3 # The inner loop instruction sequence and the IP/FP modifications are from
4 # Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
7 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
8 push(@INC,"${dir}","${dir}../../perlasm");
13 # base code is in microsft
18 &asm_init($ARGV[0],"des-586.pl");
23 $small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
24 # one can discuss setting this variable to 1 unconditionally, as
25 # the folded loop is only 3% slower than unrolled, but >7 times smaller
27 &public_label("DES_SPtrans");
28 &static_label("des_sptrans");
30 &DES_encrypt_internal();
31 &DES_decrypt_internal();
32 &DES_encrypt("DES_encrypt1",1);
33 &DES_encrypt("DES_encrypt2",0);
34 &DES_encrypt3("DES_encrypt3",1);
35 &DES_encrypt3("DES_decrypt3",0);
36 &cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
37 &cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
42 sub DES_encrypt_internal()
44 &function_begin_B("_x86_DES_encrypt");
48 &lea("edx",&DWP(128,"ecx"));
52 &D_ENCRYPT(0,$L,$R,0,$trans,"eax","ebx","ecx","edx",&swtmp(0));
54 &D_ENCRYPT(1,$R,$L,2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
57 &cmp("ecx",&swtmp(1));
58 &mov(&swtmp(0),"ecx");
65 for ($i=0; $i<16; $i+=2)
68 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
69 &comment("Round ".sprintf("%d",$i+1));
70 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
76 &function_end_B("_x86_DES_encrypt");
79 sub DES_decrypt_internal()
81 &function_begin_B("_x86_DES_decrypt");
86 &lea("ecx",&DWP(128,"ecx"));
89 &D_ENCRYPT(0,$L,$R,-2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
91 &D_ENCRYPT(1,$R,$L,-4,$trans,"eax","ebx","ecx","edx",&swtmp(0));
94 &cmp("ecx",&swtmp(1));
95 &mov(&swtmp(0),"ecx");
102 for ($i=15; $i>0; $i-=2)
104 &comment("Round $i");
105 &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
106 &comment("Round ".sprintf("%d",$i-1));
107 &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
113 &function_end_B("_x86_DES_decrypt");
118 local($name,$do_ip)=@_;
120 &function_begin_B($name);
126 &comment("Load the 2 words");
131 &xor( "ecx", "ecx" );
136 &mov("eax",&DWP(0,$R,"",0));
137 &mov("ebx",&wparam(2)); # get encrypt flag
138 &mov($L,&DWP(4,$R,"",0));
141 &IP_new("eax",$L,$R,3);
145 &mov("eax",&wparam(0));
146 &xor( "ecx", "ecx" );
151 &mov($R,&DWP(0,"eax","",0));
152 &mov("ebx",&wparam(2)); # get encrypt flag
154 &mov($L,&DWP(4,"eax","",0));
159 &call (&label("pic_point"));
160 &set_label("pic_point");
162 &lea ($trans,&DWP(&label("des_sptrans")."-".&label("pic_point"),$trans));
164 &mov( "ecx", &wparam(1) );
167 &je(&label("decrypt"));
168 &call("_x86_DES_encrypt");
169 &jmp(&label("done"));
170 &set_label("decrypt");
171 &call("_x86_DES_decrypt");
178 &mov("edx",&wparam(0));
179 &FP_new($L,$R,"eax",3);
181 &mov(&DWP(0,"edx","",0),"eax");
182 &mov(&DWP(4,"edx","",0),$R);
189 &mov("eax",&wparam(0));
191 &mov(&DWP(0,"eax","",0),$L);
192 &mov(&DWP(4,"eax","",0),$R);
201 &function_end_B($name);
206 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
208 &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
210 &mov( $t, &DWP(&n2a(($S+1)*4),$tmp2,"",0));
214 &and( $u, "0xfcfcfcfc" );
215 &and( $t, "0xcfcfcfcf" );
216 &movb( &LB($tmp1), &LB($u) );
217 &movb( &LB($tmp2), &HB($u) );
219 &xor( $L, &DWP(" ",$trans,$tmp1,0));
