Dead Trigger Puzzle from 2013

gistfile1.txt

Solution to an old puzzle. The puzzle text:

02201010121021210121111011020201012110221021
21020201012102221020211111110210101211010102
10010120211210202101211102210212010121012111
00210201010121101010210010120220010121102011
02021102101201010120211210121111110101202112
01012020210101201212012100121101212012110121
20121201211

What it said:

    I have the keys of Death and of Hades. Day D = 20121221

Here's the code used, just base 2 in groups of 5 to each ascii character in the solution.

#!/usr/bin/perl

use Math::Base::Convert;
my $mb=new Math::Base::Convert(["0".."2"], "10");

while (<>) {
  while (/(.....)/g) {
    $dec = $mb->cnv($1);
    $chr = chr($dec);
    print("$chr");
  }
  print("\n");
}