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authordjm <>2010-10-01 22:59:01 +0000
committerdjm <>2010-10-01 22:59:01 +0000
commitfe047d8b632246cb2db3234a0a4f32e5c318857b (patch)
tree939b752540947d33507b3acc48d76a8bfb7c3dc3 /src/lib/libcrypto/des/asm
parent2ea67f4aa254b09ded62e6e14fc893bbe6381579 (diff)
downloadopenbsd-fe047d8b632246cb2db3234a0a4f32e5c318857b.tar.gz
openbsd-fe047d8b632246cb2db3234a0a4f32e5c318857b.tar.bz2
openbsd-fe047d8b632246cb2db3234a0a4f32e5c318857b.zip
resolve conflicts, fix local changes
Diffstat (limited to 'src/lib/libcrypto/des/asm')
-rw-r--r--src/lib/libcrypto/des/asm/crypt586.pl5
-rw-r--r--src/lib/libcrypto/des/asm/des-586.pl282
-rw-r--r--src/lib/libcrypto/des/asm/des686.pl230
3 files changed, 243 insertions, 274 deletions
diff --git a/src/lib/libcrypto/des/asm/crypt586.pl b/src/lib/libcrypto/des/asm/crypt586.pl
index 1d04ed6def..e36f7d44bd 100644
--- a/src/lib/libcrypto/des/asm/crypt586.pl
+++ b/src/lib/libcrypto/des/asm/crypt586.pl
@@ -6,7 +6,8 @@
6# things perfect. 6# things perfect.
7# 7#
8 8
9push(@INC,"perlasm","../../perlasm"); 9$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
10push(@INC,"${dir}","${dir}../../perlasm");
10require "x86asm.pl"; 11require "x86asm.pl";
11 12
12&asm_init($ARGV[0],"crypt586.pl"); 13&asm_init($ARGV[0],"crypt586.pl");
@@ -22,7 +23,7 @@ sub fcrypt_body
22 { 23 {
23 local($name,$do_ip)=@_; 24 local($name,$do_ip)=@_;
24 25
25 &function_begin($name,"EXTRN _DES_SPtrans:DWORD"); 26 &function_begin($name);
26 27
27 &comment(""); 28 &comment("");
28 &comment("Load the 2 words"); 29 &comment("Load the 2 words");
diff --git a/src/lib/libcrypto/des/asm/des-586.pl b/src/lib/libcrypto/des/asm/des-586.pl
index 60d577cc8d..5b5f39cebd 100644
--- a/src/lib/libcrypto/des/asm/des-586.pl
+++ b/src/lib/libcrypto/des/asm/des-586.pl
@@ -4,7 +4,8 @@
4# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk> 4# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
5# 5#
6 6
7push(@INC,"perlasm","../../perlasm"); 7$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
8push(@INC,"${dir}","${dir}../../perlasm");
8require "x86asm.pl"; 9require "x86asm.pl";
9require "cbc.pl"; 10require "cbc.pl";
10require "desboth.pl"; 11require "desboth.pl";
@@ -18,33 +19,110 @@ require "desboth.pl";
18 19
19$L="edi"; 20$L="edi";
20$R="esi"; 21$R="esi";
22$trans="ebp";
23$small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
24# one can discuss setting this variable to 1 unconditionally, as
25# the folded loop is only 3% slower than unrolled, but >7 times smaller
21 26
22&external_label("DES_SPtrans"); 27&public_label("DES_SPtrans");
28
29&DES_encrypt_internal();
30&DES_decrypt_internal();
23&DES_encrypt("DES_encrypt1",1); 31&DES_encrypt("DES_encrypt1",1);
24&DES_encrypt("DES_encrypt2",0); 32&DES_encrypt("DES_encrypt2",0);
33&DES_encrypt3("DES_encrypt3",1);
34&DES_encrypt3("DES_decrypt3",0);
35&cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
36&cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
37&DES_SPtrans();
38
39&asm_finish();
25 40
26if (!$main'openbsd) 41sub DES_encrypt_internal()
27 { 42 {
28 &DES_encrypt3("DES_encrypt3",1); 43 &function_begin_B("_x86_DES_encrypt");
29 &DES_encrypt3("DES_decrypt3",0); 44
30 &cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1); 45 if ($small_footprint)
