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 $small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
24 # one can discuss setting this variable to 1 unconditionally, as
25 # the folded loop is only 3% slower than unrolled, but >7 times smaller
27 &DES_encrypt_internal();
28 &DES_decrypt_internal();
29 &DES_encrypt("DES_encrypt1",1);
30 &DES_encrypt("DES_encrypt2",0);
31 &DES_encrypt3("DES_encrypt3",1);
32 &DES_encrypt3("DES_decrypt3",0);
33 &cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
34 &cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
39 sub DES_encrypt_internal()
41 &function_begin_B("_x86_DES_encrypt");
45 &lea("edx",&DWP(128,"ecx"));
49 &D_ENCRYPT(0,$L,$R,0,$trans,"eax","ebx","ecx","edx",&swtmp(0));
51 &D_ENCRYPT(1,$R,$L,2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
54 &cmp("ecx",&swtmp(1));
55 &mov(&swtmp(0),"ecx");
62 for ($i=0; $i<16; $i+=2)
65 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
66 &comment("Round ".sprintf("%d",$i+1));
67 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
73 &function_end_B("_x86_DES_encrypt");
76 sub DES_decrypt_internal()
78 &function_begin_B("_x86_DES_decrypt");
83 &lea("ecx",&DWP(128,"ecx"));
86 &D_ENCRYPT(0,$L,$R,-2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
88 &D_ENCRYPT(1,$R,$L,-4,$trans,"eax","ebx","ecx","edx",&swtmp(0));
91 &cmp("ecx",&swtmp(1));
92 &mov(&swtmp(0),"ecx");
99 for ($i=15; $i>0; $i-=2)
101 &comment("Round $i");
102 &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
103 &comment("Round ".sprintf("%d",$i-1));
104 &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
110 &function_end_B("_x86_DES_decrypt");
115 local($name,$do_ip)=@_;
117 &function_begin_B($name);
123 &comment("Load the 2 words");
128 &xor( "ecx", "ecx" );
133 &mov("eax",&DWP(0,$R,"",0));
134 &mov("ebx",&wparam(2)); # get encrypt flag
135 &mov($L,&DWP(4,$R,"",0));
138 &IP_new("eax",$L,$R,3);
142 &mov("eax",&wparam(0));
143 &xor( "ecx", "ecx" );
148 &mov($R,&DWP(0,"eax","",0));
149 &mov("ebx",&wparam(2)); # get encrypt flag
151 &mov($L,&DWP(4,"eax","",0));
156 &picmeup($trans,"DES_SPtrans");
158 &mov( "ecx", &wparam(1) );
161 &je(&label("decrypt"));
162 &call("_x86_DES_encrypt");
163 &jmp(&label("done"));
164 &set_label("decrypt");
165 &call("_x86_DES_decrypt");
172 &mov("edx",&wparam(0));
173 &FP_new($L,$R,"eax",3);
175 &mov(&DWP(0,"edx","",0),"eax");
176 &mov(&DWP(4,"edx","",0),$R);
183 &mov("eax",&wparam(0));
185 &mov(&DWP(0,"eax","",0),$L);
186 &mov(&DWP(4,"eax","",0),$R);
195 &function_end_B($name);
200 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
202 &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
204 &mov( $t, &DWP(&n2a(($S+1)*4),$tmp2,"",0));
208 &and( $u, "0xfcfcfcfc" );
209 &and( $t, "0xcfcfcfcf" );
210 &movb( &LB($tmp1), &LB($u) );
211 &movb( &LB($tmp2), &HB($u) );
213 &xor( $L, &DWP(" ",$trans,$tmp1,0));
214 &movb( &LB($tmp1), &LB($t) );
215 &xor( $L, &DWP("0x200",$trans,$tmp2,0));
216 &movb( &LB($tmp2), &HB($t) );
218 &xor( $L, &DWP("0x100",$trans,$tmp1,0));
219 &movb( &LB($tmp1), &HB($u) );
221 &xor( $L, &DWP("0x300",$trans,$tmp2,0));
222 &movb( &LB($tmp2), &HB($t) );
225 &xor( $L, &DWP("0x600",$trans,$tmp1,0));
