cipher

gistfile1.txt

   ####
   # Counts the characters of the encrypted message and returns
   # the number of characters that needs to be generated and added
   # to the message so that every encrypted message has a total
   # of 100 characters (target).
   def generate_fill(string)
      target = 100
      chars_left = target - string.size
      return ([*('0'..'9'),*('a'..'z')]).sample(chars_left.to_i).join 
   end

   cipher = {
      "a" => ['1q24t', 'akO17'],	 
      "b" => ['5T15q', 'x1m45'],
      "c" => ['1p97x', '9zP23'],	
      "d" => ['9z22z', '7qM61'],	
      "e" => ['1r18i', '5ik80'],
      "f" => ['3P42e', '9tv12'],
      "g" => ['7j80e', '13y25'],
      "h" => ['1k51w', 'u6c74'], 
      "i" => ['6c85c', 'gT399'],
      "j" => ['9V36v', 'z1P58'],
      "k" => ['3L88j', '0hi92'],
      "l" => ['6j11o', 'e7r33'], 
      "m" => ['1b82y', 'j1k26'],
      "n" => ['2y43e', 'kXO91'],
      "o" => ['7h48q', 'W1e12'],
      "p" => ['1Z10p', 'M9y53'],
      "q" => ['9B32o', '5sf48'],
      "r" => ['7W77l', 'n3n27'],
      "s" => ['3s43k', '20l85'],
      "t" => ['7cY5b', '88o93'],
      "u" => ['8i14n', '0Ri04'],
      "v" => ['9R81s', '4a118'],
      "w" => ['1q43a', 'tU081'],
      "x" => ["1a02s", "pA323"],
      "y" => ["9o00e", "i8j35"],
      "z" => ["1j69y", "D7x91"]
      }

   prompt = ">> "
   puts "Enter a message you would like to encrypt.", prompt
   input = gets.chomp
   encrypted_content = input.gsub(Regexp.union(cipher.keys))  {|m| cipher[m].sample }
   fill = generate_fill(encrypted_content)
   output = encrypted_content + fill

   puts "\n***************************************************************************************************" 
   puts "Encrypted message: #{output}"
   puts "***************************************************************************************************"