password_generator.rb

module PasswordGenerator
	def PasswordGenerator.generateRandomPass(number_of_chars)
		allowed_chars = {
			:lowercase => ('a'..'z').to_a,
			:uppercase => ('A'..'Z').to_a,
			:numbers => ('0'..'9').to_a,
			:symbols => ['!', '"', '#', "\$", '%', '&', "\'", "\(", "\)", '*', '+', "\,", '-', "\.", '/', "\:", 
			"\;", '<', "\=", '>', '?', "\@", '[', "\\", "\]", '^', "\_", "\'", "\{", '|', "\}", "\~"]
		}
		num_of_lowercase = rand(1..number_of_chars - 3)
		num_of_uppercase = rand(1..number_of_chars - num_of_lowercase - 2)
		num_of_numbers = rand(1..number_of_chars - num_of_lowercase - num_of_uppercase - 1)
		num_of_symbols = number_of_chars - num_of_lowercase - num_of_uppercase - num_of_numbers
		pass = allowed_chars[:lowercase].shuffle()[0..num_of_lowercase - 1] +
			   allowed_chars[:uppercase].shuffle()[0..num_of_uppercase - 1] +
			   allowed_chars[:numbers].shuffle()[0..num_of_numbers - 1] +
			   allowed_chars[:symbols].shuffle()[0..num_of_symbols - 1]
		pass = pass.shuffle.join
	end
end