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# Version 4.3. 11# 12# You might fail to appreciate this module performance from the first 13# try. If compared to "vanilla" linux-ia32-icc target, i.e. considered 14# to be *the* best Intel C compiler without -KPIC, performance appears 15# to be virtually identical... But try to re-configure with shared 16# library support... Aha! Intel compiler "suddenly" lags behind by 30% 17# [on P4, more on others]:-) And if compared to position-independent 18# code generated by GNU C, this code performs *more* than *twice* as 19# fast! Yes, all this buzz about PIC means that unlike other hand- 20# coded implementations, this one was explicitly designed to be safe 21# to use even in shared library context... This also means that this 22# code isn't necessarily absolutely fastest "ever," because in order 23# to achieve position independence an extra register has to be 24# off-loaded to stack, which affects the benchmark result. 25# 26# Special note about instruction choice. Do you recall RC4_INT code 27# performing poorly on P4? It might be the time to figure out why. 28# RC4_INT code implies effective address calculations in base+offset*4 29# form. Trouble is that it seems that offset scaling turned to be 30# critical path... At least eliminating scaling resulted in 2.8x RC4 31# performance improvement [as you might recall]. As AES code is hungry 32# for scaling too, I [try to] avoid the latter by favoring off-by-2 33# shifts and masking the result with 0xFF<<2 instead of "boring" 0xFF. 34# 35# As was shown by Dean Gaudet <dean@arctic.org>, the above note turned 36# void. Performance improvement with off-by-2 shifts was observed on 37# intermediate implementation, which was spilling yet another register 38# to stack... Final offset*4 code below runs just a tad faster on P4, 39# but exhibits up to 10% improvement on other cores. 40# 41# Second version is "monolithic" replacement for aes_core.c, which in 42# addition to AES_[de|en]crypt implements AES_set_[de|en]cryption_key. 43# This made it possible to implement little-endian variant of the 44# algorithm without modifying the base C code. Motivating factor for 45# the undertaken effort was that it appeared that in tight IA-32 46# register window little-endian flavor could achieve slightly higher 47# Instruction Level Parallelism, and it indeed resulted in up to 15% 48# better performance on most recent �-archs... 49# 50# Third version adds AES_cbc_encrypt implementation, which resulted in 51# up to 40% performance improvement of CBC benchmark results. 40% was 52# observed on P4 core, where "overall" improvement coefficient, i.e. if 53# compared to PIC generated by GCC and in CBC mode, was observed to be 54# as large as 4x:-) CBC performance is virtually identical to ECB now 55# and on some platforms even better, e.g. 17.6 "small" cycles/byte on 56# Opteron, because certain function prologues and epilogues are 57# effectively taken out of the loop... 58# 59# Version 3.2 implements compressed tables and prefetch of these tables 60# in CBC[!] mode. Former means that 3/4 of table references are now 61# misaligned, which unfortunately has negative impact on elder IA-32 62# implementations, Pentium suffered 30% penalty, PIII - 10%. 63# 64# Version 3.3 avoids L1 cache aliasing between stack frame and 65# S-boxes, and 3.4 - L1 cache aliasing even between key schedule. The 66# latter is achieved by copying the key schedule to controlled place in 67# stack. This unfortunately has rather strong impact on small block CBC 68# performance, ~2x deterioration on 16-byte block if compared to 3.3. 69# 70# Version 3.5 checks if there is L1 cache aliasing between user-supplied 71# key schedule and S-boxes and abstains from copying the former if 72# there is no. This allows end-user to consciously retain small block 73# performance by aligning key schedule in specific manner. 74# 75# Version 3.6 compresses Td4 to 256 bytes and prefetches it in ECB. 76# 77# Current ECB performance numbers for 128-bit key in CPU cycles per 78# processed byte [measure commonly used by AES benchmarkers] are: 79# 80# small footprint fully unrolled 81# P4 24 22 82# AMD K8 20 19 83# PIII 25 23 84# Pentium 81 78 85# 86# Version 3.7 reimplements outer rounds as "compact." Meaning that 87# first and last rounds reference compact 256 bytes S-box. This means 88# that first round consumes a lot more CPU cycles and that encrypt 89# and decrypt performance becomes asymmetric. Encrypt performance 90# drops by 10-12%, while decrypt - by 20-25%:-( 256 bytes S-box is 91# aggressively pre-fetched. 92# 93# Version 4.0 effectively rolls back to 3.6 and instead implements 94# additional set of functions, _[x86|sse]_AES_[en|de]crypt_compact, 95# which use exclusively 256 byte S-box. These functions are to be 96# called in modes not concealing plain text, such as ECB, or when 97# we're asked to process smaller amount of data [or unconditionally 98# on hyper-threading CPU]. Currently it's called unconditionally from 99# AES_[en|de]crypt, which affects all modes, but CBC. CBC routine 100# still needs to be modified to switch between slower and faster 101# mode when appropriate... But in either case benchmark landscape 102# changes dramatically and below numbers are CPU cycles per processed 103# byte for 128-bit key. 104# 105# ECB encrypt ECB decrypt CBC large chunk 106# P4 56[60] 84[100] 23 107# AMD K8 48[44] 70[79] 18 108# PIII 41[50] 61[91] 24 109# Core 2 32[38] 45[70] 18.5 110# Pentium 120 160 77 111# 112# Version 4.1 switches to compact S-box even in key schedule setup. 113# 114# Version 4.2 prefetches compact S-box in every SSE round or in other 115# words every cache-line is *guaranteed* to be accessed within ~50 116# cycles window. Why just SSE? Because it's needed on hyper-threading 117# CPU! Which is also why it's prefetched with 64 byte stride. Best 118# part is that it has no negative effect on performance:-) 119# 120# Version 4.3 implements switch between compact and non-compact block 121# functions in AES_cbc_encrypt depending on how much data was asked 122# to be processed in one stroke. 123# 124###################################################################### 125# Timing attacks are classified in two classes: synchronous when 126# attacker consciously initiates cryptographic operation and collects 127# timing data of various character afterwards, and asynchronous when 128# malicious code is executed on same CPU simultaneously with AES, 129# instruments itself and performs statistical analysis of this data. 130# 131# As far as synchronous attacks go the root to the AES timing 132# vulnerability is twofold. Firstly, of 256 S-box elements at most 160 133# are referred to in single 128-bit block operation. Well, in C 134# implementation with 4 distinct tables it's actually as little as 40 135# references per 256 elements table, but anyway... Secondly, even 136# though S-box elements are clustered into smaller amount of cache- 137# lines, smaller than 160 and even 40, it turned out that for certain 138# plain-text pattern[s] or simply put chosen plain-text and given key 139# few cache-lines remain unaccessed during block operation. Now, if 140# attacker can figure out this access pattern, he can deduct the key 141# [or at least part of it]. The natural way to mitigate this kind of 142# attacks is to minimize the amount of cache-lines in S-box and/or 143# prefetch them to ensure that every one is accessed for more uniform 144# timing. But note that *if* plain-text was concealed in such way that 145# input to block function is distributed *uniformly*, then attack 146# wouldn't apply. Now note that some encryption modes, most notably 147# CBC, do mask the plain-text in this exact way [secure cipher output 148# is distributed uniformly]. Yes, one still might find input that 149# would reveal the information about given key, but if amount of 150# candidate inputs to be tried is larger than amount of possible key 151# combinations then attack becomes infeasible. This is why revised 152# AES_cbc_encrypt "dares" to switch to larger S-box when larger chunk 153# of data is to be processed in one stroke. The current size limit of 154# 512 bytes is chosen to provide same [diminishigly low] probability 155# for cache-line to remain untouched in large chunk operation with 156# large S-box as for single block operation with compact S-box and 157# surely needs more careful consideration... 158# 159# As for asynchronous attacks. There are two flavours: attacker code 160# being interleaved with AES on hyper-threading CPU at *instruction* 161# level, and two processes time sharing single core. As for latter. 162# Two vectors. 1. Given that attacker process has higher priority, 163# yield execution to process performing AES just before timer fires 164# off the scheduler, immediately regain control of CPU and analyze the 165# cache state. For this attack to be efficient attacker would have to 166# effectively slow down the operation by several *orders* of magnitute, 167# by ratio of time slice to duration of handful of AES rounds, which 168# unlikely to remain unnoticed. Not to mention that this also means 169# that he would spend correspondigly more time to collect enough 170# statistical data to mount the attack. It's probably appropriate to 171# say that if adeversary reckons that this attack is beneficial and 172# risks to be noticed, you probably have larger problems having him 173# mere opportunity. In other words suggested code design expects you 174# to preclude/mitigate this attack by overall system security design. 175# 2. Attacker manages to make his code interrupt driven. In order for 176# this kind of attack to be feasible, interrupt rate has to be high 177# enough, again comparable to duration of handful of AES rounds. But 178# is there interrupt source of such rate? Hardly, not even 1Gbps NIC 179# generates interrupts at such raging rate... 180# 181# And now back to the former, hyper-threading CPU or more specifically 182# Intel P4. Recall that asynchronous attack implies that malicious 183# code instruments itself. And naturally instrumentation granularity 184# has be noticeably lower than duration of codepath accessing S-box. 185# Given that all cache-lines are accessed during that time that is. 186# Current implementation accesses *all* cache-lines within ~50 cycles 187# window, which is actually *less* than RDTSC latency on Intel P4! 188 189$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 190push(@INC,"${dir}","${dir}../../perlasm"); 191require "x86asm.pl"; 192 193&asm_init($ARGV[0],"aes-586.pl",$x86only = $ARGV[$#ARGV] eq "386"); 194&static_label("AES_Te"); 195&static_label("AES_Td"); 196 197$s0="eax"; 198$s1="ebx"; 199$s2="ecx"; 200$s3="edx"; 201$key="edi"; 202$acc="esi"; 203$tbl="ebp"; 204 205# stack frame layout in _[x86|sse]_AES_* routines, frame is allocated 206# by caller 207$__ra=&DWP(0,"esp"); # return address 208$__s0=&DWP(4,"esp"); # s0 backing store 209$__s1=&DWP(8,"esp"); # s1 backing store 210$__s2=&DWP(12,"esp"); # s2 backing store 211$__s3=&DWP(16,"esp"); # s3 backing store 212$__key=&DWP(20,"esp"); # pointer to key schedule 213$__end=&DWP(24,"esp"); # pointer to end of key schedule 214$__tbl=&DWP(28,"esp"); # %ebp backing store 215 216# stack frame layout in AES_[en|crypt] routines, which differs from 217# above by 4 and overlaps by %ebp backing store 218$_tbl=&DWP(24,"esp"); 219$_esp=&DWP(28,"esp"); 220 221sub _data_word() { my $i; while(defined($i=shift)) { &data_word($i,$i); } } 222 223$speed_limit=512; # chunks smaller than $speed_limit are 224 # processed with compact routine in CBC mode 225$small_footprint=1; # $small_footprint=1 code is ~5% slower [on 226 # recent �-archs], but ~5 times smaller! 227 # I favor compact code to minimize cache 228 # contention and in hope to "collect" 5% back 229 # in real-life applications... 230 231$vertical_spin=0; # shift "vertically" defaults to 0, because of 232 # its proof-of-concept status... 233# Note that there is no decvert(), as well as last encryption round is 234# performed with "horizontal" shifts. This is because this "vertical" 235# implementation [one which groups shifts on a given $s[i] to form a 236# "column," unlike "horizontal" one, which groups shifts on different 237# $s[i] to form a "row"] is work in progress. It was observed to run 238# few percents faster on Intel cores, but not AMD. On AMD K8 core it's 239# whole 12% slower:-( So we face a trade-off... Shall it be resolved 240# some day? Till then the code is considered experimental and by 241# default remains dormant... 242 243sub encvert() 244{ my ($te,@s) = @_; 245 my $v0 = $acc, $v1 = $key; 246 247 &mov ($v0,$s[3]); # copy s3 248 &mov (&DWP(4,"esp"),$s[2]); # save s2 249 &mov ($v1,$s[0]); # copy s0 250 &mov (&DWP(8,"esp"),$s[1]); # save s1 251 252 &movz ($s[2],&HB($s[0])); 253 &and ($s[0],0xFF); 254 &mov ($s[0],&DWP(0,$te,$s[0],8)); # s0>>0 255 &shr ($v1,16); 256 &mov ($s[3],&DWP(3,$te,$s[2],8)); # s0>>8 257 &movz ($s[1],&HB($v1)); 258 &and ($v1,0xFF); 259 &mov ($s[2],&DWP(2,$te,$v1,8)); # s0>>16 260 &mov ($v1,$v0); 261 &mov ($s[1],&DWP(1,$te,$s[1],8)); # s0>>24 262 263 &and ($v0,0xFF); 264 &xor ($s[3],&DWP(0,$te,$v0,8)); # s3>>0 265 &movz ($v0,&HB($v1)); 266 &shr ($v1,16); 267 &xor ($s[2],&DWP(3,$te,$v0,8)); # s3>>8 268 &movz ($v0,&HB($v1)); 269 &and ($v1,0xFF); 270 &xor ($s[1],&DWP(2,$te,$v1,8)); # s3>>16 271 &mov ($v1,&DWP(4,"esp")); # restore s2 272 &xor ($s[0],&DWP(1,$te,$v0,8)); # s3>>24 273 274 &mov ($v0,$v1); 275 &and ($v1,0xFF); 276 &xor ($s[2],&DWP(0,$te,$v1,8)); # s2>>0 277 &movz ($v1,&HB($v0)); 278 &shr ($v0,16); 279 &xor ($s[1],&DWP(3,$te,$v1,8)); # s2>>8 280 &movz ($v1,&HB($v0)); 281 &and ($v0,0xFF); 282 &xor ($s[0],&DWP(2,$te,$v0,8)); # s2>>16 283 &mov ($v0,&DWP(8,"esp")); # restore s1 284 &xor ($s[3],&DWP(1,$te,$v1,8)); # s2>>24 285 286 &mov ($v1,$v0); 287 &and ($v0,0xFF); 288 &xor ($s[1],&DWP(0,$te,$v0,8)); # s1>>0 289 &movz ($v0,&HB($v1)); 290 &shr ($v1,16); 291 &xor ($s[0],&DWP(3,$te,$v0,8)); # s1>>8 292 &movz ($v0,&HB($v1)); 293 &and ($v1,0xFF); 294 &xor ($s[3],&DWP(2,$te,$v1,8)); # s1>>16 295 &mov ($key,$__key); # reincarnate v1 as key 296 &xor ($s[2],&DWP(1,$te,$v0,8)); # s1>>24 297} 298 299# Another experimental routine, which features "horizontal spin," but 300# eliminates one reference to stack. Strangely enough runs slower... 