220 &movb( &LB($tmp1), &LB($t) );
221 &xor( $L, &DWP("0x200",$trans,$tmp2,0));
222 &movb( &LB($tmp2), &HB($t) );
224 &xor( $L, &DWP("0x100",$trans,$tmp1,0));
225 &movb( &LB($tmp1), &HB($u) );
227 &xor( $L, &DWP("0x300",$trans,$tmp2,0));
228 &movb( &LB($tmp2), &HB($t) );
231 &xor( $L, &DWP("0x600",$trans,$tmp1,0));
232 &xor( $L, &DWP("0x700",$trans,$tmp2,0));
234 &xor( $L, &DWP("0x400",$trans,$u,0));
235 &xor( $L, &DWP("0x500",$trans,$t,0));
243 # now has a side affect of rotating $a by $shift
246 local($a,$b,$tt,$shift,$mask,$last)=@_;
248 &rotl( $a, $shift ) if ($shift != 0);
252 # This can never succeed, and besides it is difficult to see what the
253 # idea was - Ben 13 Feb 99
269 local($l,$r,$tt,$lr)=@_;
271 &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
272 &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
273 &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
274 &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
275 &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
280 { &rotr($tt, 3-$lr); }
281 else { &rotl($tt, $lr-3); }
286 { &rotr($r, 2-$lr); }
287 else { &rotl($r, $lr-2); }
293 local($l,$r,$tt,$lr)=@_;
298 { &rotl($r, 2-$lr); }
299 else { &rotr($r, $lr-2); }
304 { &rotl($l, 3-$lr); }
305 else { &rotr($l, $lr-3); }
308 &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
309 &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
310 &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
311 &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
312 &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
318 &set_label("DES_SPtrans",64);
319 &set_label("des_sptrans");
320 &data_word(0x02080800, 0x00080000, 0x02000002, 0x02080802);
321 &data_word(0x02000000, 0x00080802, 0x00080002, 0x02000002);
322 &data_word(0x00080802, 0x02080800, 0x02080000, 0x00000802);
323 &data_word(0x02000802, 0x02000000, 0x00000000, 0x00080002);
324 &data_word(0x00080000, 0x00000002, 0x02000800, 0x00080800);
325 &data_word(0x02080802, 0x02080000, 0x00000802, 0x02000800);
326 &data_word(0x00000002, 0x00000800, 0x00080800, 0x02080002);
327 &data_word(0x00000800, 0x02000802, 0x02080002, 0x00000000);
328 &data_word(0x00000000, 0x02080802, 0x02000800, 0x00080002);
329 &data_word(0x02080800, 0x00080000, 0x00000802, 0x02000800);
330 &data_word(0x02080002, 0x00000800, 0x00080800, 0x02000002);
331 &data_word(0x00080802, 0x00000002, 0x02000002, 0x02080000);
332 &data_word(0x02080802, 0x00080800, 0x02080000, 0x02000802);
333 &data_word(0x02000000, 0x00000802, 0x00080002, 0x00000000);
334 &data_word(0x00080000, 0x02000000, 0x02000802, 0x02080800);
335 &data_word(0x00000002, 0x02080002, 0x00000800, 0x00080802);
337 &data_word(0x40108010, 0x00000000, 0x00108000, 0x40100000);
338 &data_word(0x40000010, 0x00008010, 0x40008000, 0x00108000);
339 &data_word(0x00008000, 0x40100010, 0x00000010, 0x40008000);
340 &data_word(0x00100010, 0x40108000, 0x40100000, 0x00000010);
341 &data_word(0x00100000, 0x40008010, 0x40100010, 0x00008000);
342 &data_word(0x00108010, 0x40000000, 0x00000000, 0x00100010);
343 &data_word(0x40008010, 0x00108010, 0x40108000, 0x40000010);
344 &data_word(0x40000000, 0x00100000, 0x00008010, 0x40108010);
345 &data_word(0x00100010, 0x40108000, 0x40008000, 0x00108010);
346 &data_word(0x40108010, 0x00100010, 0x40000010, 0x00000000);