31 &cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5); 46 {
47 &lea("edx",&DWP(128,"ecx"));
48 &push("edx");
49 &push("ecx");
50 &set_label("eloop");
51 &D_ENCRYPT(0,$L,$R,0,$trans,"eax","ebx","ecx","edx",&swtmp(0));
52 &comment("");
53 &D_ENCRYPT(1,$R,$L,2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
54 &comment("");
55 &add("ecx",16);
56 &cmp("ecx",&swtmp(1));
57 &mov(&swtmp(0),"ecx");
58 &jb(&label("eloop"));
59 &add("esp",8);
60 }
61 else
62 {
63 &push("ecx");
64 for ($i=0; $i<16; $i+=2)
65 {
66 &comment("Round $i");
67 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
68 &comment("Round ".sprintf("%d",$i+1));
69 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
70 }
71 &add("esp",4);
32 } 72 }
73 &ret();
33 74
34&asm_finish(); 75 &function_end_B("_x86_DES_encrypt");
76 }
77
78sub DES_decrypt_internal()
79 {
80 &function_begin_B("_x86_DES_decrypt");
81
82 if ($small_footprint)
83 {
84 &push("ecx");
85 &lea("ecx",&DWP(128,"ecx"));
86 &push("ecx");
87 &set_label("dloop");
88 &D_ENCRYPT(0,$L,$R,-2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
89 &comment("");
90 &D_ENCRYPT(1,$R,$L,-4,$trans,"eax","ebx","ecx","edx",&swtmp(0));
91 &comment("");
92 &sub("ecx",16);
93 &cmp("ecx",&swtmp(1));
94 &mov(&swtmp(0),"ecx");
95 &ja(&label("dloop"));
96 &add("esp",8);
97 }
98 else
99 {
100 &push("ecx");
101 for ($i=15; $i>0; $i-=2)
102 {
103 &comment("Round $i");
104 &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
105 &comment("Round ".sprintf("%d",$i-1));
106 &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
107 }
108 &add("esp",4);
109 }
110 &ret();
35 111
112 &function_end_B("_x86_DES_decrypt");
113 }
114
36sub DES_encrypt 115sub DES_encrypt
37 { 116 {
38 local($name,$do_ip)=@_; 117 local($name,$do_ip)=@_;
39 118
40 &function_begin_B($name,"EXTRN _DES_SPtrans:DWORD"); 119 &function_begin_B($name);
41 120
42 &push("esi"); 121 &push("esi");
43 &push("edi"); 122 &push("edi");
44 123
45 &comment(""); 124 &comment("");
46 &comment("Load the 2 words"); 125 &comment("Load the 2 words");
47 $trans="ebp";
48 126
49 if ($do_ip) 127 if ($do_ip)
50 { 128 {
@@ -77,39 +155,20 @@ sub DES_encrypt
77 } 155 }
78 156
79 # PIC-ification:-) 157 # PIC-ification:-)
80 &picmeup($trans,"DES_SPtrans"); 158 &call (&label("pic_point"));
81 #if ($cpp) { &picmeup($trans,"DES_SPtrans"); } 159 &set_label("pic_point");
82 #else { &lea($trans,&DWP("DES_SPtrans")); } 160 &blindpop($trans);
161 &lea ($trans,&DWP(&label("DES_SPtrans")."-".&label("pic_point"),$trans));
83 162
84 &mov( "ecx", &wparam(1) ); 163 &mov( "ecx", &wparam(1) );
85 &cmp("ebx","0");
86 &je(&label("start_decrypt"));
87
88 for ($i=0; $i<16; $i+=2)
89 {
90 &comment("");
91 &comment("Round $i");
92 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx");
93
94 &comment("");
95 &comment("Round ".sprintf("%d",$i+1));
96 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx");
97 }
98 &jmp(&label("end"));
99 164
100 &set_label("start_decrypt"); 165 &cmp("ebx","0");
101 166 &je(&label("decrypt"));
102 for ($i=15; $i>0; $i-=2) 167 &call("_x86_DES_encrypt");
103 { 168 &jmp(&label("done"));
104 &comment(""); 169 &set_label("decrypt");
105 &comment("Round $i"); 170 &call("_x86_DES_decrypt");
106 &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx"); 171 &set_label("done");
