Assuming the key contains valid 2digit hex numbers: 

use strict;
use warnings;

my $key = "A21B12C212AD12FF";
my @key = map hex, $key =~ /../g;
print "@key\n";

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HELP: How to do this with unpack? All my attempts are failing...

In reply to Re: String to Byte array by hdb
in thread String to Byte array by kpaxian25

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