301sub enchoriz() 302{ my $v0 = $key, $v1 = $acc; 303 304 &movz ($v0,&LB($s0)); # 3, 2, 1, 0* 305 &rotr ($s2,8); # 8,11,10, 9 306 &mov ($v1,&DWP(0,$te,$v0,8)); # 0 307 &movz ($v0,&HB($s1)); # 7, 6, 5*, 4 308 &rotr ($s3,16); # 13,12,15,14 309 &xor ($v1,&DWP(3,$te,$v0,8)); # 5 310 &movz ($v0,&HB($s2)); # 8,11,10*, 9 311 &rotr ($s0,16); # 1, 0, 3, 2 312 &xor ($v1,&DWP(2,$te,$v0,8)); # 10 313 &movz ($v0,&HB($s3)); # 13,12,15*,14 314 &xor ($v1,&DWP(1,$te,$v0,8)); # 15, t[0] collected 315 &mov ($__s0,$v1); # t[0] saved 316 317 &movz ($v0,&LB($s1)); # 7, 6, 5, 4* 318 &shr ($s1,16); # -, -, 7, 6 319 &mov ($v1,&DWP(0,$te,$v0,8)); # 4 320 &movz ($v0,&LB($s3)); # 13,12,15,14* 321 &xor ($v1,&DWP(2,$te,$v0,8)); # 14 322 &movz ($v0,&HB($s0)); # 1, 0, 3*, 2 323 &and ($s3,0xffff0000); # 13,12, -, - 324 &xor ($v1,&DWP(1,$te,$v0,8)); # 3 325 &movz ($v0,&LB($s2)); # 8,11,10, 9* 326 &or ($s3,$s1); # 13,12, 7, 6 327 &xor ($v1,&DWP(3,$te,$v0,8)); # 9, t[1] collected 328 &mov ($s1,$v1); # s[1]=t[1] 329 330 &movz ($v0,&LB($s0)); # 1, 0, 3, 2* 331 &shr ($s2,16); # -, -, 8,11 332 &mov ($v1,&DWP(2,$te,$v0,8)); # 2 333 &movz ($v0,&HB($s3)); # 13,12, 7*, 6 334 &xor ($v1,&DWP(1,$te,$v0,8)); # 7 335 &movz ($v0,&HB($s2)); # -, -, 8*,11 336 &xor ($v1,&DWP(0,$te,$v0,8)); # 8 337 &mov ($v0,$s3); 338 &shr ($v0,24); # 13 339 &xor ($v1,&DWP(3,$te,$v0,8)); # 13, t[2] collected 340 341 &movz ($v0,&LB($s2)); # -, -, 8,11* 342 &shr ($s0,24); # 1* 343 &mov ($s2,&DWP(1,$te,$v0,8)); # 11 344 &xor ($s2,&DWP(3,$te,$s0,8)); # 1 345 &mov ($s0,$__s0); # s[0]=t[0] 346 &movz ($v0,&LB($s3)); # 13,12, 7, 6* 347 &shr ($s3,16); # , ,13,12 348 &xor ($s2,&DWP(2,$te,$v0,8)); # 6 349 &mov ($key,$__key); # reincarnate v0 as key 350 &and ($s3,0xff); # , ,13,12* 351 &mov ($s3,&DWP(0,$te,$s3,8)); # 12 352 &xor ($s3,$s2); # s[2]=t[3] collected 353 &mov ($s2,$v1); # s[2]=t[2] 354} 355 356# More experimental code... SSE one... Even though this one eliminates 357# *all* references to stack, it's not faster... 358sub sse_encbody() 359{ 360 &movz ($acc,&LB("eax")); # 0 361 &mov ("ecx",&DWP(0,$tbl,$acc,8)); # 0 362 &pshufw ("mm2","mm0",0x0d); # 7, 6, 3, 2 363 &movz ("edx",&HB("eax")); # 1 364 &mov ("edx",&DWP(3,$tbl,"edx",8)); # 1 365 &shr ("eax",16); # 5, 4 366 367 &movz ($acc,&LB("ebx")); # 10 368 &xor ("ecx",&DWP(2,$tbl,$acc,8)); # 10 369 &pshufw ("mm6","mm4",0x08); # 13,12, 9, 8 370 &movz ($acc,&HB("ebx")); # 11 371 &xor ("edx",&DWP(1,$tbl,$acc,8)); # 11 372 &shr ("ebx",16); # 15,14 373 374 &movz ($acc,&HB("eax")); # 5 375 &xor ("ecx",&DWP(3,$tbl,$acc,8)); # 5 376 &movq ("mm3",QWP(16,$key)); 377 &movz ($acc,&HB("ebx")); # 15 378 &xor ("ecx",&DWP(1,$tbl,$acc,8)); # 15 379 &movd ("mm0","ecx"); # t[0] collected 380 381 &movz ($acc,&LB("eax")); # 4 382 &mov ("ecx",&DWP(0,$tbl,$acc,8)); # 4 383 &movd ("eax","mm2"); # 7, 6, 3, 2 384 &movz ($acc,&LB("ebx")); # 14 385 &xor ("ecx",&DWP(2,$tbl,$acc,8)); # 14 386 &movd ("ebx","mm6"); # 13,12, 9, 8 387 388 &movz ($acc,&HB("eax")); # 3 389 &xor ("ecx",&DWP(1,$tbl,$acc,8)); # 3 390 &movz ($acc,&HB("ebx")); # 9 391 &xor ("ecx",&DWP(3,$tbl,$acc,8)); # 9 392 &movd ("mm1","ecx"); # t[1] collected 393 394 &movz ($acc,&LB("eax")); # 2 395 &mov ("ecx",&DWP(2,$tbl,$acc,8)); # 2 396 &shr ("eax",16); # 7, 6 397 &punpckldq ("mm0","mm1"); # t[0,1] collected 398 &movz ($acc,&LB("ebx")); # 8 399 &xor ("ecx",&DWP(0,$tbl,$acc,8)); # 8 400 &shr ("ebx",16); # 13,12 401 402 &movz ($acc,&HB("eax")); # 7 403 &xor ("ecx",&DWP(1,$tbl,$acc,8)); # 7 404 &pxor ("mm0","mm3"); 405 &movz ("eax",&LB("eax")); # 6 406 &xor ("edx",&DWP(2,$tbl,"eax",8)); # 6 407 &pshufw ("mm1","mm0",0x08); # 5, 4, 1, 0 408 &movz ($acc,&HB("ebx")); # 13 409 &xor ("ecx",&DWP(3,$tbl,$acc,8)); # 13 410 &xor ("ecx",&DWP(24,$key)); # t[2] 411 &movd ("mm4","ecx"); # t[2] collected 412 &movz ("ebx",&LB("ebx")); # 12 413 &xor ("edx",&DWP(0,$tbl,"ebx",8)); # 12 414 &shr ("ecx",16); 415 &movd ("eax","mm1"); # 5, 4, 1, 0 416 &mov ("ebx",&DWP(28,$key)); # t[3] 417 &xor ("ebx","edx"); 418 &movd ("mm5","ebx"); # t[3] collected 419 &and ("ebx",0xffff0000); 420 &or ("ebx","ecx"); 421 422 &punpckldq ("mm4","mm5"); # t[2,3] collected 423} 424 425###################################################################### 426# "Compact" block function 427###################################################################### 428 429sub enccompact() 430{ my $Fn = mov; 431 while ($#_>5) { pop(@_); $Fn=sub{}; } 432 my ($i,$te,@s)=@_; 433 my $tmp = $key; 434 my $out = $i==3?$s[0]:$acc; 435 436 # $Fn is used in first compact round and its purpose is to 437 # void restoration of some values from stack, so that after 438 # 4xenccompact with extra argument $key value is left there... 439 if ($i==3) { &$Fn ($key,$__key); }##%edx 440 else { &mov ($out,$s[0]); } 441 &and ($out,0xFF); 442 if ($i==1) { &shr ($s[0],16); }#%ebx[1] 443 if ($i==2) { &shr ($s[0],24); }#%ecx[2] 444 &movz ($out,&BP(-128,$te,$out,1)); 445 446 if ($i==3) { $tmp=$s[1]; }##%eax 447 &movz ($tmp,&HB($s[1])); 448 &movz ($tmp,&BP(-128,$te,$tmp,1)); 449 &shl ($tmp,8); 450 &xor ($out,$tmp); 451 452 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$__s0); }##%ebx 453 else { &mov ($tmp,$s[2]); 454 &shr ($tmp,16); } 455 if ($i==2) { &and ($s[1],0xFF); }#%edx[2] 456 &and ($tmp,0xFF); 457 &movz ($tmp,&BP(-128,$te,$tmp,1)); 458 &shl ($tmp,16); 459 &xor ($out,$tmp); 460 461 if ($i==3) { $tmp=$s[3]; &mov ($s[2],$__s1); }##%ecx 462 elsif($i==2){ &movz ($tmp,&HB($s[3])); }#%ebx[2] 463 else { &mov ($tmp,$s[3]); 464 &shr ($tmp,24); } 465 &movz ($tmp,&BP(-128,$te,$tmp,1)); 466 &shl ($tmp,24); 467 &xor ($out,$tmp); 468 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 469 if ($i==3) { &mov ($s[3],$acc); } 470 &comment(); 471} 472 473sub enctransform() 474{ my @s = ($s0,$s1,$s2,$s3); 475 my $i = shift; 476 my $tmp = $tbl; 477 my $r2 = $key ; 478 479 &mov ($acc,$s[$i]); 480 &and ($acc,0x80808080); 481 &mov ($tmp,$acc); 482 &shr ($tmp,7); 483 &lea ($r2,&DWP(0,$s[$i],$s[$i])); 484 &sub ($acc,$tmp); 485 &and ($r2,0xfefefefe); 486 &and ($acc,0x1b1b1b1b); 487 &mov ($tmp,$s[$i]); 488 &xor ($acc,$r2); # r2 489 490 &xor ($s[$i],$acc); # r0 ^ r2 491 &rotl ($s[$i],24); 492 &xor ($s[$i],$acc) # ROTATE(r2^r0,24) ^ r2 493 &rotr ($tmp,16); 494 &xor ($s[$i],$tmp); 495 &rotr ($tmp,8); 496 &xor ($s[$i],$tmp); 497} 498 499&function_begin_B("_x86_AES_encrypt_compact"); 500 # note that caller is expected to allocate stack frame for me! 501 &mov ($__key,$key); # save key 502 503 &xor ($s0,&DWP(0,$key)); # xor with key 504 &xor ($s1,&DWP(4,$key)); 505 &xor ($s2,&DWP(8,$key)); 506 &xor ($s3,&DWP(12,$key)); 507 508 &mov ($acc,&DWP(240,$key)); # load key->rounds 509 &lea ($acc,&DWP(-2,$acc,$acc)); 510 &lea ($acc,&DWP(0,$key,$acc,8)); 511 &mov ($__end,$acc); # end of key schedule 512 513 # prefetch Te4 514 &mov ($key,&DWP(0-128,$tbl)); 515 &mov ($acc,&DWP(32-128,$tbl)); 516 &mov ($key,&DWP(64-128,$tbl)); 517 &mov ($acc,&DWP(96-128,$tbl)); 518 &mov ($key,&DWP(128-128,$tbl)); 519 &mov ($acc,&DWP(160-128,$tbl)); 520 &mov ($key,&DWP(192-128,$tbl)); 521 &mov ($acc,&DWP(224-128,$tbl)); 522 523 &set_label("loop",16); 524 525 &enccompact(0,$tbl,$s0,$s1,$s2,$s3,1); 526 &enccompact(1,$tbl,$s1,$s2,$s3,$s0,1); 527 &enccompact(2,$tbl,$s2,$s3,$s0,$s1,1); 528 &enccompact(3,$tbl,$s3,$s0,$s1,$s2,1); 529 &enctransform(2); 530 &enctransform(3); 531 &enctransform(0); 532 &enctransform(1); 533 &mov ($key,$__key); 534 &mov ($tbl,$__tbl); 535 &add ($key,16); # advance rd_key 536 &xor ($s0,&DWP(0,$key)); 537 &xor ($s1,&DWP(4,$key)); 538 &xor ($s2,&DWP(8,$key)); 539 &xor ($s3,&DWP(12,$key)); 540 541 &cmp ($key,$__end); 542 &mov ($__key,$key); 543 &jb (&label("loop")); 544 545 &enccompact(0,$tbl,$s0,$s1,$s2,$s3); 546 &enccompact(1,$tbl,$s1,$s2,$s3,$s0); 547 &enccompact(2,$tbl,$s2,$s3,$s0,$s1); 548 &enccompact(3,$tbl,$s3,$s0,$s1,$s2); 549 550 &xor ($s0,&DWP(16,$key)); 551 &xor ($s1,&DWP(20,$key)); 552 &xor ($s2,&DWP(24,$key)); 553 &xor ($s3,&DWP(28,$key)); 554 555 &ret (); 556&function_end_B("_x86_AES_encrypt_compact"); 557 558###################################################################### 559# "Compact" SSE block function. 560###################################################################### 561# 562# Performance is not actually extraordinary in comparison to pure 563# x86 code. In particular encrypt performance is virtually the same. 564# Decrypt performance on the other hand is 15-20% better on newer 565# �-archs [but we're thankful for *any* improvement here], and ~50% 566# better on PIII:-) And additionally on the pros side this code 567# eliminates redundant references to stack and thus relieves/ 568# minimizes the pressure on the memory bus. 569# 570# MMX register layout lsb 571# +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 572# | mm4 | mm0 | 573# +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 574# | s3 | s2 | s1 | s0 | 575# +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 576# |15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0| 577# +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ 578# 579# Indexes translate as s[N/4]>>(8*(N%4)), e.g. 5 means s1>>8. 580# In this terms encryption and decryption "compact" permutation 581# matrices can be depicted as following: 582# 583# encryption lsb # decryption lsb 584# +----++----+----+----+----+ # +----++----+----+----+----+ 585# | t0 || 15 | 10 | 5 | 0 | # | t0 || 7 | 10 | 13 | 0 | 586# +----++----+----+----+----+ # +----++----+----+----+----+ 587# | t1 || 3 | 14 | 9 | 4 | # | t1 || 11 | 14 | 1 | 4 | 588# +----++----+----+----+----+ # +----++----+----+----+----+ 589# | t2 || 7 | 2 | 13 | 8 | # | t2 || 15 | 2 | 5 | 8 | 590# +----++----+----+----+----+ # +----++----+----+----+----+ 591# | t3 || 11 | 6 | 1 | 12 | # | t3 || 3 | 6 | 9 | 12 | 592# +----++----+----+----+----+ # +----++----+----+----+----+ 593# 594###################################################################### 595# Why not xmm registers? Short answer. It was actually tested and 596# was not any faster, but *contrary*, most notably on Intel CPUs. 597# Longer answer. Main advantage of using mm registers is that movd 598# latency is lower, especially on Intel P4. While arithmetic 599# instructions are twice as many, they can be scheduled every cycle 600# and not every second one when they are operating on xmm register, 601# so that "arithmetic throughput" remains virtually the same. And 602# finally the code can be executed even on elder SSE-only CPUs:-) 603 604sub sse_enccompact() 605{ 606 &pshufw ("mm1","mm0",0x08); # 5, 4, 1, 0 607 &pshufw ("mm5","mm4",0x0d); # 15,14,11,10 608 &movd ("eax","mm1"); # 5, 4, 1, 0 609 &movd ("ebx","mm5"); # 15,14,11,10 610 611 &movz ($acc,&LB("eax")); # 0 612 &movz ("ecx",&BP(-128,$tbl,$acc,1)); # 0 613 &pshufw ("mm2","mm0",0x0d); # 7, 6, 3, 2 614 &movz ("edx",&HB("eax")); # 1 615 &movz ("edx",&BP(-128,$tbl,"edx",1)); # 1 616 &shl ("edx",8); # 1 617 &shr ("eax",16); # 5, 4 618 619 &movz ($acc,&LB("ebx")); # 10 620 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 10 621 &shl ($acc,16); # 10 622 &or ("ecx",$acc); # 10 623 &pshufw ("mm6","mm4",0x08); # 13,12, 9, 8 624 &movz ($acc,&HB("ebx")); # 11 625 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 11 626 &shl ($acc,24); # 11 627 &or ("edx",$acc); # 11 628 &shr ("ebx",16); # 15,14 629 630 &movz ($acc,&HB("eax")); # 5 631 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 5 632 &shl ($acc,8); # 5 633 &or ("ecx",$acc); # 5 634 &movz ($acc,&HB("ebx")); # 15 635 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 15 636 &shl ($acc,24); # 15 637 &or ("ecx",$acc); # 15 638 &movd ("mm0","ecx"); # t[0] collected 639 640 &movz ($acc,&LB("eax")); # 4 641 &movz ("ecx",&BP(-128,$tbl,$acc,1)); # 4 642 &movd ("eax","mm2"); # 7, 6, 3, 2 643 &movz ($acc,&LB("ebx")); # 14 644 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 14 645 &shl ($acc,16); # 14 646 &or ("ecx",$acc); # 14 647 648 &movd ("ebx","mm6"); # 13,12, 9, 8 649 &movz ($acc,&HB("eax")); # 3 650 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 3 651 &shl ($acc,24); # 3 652 &or ("ecx",$acc); # 3 653 &movz ($acc,&HB("ebx")); # 9 654 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 9 655 &shl ($acc,8); # 9 656 &or ("ecx",$acc); # 9 657 &movd ("mm1","ecx"); # t[1] collected 658 659 &movz ($acc,&LB("ebx")); # 8 660 &movz ("ecx",&BP(-128,$tbl,$acc,1)); # 8 661 &shr ("ebx",16); # 13,12 662 &movz ($acc,&LB("eax")); # 2 663 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 2 664 &shl ($acc,16); # 2 665 &or ("ecx",$acc); # 2 666 &shr ("eax",16); # 7, 6 667 668 &punpckldq ("mm0","mm1"); # t[0,1] collected 669 670 &movz ($acc,&HB("eax")); # 7 671 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 7 672 &shl ($acc,24); # 7 673 &or ("ecx",$acc); # 7 674 &and ("eax",0xff); # 6 675 &movz ("eax",&BP(-128,$tbl,"eax",1)); # 6 676 &shl ("eax",16); # 6 677 &or ("edx","eax"); # 6 678 &movz ($acc,&HB("ebx")); # 13 679 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 13 680 &shl ($acc,8); # 13 681 &or ("ecx",$acc); # 13 682 &movd ("mm4","ecx"); # t[2] collected 683 &and ("ebx",0xff); # 12 684 &movz ("ebx",&BP(-128,$tbl,"ebx",1)); # 12 685 &or ("edx","ebx"); # 12 686 &movd ("mm5","edx"); # t[3] collected 687 688 &punpckldq ("mm4","mm5"); # t[2,3] collected 689} 690 691 if (!