107 &comment("");
108 &comment("Round ".sprintf("%d",$i-1));
109 &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx");
110 }
111
112 &set_label("end");
113 172
114 if ($do_ip) 173 if ($do_ip)
115 { 174 {
@@ -143,7 +202,7 @@ sub DES_encrypt
143 202
144sub D_ENCRYPT 203sub D_ENCRYPT
145 { 204 {
146 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t)=@_; 205 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
147 206
148 &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0)); 207 &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
149 &xor( $tmp1, $tmp1); 208 &xor( $tmp1, $tmp1);
@@ -170,7 +229,7 @@ sub D_ENCRYPT
170 &and( $t, "0xff" ); 229 &and( $t, "0xff" );
171 &xor( $L, &DWP("0x600",$trans,$tmp1,0)); 230 &xor( $L, &DWP("0x600",$trans,$tmp1,0));
172 &xor( $L, &DWP("0x700",$trans,$tmp2,0)); 231 &xor( $L, &DWP("0x700",$trans,$tmp2,0));
173 &mov( $tmp2, &wparam(1) ); 232 &mov( $tmp2, $wp1 );
174 &xor( $L, &DWP("0x400",$trans,$u,0)); 233 &xor( $L, &DWP("0x400",$trans,$u,0));
175 &xor( $L, &DWP("0x500",$trans,$t,0)); 234 &xor( $L, &DWP("0x500",$trans,$t,0));
176 } 235 }
@@ -253,3 +312,142 @@ sub FP_new
253 &rotr($tt , 4); 312 &rotr($tt , 4);
254 } 313 }
255 314
315sub DES_SPtrans
316 {
317 &set_label("DES_SPtrans",64);
318 &data_word(0x02080800, 0x00080000, 0x02000002, 0x02080802);
319 &data_word(0x02000000, 0x00080802, 0x00080002, 0x02000002);
320 &data_word(0x00080802, 0x02080800, 0x02080000, 0x00000802);
321 &data_word(0x02000802, 0x02000000, 0x00000000, 0x00080002);
322 &data_word(0x00080000, 0x00000002, 0x02000800, 0x00080800);
323 &data_word(0x02080802, 0x02080000, 0x00000802, 0x02000800);
324 &data_word(0x00000002, 0x00000800, 0x00080800, 0x02080002);
325 &data_word(0x00000800, 0x02000802, 0x02080002, 0x00000000);
326 &data_word(0x00000000, 0x02080802, 0x02000800, 0x00080002);
327 &data_word(0x02080800, 0x00080000, 0x00000802, 0x02000800);
328 &data_word(0x02080002, 0x00000800, 0x00080800, 0x02000002);
329 &data_word(0x00080802, 0x00000002, 0x02000002, 0x02080000);
330 &data_word(0x02080802, 0x00080800, 0x02080000, 0x02000802);
331 &data_word(0x02000000, 0x00000802, 0x00080002, 0x00000000);
332 &data_word(0x00080000, 0x02000000, 0x02000802, 0x02080800);
333 &data_word(0x00000002, 0x02080002, 0x00000800, 0x00080802);
334 # nibble 1
335 &data_word(0x40108010, 0x00000000, 0x00108000, 0x40100000);
336 &data_word(0x40000010, 0x00008010, 0x40008000, 0x00108000);
337 &data_word(0x00008000, 0x40100010, 0x00000010, 0x40008000);
338 &data_word(0x00100010, 0x40108000, 0x40100000, 0x00000010);
339 &data_word(0x00100000, 0x40008010, 0x40100010, 0x00008000);
340 &data_word(0x00108010, 0x40000000, 0x00000000, 0x00100010);
341 &data_word(0x40008010, 0x00108010, 0x40108000, 0x40000010);
342 &data_word(0x40000000, 0x00100000, 0x00008010, 0x40108010);
343 &data_word(0x00100010, 0x40108000, 0x40008000, 0x00108010);
344 &data_word(0x40108010, 0x00100010, 0x40000010, 0x00000000);
345 &data_word(0x40000000, 0x00008010, 0x00100000, 0x40100010);
346 &data_word(0x00008000, 0x40000000, 0x00108010, 0x40008010);
347 &data_word(0x40108000, 0x00008000, 0x00000000, 0x40000010);
348 &data_word(0x00000010, 0x40108010, 0x00108000, 0x40100000);
349 &data_word(0x40100010, 0x00100000, 0x00008010, 0x40008000);
350 &data_word(0x40008010, 0x00000010, 0x40100000, 0x00108000);
