I want to convert date time into 6 digit number, then convert it back into the exact date time. Is there a encryption method to this?

Question

Here are what I want do (1) convert date time to 6digit number ;(2)convert the 6digit number to the input date time. Any suggestion to do this?

Answer 1

The below is a python script that uses gtk (on linux) that I prepared for exactly the same purpose. If you are interested, I can convert it to C, or you can try to do so... In order to try it, input the date as YYMMDDHHmmss then click the convert button, ... very handy !!

The only thing, I had to use numbers and letters !!!!!

#!/usr/bin/python

import os
import sys
import pygtk
pygtk.require ( '2.0' )
import gtk

def to_digit(a):
    if (a < 10) and (a >= 0):
        return chr(48 + a)
    elif (a < 36) and (a > 9):
        return chr(55 + a)
    elif (a < 60) and (a > 35):
        return chr(61 + a)
    else:
        return chr(95)
#

def to_int(c):
    if (ord(c) < 58) and (ord(c) > 47):
        return ord(c)-48
    elif (ord(c) < 91) and (ord(c) > 64):
        return ord(c)-55
    elif (ord(c) < 123) and (ord(c) > 96):
        return ord(c)-61
#

def m_call(a):
    st = ''
    if a == 0:
        return '0'
    while a:
        b = a % 100
        a = a / 100
        st = to_digit(b) + st
    return st
#

def rev_m_call(st):
    cumul = 0
    for i in range(len(st)):
        cumul += to_int(st[i:i+1])*pow(10,2*(len(st)-i-1))
    return cumul
#

class frmMain:

    def run_cmd(self, widget, data=None):
        if data == 'o1':
            self.output_entry.set_text (m_call(int(self.input_entry.get_text())))
        elif data == 'o2':
            self.input_entry.set_text (str(rev_m_call(self.output_entry.get_text())))
        elif data == 'c':
            self.input_entry.set_text ("")
            self.output_entry.set_text ("")
        else:
            pass

    def delete_event(self, widget, event, data=None):
        print ("delete event occurred")
        return False

    def destroy(self, widget, data=None):
        gtk.main_quit ()

    def __init__(self):

        self.WIDTH  = 300
        self.HEIGHT = 60

        self.window = gtk.Window ( gtk.WINDOW_TOPLEVEL )
        self.window.set_title ( "Give the date to convert to code!!" )
        self.window.set_size_request ( self.WIDTH, self.HEIGHT )
        self.window.set_resizable ( False )
        self.window.connect ( "delete_event", self.delete_event )
        self.window.connect ( "destroy", self.destroy )
        self.window.set_border_width ( 2 )
        vb = gtk.VBox ( False, 0 )
        self.window.add ( vb )
        hb = gtk.HBox ( True, 0 )
        self.input_entry = gtk.Entry ()
        hb.pack_start ( self.input_entry, False, True, 2 )
        self.output_entry = gtk.Entry ()
        hb.pack_start (self.output_entry, False, True, 2 )
        vb.pack_start ( hb, False, True, 2 )
        hb = gtk.HBox ( False, 0 )
        r1 = gtk.Button ( ">======->>" )
        r1.connect ( "clicked", self.run_cmd, 'o1' )
        hb.pack_end ( r1, False, False, 2 )
        r2 = gtk.Button ( "<<-======<" )
        r2.connect ( "clicked", self.run_cmd, 'o2' )
        hb.pack_end ( r2, False, False, 2 )
        clear_button = gtk.Button ( "Clear" )
        clear_button.connect ( "clicked", self.run_cmd, 'c' )
        hb.pack_end ( clear_button, False, False, 2 )
        cancel_button = gtk.Button ( "Cancel" )
        cancel_button.connect ( "clicked", self.destroy )
        hb.pack_end ( cancel_button, False, False, 2 )
        vb.pack_start ( hb, False, True, 2 )
        self.window.show_all ()

    def main(self):
        gtk.main()



if __name__ == "__main__":
    run = frmMain ()
    run.main ()