1 files changed, 94 insertions, 0 deletions
diff --git a/crypto/libdes/doPC2 b/crypto/libdes/doPC2
new file mode 100755
index 0000000..fa5cf74
--- /dev/null
+++ b/crypto/libdes/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);
+		}
+	}