351 # nibble 2
352 &data_word(0x04000001, 0x04040100, 0x00000100, 0x04000101);
353 &data_word(0x00040001, 0x04000000, 0x04000101, 0x00040100);
354 &data_word(0x04000100, 0x00040000, 0x04040000, 0x00000001);
355 &data_word(0x04040101, 0x00000101, 0x00000001, 0x04040001);
356 &data_word(0x00000000, 0x00040001, 0x04040100, 0x00000100);
357 &data_word(0x00000101, 0x04040101, 0x00040000, 0x04000001);
358 &data_word(0x04040001, 0x04000100, 0x00040101, 0x04040000);
359 &data_word(0x00040100, 0x00000000, 0x04000000, 0x00040101);
360 &data_word(0x04040100, 0x00000100, 0x00000001, 0x00040000);
361 &data_word(0x00000101, 0x00040001, 0x04040000, 0x04000101);
362 &data_word(0x00000000, 0x04040100, 0x00040100, 0x04040001);
363 &data_word(0x00040001, 0x04000000, 0x04040101, 0x00000001);
364 &data_word(0x00040101, 0x04000001, 0x04000000, 0x04040101);
365 &data_word(0x00040000, 0x04000100, 0x04000101, 0x00040100);
366 &data_word(0x04000100, 0x00000000, 0x04040001, 0x00000101);
367 &data_word(0x04000001, 0x00040101, 0x00000100, 0x04040000);
368 # nibble 3
369 &data_word(0x00401008, 0x10001000, 0x00000008, 0x10401008);
370 &data_word(0x00000000, 0x10400000, 0x10001008, 0x00400008);
371 &data_word(0x10401000, 0x10000008, 0x10000000, 0x00001008);
372 &data_word(0x10000008, 0x00401008, 0x00400000, 0x10000000);
373 &data_word(0x10400008, 0x00401000, 0x00001000, 0x00000008);
374 &data_word(0x00401000, 0x10001008, 0x10400000, 0x00001000);
375 &data_word(0x00001008, 0x00000000, 0x00400008, 0x10401000);
376 &data_word(0x10001000, 0x10400008, 0x10401008, 0x00400000);
377 &data_word(0x10400008, 0x00001008, 0x00400000, 0x10000008);
378 &data_word(0x00401000, 0x10001000, 0x00000008, 0x10400000);
379 &data_word(0x10001008, 0x00000000, 0x00001000, 0x00400008);
380 &data_word(0x00000000, 0x10400008, 0x10401000, 0x00001000);
381 &data_word(0x10000000, 0x10401008, 0x00401008, 0x00400000);
382 &data_word(0x10401008, 0x00000008, 0x10001000, 0x00401008);
383 &data_word(0x00400008, 0x00401000, 0x10400000, 0x10001008);
384 &data_word(0x00001008, 0x10000000, 0x10000008, 0x10401000);
385 # nibble 4
386 &data_word(0x08000000, 0x00010000, 0x00000400, 0x08010420);
387 &data_word(0x08010020, 0x08000400, 0x00010420, 0x08010000);
388 &data_word(0x00010000, 0x00000020, 0x08000020, 0x00010400);
389 &data_word(0x08000420, 0x08010020, 0x08010400, 0x00000000);
390 &data_word(0x00010400, 0x08000000, 0x00010020, 0x00000420);
391 &data_word(0x08000400, 0x00010420, 0x00000000, 0x08000020);
392 &data_word(0x00000020, 0x08000420, 0x08010420, 0x00010020);
393 &data_word(0x08010000, 0x00000400, 0x00000420, 0x08010400);
394 &data_word(0x08010400, 0x08000420, 0x00010020, 0x08010000);
395 &data_word(0x00010000, 0x00000020, 0x08000020, 0x08000400);
396 &data_word(0x08000000, 0x00010400, 0x08010420, 0x00000000);
397 &data_word(0x00010420, 0x08000000, 0x00000400, 0x00010020);
398 &data_word(0x08000420, 0x00000400, 0x00000000, 0x08010420);
399 &data_word(0x08010020, 0x08010400, 0x00000420, 0x00010000);
400 &data_word(0x00010400, 0x08010020, 0x08000400, 0x00000420);
401 &data_word(0x00000020, 0x00010420, 0x08010000, 0x08000020);
402 # nibble 5
403 &data_word(0x80000040, 0x00200040, 0x00000000, 0x80202000);
404 &data_word(0x00200040, 0x00002000, 0x80002040, 0x00200000);
