Digesting value in YAML file into MD5 hash - ruby

Question

I have a YAML file containing usernames and passwords.
Overview of YAML:
users:
test:
password: test
test2:
password: test2
I want to encrypt the password value into an MD5 hash using Digest::MD5 for example:
user:
Lost Bam:
password: testtesttest #<=I want to overwrite this password with a MD5 hash
In Digest is there a way to encrypt a hash value? If so how do I implement this into a YAML file?
md5.rb Source:
require 'yaml'
require 'digest'
private
def load_file
File.exist?('info.yml') ? YAML.load_file('info.yml') : {users: {}}
end
def read_file
File.read('info.yml')
end
def save_file( hash )
File.open('info.yml', 'w') { |f| f.write(hash.to_yaml)}
end
def add_user
hash = load_file
hash["users"][prompt('Enter username:')] =
{ "password" => prompt('Enter password:') }
puts "Encrypt information?"
information = gets.chomp
case input
when /yes/i
# hash = Digest::MD5.digest(["password"]'value')<-Doesn't work
#
#This is where I want to be able to encrypt the
#value of the password key that was entered by the user
#
# save_file( hash )
else
puts "Add another?"#Not completed yet
end
save_file( hash )
end
main.rb Source:
require_relative 'md5.rb'
def main
puts <<-END.gsub(/^\s*>/, '')
>
>To load information type "L" to quit system type "Q"
>
END
input = gets.chomp.upcase
case input
when "L"
add_user
when "Q"
exit_system
else
exit_lock
end
end
def exit_system
puts "Exiting..."
exit
end
def exit_lock
puts "Locked out, please contact system administrator"
exit
end
def restart
puts "Encrypt more?"
input = gets.chomp
if input =~ /yes/i
return true
else
exit_system
end
end
def prompt( message )
puts message
gets.chomp
end
main

Answer 1

You can use Digest::MD5:
require 'digest'
Digest::MD5.digest('value')
http://ruby-doc.org/stdlib-2.1.0/libdoc/digest/rdoc/Digest.html