ID encryptor and decryptor

encryptor.rb

# app/lib/encryptor.rb

class Encryptor

  def self.encrypt(unencrypted_string)
    _cipher = OpenSSL::Cipher.new('AES-256-CBC').encrypt    
    _cipher.key = "AtafSyyodFgHwvbGNFtekoRKarGvMJlu"
    if unencrypted_string.present?      
      encrypted_string = _cipher.update(unencrypted_string) + _cipher.final
      Base64.encode64(encrypted_string.unpack('H*')[0].upcase).chomp
      else
        encrypted_string = ""
    end
  end

  def self.decrypt(encrypted_string)
    _cipher = OpenSSL::Cipher.new('AES-256-CBC').decrypt
    _cipher.key = "AtafSyyodFgHwvbGNFtekoRKarGvMJlu"    
    encrypted_string = [Base64.decode64(encrypted_string)].pack("H*")  
    if encrypted_string.present?  
      unencrypted_string = _cipher.update(encrypted_string) + _cipher.final
    else
      unencrypted_string = ""
    end
  end

end