405 &data_word(0x00002040, 0x80202040, 0x00202000, 0x80000000);
406 &data_word(0x80002000, 0x80000040, 0x80200000, 0x00202040);
407 &data_word(0x00200000, 0x80002040, 0x80200040, 0x00000000);
408 &data_word(0x00002000, 0x00000040, 0x80202000, 0x80200040);
409 &data_word(0x80202040, 0x80200000, 0x80000000, 0x00002040);
410 &data_word(0x00000040, 0x00202000, 0x00202040, 0x80002000);
411 &data_word(0x00002040, 0x80000000, 0x80002000, 0x00202040);
412 &data_word(0x80202000, 0x00200040, 0x00000000, 0x80002000);
413 &data_word(0x80000000, 0x00002000, 0x80200040, 0x00200000);
414 &data_word(0x00200040, 0x80202040, 0x00202000, 0x00000040);
415 &data_word(0x80202040, 0x00202000, 0x00200000, 0x80002040);
416 &data_word(0x80000040, 0x80200000, 0x00202040, 0x00000000);
417 &data_word(0x00002000, 0x80000040, 0x80002040, 0x80202000);
418 &data_word(0x80200000, 0x00002040, 0x00000040, 0x80200040);
419 # nibble 6
420 &data_word(0x00004000, 0x00000200, 0x01000200, 0x01000004);
421 &data_word(0x01004204, 0x00004004, 0x00004200, 0x00000000);
422 &data_word(0x01000000, 0x01000204, 0x00000204, 0x01004000);
423 &data_word(0x00000004, 0x01004200, 0x01004000, 0x00000204);
424 &data_word(0x01000204, 0x00004000, 0x00004004, 0x01004204);
425 &data_word(0x00000000, 0x01000200, 0x01000004, 0x00004200);
426 &data_word(0x01004004, 0x00004204, 0x01004200, 0x00000004);
427 &data_word(0x00004204, 0x01004004, 0x00000200, 0x01000000);
428 &data_word(0x00004204, 0x01004000, 0x01004004, 0x00000204);
429 &data_word(0x00004000, 0x00000200, 0x01000000, 0x01004004);
430 &data_word(0x01000204, 0x00004204, 0x00004200, 0x00000000);
431 &data_word(0x00000200, 0x01000004, 0x00000004, 0x01000200);
432 &data_word(0x00000000, 0x01000204, 0x01000200, 0x00004200);
433 &data_word(0x00000204, 0x00004000, 0x01004204, 0x01000000);
434 &data_word(0x01004200, 0x00000004, 0x00004004, 0x01004204);
435 &data_word(0x01000004, 0x01004200, 0x01004000, 0x00004004);
436 # nibble 7
437 &data_word(0x20800080, 0x20820000, 0x00020080, 0x00000000);
438 &data_word(0x20020000, 0x00800080, 0x20800000, 0x20820080);
439 &data_word(0x00000080, 0x20000000, 0x00820000, 0x00020080);
440 &data_word(0x00820080, 0x20020080, 0x20000080, 0x20800000);
441 &data_word(0x00020000, 0x00820080, 0x00800080, 0x20020000);
442 &data_word(0x20820080, 0x20000080, 0x00000000, 0x00820000);
443 &data_word(0x20000000, 0x00800000, 0x20020080, 0x20800080);
444 &data_word(0x00800000, 0x00020000, 0x20820000, 0x00000080);
445 &data_word(0x00800000, 0x00020000, 0x20000080, 0x20820080);
446 &data_word(0x00020080, 0x20000000, 0x00000000, 0x00820000);
447 &data_word(0x20800080, 0x20020080, 0x20020000, 0x00800080);
448 &data_word(0x20820000, 0x00000080, 0x00800080, 0x20020000);
449 &data_word(0x20820080, 0x00800000, 0x20800000, 0x20000080);
450 &data_word(0x00820000, 0x00020080, 0x20020080, 0x20800000);
451 &data_word(0x00000080, 0x20820000, 0x00820080, 0x00000000);
452 &data_word(0x20000000, 0x20800080, 0x00020000, 0x00820080);
453 }
diff --git a/src/lib/libcrypto/des/asm/des686.pl b/src/lib/libcrypto/des/asm/des686.pl
deleted file mode 100644
index d3ad5d5edd..0000000000
--- a/src/lib/libcrypto/des/asm/des686.pl
+++ /dev/null
@@ -1,230 +0,0 @@
1#!/usr/local/bin/perl
2
3$prog="des686.pl";
4
5# base code is in microsft
6# op dest, source
7# format.
