc_dec_tail");
1834 &movups ($inout0,&QWP(0,$inp));
1835 &movaps ($in0,$inout0);
1836 &cmp ($len,0x10);
1837 &jbe (&label("cbc_dec_one"));
1838
1839 &movups ($inout1,&QWP(0x10,$inp));
1840 &movaps ($in1,$inout1);
1841 &cmp ($len,0x20);
1842 &jbe (&label("cbc_dec_two"));
1843
1844 &movups ($inout2,&QWP(0x20,$inp));
1845 &cmp ($len,0x30);
1846 &jbe (&label("cbc_dec_three"));
1847
1848 &movups ($inout3,&QWP(0x30,$inp));
1849 &cmp ($len,0x40);
1850 &jbe (&label("cbc_dec_four"));
1851
1852 &movups ($inout4,&QWP(0x40,$inp));
1853 &movaps (&QWP(0,"esp"),$ivec); # save IV
1854 &movups ($inout0,&QWP(0,$inp));
1855 &xorps ($inout5,$inout5);
1856 &call ("_aesni_decrypt6");
1857 &movups ($rndkey1,&QWP(0,$inp));
1858 &movups ($rndkey0,&QWP(0x10,$inp));
1859 &xorps ($inout0,&QWP(0,"esp")); # ^= IV
1860 &xorps ($inout1,$rndkey1);
1861 &movups ($rndkey1,&QWP(0x20,$inp));
1862 &xorps ($inout2,$rndkey0);
1863 &movups ($rndkey0,&QWP(0x30,$inp));
1864 &xorps ($inout3,$rndkey1);
1865 &movups ($ivec,&QWP(0x40,$inp)); # IV
1866 &xorps ($inout4,$rndkey0);
1867 &movups (&QWP(0,$out),$inout0);
1868 &movups (&QWP(0x10,$out),$inout1);
1869 &movups (&QWP(0x20,$out),$inout2);
1870 &movups (&QWP(0x30,$out),$inout3);
1871 &lea ($out,&DWP(0x40,$out));
1872 &movaps ($inout0,$inout4);
1873 &sub ($len,0x50);
1874 &jmp (&label("cbc_dec_tail_collected"));
1875
1876&set_label("cbc_dec_one",16);
1877 if ($inline)
1878 { &aesni_inline_generate1("dec"); }
1879 else
1880 { &call ("_aesni_decrypt1"); }
1881 &xorps ($inout0,$ivec);
1882 &movaps ($ivec,$in0);
1883 &sub ($len,0x10);
1884 &jmp (&label("cbc_dec_tail_collected"));
1885
1886&set_label("cbc_dec_two",16);
1887 &xorps ($inout2,$inout2);
1888 &call ("_aesni_decrypt3");
1889 &xorps ($inout0,$ivec);
1890 &xorps ($inout1,$in0);
1891 &movups (&QWP(0,$out),$inout0);
1892 &movaps ($inout0,$inout1);
1893 &lea ($out,&DWP(0x10,$out));
1894 &movaps ($ivec,$in1);
1895 &sub ($len,0x20);
1896 &jmp (&label("cbc_dec_tail_collected"));
1897
1898&set_label("cbc_dec_three",16);
1899 &call ("_aesni_decrypt3");
1900 &xorps ($inout0,$ivec);
1901 &xorps ($inout1,$in0);
1902 &xorps ($inout2,$in1);
1903 &movups (&QWP(0,$out),$inout0);
1904 &movaps ($inout0,$inout2);
1905 &movups (&QWP(0x10,$out),$inout1);
1906 &lea ($out,&DWP(0x20,$out));
1907 &movups ($ivec,&QWP(0x20,$inp));
1908 &sub ($len,0x30);
1909 &jmp (&label("cbc_dec_tail_collected"));
1910
1911&set_label("cbc_dec_four",16);
1912 &call ("_aesni_decrypt4");
1913 &movups ($rndkey1,&QWP(0x10,$inp));
1914 &movups ($rndkey0,&QWP(0x20,$inp));
1915 &xorps ($inout0,$ivec);
1916 &movups ($ivec,&QWP(0x30,$inp));
1917 &xorps ($inout1,$in0);
1918 &movups (&QWP(0,$out),$inout0);
1919 &xorps ($inout2,$rndkey1);
1920 &movups (&QWP(0x10,$out),$inout1);
1921 &xorps ($inout3,$rndkey0);
1922 &movups (&QWP(0x20,$out),$inout2);
1923 &lea ($out,&DWP(0x30,$out));
1924 &movaps ($inout0,$inout3);
1925 &sub ($len,0x40);
1926
1927&set_label("cbc_dec_tail_collected");
1928 &and ($len,15);
1929 &jnz (&label("cbc_dec_tail_partial"));
1930 &movups (&QWP(0,$out),$inout0);
1931 &jmp (&label("cbc_ret"));
1932
1933&set_label("cbc_dec_tail_partial",16);
1934 &movaps (&QWP(0,"esp"),$inout0);
1935 &mov ("ecx",16);
1936 &mov ($inp,"esp");
1937 &sub ("ecx",$len);
1938 &data_word(0xA4F3F689); # rep movsb
1939
1940&set_label("cbc_ret");
1941 &mov ("esp",&DWP(16,"esp")); # pull original %esp
1942 &mov ($key_,&wparam(4));
1943 &movups (&QWP(0,$key_),$ivec); # output IV
1944&set_label("cbc_abort");
1945&function_end("${PREFIX}_cbc_encrypt");
1946
1947######################################################################
1948# Mechanical port from aesni-x86_64.pl.