347 &data_word(0x40000000, 0x00008010, 0x00100000, 0x40100010);
348 &data_word(0x00008000, 0x40000000, 0x00108010, 0x40008010);
349 &data_word(0x40108000, 0x00008000, 0x00000000, 0x40000010);
350 &data_word(0x00000010, 0x40108010, 0x00108000, 0x40100000);
351 &data_word(0x40100010, 0x00100000, 0x00008010, 0x40008000);
352 &data_word(0x40008010, 0x00000010, 0x40100000, 0x00108000);
354 &data_word(0x04000001, 0x04040100, 0x00000100, 0x04000101);
355 &data_word(0x00040001, 0x04000000, 0x04000101, 0x00040100);
356 &data_word(0x04000100, 0x00040000, 0x04040000, 0x00000001);
357 &data_word(0x04040101, 0x00000101, 0x00000001, 0x04040001);
358 &data_word(0x00000000, 0x00040001, 0x04040100, 0x00000100);
359 &data_word(0x00000101, 0x04040101, 0x00040000, 0x04000001);
360 &data_word(0x04040001, 0x04000100, 0x00040101, 0x04040000);
361 &data_word(0x00040100, 0x00000000, 0x04000000, 0x00040101);
362 &data_word(0x04040100, 0x00000100, 0x00000001, 0x00040000);
363 &data_word(0x00000101, 0x00040001, 0x04040000, 0x04000101);
364 &data_word(0x00000000, 0x04040100, 0x00040100, 0x04040001);
365 &data_word(0x00040001, 0x04000000, 0x04040101, 0x00000001);
366 &data_word(0x00040101, 0x04000001, 0x04000000, 0x04040101);
367 &data_word(0x00040000, 0x04000100, 0x04000101, 0x00040100);
368 &data_word(0x04000100, 0x00000000, 0x04040001, 0x00000101);
369 &data_word(0x04000001, 0x00040101, 0x00000100, 0x04040000);
371 &data_word(0x00401008, 0x10001000, 0x00000008, 0x10401008);
372 &data_word(0x00000000, 0x10400000, 0x10001008, 0x00400008);
373 &data_word(0x10401000, 0x10000008, 0x10000000, 0x00001008);
374 &data_word(0x10000008, 0x00401008, 0x00400000, 0x10000000);
375 &data_word(0x10400008, 0x00401000, 0x00001000, 0x00000008);
376 &data_word(0x00401000, 0x10001008, 0x10400000, 0x00001000);
377 &data_word(0x00001008, 0x00000000, 0x00400008, 0x10401000);
378 &data_word(0x10001000, 0x10400008, 0x10401008, 0x00400000);
379 &data_word(0x10400008, 0x00001008, 0x00400000, 0x10000008);
380 &data_word(0x00401000, 0x10001000, 0x00000008, 0x10400000);
381 &data_word(0x10001008, 0x00000000, 0x00001000, 0x00400008);
382 &data_word(0x00000000, 0x10400008, 0x10401000, 0x00001000);
383 &data_word(0x10000000, 0x10401008, 0x00401008, 0x00400000);
384 &data_word(0x10401008, 0x00000008, 0x10001000, 0x00401008);
385 &data_word(0x00400008, 0x00401000, 0x10400000, 0x10001008);
386 &data_word(0x00001008, 0x10000000, 0x10000008, 0x10401000);
388 &data_word(0x08000000, 0x00010000, 0x00000400, 0x08010420);
389 &data_word(0x08010020, 0x08000400, 0x00010420, 0x08010000);
390 &data_word(0x00010000, 0x00000020, 0x08000020, 0x00010400);
391 &data_word(0x08000420, 0x08010020, 0x08010400, 0x00000000);
392 &data_word(0x00010400, 0x08000000, 0x00010020, 0x00000420);
393 &data_word(0x08000400, 0x00010420, 0x00000000, 0x08000020);
394 &data_word(0x00000020, 0x08000420, 0x08010420, 0x00010020);
395 &data_word(0x08010000, 0x00000400, 0x00000420, 0x08010400);
396 &data_word(0x08010400, 0x08000420, 0x00010020, 0x08010000);
397 &data_word(0x00010000, 0x00000020, 0x08000020, 0x08000400);
398 &data_word(0x08000000, 0x00010400, 0x08010420, 0x00000000);
399 &data_word(0x00010420, 0x08000000, 0x00000400, 0x00010020);
400 &data_word(0x08000420, 0x00000400, 0x00000000, 0x08010420);