$x86only) { 692&function_begin_B("_sse_AES_encrypt_compact"); 693 &pxor ("mm0",&QWP(0,$key)); # 7, 6, 5, 4, 3, 2, 1, 0 694 &pxor ("mm4",&QWP(8,$key)); # 15,14,13,12,11,10, 9, 8 695 696 # note that caller is expected to allocate stack frame for me! 697 &mov ($acc,&DWP(240,$key)); # load key->rounds 698 &lea ($acc,&DWP(-2,$acc,$acc)); 699 &lea ($acc,&DWP(0,$key,$acc,8)); 700 &mov ($__end,$acc); # end of key schedule 701 702 &mov ($s0,0x1b1b1b1b); # magic constant 703 &mov (&DWP(8,"esp"),$s0); 704 &mov (&DWP(12,"esp"),$s0); 705 706 # prefetch Te4 707 &mov ($s0,&DWP(0-128,$tbl)); 708 &mov ($s1,&DWP(32-128,$tbl)); 709 &mov ($s2,&DWP(64-128,$tbl)); 710 &mov ($s3,&DWP(96-128,$tbl)); 711 &mov ($s0,&DWP(128-128,$tbl)); 712 &mov ($s1,&DWP(160-128,$tbl)); 713 &mov ($s2,&DWP(192-128,$tbl)); 714 &mov ($s3,&DWP(224-128,$tbl)); 715 716 &set_label("loop",16); 717 &sse_enccompact(); 718 &add ($key,16); 719 &cmp ($key,$__end); 720 &ja (&label("out")); 721 722 &movq ("mm2",&QWP(8,"esp")); 723 &pxor ("mm3","mm3"); &pxor ("mm7","mm7"); 724 &movq ("mm1","mm0"); &movq ("mm5","mm4"); # r0 725 &pcmpgtb("mm3","mm0"); &pcmpgtb("mm7","mm4"); 726 &pand ("mm3","mm2"); &pand ("mm7","mm2"); 727 &pshufw ("mm2","mm0",0xb1); &pshufw ("mm6","mm4",0xb1);# ROTATE(r0,16) 728 &paddb ("mm0","mm0"); &paddb ("mm4","mm4"); 729 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # = r2 730 &pshufw ("mm3","mm2",0xb1); &pshufw ("mm7","mm6",0xb1);# r0 731 &pxor ("mm1","mm0"); &pxor ("mm5","mm4"); # r0^r2 732 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= ROTATE(r0,16) 733 734 &movq ("mm2","mm3"); &movq ("mm6","mm7"); 735 &pslld ("mm3",8); &pslld ("mm7",8); 736 &psrld ("mm2",24); &psrld ("mm6",24); 737 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= r0<<8 738 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= r0>>24 739 740 &movq ("mm3","mm1"); &movq ("mm7","mm5"); 741 &movq ("mm2",&QWP(0,$key)); &movq ("mm6",&QWP(8,$key)); 742 &psrld ("mm1",8); &psrld ("mm5",8); 743 &mov ($s0,&DWP(0-128,$tbl)); 744 &pslld ("mm3",24); &pslld ("mm7",24); 745 &mov ($s1,&DWP(64-128,$tbl)); 746 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= (r2^r0)<<8 747 &mov ($s2,&DWP(128-128,$tbl)); 748 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= (r2^r0)>>24 749 &mov ($s3,&DWP(192-128,$tbl)); 750 751 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); 752 &jmp (&label("loop")); 753 754 &set_label("out",16); 755 &pxor ("mm0",&QWP(0,$key)); 756 &pxor ("mm4",&QWP(8,$key)); 757 758 &ret (); 759&function_end_B("_sse_AES_encrypt_compact"); 760 } 761 762###################################################################### 763# Vanilla block function. 764###################################################################### 765 766sub encstep() 767{ my ($i,$te,@s) = @_; 768 my $tmp = $key; 769 my $out = $i==3?$s[0]:$acc; 770 771 # lines marked with #%e?x[i] denote "reordered" instructions... 772 if ($i==3) { &mov ($key,$__key); }##%edx 773 else { &mov ($out,$s[0]); 774 &and ($out,0xFF); } 775 if ($i==1) { &shr ($s[0],16); }#%ebx[1] 776 if ($i==2) { &shr ($s[0],24); }#%ecx[2] 777 &mov ($out,&DWP(0,$te,$out,8)); 778 779 if ($i==3) { $tmp=$s[1]; }##%eax 780 &movz ($tmp,&HB($s[1])); 781 &xor ($out,&DWP(3,$te,$tmp,8)); 782 783 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$__s0); }##%ebx 784 else { &mov ($tmp,$s[2]); 785 &shr ($tmp,16); } 786 if ($i==2) { &and ($s[1],0xFF); }#%edx[2] 787 &and ($tmp,0xFF); 788 &xor ($out,&DWP(2,$te,$tmp,8)); 789 790 if ($i==3) { $tmp=$s[3]; &mov ($s[2],$__s1); }##%ecx 791 elsif($i==2){ &movz ($tmp,&HB($s[3])); }#%ebx[2] 792 else { &mov ($tmp,$s[3]); 793 &shr ($tmp,24) } 794 &xor ($out,&DWP(1,$te,$tmp,8)); 795 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 796 if ($i==3) { &mov ($s[3],$acc); } 797 &comment(); 798} 799 800sub enclast() 801{ my ($i,$te,@s)=@_; 802 my $tmp = $key; 803 my $out = $i==3?$s[0]:$acc; 804 805 if ($i==3) { &mov ($key,$__key); }##%edx 806 else { &mov ($out,$s[0]); } 807 &and ($out,0xFF); 808 if ($i==1) { &shr ($s[0],16); }#%ebx[1] 809 if ($i==2) { &shr ($s[0],24); }#%ecx[2] 810 &mov ($out,&DWP(2,$te,$out,8)); 811 &and ($out,0x000000ff); 812 813 if ($i==3) { $tmp=$s[1]; }##%eax 814 &movz ($tmp,&HB($s[1])); 815 &mov ($tmp,&DWP(0,$te,$tmp,8)); 816 &and ($tmp,0x0000ff00); 817 &xor ($out,$tmp); 818 819 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$__s0); }##%ebx 820 else { &mov ($tmp,$s[2]); 821 &shr ($tmp,16); } 822 if ($i==2) { &and ($s[1],0xFF); }#%edx[2] 823 &and ($tmp,0xFF); 824 &mov ($tmp,&DWP(0,$te,$tmp,8)); 825 &and ($tmp,0x00ff0000); 826 &xor ($out,$tmp); 827 828 if ($i==3) { $tmp=$s[3]; &mov ($s[2],$__s1); }##%ecx 829 elsif($i==2){ &movz ($tmp,&HB($s[3])); }#%ebx[2] 830 else { &mov ($tmp,$s[3]); 831 &shr ($tmp,24); } 832 &mov ($tmp,&DWP(2,$te,$tmp,8)); 833 &and ($tmp,0xff000000); 834 &xor ($out,$tmp); 835 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 836 if ($i==3) { &mov ($s[3],$acc); } 837} 838 839&function_begin_B("_x86_AES_encrypt"); 840 if ($vertical_spin) { 841 # I need high parts of volatile registers to be accessible... 842 &exch ($s1="edi",$key="ebx"); 843 &mov ($s2="esi",$acc="ecx"); 844 } 845 846 # note that caller is expected to allocate stack frame for me! 847 &mov ($__key,$key); # save key 848 849 &xor ($s0,&DWP(0,$key)); # xor with key 850 &xor ($s1,&DWP(4,$key)); 851 &xor ($s2,&DWP(8,$key)); 852 &xor ($s3,&DWP(12,$key)); 853 854 &mov ($acc,&DWP(240,$key)); # load key->rounds 855 856 if ($small_footprint) { 857 &lea ($acc,&DWP(-2,$acc,$acc)); 858 &lea ($acc,&DWP(0,$key,$acc,8)); 859 &mov ($__end,$acc); # end of key schedule 860 861 &set_label("loop",16); 862 if ($vertical_spin) { 863 &encvert($tbl,$s0,$s1,$s2,$s3); 864 } else { 865 &encstep(0,$tbl,$s0,$s1,$s2,$s3); 866 &encstep(1,$tbl,$s1,$s2,$s3,$s0); 867 &encstep(2,$tbl,$s2,$s3,$s0,$s1); 868 &encstep(3,$tbl,$s3,$s0,$s1,$s2); 869 } 870 &add ($key,16); # advance rd_key 871 &xor ($s0,&DWP(0,$key)); 872 &xor ($s1,&DWP(4,$key)); 873 &xor ($s2,&DWP(8,$key)); 874 &xor ($s3,&DWP(12,$key)); 875 &cmp ($key,$__end); 876 &mov ($__key,$key); 877 &jb (&label("loop")); 878 } 879 else { 880 &cmp ($acc,10); 881 &jle (&label("10rounds")); 882 &cmp ($acc,12); 883 &jle (&label("12rounds")); 884 885 &set_label("14rounds",4); 886 for ($i=1;$i<3;$i++) { 887 if ($vertical_spin) { 888 &encvert($tbl,$s0,$s1,$s2,$s3); 889 } else { 890 &encstep(0,$tbl,$s0,$s1,$s2,$s3); 891 &encstep(1,$tbl,$s1,$s2,$s3,$s0); 892 &encstep(2,$tbl,$s2,$s3,$s0,$s1); 893 &encstep(3,$tbl,$s3,$s0,$s1,$s2); 894 } 895 &xor ($s0,&DWP(16*$i+0,$key)); 896 &xor ($s1,&DWP(16*$i+4,$key)); 897 &xor ($s2,&DWP(16*$i+8,$key)); 898 &xor ($s3,&DWP(16*$i+12,$key)); 899 } 900 &add ($key,32); 901 &mov ($__key,$key); # advance rd_key 902 &set_label("12rounds",4); 903 for ($i=1;$i<3;$i++) { 904 if ($vertical_spin) { 905 &encvert($tbl,$s0,$s1,$s2,$s3); 906 } else { 907 &encstep(0,$tbl,$s0,$s1,$s2,$s3); 908 &encstep(1,$tbl,$s1,$s2,$s3,$s0); 909 &encstep(2,$tbl,$s2,$s3,$s0,$s1); 910 &encstep(3,$tbl,$s3,$s0,$s1,$s2); 911 } 912 &xor ($s0,&DWP(16*$i+0,$key)); 913 &xor ($s1,&DWP(16*$i+4,$key)); 914 &xor ($s2,&DWP(16*$i+8,$key)); 915 &xor ($s3,&DWP(16*$i+12,$key)); 916 } 917 &add ($key,32); 918 &mov ($__key,$key); # advance rd_key 919 &set_label("10rounds",4); 920 for ($i=1;$i<10;$i++) { 921 if ($vertical_spin) { 922 &encvert($tbl,$s0,$s1,$s2,$s3); 923 } else { 924 &encstep(0,$tbl,$s0,$s1,$s2,$s3); 925 &encstep(1,$tbl,$s1,$s2,$s3,$s0); 926 &encstep(2,$tbl,$s2,$s3,$s0,$s1); 927 &encstep(3,$tbl,$s3,$s0,$s1,$s2); 928 } 929 &xor ($s0,&DWP(16*$i+0,$key)); 930 &xor ($s1,&DWP(16*$i+4,$key)); 931 &xor ($s2,&DWP(16*$i+8,$key)); 932 &xor ($s3,&DWP(16*$i+12,$key)); 933 } 934 } 935 936 if ($vertical_spin) { 937 # "reincarnate" some registers for "horizontal" spin... 938 &mov ($s1="ebx",$key="edi"); 939 &mov ($s2="ecx",$acc="esi"); 940 } 941 &enclast(0,$tbl,$s0,$s1,$s2,$s3); 942 &enclast(1,$tbl,$s1,$s2,$s3,$s0); 943 &enclast(2,$tbl,$s2,$s3,$s0,$s1); 944 &enclast(3,$tbl,$s3,$s0,$s1,$s2); 945 946 &add ($key,$small_footprint?16:160); 947 &xor ($s0,&DWP(0,$key)); 948 &xor ($s1,&DWP(4,$key)); 949 &xor ($s2,&DWP(8,$key)); 950 &xor ($s3,&DWP(12,$key)); 951 952 &ret (); 953&function_end_B("_x86_AES_encrypt"); 954 955 &rodataseg(); 956&set_label("AES_Te",64); 957 &_data_word(0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6); 958 &_data_word(0x0df2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591); 959 &_data_word(0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56); 960 &_data_word(0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec); 961 &_data_word(0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa); 962 &_data_word(0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb); 963 &_data_word(0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45); 964 &_data_word(0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b); 965 &_data_word(0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c); 966 &_data_word(0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83); 967 &_data_word(0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x08f1f1f9); 968 &_data_word(0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a); 969 &_data_word(0x0c040408, 0x52c7c795, 0x65232346, 0x5ec3c39d); 970 &_data_word(0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f); 971 &_data_word(0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df); 972 &_data_word(0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea); 973 &_data_word(0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34); 974 &_data_word(0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b); 975 &_data_word(0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d); 976 &_data_word(0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413); 977 &_data_word(0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1); 978 &_data_word(0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6); 979 &_data_word(0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972); 980 &_data_word(0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85); 981 &_data_word(0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed); 982 &_data_word(0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511); 983 &_data_word(0xcf45458a, 0x10f9f9e9, 0x06020204, 0x817f7ffe); 984 &_data_word(0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b); 985 &_data_word(0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05); 986 &_data_word(0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1); 987 &_data_word(0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142); 988 &_data_word(0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf); 989 &_data_word(0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3); 990 &_data_word(0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e); 991 &_data_word(0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a); 992 &_data_word(0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6); 993 &_data_word(0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3); 994 &_data_word(0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b); 995 &_data_word(0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428); 996 &_data_word(0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad); 997 &_data_word(0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14); 998 &_data_word(0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8); 999 &_data_word(0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4); 1000 &_data_word(0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2); 1001 &_data_word(0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda); 1002 &_data_word(0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949); 1003 &_data_word(0xb46c6cd8, 0xfa5656ac, 0x07f4f4f3, 0x25eaeacf); 1004 &_data_word(0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810); 1005 &_data_word(0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c); 1006 &_data_word(0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697); 1007 &_data_word(0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e); 1008 &_data_word(0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f); 1009 &_data_word(0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc); 1010 &_data_word(0xd8484890, 0x05030306, 0x01f6f6f7, 0x120e0e1c); 1011 &_data_word(0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969); 1012 &_data_word(0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27); 1013 &_data_word(0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122); 1014 &_data_word(0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433); 1015 &_data_word(0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9); 1016 &_data_word(0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5); 1017 &_data_word(0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a); 1018 &_data_word(0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0); 1019 &_data_word(0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e); 1020 &_data_word(0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c); 1021 1022#Te4 # four copies of Te4 to choose from to avoid L1 aliasing 1023 &data_byte(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5); 1024 &data_byte(0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76); 1025 &data_byte(0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0); 1026 &data_byte(0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0); 1027 &data_byte(0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc); 1028 &data_byte(0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15); 1029 &data_byte(0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a); 1030 &data_byte(0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75); 1031 &data_byte(0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0); 1032 &data_byte(0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84); 1033 &data_byte(0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b); 1034 &data_byte(0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf); 1035 &data_byte(0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85); 1036 &data_byte(0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8); 1037 &data_byte(0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5); 1038 &data_byte(0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2); 1039 &data_byte(0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17); 1040 &data_byte(0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73); 1041 &data_byte(0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88); 1042 &data_byte(0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb); 1043 &data_byte(0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c); 1044 &data_byte(0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79); 1045 &data_byte(0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9); 1046 &data_byte(0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08); 1047 &data_byte(0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6); 1048 &data_byte(0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a); 1049 &data_byte(0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e); 1050 &data_byte(0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e); 1051 &data_byte(0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94); 1052 &data_byte(0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf); 1053 &data_byte(0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68); 1054 &data_byte(0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); 1055 1056 &data_byte(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5); 1057 &data_byte(0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76); 1058 &data_byte(0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0); 1059 &data_byte(0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0); 1060 &data_byte(0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc); 1061 &data_byte(0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15); 1062 &data_byte(0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a); 1063 &data_byte(0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75); 1064 &data_byte(0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0); 1065 &data_byte(0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84); 1066 &data_byte(0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b); 1067 &data_byte(0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf); 1068 &data_byte(0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85); 1069 &data_byte(0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8); 1070 &data_byte(0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5); 1071 &data_byte(0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2); 1072 &data_byte(0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17); 1073 &data_byte(0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73); 1074 &data_byte(0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88); 1075 &data_byte(0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb); 1076 &data_byte(0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c); 1077 &data_byte(0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79); 1078 &data_byte(0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9); 1079 &data_byte(0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08); 1080 &data_byte(0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6); 1081 &data_byte(0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a); 1082 &data_byte(0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e); 1083 &data_byte(0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e); 1084 &data_byte(0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94); 1085 &data_byte(0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf); 1086 &data_byte(0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68); 1087 &data_byte(0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); 1088 1089 &data_byte(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5); 1090 &data_byte(0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76); 1091 &data_byte(0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0); 1092 &data_byte(0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0); 1093 &data_byte(0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc); 1094 &data_byte(0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15); 1095 &data_byte(0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a); 1096 &data_byte(0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75); 1097 &data_byte(0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0); 1098 &data_byte(0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84); 1099 &data_byte(0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b); 1100 &data_byte(0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf); 1101 &data_byte(0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85); 1102 &data_byte(0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8); 1103 &data_byte(0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5); 1104 &data_byte(0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2); 1105 &data_byte(0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17); 1106 &data_byte(0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73); 1107 &data_byte(0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88); 1108 &data_byte(0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb); 1109 &data_byte(0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c); 1110 &data_byte(0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79); 1111 &data_byte(0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9); 1112 &data_byte(0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08); 1113 &data_byte(0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6); 1114 &data_byte(0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a); 1115 &data_byte(0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e); 1116 &data_byte(0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e); 1117 &data_byte(0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94); 1118 &data_byte(0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf); 1119 &data_byte(0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68); 1120 &data_byte(0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); 1121 1122 &data_byte(0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5); 1123 &data_byte(0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76); 1124 &data_byte(0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0); 1125 &data_byte(0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0); 1126 &data_byte(0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc); 1127 &data_byte(0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15); 1128 &data_byte(0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a); 1129 &data_byte(0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75); 1130 &data_byte(0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0); 1131 &data_byte(0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84); 1132 &data_byte(0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b); 1133 &data_byte(0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf); 1134 &data_byte(0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85); 1135 &data_byte(0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8); 1136 &data_byte(0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5); 1137 &data_byte(0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2); 1138 &data_byte(0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17); 1139 &data_byte(0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73); 1140 &data_byte(0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88); 1141 &data_byte(0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb); 1142 &data_byte(0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c); 1143 &data_byte(0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79); 1144 &data_byte(0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9); 1145 &data_byte(0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08); 1146 &data_byte(0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6); 1147 &data_byte(0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a); 1148 &data_byte(0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e); 1149 &data_byte(0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e); 1150 &data_byte(0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94); 1151 &data_byte(0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf); 1152 &data_byte(0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68); 1153 &data_byte(0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); 1154#rcon: 1155 &data_word(0x00000001, 0x00000002, 0x00000004, 0x00000008); 1156 &data_word(0x00000010, 0x00000020, 0x00000040, 0x00000080); 1157 &data_word(0x0000001b, 0x00000036, 0x00000000, 0x00000000); 1158 &data_word(0x00000000, 0x00000000, 0x00000000, 0x00000000); 1159 &previous(); 1160 1161# void aes_encrypt_internal(const void *inp, void *out, const AES_KEY *key); 1162&function_begin("aes_encrypt_internal"); 1163 &mov ($acc,&wparam(0)); # load inp 1164 &mov ($key,&wparam(2)); # load key 1165 1166 &mov ($s0,"esp"); 1167 &sub ("esp",36); 1168 &and ("esp",-64); # align to cache-line 1169 1170 # place stack frame just "above" the key schedule 1171 &lea ($s1,&DWP(-64-63,$key)); 1172 &sub ($s1,"esp"); 1173 &neg ($s1); 1174 &and ($s1,0x3C0); # modulo 1024, but aligned to cache-line 1175 &sub ("esp",$s1); 1176 &add ("esp",4); # 4 is reserved for caller's return address 1177 &mov ($_esp,$s0); # save stack pointer 1178 1179 &picsetup($tbl); 1180 &picsymbol($s0, "OPENSSL_ia32cap_P", $tbl); 1181 &picsymbol($tbl, &label("AES_Te"), $tbl); 1182 1183 # pick Te4 copy which can't "overlap" with stack frame or key schedule 1184 &lea ($s1,&DWP(768-4,"esp")); 1185 &sub ($s1,$tbl); 1186 &and ($s1,0x300); 1187 &lea ($tbl,&DWP(2048+128,$tbl,$s1)); 1188 1189 if (!$x86only) { 1190 &bt (&DWP(0,$s0),"\$IA32CAP_BIT0_SSE"); # check for SSE bit 1191 &jnc (&label("x86")); 1192 1193 &movq ("mm0",&QWP(0,$acc)); 1194 &movq ("mm4",&QWP(8,$acc)); 1195 &call ("_sse_AES_encrypt_compact"); 1196 &mov ("esp",$_esp); # restore stack pointer 1197 &mov ($acc,&wparam(1)); # load out 1198 &movq (&QWP(0,$acc),"mm0"); # write output data 1199 &movq (&QWP(8,$acc),"mm4"); 1200 &emms (); 1201 &function_end_A(); 1202 } 1203 &set_label("x86",16); 1204 &mov ($_tbl,$tbl); 1205 &mov ($s0,&DWP(0,$acc)); # load input data 1206 &mov ($s1,&DWP(4,$acc)); 1207 &mov ($s2,&DWP(8,$acc)); 1208 &mov ($s3,&DWP(12,$acc)); 1209 &call ("_x86_AES_encrypt_compact"); 1210 &mov ("esp",$_esp); # restore stack pointer 1211 &mov ($acc,&wparam(1)); # load out 1212 &mov (&DWP(0,$acc),$s0); # write output data 1213 &mov (&DWP(4,$acc),$s1); 1214 &mov (&DWP(8,$acc),$s2); 1215 &mov (&DWP(12,$acc),$s3); 1216&function_end("aes_encrypt_internal"); 1217 1218#--------------------------------------------------------------------# 1219 1220###################################################################### 1221# "Compact" block function 1222###################################################################### 1223 1224sub deccompact() 1225{ my $Fn = mov; 1226 while ($#_>5) { pop(@_); $Fn=sub{}; } 1227 my ($i,$td,@s)=@_; 1228 my $tmp = $key; 1229 my $out = $i==3?$s[0]:$acc; 1230 1231 # $Fn is used in first compact round and its purpose is to 1232 # void restoration of some values from stack, so that after 1233 # 4xdeccompact with extra argument $key, $s0 and $s1 values 1234 # are left there... 1235 if($i==3) { &$Fn ($key,$__key); } 1236 else { &mov ($out,$s[0]); } 1237 &and ($out,0xFF); 1238 &movz ($out,&BP(-128,$td,$out,1)); 1239 1240 if ($i==3) { $tmp=$s[1]; } 1241 &movz ($tmp,&HB($s[1])); 1242 &movz ($tmp,&BP(-128,$td,$tmp,1)); 1243 &shl ($tmp,8); 1244 &xor ($out,$tmp); 1245 1246 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$acc); } 1247 else { mov ($tmp,$s[2]); } 1248 &shr ($tmp,16); 1249 &and ($tmp,0xFF); 1250 &movz ($tmp,&BP(-128,$td,$tmp,1)); 1251 &shl ($tmp,16); 1252 &xor ($out,$tmp); 1253 1254 if ($i==3) { $tmp=$s[3]; &$Fn ($s[2],$__s1); } 1255 else { &mov ($tmp,$s[3]); } 1256 &shr ($tmp,24); 1257 &movz ($tmp,&BP(-128,$td,$tmp,1)); 1258 &shl ($tmp,24); 1259 &xor ($out,$tmp); 1260 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 1261 if ($i==3) { &$Fn ($s[3],$__s0); } 1262} 1263 1264# must be called with 2,3,0,1 as argument sequence!!! 1265sub dectransform() 1266{ my @s = ($s0,$s1,$s2,$s3); 1267 my $i = shift; 1268 my $tmp = $key; 1269 my $tp2 = @s[($i+2)%4]; $tp2 = @s[2] if ($i==1); 1270 my $tp4 = @s[($i+3)%4]; $tp4 = @s[3] if ($i==1); 1271 my $tp8 = $tbl; 1272 1273 &mov ($acc,$s[$i]); 1274 &and ($acc,0x80808080); 1275 &mov ($tmp,$acc); 1276 &shr ($tmp,7); 1277 &lea ($tp2,&DWP(0,$s[$i],$s[$i])); 1278 &sub ($acc,$tmp); 1279 &and ($tp2,0xfefefefe); 1280 &and ($acc,0x1b1b1b1b); 1281 &xor ($acc,$tp2); 1282 &mov ($tp2,$acc); 1283 1284 &and ($acc,0x80808080); 1285 &mov ($tmp,$acc); 1286 &shr ($tmp,7); 1287 &lea ($tp4,&DWP(0,$tp2,$tp2)); 1288 &sub ($acc,$tmp); 1289 &and ($tp4,0xfefefefe); 1290 &and ($acc,0x1b1b1b1b); 1291 &xor ($tp2,$s[$i]); # tp2^tp1 1292 &xor ($acc,$tp4); 1293 &mov ($tp4,$acc); 1294 1295 &and ($acc,0x80808080); 1296 &mov ($tmp,$acc); 1297 &shr ($tmp,7); 1298 &lea ($tp8,&DWP(0,$tp4,$tp4)); 1299 &sub ($acc,$tmp); 1300 &and ($tp8,0xfefefefe); 1301 &and ($acc,0x1b1b1b1b); 1302 &xor ($tp4,$s[$i]); # tp4^tp1 1303 &rotl ($s[$i],8); # = ROTATE(tp1,8) 1304 &xor ($tp8,$acc); 1305 1306 &xor ($s[$i],$tp2); 1307 &xor ($tp2,$tp8); 1308 &rotl ($tp2,24); 1309 &xor ($s[$i],$tp4); 1310 &xor ($tp4,$tp8); 1311 &rotl ($tp4,16); 1312 &xor ($s[$i],$tp8); # ^= tp8^(tp4^tp1)^(tp2^tp1) 1313 &rotl ($tp8,8); 1314 &xor ($s[$i],$tp2); # ^= ROTATE(tp8^tp2^tp1,24) 1315 &xor ($s[$i],$tp4); # ^= ROTATE(tp8^tp4^tp1,16) 1316 &mov ($s[0],$__s0) if($i==2); #prefetch $s0 1317 &mov ($s[1],$__s1) if($i==3); #prefetch $s1 1318 &mov ($s[2],$__s2) if($i==1); 1319 &xor ($s[$i],$tp8); # ^= ROTATE(tp8,8) 1320 1321 &mov ($s[3],$__s3) if($i==1); 1322 &mov (&DWP(4+4*$i,"esp"),$s[$i]) if($i>=2); 1323} 1324 1325&function_begin_B("_x86_AES_decrypt_compact"); 1326 # note that caller is expected to allocate stack frame for me! 1327 &mov ($__key,$key); # save key 1328 1329 &xor ($s0,&DWP(0,$key)); # xor with key 1330 &xor ($s1,&DWP(4,$key)); 1331 &xor ($s2,&DWP(8,$key)); 1332 &xor ($s3,&DWP(12,$key)); 1333 1334 &mov ($acc,&DWP(240,$key)); # load key->rounds 1335 1336 &lea ($acc,&DWP(-2,$acc,$acc)); 1337 &lea ($acc,&DWP(0,$key,$acc,8)); 1338 &mov ($__end,$acc); # end of key schedule 1339 1340 # prefetch Td4 1341 &mov ($key,&DWP(0-128,$tbl)); 1342 &mov ($acc,&DWP(32-128,$tbl)); 1343 &mov ($key,&DWP(64-128,$tbl)); 1344 &mov ($acc,&DWP(96-128,$tbl)); 1345 &mov ($key,&DWP(128-128,$tbl)); 1346 &mov ($acc,&DWP(160-128,$tbl)); 1347 &mov ($key,&DWP(192-128,$tbl)); 1348 &mov ($acc,&DWP(224-128,$tbl)); 1349 1350 &set_label("loop",16); 1351 1352 &deccompact(0,$tbl,$s0,$s3,$s2,$s1,1); 1353 &deccompact(1,$tbl,$s1,$s0,$s3,$s2,1); 1354 &deccompact(2,$tbl,$s2,$s1,$s0,$s3,1); 1355 &deccompact(3,$tbl,$s3,$s2,$s1,$s0,1); 1356 &dectransform(2); 1357 &dectransform(3); 1358 &dectransform(0); 1359 &dectransform(1); 1360 &mov ($key,$__key); 1361 &mov ($tbl,$__tbl); 1362 &add ($key,16); # advance rd_key 1363 &xor ($s0,&DWP(0,$key)); 1364 &xor ($s1,&DWP(4,$key)); 1365 &xor ($s2,&DWP(8,$key)); 1366 &xor ($s3,&DWP(12,$key)); 1367 1368 &cmp ($key,$__end); 1369 &mov ($__key,$key); 1370 &jb (&label("loop")); 1371 1372 &deccompact(0,$tbl,$s0,$s3,$s2,$s1); 1373 &deccompact(1,$tbl,$s1,$s0,$s3,$s2); 1374 &deccompact(2,$tbl,$s2,$s1,$s0,$s3); 1375 &deccompact(3,$tbl,$s3,$s2,$s1,$s0); 1376 1377 &xor ($s0,&DWP(16,$key)); 1378 &xor ($s1,&DWP(20,$key)); 1379 &xor ($s2,&DWP(24,$key)); 1380 &xor ($s3,&DWP(28,$key)); 1381 1382 &ret (); 1383&function_end_B("_x86_AES_decrypt_compact"); 1384 1385###################################################################### 1386# "Compact" SSE block function. 