in reply to String to Byte array

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...

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Re^2: String to Byte array
by BrowserUk (Patriarch) on Sep 19, 2013 at 20:50 UTC

    What the OP probably needs, rather than an array of integers, is a binary string of unsigned chars derived from the hex string input.

    That is done using pack, not unpack:

    print pack 'H*', "A21B12C212AD12FF";;
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      Thanks that helped me to get the same output as C# code. Perl Rules :)
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