import sys
import binascii
try:  
	import pygtk
	pygtk.require("2.0")  
except:
	print("Failed to import pygtk.")
	sys.exit(1)

try:
	import gtk  
	import gtk.glade  
except:  
	print("GTK Not Availible")
	sys.exit(1)


class MainApp:

	wTree = None

	def __init__( self ):
		self.wTree = gtk.glade.XML( "crypto.glade" )
		
		dic = { 
			"on_windowMain_destroy" : self.quit,
			"on_bttn_decrypt_clicked" : self.on_bttn_decrypt_clicked
		}
		self.private_key = "sGLoX0H2+8TjTY3PQsEk66obR3"
		self.iv_length = 8
		self.key_length = 56
		self.wTree.signal_autoconnect( dic )
		
		gtk.main()
		
	def quit(self, widget):
		sys.exit(1)
		
	def on_bttn_decrypt_clicked(self, widget):
		"""What to do when they want to decrypt something."""
		
		#Get the widgets.
		w1 = self.wTree.get_widget("txt_card_code")
		w2 = self.wTree.get_widget("lbl_plaintext_card_number")
		w3 = self.wTree.get_widget("lbl_plaintext_card_code")
		
		#Extract the code.
		t1=w1.get_text()
		
		#Test that there is something to work on.
		if not t1:
			return
		
		#Translate the hex string into binary string.
		t1 = binascii.unhexlify(t1)
		
		#Extract the card number and the security code.
		w2.set_text(t1[:-3])
		w3.set_text(t1[-3:])
		
letsdothis = MainApp()