1949#
1950# _aesni_set_encrypt_key is private interface,
1951# input:
1952# "eax" const unsigned char *userKey
1953# $rounds int bits
1954# $key AES_KEY *key
1955# output:
1956# "eax" return code
1957# $round rounds
1958
1959&function_begin_B("_aesni_set_encrypt_key");
1960 &test ("eax","eax");
1961 &jz (&label("bad_pointer"));
1962 &test ($key,$key);
1963 &jz (&label("bad_pointer"));
1964
1965 &movups ("xmm0",&QWP(0,"eax")); # pull first 128 bits of *userKey
1966 &xorps ("xmm4","xmm4"); # low dword of xmm4 is assumed 0
1967 &lea ($key,&DWP(16,$key));
1968 &cmp ($rounds,256);
1969 &je (&label("14rounds"));
1970 &cmp ($rounds,192);
1971 &je (&label("12rounds"));
1972 &cmp ($rounds,128);
1973 &jne (&label("bad_keybits"));
1974
1975&set_label("10rounds",16);
1976 &mov ($rounds,9);
1977 &$movekey (&QWP(-16,$key),"xmm0"); # round 0
1978 &aeskeygenassist("xmm1","xmm0",0x01); # round 1
1979 &call (&label("key_128_cold"));
1980 &aeskeygenassist("xmm1","xmm0",0x2); # round 2
1981 &call (&label("key_128"));
1982 &aeskeygenassist("xmm1","xmm0",0x04); # round 3
1983 &call (&label("key_128"));
1984 &aeskeygenassist("xmm1","xmm0",0x08); # round 4
1985 &call (&label("key_128"));
1986 &aeskeygenassist("xmm1","xmm0",0x10); # round 5
1987 &call (&label("key_128"));
1988 &aeskeygenassist("xmm1","xmm0",0x20); # round 6
1989 &call (&label("key_128"));
1990 &aeskeygenassist("xmm1","xmm0",0x40); # round 7
1991 &call (&label("key_128"));
1992 &aeskeygenassist("xmm1","xmm0",0x80); # round 8
1993 &call (&label("key_128"));
1994 &aeskeygenassist("xmm1","xmm0",0x1b); # round 9
1995 &call (&label("key_128"));
1996 &aeskeygenassist("xmm1","xmm0",0x36); # round 10
1997 &call (&label("key_128"));
1998 &$movekey (&QWP(0,$key),"xmm0");
1999 &mov (&DWP(80,$key),$rounds);
2000 &xor ("eax","eax");
2001 &ret();
2002
2003&set_label("key_128",16);
2004 &$movekey (&QWP(0,$key),"xmm0");
2005 &lea ($key,&DWP(16,$key));
2006&set_label("key_128_cold");
2007 &shufps ("xmm4","xmm0",0b00010000);
2008 &xorps ("xmm0","xmm4");
2009 &shufps ("xmm4","xmm0",0b10001100);
2010 &xorps ("xmm0","xmm4");
2011 &shufps ("xmm1","xmm1",0b11111111); # critical path
2012 &xorps ("xmm0","xmm1");
2013 &ret();
2014
2015&set_label("12rounds",16);
2016 &movq ("xmm2",&QWP(16,"eax")); # remaining 1/3 of *userKey
2017 &mov ($rounds,11);
2018 &$movekey (&QWP(-16,$key),"xmm0") # round 0
2019 &aeskeygenassist("xmm1","xmm2",0x01); # round 1,2
2020 &call (&label("key_192a_cold"));
2021 &aeskeygenassist("xmm1","xmm2",0x02); # round 2,3
2022 &call (&label("key_192b"));
2023 &aeskeygenassist("xmm1","xmm2",0x04); # round 4,5
2024 &call (&label("key_192a"));
2025 &aeskeygenassist("xmm1","xmm2",0x08); # round 5,6
2026 &call (&label("key_192b"));
2027 &aeskeygenassist("xmm1","xmm2",0x10); # round 7,8
2028 &call (&label("key_192a"));