401 &data_word(0x08010020, 0x08010400, 0x00000420, 0x00010000);
402 &data_word(0x00010400, 0x08010020, 0x08000400, 0x00000420);
403 &data_word(0x00000020, 0x00010420, 0x08010000, 0x08000020);
405 &data_word(0x80000040, 0x00200040, 0x00000000, 0x80202000);
406 &data_word(0x00200040, 0x00002000, 0x80002040, 0x00200000);
407 &data_word(0x00002040, 0x80202040, 0x00202000, 0x80000000);
408 &data_word(0x80002000, 0x80000040, 0x80200000, 0x00202040);
409 &data_word(0x00200000, 0x80002040, 0x80200040, 0x00000000);
410 &data_word(0x00002000, 0x00000040, 0x80202000, 0x80200040);
411 &data_word(0x80202040, 0x80200000, 0x80000000, 0x00002040);
412 &data_word(0x00000040, 0x00202000, 0x00202040, 0x80002000);
413 &data_word(0x00002040, 0x80000000, 0x80002000, 0x00202040);
414 &data_word(0x80202000, 0x00200040, 0x00000000, 0x80002000);
415 &data_word(0x80000000, 0x00002000, 0x80200040, 0x00200000);
416 &data_word(0x00200040, 0x80202040, 0x00202000, 0x00000040);
417 &data_word(0x80202040, 0x00202000, 0x00200000, 0x80002040);
418 &data_word(0x80000040, 0x80200000, 0x00202040, 0x00000000);
419 &data_word(0x00002000, 0x80000040, 0x80002040, 0x80202000);
420 &data_word(0x80200000, 0x00002040, 0x00000040, 0x80200040);
422 &data_word(0x00004000, 0x00000200, 0x01000200, 0x01000004);
423 &data_word(0x01004204, 0x00004004, 0x00004200, 0x00000000);
424 &data_word(0x01000000, 0x01000204, 0x00000204, 0x01004000);
425 &data_word(0x00000004, 0x01004200, 0x01004000, 0x00000204);
426 &data_word(0x01000204, 0x00004000, 0x00004004, 0x01004204);
427 &data_word(0x00000000, 0x01000200, 0x01000004, 0x00004200);
428 &data_word(0x01004004, 0x00004204, 0x01004200, 0x00000004);
429 &data_word(0x00004204, 0x01004004, 0x00000200, 0x01000000);
430 &data_word(0x00004204, 0x01004000, 0x01004004, 0x00000204);
431 &data_word(0x00004000, 0x00000200, 0x01000000, 0x01004004);
432 &data_word(0x01000204, 0x00004204, 0x00004200, 0x00000000);
433 &data_word(0x00000200, 0x01000004, 0x00000004, 0x01000200);
434 &data_word(0x00000000, 0x01000204, 0x01000200, 0x00004200);
435 &data_word(0x00000204, 0x00004000, 0x01004204, 0x01000000);
436 &data_word(0x01004200, 0x00000004, 0x00004004, 0x01004204);
437 &data_word(0x01000004, 0x01004200, 0x01004000, 0x00004004);
439 &data_word(0x20800080, 0x20820000, 0x00020080, 0x00000000);
440 &data_word(0x20020000, 0x00800080, 0x20800000, 0x20820080);
441 &data_word(0x00000080, 0x20000000, 0x00820000, 0x00020080);
442 &data_word(0x00820080, 0x20020080, 0x20000080, 0x20800000);
443 &data_word(0x00020000, 0x00820080, 0x00800080, 0x20020000);
444 &data_word(0x20820080, 0x20000080, 0x00000000, 0x00820000);
445 &data_word(0x20000000, 0x00800000, 0x20020080, 0x20800080);
446 &data_word(0x00800000, 0x00020000, 0x20820000, 0x00000080);
447 &data_word(0x00800000, 0x00020000, 0x20000080, 0x20820080);
448 &data_word(0x00020080, 0x20000000, 0x00000000, 0x00820000);
449 &data_word(0x20800080, 0x20020080, 0x20020000, 0x00800080);
450 &data_word(0x20820000, 0x00000080, 0x00800080, 0x20020000);
451 &data_word(0x20820080, 0x00800000, 0x20800000, 0x20000080);
452 &data_word(0x00820000, 0x00020080, 0x20020080, 0x20800000);
453 &data_word(0x00000080, 0x20820000, 0x00820080, 0x00000000);
454 &data_word(0x20000000, 0x20800080, 0x00020000, 0x00820080);