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authorneonloop2021-10-20 14:54:27 +0000
committerneonloop2021-10-20 14:54:27 +0000
commitea1947ffcc606d757357398b24e74a3f4ecefa07 (patch)
tree2031b8d4fc4c61063c710a7148378f57e662efbd /3rdparty/des-4.04b/doPC2
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Initial commit from steward-fu releasemain
Diffstat (limited to '3rdparty/des-4.04b/doPC2')
-rw-r--r--3rdparty/des-4.04b/doPC294
1 files changed, 94 insertions, 0 deletions
diff --git a/3rdparty/des-4.04b/doPC2 b/3rdparty/des-4.04b/doPC2
new file mode 100644
index 0000000..fa5cf74
--- /dev/null
+++ b/3rdparty/des-4.04b/doPC2
@@ -0,0 +1,94 @@
+#!/usr/local/bin/perl
+
+@PC2_C=(14,17,11,24, 1, 5,
+ 3,28,15, 6,21,10,
+ 23,19,12, 4,26, 8,
+ 16, 7,27,20,13, 2,
+ );
+
+@PC2_D=(41,52,31,37,47,55,
+ 30,40,51,45,33,48,
+ 44,49,39,56,34,53,
+ 46,42,50,36,29,32,
+ );
+
+$i=0;
+foreach (@PC2_C) {
+ $_--;
+# printf "%2d,",$_;
+ $C{$_}=$i;
+ ++$i;
+# print "\n" if ((($i) % 8) == 0);
+ }
+$i=0;
+#print "\n";
+foreach (@PC2_D) {
+ $_-=28;
+ $_--;
+# printf "%2d,",$_;
+ $D{$_}=$i;
+ $i++;
+# print "\n" if ((($i) % 8) == 0);
+ }
+
+#print "\n";
+foreach $i (0 .. 27)
+ {
+ $_=$C{$i};
+# printf "%2d,",$_;
+ $i++;
+# print "\n" if ((($i) % 8) == 0);
+ }
+#print "\n";
+
+#print "\n";
+foreach $i (0 .. 27)
+ {
+ $_=$D{$i};
+# printf "%2d,",$_;
+ $i++;
+# print "\n" if ((($i) % 8) == 0);
+ }
+#print "\n";
+
+print "static ulong skb[8][64]={\n";
+&doit("C",*C, 0, 1, 2, 3, 4, 5);
+&doit("C",*C, 6, 7, 9,10,11,12);
+&doit("C",*C,13,14,15,16,18,19);
+&doit("C",*C,20,22,23,25,26,27);
+
+&doit("D",*D, 0, 1, 2, 3, 4, 5);
+&doit("D",*D, 7, 8,10,11,12,13);
+&doit("D",*D,15,16,17,18,19,20);
+&doit("D",*D,21,22,23,24,26,27);
+print "};\n";
+
+sub doit
+ {
+ local($l,*A,@b)=@_;
+ local(@out);
+
+ printf("/* for $l bits (numbered as per FIPS 46) %d %d %d %d %d %d */\n",
+ $b[0]+1, $b[1]+1, $b[2]+1, $b[3]+1, $b[4]+1, $b[5]+1);
+ for ($i=0; $i<64; $i++)
+ {
+ $out[$i]=0;
+ $j=1;
+#print "\n";
+ for ($k=0; $k<6; $k++)
+ {
+ $l=$A{$b[$k]};
+#print"$l - ";
+ if ((1<<$k) & $i)
+ {
+ $ll=int($l/6)*8+($l%6);
+ $out[$i]|=1<<($ll);
+ }
+ }
+ $pp=$out[$i];
+ $pp=($pp&0xff0000ff)| (($pp&0x00ff0000)>>8)|
+ (($pp&0x0000ff00)<<8);
+ printf("0x%08X,",$pp);
+ print "\n" if (($i+1) % 4 == 0);
+ }
+ }