My fiddling with http://www.telogis.co.nz/quiz.php

readable.quiz.rb

z = 3 * 0x41662d2d * 123750872726249
o = []

puts z.to_s(16)

while z != 0
  # let's eat through z one byte at a time
  l = z >>4 &0xf #shift right then AND with 16 to get the character
  r = z &0xf #just AND with 16 to get the XORed with l position in the array
  o[r^l]=(l + 97).chr #put the character in the correct spot in the array
  z = z >> 8 #start working on the next 8 bits
end

word = o.join

puts word

# might be fun to generate the number from the word... lets create y!
y = 0

injection_order = [3,6,8,5,0,9,4,7,1,2] # try to get same number above
#injection_order=(0..word.length).to_a.shuffle # get random order

injection_order.each do |index|
  l = word[index] - 97
  r = index^l
  y = y << 4 unless y == 0
  y += l
  y = y << 4 
  y += r
end

puts y.to_s(16)

raise unless y == z # no error

Copy and paste your code to http://tryruby.org and it is giving error as below. Do I need to test it on a "real" Ruby install?

=> #<NoMethodError: undefined method `-' for "f":String>

Just really curious what the page looks like