1387###################################################################### 1388 1389sub sse_deccompact() 1390{ 1391 &pshufw ("mm1","mm0",0x0c); # 7, 6, 1, 0 1392 &movd ("eax","mm1"); # 7, 6, 1, 0 1393 1394 &pshufw ("mm5","mm4",0x09); # 13,12,11,10 1395 &movz ($acc,&LB("eax")); # 0 1396 &movz ("ecx",&BP(-128,$tbl,$acc,1)); # 0 1397 &movd ("ebx","mm5"); # 13,12,11,10 1398 &movz ("edx",&HB("eax")); # 1 1399 &movz ("edx",&BP(-128,$tbl,"edx",1)); # 1 1400 &shl ("edx",8); # 1 1401 1402 &pshufw ("mm2","mm0",0x06); # 3, 2, 5, 4 1403 &movz ($acc,&LB("ebx")); # 10 1404 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 10 1405 &shl ($acc,16); # 10 1406 &or ("ecx",$acc); # 10 1407 &shr ("eax",16); # 7, 6 1408 &movz ($acc,&HB("ebx")); # 11 1409 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 11 1410 &shl ($acc,24); # 11 1411 &or ("edx",$acc); # 11 1412 &shr ("ebx",16); # 13,12 1413 1414 &pshufw ("mm6","mm4",0x03); # 9, 8,15,14 1415 &movz ($acc,&HB("eax")); # 7 1416 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 7 1417 &shl ($acc,24); # 7 1418 &or ("ecx",$acc); # 7 1419 &movz ($acc,&HB("ebx")); # 13 1420 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 13 1421 &shl ($acc,8); # 13 1422 &or ("ecx",$acc); # 13 1423 &movd ("mm0","ecx"); # t[0] collected 1424 1425 &movz ($acc,&LB("eax")); # 6 1426 &movd ("eax","mm2"); # 3, 2, 5, 4 1427 &movz ("ecx",&BP(-128,$tbl,$acc,1)); # 6 1428 &shl ("ecx",16); # 6 1429 &movz ($acc,&LB("ebx")); # 12 1430 &movd ("ebx","mm6"); # 9, 8,15,14 1431 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 12 1432 &or ("ecx",$acc); # 12 1433 1434 &movz ($acc,&LB("eax")); # 4 1435 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 4 1436 &or ("edx",$acc); # 4 1437 &movz ($acc,&LB("ebx")); # 14 1438 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 14 1439 &shl ($acc,16); # 14 1440 &or ("edx",$acc); # 14 1441 &movd ("mm1","edx"); # t[1] collected 1442 1443 &movz ($acc,&HB("eax")); # 5 1444 &movz ("edx",&BP(-128,$tbl,$acc,1)); # 5 1445 &shl ("edx",8); # 5 1446 &movz ($acc,&HB("ebx")); # 15 1447 &shr ("eax",16); # 3, 2 1448 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 15 1449 &shl ($acc,24); # 15 1450 &or ("edx",$acc); # 15 1451 &shr ("ebx",16); # 9, 8 1452 1453 &punpckldq ("mm0","mm1"); # t[0,1] collected 1454 1455 &movz ($acc,&HB("ebx")); # 9 1456 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 9 1457 &shl ($acc,8); # 9 1458 &or ("ecx",$acc); # 9 1459 &and ("ebx",0xff); # 8 1460 &movz ("ebx",&BP(-128,$tbl,"ebx",1)); # 8 1461 &or ("edx","ebx"); # 8 1462 &movz ($acc,&LB("eax")); # 2 1463 &movz ($acc,&BP(-128,$tbl,$acc,1)); # 2 1464 &shl ($acc,16); # 2 1465 &or ("edx",$acc); # 2 1466 &movd ("mm4","edx"); # t[2] collected 1467 &movz ("eax",&HB("eax")); # 3 1468 &movz ("eax",&BP(-128,$tbl,"eax",1)); # 3 1469 &shl ("eax",24); # 3 1470 &or ("ecx","eax"); # 3 1471 &movd ("mm5","ecx"); # t[3] collected 1472 1473 &punpckldq ("mm4","mm5"); # t[2,3] collected 1474} 1475 1476 if (!$x86only) { 1477&function_begin_B("_sse_AES_decrypt_compact"); 1478 &pxor ("mm0",&QWP(0,$key)); # 7, 6, 5, 4, 3, 2, 1, 0 1479 &pxor ("mm4",&QWP(8,$key)); # 15,14,13,12,11,10, 9, 8 1480 1481 # note that caller is expected to allocate stack frame for me! 1482 &mov ($acc,&DWP(240,$key)); # load key->rounds 1483 &lea ($acc,&DWP(-2,$acc,$acc)); 1484 &lea ($acc,&DWP(0,$key,$acc,8)); 1485 &mov ($__end,$acc); # end of key schedule 1486 1487 &mov ($s0,0x1b1b1b1b); # magic constant 1488 &mov (&DWP(8,"esp"),$s0); 1489 &mov (&DWP(12,"esp"),$s0); 1490 1491 # prefetch Td4 1492 &mov ($s0,&DWP(0-128,$tbl)); 1493 &mov ($s1,&DWP(32-128,$tbl)); 1494 &mov ($s2,&DWP(64-128,$tbl)); 1495 &mov ($s3,&DWP(96-128,$tbl)); 1496 &mov ($s0,&DWP(128-128,$tbl)); 1497 &mov ($s1,&DWP(160-128,$tbl)); 1498 &mov ($s2,&DWP(192-128,$tbl)); 1499 &mov ($s3,&DWP(224-128,$tbl)); 1500 1501 &set_label("loop",16); 1502 &sse_deccompact(); 1503 &add ($key,16); 1504 &cmp ($key,$__end); 1505 &ja (&label("out")); 1506 1507 # ROTATE(x^y,N) == ROTATE(x,N)^ROTATE(y,N) 1508 &movq ("mm3","mm0"); &movq ("mm7","mm4"); 1509 &movq ("mm2","mm0",1); &movq ("mm6","mm4",1); 1510 &movq ("mm1","mm0"); &movq ("mm5","mm4"); 1511 &pshufw ("mm0","mm0",0xb1); &pshufw ("mm4","mm4",0xb1);# = ROTATE(tp0,16) 1512 &pslld ("mm2",8); &pslld ("mm6",8); 1513 &psrld ("mm3",8); &psrld ("mm7",8); 1514 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= tp0<<8 1515 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= tp0>>8 1516 &pslld ("mm2",16); &pslld ("mm6",16); 1517 &psrld ("mm3",16); &psrld ("mm7",16); 1518 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= tp0<<24 1519 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= tp0>>24 1520 1521 &movq ("mm3",&QWP(8,"esp")); 1522 &pxor ("mm2","mm2"); &pxor ("mm6","mm6"); 1523 &pcmpgtb("mm2","mm1"); &pcmpgtb("mm6","mm5"); 1524 &pand ("mm2","mm3"); &pand ("mm6","mm3"); 1525 &paddb ("mm1","mm1"); &paddb ("mm5","mm5"); 1526 &pxor ("mm1","mm2"); &pxor ("mm5","mm6"); # tp2 1527 &movq ("mm3","mm1"); &movq ("mm7","mm5"); 1528 &movq ("mm2","mm1"); &movq ("mm6","mm5"); 1529 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= tp2 1530 &pslld ("mm3",24); &pslld ("mm7",24); 1531 &psrld ("mm2",8); &psrld ("mm6",8); 1532 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= tp2<<24 1533 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= tp2>>8 1534 1535 &movq ("mm2",&QWP(8,"esp")); 1536 &pxor ("mm3","mm3"); &pxor ("mm7","mm7"); 1537 &pcmpgtb("mm3","mm1"); &pcmpgtb("mm7","mm5"); 1538 &pand ("mm3","mm2"); &pand ("mm7","mm2"); 1539 &paddb ("mm1","mm1"); &paddb ("mm5","mm5"); 1540 &pxor ("mm1","mm3"); &pxor ("mm5","mm7"); # tp4 1541 &pshufw ("mm3","mm1",0xb1); &pshufw ("mm7","mm5",0xb1); 1542 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= tp4 1543 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= ROTATE(tp4,16) 1544 1545 &pxor ("mm3","mm3"); &pxor ("mm7","mm7"); 1546 &pcmpgtb("mm3","mm1"); &pcmpgtb("mm7","mm5"); 1547 &pand ("mm3","mm2"); &pand ("mm7","mm2"); 1548 &paddb ("mm1","mm1"); &paddb ("mm5","mm5"); 1549 &pxor ("mm1","mm3"); &pxor ("mm5","mm7"); # tp8 1550 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= tp8 1551 &movq ("mm3","mm1"); &movq ("mm7","mm5"); 1552 &pshufw ("mm2","mm1",0xb1); &pshufw ("mm6","mm5",0xb1); 1553 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); # ^= ROTATE(tp8,16) 1554 &pslld ("mm1",8); &pslld ("mm5",8); 1555 &psrld ("mm3",8); &psrld ("mm7",8); 1556 &movq ("mm2",&QWP(0,$key)); &movq ("mm6",&QWP(8,$key)); 1557 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= tp8<<8 1558 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= tp8>>8 1559 &mov ($s0,&DWP(0-128,$tbl)); 1560 &pslld ("mm1",16); &pslld ("mm5",16); 1561 &mov ($s1,&DWP(64-128,$tbl)); 1562 &psrld ("mm3",16); &psrld ("mm7",16); 1563 &mov ($s2,&DWP(128-128,$tbl)); 1564 &pxor ("mm0","mm1"); &pxor ("mm4","mm5"); # ^= tp8<<24 1565 &mov ($s3,&DWP(192-128,$tbl)); 1566 &pxor ("mm0","mm3"); &pxor ("mm4","mm7"); # ^= tp8>>24 1567 1568 &pxor ("mm0","mm2"); &pxor ("mm4","mm6"); 1569 &jmp (&label("loop")); 1570 1571 &set_label("out",16); 1572 &pxor ("mm0",&QWP(0,$key)); 1573 &pxor ("mm4",&QWP(8,$key)); 1574 1575 &ret (); 1576&function_end_B("_sse_AES_decrypt_compact"); 1577 } 1578 1579###################################################################### 1580# Vanilla block function. 1581###################################################################### 1582 1583sub decstep() 1584{ my ($i,$td,@s) = @_; 1585 my $tmp = $key; 1586 my $out = $i==3?$s[0]:$acc; 1587 1588 # no instructions are reordered, as performance appears 1589 # optimal... or rather that all attempts to reorder didn't 1590 # result in better performance [which by the way is not a 1591 # bit lower than ecryption]. 1592 if($i==3) { &mov ($key,$__key); } 1593 else { &mov ($out,$s[0]); } 1594 &and ($out,0xFF); 1595 &mov ($out,&DWP(0,$td,$out,8)); 1596 1597 if ($i==3) { $tmp=$s[1]; } 1598 &movz ($tmp,&HB($s[1])); 1599 &xor ($out,&DWP(3,$td,$tmp,8)); 1600 1601 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$acc); } 1602 else { &mov ($tmp,$s[2]); } 1603 &shr ($tmp,16); 1604 &and ($tmp,0xFF); 1605 &xor ($out,&DWP(2,$td,$tmp,8)); 1606 1607 if ($i==3) { $tmp=$s[3]; &mov ($s[2],$__s1); } 1608 else { &mov ($tmp,$s[3]); } 1609 &shr ($tmp,24); 1610 &xor ($out,&DWP(1,$td,$tmp,8)); 1611 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 1612 if ($i==3) { &mov ($s[3],$__s0); } 1613 &comment(); 1614} 1615 1616sub declast() 1617{ my ($i,$td,@s)=@_; 1618 my $tmp = $key; 1619 my $out = $i==3?$s[0]:$acc; 1620 1621 if($i==0) { &lea ($td,&DWP(2048+128,$td)); 1622 &mov ($tmp,&DWP(0-128,$td)); 1623 &mov ($acc,&DWP(32-128,$td)); 1624 &mov ($tmp,&DWP(64-128,$td)); 1625 &mov ($acc,&DWP(96-128,$td)); 1626 &mov ($tmp,&DWP(128-128,$td)); 1627 &mov ($acc,&DWP(160-128,$td)); 1628 &mov ($tmp,&DWP(192-128,$td)); 1629 &mov ($acc,&DWP(224-128,$td)); 1630 &lea ($td,&DWP(-128,$td)); } 1631 if($i==3) { &mov ($key,$__key); } 1632 else { &mov ($out,$s[0]); } 1633 &and ($out,0xFF); 1634 &movz ($out,&BP(0,$td,$out,1)); 1635 1636 if ($i==3) { $tmp=$s[1]; } 1637 &movz ($tmp,&HB($s[1])); 1638 &movz ($tmp,&BP(0,$td,$tmp,1)); 1639 &shl ($tmp,8); 1640 &xor ($out,$tmp); 1641 1642 if ($i==3) { $tmp=$s[2]; &mov ($s[1],$acc); } 1643 else { mov ($tmp,$s[2]); } 1644 &shr ($tmp,16); 1645 &and ($tmp,0xFF); 1646 &movz ($tmp,&BP(0,$td,$tmp,1)); 1647 &shl ($tmp,16); 1648 &xor ($out,$tmp); 1649 1650 if ($i==3) { $tmp=$s[3]; &mov ($s[2],$__s1); } 1651 else { &mov ($tmp,$s[3]); } 1652 &shr ($tmp,24); 1653 &movz ($tmp,&BP(0,$td,$tmp,1)); 1654 &shl ($tmp,24); 1655 &xor ($out,$tmp); 1656 if ($i<2) { &mov (&DWP(4+4*$i,"esp"),$out); } 1657 if ($i==3) { &mov ($s[3],$__s0); 1658 &lea ($td,&DWP(-2048,$td)); } 1659} 1660 1661&function_begin_B("_x86_AES_decrypt"); 1662 # note that caller is expected to allocate stack frame for me! 1663 &mov ($__key,$key); # save key 1664 1665 &xor ($s0,&DWP(0,$key)); # xor with key 1666 &xor ($s1,&DWP(4,$key)); 1667 &xor ($s2,&DWP(8,$key)); 1668 &xor ($s3,&DWP(12,$key)); 1669 1670 &mov ($acc,&DWP(240,$key)); # load key->rounds 1671 1672 if ($small_footprint) { 1673 &lea ($acc,&DWP(-2,$acc,$acc)); 1674 &lea ($acc,&DWP(0,$key,$acc,8)); 1675 &mov ($__end,$acc); # end of key schedule 1676 &set_label("loop",16); 1677 &decstep(0,$tbl,$s0,$s3,$s2,$s1); 1678 &decstep(1,$tbl,$s1,$s0,$s3,$s2); 1679 &decstep(2,$tbl,$s2,$s1,$s0,$s3); 1680 &decstep(3,$tbl,$s3,$s2,$s1,$s0); 1681 &add ($key,16); # advance rd_key 1682 &xor ($s0,&DWP(0,$key)); 1683 &xor ($s1,&DWP(4,$key)); 1684 &xor ($s2,&DWP(8,$key)); 1685 &xor ($s3,&DWP(12,$key)); 1686 &cmp ($key,$__end); 1687 &mov ($__key,$key); 1688 &jb (&label("loop")); 1689 } 1690 else { 1691 &cmp ($acc,10); 1692 &jle (&label("10rounds")); 1693 &cmp ($acc,12); 1694 &jle (&label("12rounds")); 1695 1696 &set_label("14rounds",4); 1697 for ($i=1;$i<3;$i++) { 1698 &decstep(0,$tbl,$s0,$s3,$s2,$s1); 1699 &decstep(1,$tbl,$s1,$s0,$s3,$s2); 1700 &decstep(2,$tbl,$s2,$s1,$s0,$s3); 1701 &decstep(3,$tbl,$s3,$s2,$s1,$s0); 1702 &xor ($s0,&DWP(16*$i+0,$key)); 1703 &xor ($s1,&DWP(16*$i+4,$key)); 1704 &xor ($s2,&DWP(16*$i+8,$key)); 1705 &xor ($s3,&DWP(16*$i+12,$key)); 1706 } 1707 &add ($key,32); 1708 &mov ($__key,$key); # advance rd_key 1709 &set_label("12rounds",4); 1710 for ($i=1;$i<3;$i++) { 1711 &decstep(0,$tbl,$s0,$s3,$s2,$s1); 1712 &decstep(1,$tbl,$s1,$s0,$s3,$s2); 1713 &decstep(2,$tbl,$s2,$s1,$s0,$s3); 1714 &decstep(3,$tbl,$s3,$s2,$s1,$s0); 1715 &xor ($s0,&DWP(16*$i+0,$key)); 1716 &xor ($s1,&DWP(16*$i+4,$key)); 1717 &xor ($s2,&DWP(16*$i+8,$key)); 1718 &xor ($s3,&DWP(16*$i+12,$key)); 1719 } 1720 &add ($key,32); 1721 &mov ($__key,$key); # advance rd_key 1722 &set_label("10rounds",4); 1723 for ($i=1;$i<10;$i++) { 1724 &decstep(0,$tbl,$s0,$s3,$s2,$s1); 1725 &decstep(1,$tbl,$s1,$s0,$s3,$s2); 1726 &decstep(2,$tbl,$s2,$s1,$s0,$s3); 1727 &decstep(3,$tbl,$s3,$s2,$s1,$s0); 1728 &xor ($s0,&DWP(16*$i+0,$key)); 1729 &xor ($s1,&DWP(16*$i+4,$key)); 1730 &xor ($s2,&DWP(16*$i+8,$key)); 1731 &xor ($s3,&DWP(16*$i+12,$key)); 1732 } 1733 } 1734 1735 &declast(0,$tbl,$s0,$s3,$s2,$s1); 1736 &declast(1,$tbl,$s1,$s0,$s3,$s2); 1737 &declast(2,$tbl,$s2,$s1,$s0,$s3); 1738 &declast(3,$tbl,$s3,$s2,$s1,$s0); 1739 1740 &add ($key,$small_footprint?16:160); 1741 &xor ($s0,&DWP(0,$key)); 1742 &xor ($s1,&DWP(4,$key)); 1743 &xor ($s2,&DWP(8,$key)); 1744 &xor ($s3,&DWP(12,$key)); 1745 1746 &ret (); 1747&function_end_B("_x86_AES_decrypt"); 1748 1749 &rodataseg(); 1750&set_label("AES_Td",64); 1751 &_data_word(0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a); 1752 &_data_word(0xcb6bab3b, 0xf1459d1f, 0xab58faac, 0x9303e34b); 1753 &_data_word(0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5); 1754 &_data_word(0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5); 1755 &_data_word(0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d); 1756 &_data_word(0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b); 1757 &_data_word(0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295); 1758 &_data_word(0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e); 1759 &_data_word(0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927); 1760 &_data_word(0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d); 1761 &_data_word(0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362); 1762 &_data_word(0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9); 1763 &_data_word(0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52); 1764 &_data_word(0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566); 1765 &_data_word(0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3); 1766 &_data_word(0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed); 1767 &_data_word(0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e); 1768 &_data_word(0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4); 1769 &_data_word(0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4); 1770 &_data_word(0x39ec830b, 0xaaef6040, 0x069f715e, 0x51106ebd); 1771 &_data_word(0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d); 1772 &_data_word(0xb58d5491, 0x055dc471, 0x6fd40604, 0xff155060); 1773 &_data_word(0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967); 1774 &_data_word(0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879); 1775 &_data_word(0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000); 1776 &_data_word(0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c); 1777 &_data_word(0xfbff0efd, 0x5638850f, 0x1ed5ae3d, 0x27392d36); 1778 &_data_word(0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624); 1779 &_data_word(0xb1670a0c, 0x0fe75793, 0xd296eeb4, 0x9e919b1b); 