226 &xor( $L, &DWP("0x700",$trans,$tmp2,0));
228 &xor( $L, &DWP("0x400",$trans,$u,0));
229 &xor( $L, &DWP("0x500",$trans,$t,0));
237 # now has a side affect of rotating $a by $shift
240 local($a,$b,$tt,$shift,$mask,$last)=@_;
242 &rotl( $a, $shift ) if ($shift != 0);
246 # This can never succeed, and besides it is difficult to see what the
247 # idea was - Ben 13 Feb 99
263 local($l,$r,$tt,$lr)=@_;
265 &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
266 &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
267 &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
268 &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
269 &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
274 { &rotr($tt, 3-$lr); }
275 else { &rotl($tt, $lr-3); }
280 { &rotr($r, 2-$lr); }
281 else { &rotl($r, $lr-2); }
287 local($l,$r,$tt,$lr)=@_;
292 { &rotl($r, 2-$lr); }
293 else { &rotr($r, $lr-2); }
298 { &rotl($l, 3-$lr); }
299 else { &rotr($l, $lr-3); }
302 &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
303 &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
304 &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
305 &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
306 &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
312 &public_label("DES_SPtrans");
313 &set_label("DES_SPtrans",64);
314 &data_word(0x02080800, 0x00080000, 0x02000002, 0x02080802);
315 &data_word(0x02000000, 0x00080802, 0x00080002, 0x02000002);
316 &data_word(0x00080802, 0x02080800, 0x02080000, 0x00000802);
317 &data_word(0x02000802, 0x02000000, 0x00000000, 0x00080002);
318 &data_word(0x00080000, 0x00000002, 0x02000800, 0x00080800);
319 &data_word(0x02080802, 0x02080000, 0x00000802, 0x02000800);
320 &data_word(0x00000002, 0x00000800, 0x00080800, 0x02080002);
321 &data_word(0x00000800, 0x02000802, 0x02080002, 0x00000000);
322 &data_word(0x00000000, 0x02080802, 0x02000800, 0x00080002);
323 &data_word(0x02080800, 0x00080000, 0x00000802, 0x02000800);
324 &data_word(0x02080002, 0x00000800, 0x00080800, 0x02000002);
325 &data_word(0x00080802, 0x00000002, 0x02000002, 0x02080000);
326 &data_word(0x02080802, 0x00080800, 0x02080000, 0x02000802);
327 &data_word(0x02000000, 0x00000802, 0x00080002, 0x00000000);
328 &data_word(0x00080000, 0x02000000, 0x02000802, 0x02080800);
329 &data_word(0x00000002, 0x02080002, 0x00000800, 0x00080802);
331 &data_word(0x40108010, 0x00000000, 0x00108000, 0x40100000);
332 &data_word(0x40000010, 0x00008010, 0x40008000, 0x00108000);
333 &data_word(0x00008000, 0x40100010, 0x00000010, 0x40008000);
334 &data_word(0x00100010, 0x40108000, 0x40100000, 0x00000010);
335 &data_word(0x00100000, 0x40008010, 0x40100010, 0x00008000);
336 &data_word(0x00108010, 0x40000000, 0x00000000, 0x00100010);
337 &data_word(0x40008010, 0x00108010, 0x40108000, 0x40000010);
338 &data_word(0x40000000, 0x00100000, 0x00008010, 0x40108010);
339 &data_word(0x00100010, 0x40108000, 0x40008000, 0x00108010);
340 &data_word(0x40108010, 0x00100010, 0x40000010, 0x00000000);
341 &data_word(0x40000000, 0x00008010, 0x00100000, 0x40100010);
342 &data_word(0x00008000, 0x40000000, 0x00108010, 0x40008010);
343 &data_word(0x40108000, 0x00008000, 0x00000000, 0x40000010);
