If you're going to use string xor, why do it a character at a time?

Why indeed? 

use MIME::Base64 qw( decode_base64 );

my $orig = decode_base64( $_ );
$orig ^= substr $orig, 1;

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And your solution doesn't work. It appends a junk character.

joec_'s explaination didn't say what to do with the last byte so I left it in.

In reply to Re^4: Base64 and byte arrays by jwkrahn
in thread Base64 and byte arrays by joec_

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