1780 &_data_word(0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c); 1781 &_data_word(0x0aba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12); 1782 &_data_word(0x0b0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14); 1783 &_data_word(0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3); 1784 &_data_word(0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b); 1785 &_data_word(0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8); 1786 &_data_word(0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684); 1787 &_data_word(0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7); 1788 &_data_word(0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177); 1789 &_data_word(0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947); 1790 &_data_word(0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322); 1791 &_data_word(0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498); 1792 &_data_word(0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f); 1793 &_data_word(0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54); 1794 &_data_word(0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382); 1795 &_data_word(0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf); 1796 &_data_word(0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb); 1797 &_data_word(0x097826cd, 0xf418596e, 0x01b79aec, 0xa89a4f83); 1798 &_data_word(0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef); 1799 &_data_word(0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029); 1800 &_data_word(0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235); 1801 &_data_word(0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733); 1802 &_data_word(0x4a9804f1, 0xf7daec41, 0x0e50cd7f, 0x2ff69117); 1803 &_data_word(0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4); 1804 &_data_word(0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546); 1805 &_data_word(0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb); 1806 &_data_word(0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d); 1807 &_data_word(0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb); 1808 &_data_word(0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a); 1809 &_data_word(0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773); 1810 &_data_word(0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478); 1811 &_data_word(0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2); 1812 &_data_word(0x72c31d16, 0x0c25e2bc, 0x8b493c28, 0x41950dff); 1813 &_data_word(0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664); 1814 &_data_word(0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0); 1815 1816#Td4: # four copies of Td4 to choose from to avoid L1 aliasing 1817 &data_byte(0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38); 1818 &data_byte(0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb); 1819 &data_byte(0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87); 1820 &data_byte(0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb); 1821 &data_byte(0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d); 1822 &data_byte(0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e); 1823 &data_byte(0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2); 1824 &data_byte(0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25); 1825 &data_byte(0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16); 1826 &data_byte(0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92); 1827 &data_byte(0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda); 1828 &data_byte(0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84); 1829 &data_byte(0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a); 1830 &data_byte(0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06); 1831 &data_byte(0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02); 1832 &data_byte(0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b); 1833 &data_byte(0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea); 1834 &data_byte(0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73); 1835 &data_byte(0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85); 1836 &data_byte(0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e); 1837 &data_byte(0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89); 1838 &data_byte(0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b); 1839 &data_byte(0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20); 1840 &data_byte(0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4); 1841 &data_byte(0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31); 1842 &data_byte(0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f); 1843 &data_byte(0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d); 1844 &data_byte(0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef); 1845 &data_byte(0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0); 1846 &data_byte(0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61); 1847 &data_byte(0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26); 1848 &data_byte(0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d); 1849 1850 &data_byte(0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38); 1851 &data_byte(0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb); 1852 &data_byte(0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87); 1853 &data_byte(0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb); 1854 &data_byte(0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d); 1855 &data_byte(0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e); 1856 &data_byte(0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2); 1857 &data_byte(0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25); 1858 &data_byte(0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16); 1859 &data_byte(0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92); 1860 &data_byte(0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda); 1861 &data_byte(0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84); 1862 &data_byte(0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a); 1863 &data_byte(0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06); 1864 &data_byte(0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02); 1865 &data_byte(0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b); 1866 &data_byte(0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea); 1867 &data_byte(0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73); 1868 &data_byte(0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85); 1869 &data_byte(0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e); 1870 &data_byte(0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89); 1871 &data_byte(0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b); 1872 &data_byte(0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20); 1873 &data_byte(0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4); 1874 &data_byte(0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31); 1875 &data_byte(0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f); 1876 &data_byte(0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d); 1877 &data_byte(0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef); 1878 &data_byte(0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0); 1879 &data_byte(0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61); 1880 &data_byte(0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26); 1881 &data_byte(0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d); 1882 1883 &data_byte(0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38); 1884 &data_byte(0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb); 1885 &data_byte(0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87); 1886 &data_byte(0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb); 1887 &data_byte(0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d); 1888 &data_byte(0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e); 1889 &data_byte(0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2); 1890 &data_byte(0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25); 1891 &data_byte(0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16); 1892 &data_byte(0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92); 1893 &data_byte(0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda); 1894 &data_byte(0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84); 1895 &data_byte(0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a); 1896 &data_byte(0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06); 1897 &data_byte(0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02); 1898 &data_byte(0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b); 1899 &data_byte(0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea); 1900 &data_byte(0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73); 1901 &data_byte(0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85); 1902 &data_byte(0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e); 1903 &data_byte(0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89); 1904 &data_byte(0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b); 1905 &data_byte(0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20); 1906 &data_byte(0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4); 1907 &data_byte(0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31); 1908 &data_byte(0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f); 1909 &data_byte(0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d); 1910 &data_byte(0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef); 1911 &data_byte(0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0); 1912 &data_byte(0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61); 1913 &data_byte(0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26); 1914 &data_byte(0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d); 1915 1916 &data_byte(0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38); 1917 &data_byte(0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb); 1918 &data_byte(0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87); 1919 &data_byte(0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb); 1920 &data_byte(0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d); 1921 &data_byte(0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e); 1922 &data_byte(0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2); 1923 &data_byte(0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25); 1924 &data_byte(0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16); 1925 &data_byte(0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92); 1926 &data_byte(0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda); 1927 &data_byte(0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84); 1928 &data_byte(0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a); 1929 &data_byte(0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06); 1930 &data_byte(0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02); 1931 &data_byte(0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b); 1932 &data_byte(0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea); 1933 &data_byte(0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73); 1934 &data_byte(0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85); 1935 &data_byte(0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e); 1936 &data_byte(0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89); 1937 &data_byte(0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b); 1938 &data_byte(0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20); 1939 &data_byte(0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4); 1940 &data_byte(0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31); 1941 &data_byte(0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f); 1942 &data_byte(0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d); 1943 &data_byte(0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef); 1944 &data_byte(0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0); 1945 &data_byte(0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61); 1946 &data_byte(0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26); 1947 &data_byte(0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d); 1948 &previous(); 1949 1950# void aes_decrypt_internal(const void *inp, void *out, const AES_KEY *key); 1951&function_begin("aes_decrypt_internal"); 1952 &mov ($acc,&wparam(0)); # load inp 1953 &mov ($key,&wparam(2)); # load key 1954 1955 &mov ($s0,"esp"); 1956 &sub ("esp",36); 1957 &and ("esp",-64); # align to cache-line 1958 1959 # place stack frame just "above" the key schedule 1960 &lea ($s1,&DWP(-64-63,$key)); 1961 &sub ($s1,"esp"); 1962 &neg ($s1); 1963 &and ($s1,0x3C0); # modulo 1024, but aligned to cache-line 1964 &sub ("esp",$s1); 1965 &add ("esp",4); # 4 is reserved for caller's return address 1966 &mov ($_esp,$s0); # save stack pointer 1967 1968 &picsetup($tbl); 1969 &picsymbol($s0, "OPENSSL_ia32cap_P", $tbl); 1970 &picsymbol($tbl, &label("AES_Td"), $tbl); 1971 1972 # pick Td4 copy which can't "overlap" with stack frame or key schedule 1973 &lea ($s1,&DWP(768-4,"esp")); 1974 &sub ($s1,$tbl); 1975 &and ($s1,0x300); 1976 &lea ($tbl,&DWP(2048+128,$tbl,$s1)); 1977 1978 if (!