Ok, I can't do a simple s/// because I actually have to rotate them. It's something with the conditional or the assignment. I tried updating the code in this manner 
#!/usr/bin/perl

open my $in,  '<:raw', 'out.dat' or die $!;
open my $out, '>:raw', 'outfile.jpg' or die $!;
local $/ = \1024;
my $byte;
while (read($in, $byte, 1)) {
	if($byte == x00){
		$byte = chr(x17);}
	elsif($byte == x17){
		$byte = chr(x00);}
	elsif($byte == x4E){
		$byte = chr(x42);}
	elsif($byte == x42){
		$byte = chr(x4E);}
	elsif($byte == x24){
		$byte = chr(x90);}
	elsif($byte == x90){
		$byte = chr(x24);}
	print $out $byte;
}
close $in or die $!;
close $out or die $!;
all it prints is many nulls and sporadic digits 1..9. I've even tried this with an if($byte eq chr(x00)) but it doesn't work eighther.

In reply to Re^2: Binary conditionals by bunnym4n
in thread Binary conditionals by bunnym4n

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