8#
9
10# WILL NOT WORK ANYMORE WITH desboth.pl
11require "desboth.pl";
12
13if ( ($ARGV[0] eq "elf"))
14 { require "x86unix.pl"; }
15elsif ( ($ARGV[0] eq "a.out"))
16 { $aout=1; require "x86unix.pl"; }
17elsif ( ($ARGV[0] eq "sol"))
18 { $sol=1; require "x86unix.pl"; }
19elsif ( ($ARGV[0] eq "cpp"))
20 { $cpp=1; require "x86unix.pl"; }
21elsif ( ($ARGV[0] eq "win32"))
22 { require "x86ms.pl"; }
23else
24 {
25 print STDERR <<"EOF";
26Pick one target type from
27 elf - linux, FreeBSD etc
28 a.out - old linux
29 sol - x86 solaris
30 cpp - format so x86unix.cpp can be used
31 win32 - Windows 95/Windows NT
32EOF
33 exit(1);
34 }
35
36&comment("Don't even think of reading this code");
37&comment("It was automatically generated by $prog");
38&comment("Which is a perl program used to generate the x86 assember for");
39&comment("any of elf, a.out, Win32, or Solaris");
40&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+");
41&comment("eric <eay\@cryptsoft.com>");
42&comment("");
43
44&file("dx86xxxx");
45
46$L="edi";
47$R="esi";
48
49&DES_encrypt("DES_encrypt1",1);
50&DES_encrypt("DES_encrypt2",0);
51
52&DES_encrypt3("DES_encrypt3",1);
53&DES_encrypt3("DES_decrypt3",0);
54
55&file_end();
56
57sub DES_encrypt
58 {
59 local($name,$do_ip)=@_;
60
61 &function_begin($name,"EXTRN _DES_SPtrans:DWORD");
62
63 &comment("");
64 &comment("Load the 2 words");
65 &mov("eax",&wparam(0));
66 &mov($L,&DWP(0,"eax","",0));
67 &mov($R,&DWP(4,"eax","",0));
68
69 $ksp=&wparam(1);
70
71 if ($do_ip)
72 {
73 &comment("");
74 &comment("IP");
75 &IP_new($L,$R,"eax");
76 }
77
78 &comment("");
79 &comment("fixup rotate");
80 &rotl($R,3);
81 &rotl($L,3);
82 &exch($L,$R);
83
84 &comment("");
85 &comment("load counter, key_schedule and enc flag");
86 &mov("eax",&wparam(2)); # get encrypt flag
87 &mov("ebp",&wparam(1)); # get ks
88 &cmp("eax","0");
89 &je(&label("start_decrypt"));
90
91 # encrypting part
92
93 for ($i=0; $i<16; $i+=2)
94 {
95 &comment("");
96 &comment("Round $i");
97 &D_ENCRYPT($L,$R,$i*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx");
98
99 &comment("");
100 &comment("Round ".sprintf("%d",$i+1));
101 &D_ENCRYPT($R,$L,($i+1)*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx");
102 }
103 &jmp(&label("end"));
104
105 &set_label("start_decrypt");
106
107 for ($i=15; $i>0; $i-=2)
108 {
109 &comment("");
110 &comment("Round $i");
111 &D_ENCRYPT($L,$R,$i*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx");
112 &comment("");
113 &comment("Round ".sprintf("%d",$i-1));
114 &D_ENCRYPT($R,$L,($i-1)*2,"ebp","DES_SPtrans","ecx","edx","eax","ebx");
115 }
116
117 &set_label("end");
118
119 &comment("");
120 &comment("Fixup");
121 &rotr($L,3); # r
122 &rotr($R,3); # l
123
124 if ($do_ip)
125 {
126 &comment("");
127 &comment("FP");
128 &FP_new($R,$L,"eax");
129 }
130
131 &mov("eax",&wparam(0));
132 &mov(&DWP(0,"eax","",0),$L);
133 &mov(&DWP(4,"eax","",0),$R);
134
135 &function_end($name);
136 }
137
138
139# The logic is to load R into 2 registers and operate on both at the same time.