$x86only) { 1979 &bt (&DWP(0,$s0),"\$IA32CAP_BIT0_SSE"); # check for SSE bit 1980 &jnc (&label("x86")); 1981 1982 &movq ("mm0",&QWP(0,$acc)); 1983 &movq ("mm4",&QWP(8,$acc)); 1984 &call ("_sse_AES_decrypt_compact"); 1985 &mov ("esp",$_esp); # restore stack pointer 1986 &mov ($acc,&wparam(1)); # load out 1987 &movq (&QWP(0,$acc),"mm0"); # write output data 1988 &movq (&QWP(8,$acc),"mm4"); 1989 &emms (); 1990 &function_end_A(); 1991 } 1992 &set_label("x86",16); 1993 &mov ($_tbl,$tbl); 1994 &mov ($s0,&DWP(0,$acc)); # load input data 1995 &mov ($s1,&DWP(4,$acc)); 1996 &mov ($s2,&DWP(8,$acc)); 1997 &mov ($s3,&DWP(12,$acc)); 1998 &call ("_x86_AES_decrypt_compact"); 1999 &mov ("esp",$_esp); # restore stack pointer 2000 &mov ($acc,&wparam(1)); # load out 2001 &mov (&DWP(0,$acc),$s0); # write output data 2002 &mov (&DWP(4,$acc),$s1); 2003 &mov (&DWP(8,$acc),$s2); 2004 &mov (&DWP(12,$acc),$s3); 2005&function_end("aes_decrypt_internal"); 2006 2007# void aes_cbc_encrypt_internal(const void char *inp, unsigned char *out, 2008# size_t length, const AES_KEY *key, unsigned char *ivp,const int enc); 2009{ 2010# stack frame layout 2011# -4(%esp) # return address 0(%esp) 2012# 0(%esp) # s0 backing store 4(%esp) 2013# 4(%esp) # s1 backing store 8(%esp) 2014# 8(%esp) # s2 backing store 12(%esp) 2015# 12(%esp) # s3 backing store 16(%esp) 2016# 16(%esp) # key backup 20(%esp) 2017# 20(%esp) # end of key schedule 24(%esp) 2018# 24(%esp) # %ebp backup 28(%esp) 2019# 28(%esp) # %esp backup 2020my $_inp=&DWP(32,"esp"); # copy of wparam(0) 2021my $_out=&DWP(36,"esp"); # copy of wparam(1) 2022my $_len=&DWP(40,"esp"); # copy of wparam(2) 2023my $_key=&DWP(44,"esp"); # copy of wparam(3) 2024my $_ivp=&DWP(48,"esp"); # copy of wparam(4) 2025my $_tmp=&DWP(52,"esp"); # volatile variable 2026# 2027my $ivec=&DWP(60,"esp"); # ivec[16] 2028my $aes_key=&DWP(76,"esp"); # copy of aes_key 2029my $mark=&DWP(76+240,"esp"); # copy of aes_key->rounds 2030 2031&function_begin("aes_cbc_encrypt_internal"); 2032 &mov ($s2 eq "ecx"? $s2 : "",&wparam(2)); # load len 2033 &cmp ($s2,0); 2034 &je (&label("drop_out")); 2035 2036 &picsetup($tbl); 2037 &picsymbol($s0, "OPENSSL_ia32cap_P", $tbl); 2038 &picsymbol($tbl, &label("AES_Te"), $tbl); 2039 &cmp (&wparam(5),0); 2040 &jne (&label("picked_te")); 2041 &lea ($tbl,&DWP(&label("AES_Td")."-".&label("AES_Te"),$tbl)); 2042 &set_label("picked_te"); 2043 2044 # one can argue if this is required 2045 &pushf (); 2046 &cld (); 2047 2048 &cmp ($s2,$speed_limit); 2049 &jb (&label("slow_way")); 2050 &test ($s2,15); 2051 &jnz (&label("slow_way")); 2052 if (!$x86only) { 2053 &bt (&DWP(0,$s0),"\$IA32CAP_BIT0_HT"); # check for hyper-threading bit 2054 &jc (&label("slow_way")); 2055 } 2056 # pre-allocate aligned stack frame... 2057 &lea ($acc,&DWP(-80-244,"esp")); 2058 &and ($acc,-64); 2059 2060 # ... and make sure it doesn't alias with $tbl modulo 4096 2061 &mov ($s0,$tbl); 2062 &lea ($s1,&DWP(2048+256,$tbl)); 2063 &mov ($s3,$acc); 2064 &and ($s0,0xfff); # s = %ebp&0xfff 2065 &and ($s1,0xfff); # e = (%ebp+2048+256)&0xfff 2066 &and ($s3,0xfff); # p = %esp&0xfff 2067 2068 &cmp ($s3,$s1); # if (p>=e) %esp =- (p-e); 2069 &jb (&label("tbl_break_out")); 2070 &sub ($s3,$s1); 2071 &sub ($acc,$s3); 2072 &jmp (&label("tbl_ok")); 2073 &set_label("tbl_break_out",4); # else %esp -= (p-s)&0xfff + framesz; 2074 &sub ($s3,$s0); 2075 &and ($s3,0xfff); 2076 &add ($s3,384); 2077 &sub ($acc,$s3); 2078 &set_label("tbl_ok",4); 2079 2080 &lea ($s3,&wparam(0)); # obtain pointer to parameter block 2081 &exch ("esp",$acc); # allocate stack frame 2082 &add ("esp",4); # reserve for return address! 2083 &mov ($_tbl,$tbl); # save %ebp 2084 &mov ($_esp,$acc); # save %esp 2085 2086 &mov ($s0,&DWP(0,$s3)); # load inp 2087 &mov ($s1,&DWP(4,$s3)); # load out 2088 #&mov ($s2,&DWP(8,$s3)); # load len 2089 &mov ($key,&DWP(12,$s3)); # load key 2090 &mov ($acc,&DWP(16,$s3)); # load ivp 2091 &mov ($s3,&DWP(20,$s3)); # load enc flag 2092 2093 &mov ($_inp,$s0); # save copy of inp 2094 &mov ($_out,$s1); # save copy of out 2095 &mov ($_len,$s2); # save copy of len 2096 &mov ($_key,$key); # save copy of key 2097 &mov ($_ivp,$acc); # save copy of ivp 2098 2099 &mov ($mark,0); # copy of aes_key->rounds = 0; 2100 # do we copy key schedule to stack? 2101 &mov ($s1 eq "ebx" ? $s1 : "",$key); 2102 &mov ($s2 eq "ecx" ? $s2 : "",244/4); 2103 &sub ($s1,$tbl); 2104 &mov ("esi",$key); 2105 &and ($s1,0xfff); 2106 &lea ("edi",$aes_key); 2107 &cmp ($s1,2048+256); 2108 &jb (&label("do_copy")); 2109 &cmp ($s1,4096-244); 2110 &jb (&label("skip_copy")); 2111 &set_label("do_copy",4); 2112 &mov ($_key,"edi"); 2113 &data_word(0xA5F3F689); # rep movsd 2114 &set_label("skip_copy"); 2115 2116 &mov ($key,16); 2117 &set_label("prefetch_tbl",4); 2118 &mov ($s0,&DWP(0,$tbl)); 2119 &mov ($s1,&DWP(32,$tbl)); 2120 &mov ($s2,&DWP(64,$tbl)); 2121 &mov ($acc,&DWP(96,$tbl)); 2122 &lea ($tbl,&DWP(128,$tbl)); 2123 &sub ($key,1); 2124 &jnz (&label("prefetch_tbl")); 2125 &sub ($tbl,2048); 2126 2127 &mov ($acc,$_inp); 2128 &mov ($key,$_ivp); 2129 2130 &cmp ($s3,0); 2131 &je (&label("fast_decrypt")); 2132 2133#----------------------------- ENCRYPT -----------------------------# 2134 &mov ($s0,&DWP(0,$key)); # load iv 2135 &mov ($s1,&DWP(4,$key)); 2136 2137 &set_label("fast_enc_loop",16); 2138 &mov ($s2,&DWP(8,$key)); 2139 &mov ($s3,&DWP(12,$key)); 2140 2141 &xor ($s0,&DWP(0,$acc)); # xor input data 2142 &xor ($s1,&DWP(4,$acc)); 2143 &xor ($s2,&DWP(8,$acc)); 2144 &xor ($s3,&DWP(12,$acc)); 2145 2146 &mov ($key,$_key); # load key 2147 &call ("_x86_AES_encrypt"); 2148 2149 &mov ($acc,$_inp); # load inp 2150 &mov ($key,$_out); # load out 2151 2152 &mov (&DWP(0,$key),$s0); # save output data 2153 &mov (&DWP(4,$key),$s1); 2154 &mov (&DWP(8,$key),$s2); 2155 &mov (&DWP(12,$key),$s3); 2156 2157 &lea ($acc,&DWP(16,$acc)); # advance inp 2158 &mov ($s2,$_len); # load len 2159 &mov ($_inp,$acc); # save inp 2160 &lea ($s3,&DWP(16,$key)); # advance out 2161 &mov ($_out,$s3); # save out 2162 &sub ($s2,16); # decrease len 2163 &mov ($_len,$s2); # save len 2164 &jnz (&label("fast_enc_loop")); 2165 &mov ($acc,$_ivp); # load ivp 2166 &mov ($s2,&DWP(8,$key)); # restore last 2 dwords 2167 &mov ($s3,&DWP(12,$key)); 2168 &mov (&DWP(0,$acc),$s0); # save ivec 2169 &mov (&DWP(4,$acc),$s1); 2170 &mov (&DWP(8,$acc),$s2); 2171 &mov (&DWP(12,$acc),$s3); 2172 2173 &cmp ($mark,0); # was the key schedule copied? 2174 &mov ("edi",$_key); 2175 &je (&label("skip_ezero")); 2176 # zero copy of key schedule 2177 &mov ("ecx",240/4); 2178 &xor ("eax","eax"); 2179 &align (4); 2180 &data_word(0xABF3F689); # rep stosd 2181 &set_label("skip_ezero") 2182 &mov ("esp",$_esp); 2183 &popf (); 2184 &set_label("drop_out"); 2185 &function_end_A(); 2186 &pushf (); # kludge, never executed 2187 2188#----------------------------- DECRYPT -----------------------------# 2189&set_label("fast_decrypt",16); 2190 2191 &cmp ($acc,$_out); 2192 &je (&label("fast_dec_in_place")); # in-place processing... 2193 2194 &mov ($_tmp,$key); 2195 2196 &align (4); 2197 &set_label("fast_dec_loop",16); 2198 &mov ($s0,&DWP(0,$acc)); # read input 2199 &mov ($s1,&DWP(4,$acc)); 2200 &mov ($s2,&DWP(8,$acc)); 2201 &mov ($s3,&DWP(12,$acc)); 2202 2203 &mov ($key,$_key); # load key 2204 &call ("_x86_AES_decrypt"); 2205 2206 &mov ($key,$_tmp); # load ivp 2207 &mov ($acc,$_len); # load len 2208 &xor ($s0,&DWP(0,$key)); # xor iv 2209 &xor ($s1,&DWP(4,$key)); 2210 &xor ($s2,&DWP(8,$key)); 2211 &xor ($s3,&DWP(12,$key)); 2212 2213 &mov ($key,$_out); # load out 2214 &mov ($acc,$_inp); # load inp 2215 2216 &mov (&DWP(0,$key),$s0); # write output 2217 &mov (&DWP(4,$key),$s1); 2218 &mov (&DWP(8,$key),$s2); 2219 &mov (&DWP(12,$key),$s3); 2220 2221 &mov ($s2,$_len); # load len 2222 &mov ($_tmp,$acc); # save ivp 2223 &lea ($acc,&DWP(16,$acc)); # advance inp 2224 &mov ($_inp,$acc); # save inp 2225 &lea ($key,&DWP(16,$key)); # advance out 2226 &mov ($_out,$key); # save out 2227 &sub ($s2,16); # decrease len 2228 &mov ($_len,$s2); # save len 2229 &jnz (&label("fast_dec_loop")); 2230 &mov ($key,$_tmp); # load temp ivp 2231 &mov ($acc,$_ivp); # load user ivp 2232 &mov ($s0,&DWP(0,$key)); # load iv 2233 &mov ($s1,&DWP(4,$key)); 2234 &mov ($s2,&DWP(8,$key)); 2235 &mov ($s3,&DWP(12,$key)); 2236 &mov (&DWP(0,$acc),$s0); # copy back to user 2237 &mov (&DWP(4,$acc),$s1); 2238 &mov (&DWP(8,$acc),$s2); 2239 &mov (&DWP(12,$acc),$s3); 2240 &jmp (&label("fast_dec_out")); 2241 2242 &set_label("fast_dec_in_place",16); 2243 &set_label("fast_dec_in_place_loop"); 2244 &mov ($s0,&DWP(0,$acc)); # read input 2245 &mov ($s1,&DWP(4,$acc)); 2246 &mov ($s2,&DWP(8,$acc)); 2247 &mov ($s3,&DWP(12,$acc)); 2248 2249 &lea ($key,$ivec); 2250 &mov (&DWP(0,$key),$s0); # copy to temp 2251 &mov (&DWP(4,$key),$s1); 2252 &mov (&DWP(8,$key),$s2); 2253 &mov (&DWP(12,$key),$s3); 2254 2255 &mov ($key,$_key); # load key 2256 &call ("_x86_AES_decrypt"); 2257 2258 &mov ($key,$_ivp); # load ivp 2259 &mov ($acc,$_out); # load out 2260 &xor ($s0,&DWP(0,$key)); # xor iv 2261 &xor ($s1,&DWP(4,$key)); 2262 &xor ($s2,&DWP(8,$key)); 2263 &xor ($s3,&DWP(12,$key)); 2264 2265 &mov (&DWP(0,$acc),$s0); # write output 2266 &mov (&DWP(4,$acc),$s1); 2267 &mov (&DWP(8,$acc),$s2); 2268 &mov (&DWP(12,$acc),$s3); 2269 2270 &lea ($acc,&DWP(16,$acc)); # advance out 2271 &mov ($_out,$acc); # save out 2272 2273 &lea ($acc,$ivec); 2274 &mov ($s0,&DWP(0,$acc)); # read temp 2275 &mov ($s1,&DWP(4,$acc)); 2276 &mov ($s2,&DWP(8,$acc)); 2277 &mov ($s3,&DWP(12,$acc)); 2278 2279 &mov (&DWP(0,$key),$s0); # copy iv 2280 &mov (&DWP(4,$key),$s1); 2281 &mov (&DWP(8,$key),$s2); 2282 &mov (&DWP(12,$key),$s3); 2283 2284 &mov ($acc,$_inp); # load inp 2285 &mov ($s2,$_len); # load len 2286 &lea ($acc,&DWP(16,$acc)); # advance inp 2287 &mov ($_inp,$acc); # save inp 2288 &sub ($s2,16); # decrease len 2289 &mov ($_len,$s2); # save len 2290 &jnz (&label("fast_dec_in_place_loop")); 2291 2292 &set_label("fast_dec_out",4); 2293 &cmp ($mark,0); # was the key schedule copied? 2294 &mov ("edi",$_key); 2295 &je (&label("skip_dzero")); 2296 # zero copy of key schedule 2297 &mov ("ecx",240/4); 2298 &xor ("eax","eax"); 2299 &align (4); 2300 &data_word(0xABF3F689); # rep stosd 2301 &set_label("skip_dzero") 2302 &mov ("esp",$_esp); 2303 &popf (); 2304 &function_end_A(); 2305 &pushf (); # kludge, never executed 2306 2307#--------------------------- SLOW ROUTINE ---------------------------# 2308&set_label("slow_way",16); 2309 2310 &mov ($s0,&DWP(0,$s0)) if (!$x86only);# load OPENSSL_ia32cap 2311 &mov ($key,&wparam(3)); # load key 2312 2313 # pre-allocate aligned stack frame... 2314 &lea ($acc,&DWP(-80,"esp")); 2315 &and ($acc,-64); 2316 2317 # ... and make sure it doesn't alias with $key modulo 1024 2318 &lea ($s1,&DWP(-80-63,$key)); 2319 &sub ($s1,$acc); 2320 &neg ($s1); 2321 &and ($s1,0x3C0); # modulo 1024, but aligned to cache-line 2322 &sub ($acc,$s1); 2323 2324 # pick S-box copy which can't overlap with stack frame or $key 2325 &lea ($s1,&DWP(768,$acc)); 2326 &sub ($s1,$tbl); 2327 &and ($s1,0x300); 2328 &lea ($tbl,&DWP(2048+128,$tbl,$s1)); 2329 2330 &lea ($s3,&wparam(0)); # pointer to parameter block 2331 2332 &exch ("esp",$acc); 2333 &add ("esp",4); # reserve for return address! 2334 &mov ($_tbl,$tbl); # save %ebp 2335 &mov ($_esp,$acc); # save %esp 2336 &mov ($_tmp,$s0); # save OPENSSL_ia32cap 2337 2338 &mov ($s0,&DWP(0,$s3)); # load inp 2339 &mov ($s1,&DWP(4,$s3)); # load out 2340 #&mov ($s2,&DWP(8,$s3)); # load len 2341 #&mov ($key,&DWP(12,$s3)); # load key 2342 &mov ($acc,&DWP(16,$s3)); # load ivp 2343 &mov ($s3,&DWP(20,$s3)); # load enc flag 2344 2345 &mov ($_inp,$s0); # save copy of inp 2346 &mov ($_out,$s1); # save copy of out 2347 &mov ($_len,$s2); # save copy of len 2348 &mov ($_key,$key); # save copy of key 2349 &mov ($_ivp,$acc); # save copy of ivp 2350 2351 &mov ($key,$acc); 2352 &mov ($acc,$s0); 2353 2354 &cmp ($s3,0); 2355 &je (&label("slow_decrypt")); 2356 2357#--------------------------- SLOW ENCRYPT ---------------------------# 2358 &cmp ($s2,16); 2359 &mov ($s3,$s1); 2360 &jb (&label("slow_enc_tail")); 2361 2362 if (!$x86only) { 2363 &bt ($_tmp,"\$IA32CAP_BIT0_SSE"); # check for SSE bit 2364 &jnc (&label("slow_enc_x86")); 2365 2366 &movq ("mm0",&QWP(0,$key)); # load iv 2367 &movq ("mm4",&QWP(8,$key)); 2368 2369 &set_label("slow_enc_loop_sse",16); 2370 &pxor ("mm0",&QWP(0,$acc)); # xor input data 2371 &pxor ("mm4",&QWP(8,$acc)); 2372 2373 &mov ($key,$_key); 2374 &call ("_sse_AES_encrypt_compact"); 2375 2376 &mov ($acc,$_inp); # load inp 2377 &mov ($key,$_out); # load out 2378 &mov ($s2,$_len); # load len 2379 2380 &movq (&QWP(0,$key),"mm0"); # save output data 2381 &movq (&QWP(8,$key),"mm4"); 2382 2383 &lea ($acc,&DWP(16,$acc)); # advance inp 2384 &mov ($_inp,$acc); # save inp 2385 &lea ($s3,&DWP(16,$key)); # advance out 2386 &mov ($_out,$s3); # save out 2387 &sub ($s2,16); # decrease len 2388 &cmp ($s2,16); 2389 &mov ($_len,$s2); # save len 2390 &jae (&label("slow_enc_loop_sse")); 2391 &test ($s2,15); 2392 &jnz (&label("slow_enc_tail")); 2393 &mov ($acc,$_ivp); # load ivp 2394 &movq (&QWP(0,$acc),"mm0"); # save ivec 2395 &movq (&QWP(8,$acc),"mm4"); 2396 &emms (); 2397 &mov ("esp",$_esp); 2398 &popf (); 2399 &function_end_A(); 2400 &pushf (); # kludge, never executed 2401 } 2402 &set_label("slow_enc_x86",16); 2403 &mov ($s0,&DWP(0,$key)); # load iv 2404 &mov ($s1,&DWP(4,$key)); 2405 2406 &set_label("slow_enc_loop_x86",4); 2407 &mov ($s2,&DWP(8,$key)); 2408 &mov ($s3,&DWP(12,$key)); 2409 2410 &xor ($s0,&DWP(0,$acc)); # xor input data 2411 &xor ($s1,&DWP(4,$acc)); 2412 &xor ($s2,&DWP(8,$acc)); 2413 &xor ($s3,&DWP(12,$acc)); 2414 2415 &mov ($key,$_key); # load key 2416 &call ("_x86_AES_encrypt_compact"); 2417 2418 &mov ($acc,$_inp); # load inp 2419 &mov ($key,$_out); # load out 2420 2421 &mov (&DWP(0,$key),$s0); # save output data 2422 &mov (&DWP(4,$key),$s1); 2423 &mov (&DWP(8,$key),$s2); 2424 &mov (&DWP(12,$key),$s3); 2425 2426 &mov ($s2,$_len); # load len 2427 &lea ($acc,&DWP(16,$acc)); # advance inp 2428 &mov ($_inp,$acc); # save inp 2429 &lea ($s3,&DWP(16,$key)); # advance out 2430 &mov ($_out,$s3); # save out 2431 &sub ($s2,16); # decrease len 2432 &cmp ($s2,16); 2433 &mov ($_len,$s2); # save len 2434 &jae (&label("slow_enc_loop_x86")); 2435 &test ($s2,15); 2436 &jnz (&label("slow_enc_tail")); 2437 &mov ($acc,$_ivp); # load ivp 2438 &mov ($s2,&DWP(8,$key)); # restore last dwords 2439 &mov ($s3,&DWP(12,$key)); 2440 &mov (&DWP(0,$acc),$s0); # save ivec 2441 &mov (&DWP(4,$acc),$s1); 2442 &mov (&DWP(8,$acc),$s2); 2443 &mov (&DWP(12,$acc),$s3); 2444 2445 &mov ("esp",$_esp); 2446 &popf (); 2447 &function_end_A(); 2448 &pushf (); # kludge, never executed 2449 2450 &set_label("slow_enc_tail",16); 2451 &emms () if (!$x86only); 2452 &mov ($key eq "edi"? $key:"",$s3); # load out to edi 2453 &mov ($s1,16); 2454 &sub ($s1,$s2); 2455 &cmp ($key,$acc eq "esi"? $acc:""); # compare with inp 2456 &je (&label("enc_in_place")); 2457 &align (4); 2458 &data_word(0xA4F3F689); # rep movsb # copy input 2459 &jmp (&label("enc_skip_in_place")); 2460 &set_label("enc_in_place"); 2461 &lea ($key,&DWP(0,$key,$s2)); 2462 &set_label("enc_skip_in_place"); 2463 &mov ($s2,$s1); 2464 &xor ($s0,$s0); 2465 &align (4); 2466 &data_word(0xAAF3F689); # rep stosb # zero tail 2467 2468 &mov ($key,$_ivp); # restore ivp 2469 &mov ($acc,$s3); # output as input 2470 &mov ($s0,&DWP(0,$key)); 2471 &mov ($s1,&DWP(4,$key)); 2472 &mov ($_len,16); # len=16 2473 &jmp (&label("slow_enc_loop_x86")); # one more spin... 2474 2475#--------------------------- SLOW DECRYPT ---------------------------# 2476&set_label("slow_decrypt",16); 2477 if (!