2029 &aeskeygenassist("xmm1","xmm2",0x20); # round 8,9
2030 &call (&label("key_192b"));
2031 &aeskeygenassist("xmm1","xmm2",0x40); # round 10,11
2032 &call (&label("key_192a"));
2033 &aeskeygenassist("xmm1","xmm2",0x80); # round 11,12
2034 &call (&label("key_192b"));
2035 &$movekey (&QWP(0,$key),"xmm0");
2036 &mov (&DWP(48,$key),$rounds);
2037 &xor ("eax","eax");
2038 &ret();
2039
2040&set_label("key_192a",16);
2041 &$movekey (&QWP(0,$key),"xmm0");
2042 &lea ($key,&DWP(16,$key));
2043&set_label("key_192a_cold",16);
2044 &movaps ("xmm5","xmm2");
2045&set_label("key_192b_warm");
2046 &shufps ("xmm4","xmm0",0b00010000);
2047 &movdqa ("xmm3","xmm2");
2048 &xorps ("xmm0","xmm4");
2049 &shufps ("xmm4","xmm0",0b10001100);
2050 &pslldq ("xmm3",4);
2051 &xorps ("xmm0","xmm4");
2052 &pshufd ("xmm1","xmm1",0b01010101); # critical path
2053 &pxor ("xmm2","xmm3");
2054 &pxor ("xmm0","xmm1");
2055 &pshufd ("xmm3","xmm0",0b11111111);
2056 &pxor ("xmm2","xmm3");
2057 &ret();
2058
2059&set_label("key_192b",16);
2060 &movaps ("xmm3","xmm0");
2061 &shufps ("xmm5","xmm0",0b01000100);
2062 &$movekey (&QWP(0,$key),"xmm5");
2063 &shufps ("xmm3","xmm2",0b01001110);
2064 &$movekey (&QWP(16,$key),"xmm3");
2065 &lea ($key,&DWP(32,$key));
2066 &jmp (&label("key_192b_warm"));
2067
2068&set_label("14rounds",16);
2069 &movups ("xmm2",&QWP(16,"eax")); # remaining half of *userKey
2070 &mov ($rounds,13);
2071 &lea ($key,&DWP(16,$key));
2072 &$movekey (&QWP(-32,$key),"xmm0"); # round 0
2073 &$movekey (&QWP(-16,$key),"xmm2"); # round 1
2074 &aeskeygenassist("xmm1","xmm2",0x01); # round 2
2075 &call (&label("key_256a_cold"));
2076 &aeskeygenassist("xmm1","xmm0",0x01); # round 3
2077 &call (&label("key_256b"));
2078 &aeskeygenassist("xmm1","xmm2",0x02); # round 4
2079 &call (&label("key_256a"));
2080 &aeskeygenassist("xmm1","xmm0",0x02); # round 5
2081 &call (&label("key_256b"));
2082 &aeskeygenassist("xmm1","xmm2",0x04); # round 6
2083 &call (&label("key_256a"));
2084 &aeskeygenassist("xmm1","xmm0",0x04); # round 7
2085 &call (&label("key_256b"));
2086 &aeskeygenassist("xmm1","xmm2",0x08); # round 8
2087 &call (&label("key_256a"));
2088 &aeskeygenassist("xmm1","xmm0",0x08); # round 9
2089 &call (&label("key_256b"));
2090 &aeskeygenassist("xmm1","xmm2",0x10); # round 10
2091 &call (&label("key_256a"));
2092 &aeskeygenassist("xmm1","xmm0",0x10); # round 11
2093 &call (&label("key_256b"));
2094 &aeskeygenassist("xmm1","xmm2",0x20); # round 12
2095 &call (&label("key_256a"));
2096 &aeskeygenassist("xmm1","xmm0",0x20); # round 13
2097 &call (&label("key_256b"));
2098 &aeskeygenassist("xmm1","xmm2",0x40); # round 14
2099 &call (&label("key_256a"));
2100 &$movekey (&QWP(0,$key),"xmm0");
2101 &mov (&DWP(16,$key),$rounds);
2102 &xor ("eax","eax");
2103 &ret();
2104
2105&set_label("key_256a",16);