344 &data_word(0x00000010, 0x40108010, 0x00108000, 0x40100000);
345 &data_word(0x40100010, 0x00100000, 0x00008010, 0x40008000);
346 &data_word(0x40008010, 0x00000010, 0x40100000, 0x00108000);
348 &data_word(0x04000001, 0x04040100, 0x00000100, 0x04000101);
349 &data_word(0x00040001, 0x04000000, 0x04000101, 0x00040100);
350 &data_word(0x04000100, 0x00040000, 0x04040000, 0x00000001);
351 &data_word(0x04040101, 0x00000101, 0x00000001, 0x04040001);
352 &data_word(0x00000000, 0x00040001, 0x04040100, 0x00000100);
353 &data_word(0x00000101, 0x04040101, 0x00040000, 0x04000001);
354 &data_word(0x04040001, 0x04000100, 0x00040101, 0x04040000);
355 &data_word(0x00040100, 0x00000000, 0x04000000, 0x00040101);
356 &data_word(0x04040100, 0x00000100, 0x00000001, 0x00040000);
357 &data_word(0x00000101, 0x00040001, 0x04040000, 0x04000101);
358 &data_word(0x00000000, 0x04040100, 0x00040100, 0x04040001);
359 &data_word(0x00040001, 0x04000000, 0x04040101, 0x00000001);
360 &data_word(0x00040101, 0x04000001, 0x04000000, 0x04040101);
361 &data_word(0x00040000, 0x04000100, 0x04000101, 0x00040100);
362 &data_word(0x04000100, 0x00000000, 0x04040001, 0x00000101);
363 &data_word(0x04000001, 0x00040101, 0x00000100, 0x04040000);
365 &data_word(0x00401008, 0x10001000, 0x00000008, 0x10401008);
366 &data_word(0x00000000, 0x10400000, 0x10001008, 0x00400008);
367 &data_word(0x10401000, 0x10000008, 0x10000000, 0x00001008);
368 &data_word(0x10000008, 0x00401008, 0x00400000, 0x10000000);
369 &data_word(0x10400008, 0x00401000, 0x00001000, 0x00000008);
370 &data_word(0x00401000, 0x10001008, 0x10400000, 0x00001000);
371 &data_word(0x00001008, 0x00000000, 0x00400008, 0x10401000);
372 &data_word(0x10001000, 0x10400008, 0x10401008, 0x00400000);
373 &data_word(0x10400008, 0x00001008, 0x00400000, 0x10000008);
374 &data_word(0x00401000, 0x10001000, 0x00000008, 0x10400000);
375 &data_word(0x10001008, 0x00000000, 0x00001000, 0x00400008);
376 &data_word(0x00000000, 0x10400008, 0x10401000, 0x00001000);
377 &data_word(0x10000000, 0x10401008, 0x00401008, 0x00400000);
378 &data_word(0x10401008, 0x00000008, 0x10001000, 0x00401008);
379 &data_word(0x00400008, 0x00401000, 0x10400000, 0x10001008);
380 &data_word(0x00001008, 0x10000000, 0x10000008, 0x10401000);
382 &data_word(0x08000000, 0x00010000, 0x00000400, 0x08010420);
383 &data_word(0x08010020, 0x08000400, 0x00010420, 0x08010000);
384 &data_word(0x00010000, 0x00000020, 0x08000020, 0x00010400);
385 &data_word(0x08000420, 0x08010020, 0x08010400, 0x00000000);
386 &data_word(0x00010400, 0x08000000, 0x00010020, 0x00000420);
387 &data_word(0x08000400, 0x00010420, 0x00000000, 0x08000020);
388 &data_word(0x00000020, 0x08000420, 0x08010420, 0x00010020);
389 &data_word(0x08010000, 0x00000400, 0x00000420, 0x08010400);
390 &data_word(0x08010400, 0x08000420, 0x00010020, 0x08010000);
391 &data_word(0x00010000, 0x00000020, 0x08000020, 0x08000400);
392 &data_word(0x08000000, 0x00010400, 0x08010420, 0x00000000);
393 &data_word(0x00010420, 0x08000000, 0x00000400, 0x00010020);
394 &data_word(0x08000420, 0x00000400, 0x00000000, 0x08010420);
395 &data_word(0x08010020, 0x08010400, 0x00000420, 0x00010000);