$x86only) { 2478 &bt ($_tmp,"\$IA32CAP_BIT0_SSE"); # check for SSE bit 2479 &jnc (&label("slow_dec_loop_x86")); 2480 2481 &set_label("slow_dec_loop_sse",4); 2482 &movq ("mm0",&QWP(0,$acc)); # read input 2483 &movq ("mm4",&QWP(8,$acc)); 2484 2485 &mov ($key,$_key); 2486 &call ("_sse_AES_decrypt_compact"); 2487 2488 &mov ($acc,$_inp); # load inp 2489 &lea ($s0,$ivec); 2490 &mov ($s1,$_out); # load out 2491 &mov ($s2,$_len); # load len 2492 &mov ($key,$_ivp); # load ivp 2493 2494 &movq ("mm1",&QWP(0,$acc)); # re-read input 2495 &movq ("mm5",&QWP(8,$acc)); 2496 2497 &pxor ("mm0",&QWP(0,$key)); # xor iv 2498 &pxor ("mm4",&QWP(8,$key)); 2499 2500 &movq (&QWP(0,$key),"mm1"); # copy input to iv 2501 &movq (&QWP(8,$key),"mm5"); 2502 2503 &sub ($s2,16); # decrease len 2504 &jc (&label("slow_dec_partial_sse")); 2505 2506 &movq (&QWP(0,$s1),"mm0"); # write output 2507 &movq (&QWP(8,$s1),"mm4"); 2508 2509 &lea ($s1,&DWP(16,$s1)); # advance out 2510 &mov ($_out,$s1); # save out 2511 &lea ($acc,&DWP(16,$acc)); # advance inp 2512 &mov ($_inp,$acc); # save inp 2513 &mov ($_len,$s2); # save len 2514 &jnz (&label("slow_dec_loop_sse")); 2515 &emms (); 2516 &mov ("esp",$_esp); 2517 &popf (); 2518 &function_end_A(); 2519 &pushf (); # kludge, never executed 2520 2521 &set_label("slow_dec_partial_sse",16); 2522 &movq (&QWP(0,$s0),"mm0"); # save output to temp 2523 &movq (&QWP(8,$s0),"mm4"); 2524 &emms (); 2525 2526 &add ($s2 eq "ecx" ? "ecx":"",16); 2527 &mov ("edi",$s1); # out 2528 &mov ("esi",$s0); # temp 2529 &align (4); 2530 &data_word(0xA4F3F689); # rep movsb # copy partial output 2531 2532 &mov ("esp",$_esp); 2533 &popf (); 2534 &function_end_A(); 2535 &pushf (); # kludge, never executed 2536 } 2537 &set_label("slow_dec_loop_x86",16); 2538 &mov ($s0,&DWP(0,$acc)); # read input 2539 &mov ($s1,&DWP(4,$acc)); 2540 &mov ($s2,&DWP(8,$acc)); 2541 &mov ($s3,&DWP(12,$acc)); 2542 2543 &lea ($key,$ivec); 2544 &mov (&DWP(0,$key),$s0); # copy to temp 2545 &mov (&DWP(4,$key),$s1); 2546 &mov (&DWP(8,$key),$s2); 2547 &mov (&DWP(12,$key),$s3); 2548 2549 &mov ($key,$_key); # load key 2550 &call ("_x86_AES_decrypt_compact"); 2551 2552 &mov ($key,$_ivp); # load ivp 2553 &mov ($acc,$_len); # load len 2554 &xor ($s0,&DWP(0,$key)); # xor iv 2555 &xor ($s1,&DWP(4,$key)); 2556 &xor ($s2,&DWP(8,$key)); 2557 &xor ($s3,&DWP(12,$key)); 2558 2559 &sub ($acc,16); 2560 &jc (&label("slow_dec_partial_x86")); 2561 2562 &mov ($_len,$acc); # save len 2563 &mov ($acc,$_out); # load out 2564 2565 &mov (&DWP(0,$acc),$s0); # write output 2566 &mov (&DWP(4,$acc),$s1); 2567 &mov (&DWP(8,$acc),$s2); 2568 &mov (&DWP(12,$acc),$s3); 2569 2570 &lea ($acc,&DWP(16,$acc)); # advance out 2571 &mov ($_out,$acc); # save out 2572 2573 &lea ($acc,$ivec); 2574 &mov ($s0,&DWP(0,$acc)); # read temp 2575 &mov ($s1,&DWP(4,$acc)); 2576 &mov ($s2,&DWP(8,$acc)); 2577 &mov ($s3,&DWP(12,$acc)); 2578 2579 &mov (&DWP(0,$key),$s0); # copy it to iv 2580 &mov (&DWP(4,$key),$s1); 2581 &mov (&DWP(8,$key),$s2); 2582 &mov (&DWP(12,$key),$s3); 2583 2584 &mov ($acc,$_inp); # load inp 2585 &lea ($acc,&DWP(16,$acc)); # advance inp 2586 &mov ($_inp,$acc); # save inp 2587 &jnz (&label("slow_dec_loop_x86")); 2588 &mov ("esp",$_esp); 2589 &popf (); 2590 &function_end_A(); 2591 &pushf (); # kludge, never executed 2592 2593 &set_label("slow_dec_partial_x86",16); 2594 &lea ($acc,$ivec); 2595 &mov (&DWP(0,$acc),$s0); # save output to temp 2596 &mov (&DWP(4,$acc),$s1); 2597 &mov (&DWP(8,$acc),$s2); 2598 &mov (&DWP(12,$acc),$s3); 2599 2600 &mov ($acc,$_inp); 2601 &mov ($s0,&DWP(0,$acc)); # re-read input 2602 &mov ($s1,&DWP(4,$acc)); 2603 &mov ($s2,&DWP(8,$acc)); 2604 &mov ($s3,&DWP(12,$acc)); 2605 2606 &mov (&DWP(0,$key),$s0); # copy it to iv 2607 &mov (&DWP(4,$key),$s1); 2608 &mov (&DWP(8,$key),$s2); 2609 &mov (&DWP(12,$key),$s3); 2610 2611 &mov ("ecx",$_len); 2612 &mov ("edi",$_out); 2613 &lea ("esi",$ivec); 2614 &align (4); 2615 &data_word(0xA4F3F689); # rep movsb # copy partial output 2616 2617 &mov ("esp",$_esp); 2618 &popf (); 2619&function_end("aes_cbc_encrypt_internal"); 2620} 2621 2622#------------------------------------------------------------------# 2623 2624sub enckey() 2625{ 2626 &movz ("esi",&LB("edx")); # rk[i]>>0 2627 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2628 &movz ("esi",&HB("edx")); # rk[i]>>8 2629 &shl ("ebx",24); 2630 &xor ("eax","ebx"); 2631 2632 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2633 &shr ("edx",16); 2634 &movz ("esi",&LB("edx")); # rk[i]>>16 2635 &xor ("eax","ebx"); 2636 2637 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2638 &movz ("esi",&HB("edx")); # rk[i]>>24 2639 &shl ("ebx",8); 2640 &xor ("eax","ebx"); 2641 2642 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2643 &shl ("ebx",16); 2644 &xor ("eax","ebx"); 2645 2646 &xor ("eax",&DWP(1024-128,$tbl,"ecx",4)); # rcon 2647} 2648 2649&function_begin("_x86_AES_set_encrypt_key"); 2650 &mov ("esi",&wparam(1)); # user supplied key 2651 &mov ("edi",&wparam(3)); # private key schedule 2652 2653 &test ("esi",-1); 2654 &jz (&label("badpointer")); 2655 &test ("edi",-1); 2656 &jz (&label("badpointer")); 2657 2658 &picsetup($tbl); 2659 &picsymbol($tbl, &label("AES_Te"), $tbl); 2660 2661 &lea ($tbl,&DWP(2048+128,$tbl)); 2662 2663 # prefetch Te4 2664 &mov ("eax",&DWP(0-128,$tbl)); 2665 &mov ("ebx",&DWP(32-128,$tbl)); 2666 &mov ("ecx",&DWP(64-128,$tbl)); 2667 &mov ("edx",&DWP(96-128,$tbl)); 2668 &mov ("eax",&DWP(128-128,$tbl)); 2669 &mov ("ebx",&DWP(160-128,$tbl)); 2670 &mov ("ecx",&DWP(192-128,$tbl)); 2671 &mov ("edx",&DWP(224-128,$tbl)); 2672 2673 &mov ("ecx",&wparam(2)); # number of bits in key 2674 &cmp ("ecx",128); 2675 &je (&label("10rounds")); 2676 &cmp ("ecx",192); 2677 &je (&label("12rounds")); 2678 &cmp ("ecx",256); 2679 &je (&label("14rounds")); 2680 &mov ("eax",-2); # invalid number of bits 2681 &jmp (&label("exit")); 2682 2683 &set_label("10rounds"); 2684 &mov ("eax",&DWP(0,"esi")); # copy first 4 dwords 2685 &mov ("ebx",&DWP(4,"esi")); 2686 &mov ("ecx",&DWP(8,"esi")); 2687 &mov ("edx",&DWP(12,"esi")); 2688 &mov (&DWP(0,"edi"),"eax"); 2689 &mov (&DWP(4,"edi"),"ebx"); 2690 &mov (&DWP(8,"edi"),"ecx"); 2691 &mov (&DWP(12,"edi"),"edx"); 2692 2693 &xor ("ecx","ecx"); 2694 &jmp (&label("10shortcut")); 2695 2696 &align (4); 2697 &set_label("10loop"); 2698 &mov ("eax",&DWP(0,"edi")); # rk[0] 2699 &mov ("edx",&DWP(12,"edi")); # rk[3] 2700 &set_label("10shortcut"); 2701 &enckey (); 2702 2703 &mov (&DWP(16,"edi"),"eax"); # rk[4] 2704 &xor ("eax",&DWP(4,"edi")); 2705 &mov (&DWP(20,"edi"),"eax"); # rk[5] 2706 &xor ("eax",&DWP(8,"edi")); 2707 &mov (&DWP(24,"edi"),"eax"); # rk[6] 2708 &xor ("eax",&DWP(12,"edi")); 2709 &mov (&DWP(28,"edi"),"eax"); # rk[7] 2710 &inc ("ecx"); 2711 &add ("edi",16); 2712 &cmp ("ecx",10); 2713 &jl (&label("10loop")); 2714 2715 &mov (&DWP(80,"edi"),10); # setup number of rounds 2716 &xor ("eax","eax"); 2717 &jmp (&label("exit")); 2718 2719 &set_label("12rounds"); 2720 &mov ("eax",&DWP(0,"esi")); # copy first 6 dwords 2721 &mov ("ebx",&DWP(4,"esi")); 2722 &mov ("ecx",&DWP(8,"esi")); 2723 &mov ("edx",&DWP(12,"esi")); 2724 &mov (&DWP(0,"edi"),"eax"); 2725 &mov (&DWP(4,"edi"),"ebx"); 2726 &mov (&DWP(8,"edi"),"ecx"); 2727 &mov (&DWP(12,"edi"),"edx"); 2728 &mov ("ecx",&DWP(16,"esi")); 2729 &mov ("edx",&DWP(20,"esi")); 2730 &mov (&DWP(16,"edi"),"ecx"); 2731 &mov (&DWP(20,"edi"),"edx"); 2732 2733 &xor ("ecx","ecx"); 2734 &jmp (&label("12shortcut")); 2735 2736 &align (4); 2737 &set_label("12loop"); 2738 &mov ("eax",&DWP(0,"edi")); # rk[0] 2739 &mov ("edx",&DWP(20,"edi")); # rk[5] 2740 &set_label("12shortcut"); 2741 &enckey (); 2742 2743 &mov (&DWP(24,"edi"),"eax"); # rk[6] 2744 &xor ("eax",&DWP(4,"edi")); 2745 &mov (&DWP(28,"edi"),"eax"); # rk[7] 2746 &xor ("eax",&DWP(8,"edi")); 2747 &mov (&DWP(32,"edi"),"eax"); # rk[8] 2748 &xor ("eax",&DWP(12,"edi")); 2749 &mov (&DWP(36,"edi"),"eax"); # rk[9] 2750 2751 &cmp ("ecx",7); 2752 &je (&label("12break")); 2753 &inc ("ecx"); 2754 2755 &xor ("eax",&DWP(16,"edi")); 2756 &mov (&DWP(40,"edi"),"eax"); # rk[10] 2757 &xor ("eax",&DWP(20,"edi")); 2758 &mov (&DWP(44,"edi"),"eax"); # rk[11] 2759 2760 &add ("edi",24); 2761 &jmp (&label("12loop")); 2762 2763 &set_label("12break"); 2764 &mov (&DWP(72,"edi"),12); # setup number of rounds 2765 &xor ("eax","eax"); 2766 &jmp (&label("exit")); 2767 2768 &set_label("14rounds"); 2769 &mov ("eax",&DWP(0,"esi")); # copy first 8 dwords 2770 &mov ("ebx",&DWP(4,"esi")); 2771 &mov ("ecx",&DWP(8,"esi")); 2772 &mov ("edx",&DWP(12,"esi")); 2773 &mov (&DWP(0,"edi"),"eax"); 2774 &mov (&DWP(4,"edi"),"ebx"); 2775 &mov (&DWP(8,"edi"),"ecx"); 2776 &mov (&DWP(12,"edi"),"edx"); 2777 &mov ("eax",&DWP(16,"esi")); 2778 &mov ("ebx",&DWP(20,"esi")); 2779 &mov ("ecx",&DWP(24,"esi")); 2780 &mov ("edx",&DWP(28,"esi")); 2781 &mov (&DWP(16,"edi"),"eax"); 2782 &mov (&DWP(20,"edi"),"ebx"); 2783 &mov (&DWP(24,"edi"),"ecx"); 2784 &mov (&DWP(28,"edi"),"edx"); 2785 2786 &xor ("ecx","ecx"); 2787 &jmp (&label("14shortcut")); 2788 2789 &align (4); 2790 &set_label("14loop"); 2791 &mov ("edx",&DWP(28,"edi")); # rk[7] 2792 &set_label("14shortcut"); 2793 &mov ("eax",&DWP(0,"edi")); # rk[0] 2794 2795 &enckey (); 2796 2797 &mov (&DWP(32,"edi"),"eax"); # rk[8] 2798 &xor ("eax",&DWP(4,"edi")); 2799 &mov (&DWP(36,"edi"),"eax"); # rk[9] 2800 &xor ("eax",&DWP(8,"edi")); 2801 &mov (&DWP(40,"edi"),"eax"); # rk[10] 2802 &xor ("eax",&DWP(12,"edi")); 2803 &mov (&DWP(44,"edi"),"eax"); # rk[11] 2804 2805 &cmp ("ecx",6); 2806 &je (&label("14break")); 2807 &inc ("ecx"); 2808 2809 &mov ("edx","eax"); 2810 &mov ("eax",&DWP(16,"edi")); # rk[4] 2811 &movz ("esi",&LB("edx")); # rk[11]>>0 2812 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2813 &movz ("esi",&HB("edx")); # rk[11]>>8 2814 &xor ("eax","ebx"); 2815 2816 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2817 &shr ("edx",16); 2818 &shl ("ebx",8); 2819 &movz ("esi",&LB("edx")); # rk[11]>>16 2820 &xor ("eax","ebx"); 2821 2822 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2823 &movz ("esi",&HB("edx")); # rk[11]>>24 2824 &shl ("ebx",16); 2825 &xor ("eax","ebx"); 2826 2827 &movz ("ebx",&BP(-128,$tbl,"esi",1)); 2828 &shl ("ebx",24); 2829 &xor ("eax","ebx"); 2830 2831 &mov (&DWP(48,"edi"),"eax"); # rk[12] 2832 &xor ("eax",&DWP(20,"edi")); 2833 &mov (&DWP(52,"edi"),"eax"); # rk[13] 2834 &xor ("eax",&DWP(24,"edi")); 2835 &mov (&DWP(56,"edi"),"eax"); # rk[14] 2836 &xor ("eax",&DWP(28,"edi")); 2837 &mov (&DWP(60,"edi"),"eax"); # rk[15] 2838 2839 &add ("edi",32); 2840 &jmp (&label("14loop")); 2841 2842 &set_label("14break"); 2843 &mov (&DWP(48,"edi"),14); # setup number of rounds 2844 &xor ("eax","eax"); 2845 &jmp (&label("exit")); 2846 2847 &set_label("badpointer"); 2848 &mov ("eax",-1); 2849 &set_label("exit"); 2850&function_end("_x86_AES_set_encrypt_key"); 2851 2852# int aes_set_encrypt_key_internal(const unsigned char *userKey, const int bits, 2853# AES_KEY *key) 2854&function_begin_B("aes_set_encrypt_key_internal"); 2855 &call ("_x86_AES_set_encrypt_key"); 2856 &ret (); 2857&function_end_B("aes_set_encrypt_key_internal"); 2858 2859sub deckey() 2860{ my ($i,$key,$tp1,$tp2,$tp4,$tp8) = @_; 2861 my $tmp = $tbl; 2862 2863 &mov ($acc,$tp1); 2864 &and ($acc,0x80808080); 2865 &mov ($tmp,$acc); 2866 &shr ($tmp,7); 2867 &lea ($tp2,&DWP(0,$tp1,$tp1)); 2868 &sub ($acc,$tmp); 2869 &and ($tp2,0xfefefefe); 2870 &and ($acc,0x1b1b1b1b); 2871 &xor ($acc,$tp2); 2872 &mov ($tp2,$acc); 2873 2874 &and ($acc,0x80808080); 2875 &mov ($tmp,$acc); 2876 &shr ($tmp,7); 2877 &lea ($tp4,&DWP(0,$tp2,$tp2)); 2878 &sub ($acc,$tmp); 2879 &and ($tp4,0xfefefefe); 2880 &and ($acc,0x1b1b1b1b); 2881 &xor ($tp2,$tp1); # tp2^tp1 2882 &xor ($acc,$tp4); 2883 &mov ($tp4,$acc); 2884 2885 &and ($acc,0x80808080); 2886 &mov ($tmp,$acc); 2887 &shr ($tmp,7); 2888 &lea ($tp8,&DWP(0,$tp4,$tp4)); 2889 &xor ($tp4,$tp1); # tp4^tp1 2890 &sub ($acc,$tmp); 2891 &and ($tp8,0xfefefefe); 2892 &and ($acc,0x1b1b1b1b); 2893 &rotl ($tp1,8); # = ROTATE(tp1,8) 2894 &xor ($tp8,$acc); 2895 2896 &mov ($tmp,&DWP(4*($i+1),$key)); # modulo-scheduled load 2897 2898 &xor ($tp1,$tp2); 2899 &xor ($tp2,$tp8); 2900 &xor ($tp1,$tp4); 2901 &rotl ($tp2,24); 2902 &xor ($tp4,$tp8); 2903 &xor ($tp1,$tp8); # ^= tp8^(tp4^tp1)^(tp2^tp1) 2904 &rotl ($tp4,16); 2905 &xor ($tp1,$tp2); # ^= ROTATE(tp8^tp2^tp1,24) 2906 &rotl ($tp8,8); 2907 &xor ($tp1,$tp4); # ^= ROTATE(tp8^tp4^tp1,16) 2908 &mov ($tp2,$tmp); 2909 &xor ($tp1,$tp8); # ^= ROTATE(tp8,8) 2910 2911 &mov (&DWP(4*$i,$key),$tp1); 2912} 2913 2914# int aes_set_decrypt_key_internal(const unsigned char *userKey, const int bits, 2915# AES_KEY *key) 2916&function_begin_B("aes_set_decrypt_key_internal"); 2917 &call ("_x86_AES_set_encrypt_key"); 2918 &cmp ("eax",0); 2919 &je (&label("proceed")); 2920 &ret (); 2921 2922 &set_label("proceed"); 2923 &push ("ebp"); 2924 &push ("ebx"); 2925 &push ("esi"); 2926 &push ("edi"); 2927 2928 &mov ("esi",&wparam(2)); 2929 &mov ("ecx",&DWP(240,"esi")); # pull number of rounds 2930 &lea ("ecx",&DWP(0,"","ecx",4)); 2931 &lea ("edi",&DWP(0,"esi","ecx",4)); # pointer to last chunk 2932 2933 &set_label("invert",4); # invert order of chunks 2934 &mov ("eax",&DWP(0,"esi")); 2935 &mov ("ebx",&DWP(4,"esi")); 2936 &mov ("ecx",&DWP(0,"edi")); 2937 &mov ("edx",&DWP(4,"edi")); 2938 &mov (&DWP(0,"edi"),"eax"); 2939 &mov (&DWP(4,"edi"),"ebx"); 2940 &mov (&DWP(0,"esi"),"ecx"); 2941 &mov (&DWP(4,"esi"),"edx"); 2942 &mov ("eax",&DWP(8,"esi")); 2943 &mov ("ebx",&DWP(12,"esi")); 2944 &mov ("ecx",&DWP(8,"edi")); 2945 &mov ("edx",&DWP(12,"edi")); 2946 &mov (&DWP(8,"edi"),"eax"); 2947 &mov (&DWP(12,"edi"),"ebx"); 2948 &mov (&DWP(8,"esi"),"ecx"); 2949 &mov (&DWP(12,"esi"),"edx"); 2950 &add ("esi",16); 2951 &sub ("edi",16); 2952 &cmp ("esi","edi"); 2953 &jne (&label("invert")); 2954 2955 &mov ($key,&wparam(2)); 2956 &mov ($acc,&DWP(240,$key)); # pull number of rounds 2957 &lea ($acc,&DWP(-2,$acc,$acc)); 2958 &lea ($acc,&DWP(0,$key,$acc,8)); 2959 &mov (&wparam(2),$acc); 2960 2961 &mov ($s0,&DWP(16,$key)); # modulo-scheduled load 2962 &set_label("permute",4); # permute the key schedule 2963 &add ($key,16); 2964 &deckey (0,$key,$s0,$s1,$s2,$s3); 2965 &deckey (1,$key,$s1,$s2,$s3,$s0); 2966 &deckey (2,$key,$s2,$s3,$s0,$s1); 2967 &deckey (3,$key,$s3,$s0,$s1,$s2); 2968 &cmp ($key,&wparam(2)); 2969 &jb (&label("permute")); 2970 2971 &xor ("eax","eax"); # return success 2972&function_end("aes_set_decrypt_key_internal"); 2973 2974&asm_finish(); 2975