2106 &$movekey (&QWP(0,$key),"xmm2");
2107 &lea ($key,&DWP(16,$key));
2108&set_label("key_256a_cold");
2109 &shufps ("xmm4","xmm0",0b00010000);
2110 &xorps ("xmm0","xmm4");
2111 &shufps ("xmm4","xmm0",0b10001100);
2112 &xorps ("xmm0","xmm4");
2113 &shufps ("xmm1","xmm1",0b11111111); # critical path
2114 &xorps ("xmm0","xmm1");
2115 &ret();
2116
2117&set_label("key_256b",16);
2118 &$movekey (&QWP(0,$key),"xmm0");
2119 &lea ($key,&DWP(16,$key));
2120
2121 &shufps ("xmm4","xmm2",0b00010000);
2122 &xorps ("xmm2","xmm4");
2123 &shufps ("xmm4","xmm2",0b10001100);
2124 &xorps ("xmm2","xmm4");
2125 &shufps ("xmm1","xmm1",0b10101010); # critical path
2126 &xorps ("xmm2","xmm1");
2127 &ret();
2128
2129&set_label("bad_pointer",4);
2130 &mov ("eax",-1);
2131 &ret ();
2132&set_label("bad_keybits",4);
2133 &mov ("eax",-2);
2134 &ret ();
2135&function_end_B("_aesni_set_encrypt_key");
2136
2137# int $PREFIX_set_encrypt_key (const unsigned char *userKey, int bits,
2138# AES_KEY *key)
2139&function_begin_B("${PREFIX}_set_encrypt_key");
2140 &mov ("eax",&wparam(0));
2141 &mov ($rounds,&wparam(1));
2142 &mov ($key,&wparam(2));
2143 &call ("_aesni_set_encrypt_key");
2144 &ret ();
2145&function_end_B("${PREFIX}_set_encrypt_key");
2146
2147# int $PREFIX_set_decrypt_key (const unsigned char *userKey, int bits,
2148# AES_KEY *key)
2149&function_begin_B("${PREFIX}_set_decrypt_key");
2150 &mov ("eax",&wparam(0));
2151 &mov ($rounds,&wparam(1));
2152 &mov ($key,&wparam(2));
2153 &call ("_aesni_set_encrypt_key");
2154 &mov ($key,&wparam(2));
2155 &shl ($rounds,4) # rounds-1 after _aesni_set_encrypt_key
2156 &test ("eax","eax");
2157 &jnz (&label("dec_key_ret"));
2158 &lea ("eax",&DWP(16,$key,$rounds)); # end of key schedule
2159
2160 &$movekey ("xmm0",&QWP(0,$key)); # just swap
2161 &$movekey ("xmm1",&QWP(0,"eax"));
2162 &$movekey (&QWP(0,"eax"),"xmm0");
2163 &$movekey (&QWP(0,$key),"xmm1");
2164 &lea ($key,&DWP(16,$key));
2165 &lea ("eax",&DWP(-16,"eax"));
2166
2167&set_label("dec_key_inverse");
2168 &$movekey ("xmm0",&QWP(0,$key)); # swap and inverse
2169 &$movekey ("xmm1",&QWP(0,"eax"));
2170 &aesimc ("xmm0","xmm0");
2171 &aesimc ("xmm1","xmm1");
2172 &lea ($key,&DWP(16,$key));
2173 &lea ("eax",&DWP(-16,"eax"));
2174 &$movekey (&QWP(16,"eax"),"xmm0");
2175 &$movekey (&QWP(-16,$key),"xmm1");
2176 &cmp ("eax",$key);
2177 &ja (&label("dec_key_inverse"));
2178
2179 &$movekey ("xmm0",&QWP(0,$key)); # inverse middle
2180 &aesimc ("xmm0","xmm0");
2181 &$movekey (&QWP(0,$key),"xmm0");
2182
2183 &xor ("eax","eax"); # return success
2184&set_label("dec_key_ret");
2185 &ret ();
2186&function_end_B("${PREFIX}_set_decrypt_key");
2187&asciz("AES for Intel AES-NI, CRYPTOGAMS by <appro\@openssl.org>");
2188
2189&asm_finish();
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-01-07 10:06:48 +0000