140# We also load the 2 R's into 2 more registers so we can do the 'move word down a byte'
141# while also masking the other copy and doing a lookup. We then also accumulate the
142# L value in 2 registers then combine them at the end.
143sub D_ENCRYPT
144 {
145 local($L,$R,$S,$ks,$desSP,$u,$t,$tmp1,$tmp2,$tmp3)=@_;
146
147 &mov( $u, &DWP(&n2a($S*4),$ks,"",0));
148 &mov( $t, &DWP(&n2a(($S+1)*4),$ks,"",0));
149 &xor( $u, $R );
150 &xor( $t, $R );
151 &rotr( $t, 4 );
152
153 # the numbers at the end of the line are origional instruction order
154 &mov( $tmp2, $u ); # 1 2
155 &mov( $tmp1, $t ); # 1 1
156 &and( $tmp2, "0xfc" ); # 1 4
157 &and( $tmp1, "0xfc" ); # 1 3
158 &shr( $t, 8 ); # 1 5
159 &xor( $L, &DWP("0x100+$desSP",$tmp1,"",0)); # 1 7
160 &shr( $u, 8 ); # 1 6
161 &mov( $tmp1, &DWP(" $desSP",$tmp2,"",0)); # 1 8
162
163 &mov( $tmp2, $u ); # 2 2
164 &xor( $L, $tmp1 ); # 1 9
165 &and( $tmp2, "0xfc" ); # 2 4
166 &mov( $tmp1, $t ); # 2 1
167 &and( $tmp1, "0xfc" ); # 2 3
168 &shr( $t, 8 ); # 2 5
169 &xor( $L, &DWP("0x300+$desSP",$tmp1,"",0)); # 2 7
170 &shr( $u, 8 ); # 2 6
171 &mov( $tmp1, &DWP("0x200+$desSP",$tmp2,"",0)); # 2 8
172 &mov( $tmp2, $u ); # 3 2
173
174 &xor( $L, $tmp1 ); # 2 9
175 &and( $tmp2, "0xfc" ); # 3 4
176
177 &mov( $tmp1, $t ); # 3 1
178 &shr( $u, 8 ); # 3 6
179 &and( $tmp1, "0xfc" ); # 3 3
180 &shr( $t, 8 ); # 3 5
181 &xor( $L, &DWP("0x500+$desSP",$tmp1,"",0)); # 3 7
182 &mov( $tmp1, &DWP("0x400+$desSP",$tmp2,"",0)); # 3 8
183
184 &and( $t, "0xfc" ); # 4 1
185 &xor( $L, $tmp1 ); # 3 9
186
187 &and( $u, "0xfc" ); # 4 2
188 &xor( $L, &DWP("0x700+$desSP",$t,"",0)); # 4 3
189 &xor( $L, &DWP("0x600+$desSP",$u,"",0)); # 4 4
190 }
191
192sub PERM_OP
193 {
194 local($a,$b,$tt,$shift,$mask)=@_;
195
196 &mov( $tt, $a );
197 &shr( $tt, $shift );
198 &xor( $tt, $b );
199 &and( $tt, $mask );
200 &xor( $b, $tt );
201 &shl( $tt, $shift );
202 &xor( $a, $tt );
203 }
204
205sub IP_new
206 {
207 local($l,$r,$tt)=@_;
208
209 &PERM_OP($r,$l,$tt, 4,"0x0f0f0f0f");
210 &PERM_OP($l,$r,$tt,16,"0x0000ffff");
211 &PERM_OP($r,$l,$tt, 2,"0x33333333");
212 &PERM_OP($l,$r,$tt, 8,"0x00ff00ff");
213 &PERM_OP($r,$l,$tt, 1,"0x55555555");
214 }
215
216sub FP_new
217 {
218 local($l,$r,$tt)=@_;
219
220 &PERM_OP($l,$r,$tt, 1,"0x55555555");
221 &PERM_OP($r,$l,$tt, 8,"0x00ff00ff");
222 &PERM_OP($l,$r,$tt, 2,"0x33333333");
223 &PERM_OP($r,$l,$tt,16,"0x0000ffff");
224 &PERM_OP($l,$r,$tt, 4,"0x0f0f0f0f");
225 }
226
227sub n2a
228 {
229 sprintf("%d",$_[0]);
230 }
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-05 01:19:03 +0000