Re3: A real challenge

You're making $key too long by a factor of 39. You want something more like this (where @encoded is the given byte array):

my $encodedString = pack('c*', @encoded);
my $key = 'Copyright © 2000 ActiveState Tool Corp.';
$key = $key x ( length($encodedString) / length($key) + 1);
$key = substr($key, 0, length($encodedString));
print $key ^ $encodedString;
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Re: Re3: A real challenge by larryk (Friar) on Jul 16, 2001 at 20:57 UTC
I know - it's just so that the key can be any length without having to do the length X/length y + 1 thing all on one line :) I have to substr it anyway so what's a few bytes between system calls! I wouldn't have been so frivolous if I was getting the key from STDIN though! "Argument is futile - you will be ignorralated!"	[reply]


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