396 &data_word(0x00010400, 0x08010020, 0x08000400, 0x00000420);
397 &data_word(0x00000020, 0x00010420, 0x08010000, 0x08000020);
399 &data_word(0x80000040, 0x00200040, 0x00000000, 0x80202000);
400 &data_word(0x00200040, 0x00002000, 0x80002040, 0x00200000);
401 &data_word(0x00002040, 0x80202040, 0x00202000, 0x80000000);
402 &data_word(0x80002000, 0x80000040, 0x80200000, 0x00202040);
403 &data_word(0x00200000, 0x80002040, 0x80200040, 0x00000000);
404 &data_word(0x00002000, 0x00000040, 0x80202000, 0x80200040);
405 &data_word(0x80202040, 0x80200000, 0x80000000, 0x00002040);
406 &data_word(0x00000040, 0x00202000, 0x00202040, 0x80002000);
407 &data_word(0x00002040, 0x80000000, 0x80002000, 0x00202040);
408 &data_word(0x80202000, 0x00200040, 0x00000000, 0x80002000);
409 &data_word(0x80000000, 0x00002000, 0x80200040, 0x00200000);
410 &data_word(0x00200040, 0x80202040, 0x00202000, 0x00000040);
411 &data_word(0x80202040, 0x00202000, 0x00200000, 0x80002040);
412 &data_word(0x80000040, 0x80200000, 0x00202040, 0x00000000);
413 &data_word(0x00002000, 0x80000040, 0x80002040, 0x80202000);
414 &data_word(0x80200000, 0x00002040, 0x00000040, 0x80200040);
416 &data_word(0x00004000, 0x00000200, 0x01000200, 0x01000004);
417 &data_word(0x01004204, 0x00004004, 0x00004200, 0x00000000);
418 &data_word(0x01000000, 0x01000204, 0x00000204, 0x01004000);
419 &data_word(0x00000004, 0x01004200, 0x01004000, 0x00000204);
420 &data_word(0x01000204, 0x00004000, 0x00004004, 0x01004204);
421 &data_word(0x00000000, 0x01000200, 0x01000004, 0x00004200);
422 &data_word(0x01004004, 0x00004204, 0x01004200, 0x00000004);
423 &data_word(0x00004204, 0x01004004, 0x00000200, 0x01000000);
424 &data_word(0x00004204, 0x01004000, 0x01004004, 0x00000204);
425 &data_word(0x00004000, 0x00000200, 0x01000000, 0x01004004);
426 &data_word(0x01000204, 0x00004204, 0x00004200, 0x00000000);
427 &data_word(0x00000200, 0x01000004, 0x00000004, 0x01000200);
428 &data_word(0x00000000, 0x01000204, 0x01000200, 0x00004200);
429 &data_word(0x00000204, 0x00004000, 0x01004204, 0x01000000);
430 &data_word(0x01004200, 0x00000004, 0x00004004, 0x01004204);
431 &data_word(0x01000004, 0x01004200, 0x01004000, 0x00004004);
433 &data_word(0x20800080, 0x20820000, 0x00020080, 0x00000000);
434 &data_word(0x20020000, 0x00800080, 0x20800000, 0x20820080);
435 &data_word(0x00000080, 0x20000000, 0x00820000, 0x00020080);
436 &data_word(0x00820080, 0x20020080, 0x20000080, 0x20800000);
437 &data_word(0x00020000, 0x00820080, 0x00800080, 0x20020000);
438 &data_word(0x20820080, 0x20000080, 0x00000000, 0x00820000);
439 &data_word(0x20000000, 0x00800000, 0x20020080, 0x20800080);
440 &data_word(0x00800000, 0x00020000, 0x20820000, 0x00000080);
441 &data_word(0x00800000, 0x00020000, 0x20000080, 0x20820080);
442 &data_word(0x00020080, 0x20000000, 0x00000000, 0x00820000);
443 &data_word(0x20800080, 0x20020080, 0x20020000, 0x00800080);
444 &data_word(0x20820000, 0x00000080, 0x00800080, 0x20020000);
445 &data_word(0x20820080, 0x00800000, 0x20800000, 0x20000080);
446 &data_word(0x00820000, 0x00020080, 0x20020080, 0x20800000);
447 &data_word(0x00000080, 0x20820000, 0x00820080, 0x00000000);
448 &data_word(0x20000000, 0x20800080, 0x00020000, 0x00820080);