CHIFFRE DE VIGENÈRE

#! /usr/bin/python

# -*- coding: cp1252 -*-



from Tkinter import *

import re

import string



def crypt():

    i=0

    str_crypted=''

    txt3.delete(1.0,END)

    

    str_tocrypt= txt1.get(1.0,END)

    str_tocrypt=string.upper(str_tocrypt)

    str_tocrypt=re.sub('[^A-Z]','',str_tocrypt)

    txt1.delete(1.0,END)

    txt1.insert(INSERT,str_tocrypt)



    cle=txt2.get( 1.0,END)

    cle=string.upper(cle)

    cle=re.sub('[^A-Z]','',cle)

    txt2.delete(1.0,END)

    txt2.insert(INSERT,cle)



    while i<=len(str_tocrypt)-1:

        if i<=len(cle)-1:

            let_interm = cle[i]

            decalage=ord(let_interm)-65

            if ord(str_tocrypt[i])+decalage>90:

                let_new=chr(ord(str_tocrypt[i])+decalage-26)

            else:

                let_new=chr(ord(str_tocrypt[i])+decalage)

            str_crypted+=let_new

        else:

            let_interm=cle[i-(i/len(cle))*len(cle)]

            decalage=ord(let_interm)-65

            if ord(str_tocrypt[i])+decalage>90:

                let_new=chr(ord(str_tocrypt[i])+decalage-26)

            else:

                let_new=chr(ord(str_tocrypt[i])+decalage)

            str_crypted+=let_new

        i=i+1



    txt3.insert (INSERT,str_crypted)



def uncrypt():

    i=0

    str_crypted=''

    txt1.delete(1.0,END)

    

    str_tocrypt=txt3.get(1.0,END)

    str_tocrypt=string.upper(str_tocrypt)

    str_tocrypt= re.sub('[^A-Z]','',str_tocrypt)

    txt3.delete(1.0,END)

    txt3.insert(INSERT,str_tocrypt)



    cle=txt2.get(1.0,END)

    cle=string.upper(cle)

    cle=re.sub('[^A-Z]','',cle)

    txt2.delete(1.0,END)

    txt2.insert(INSERT,cle)



    while i<=len(str_tocrypt)-1:

        if i<=len(cle)-1:

            let_interm = cle[i]

            decalage=ord(let_interm)-65

            if ord(str_tocrypt[i])-decalage<65:

                let_new=chr(ord(str_tocrypt[i])-decalage+26)

            else:

                let_new=chr(ord(str_tocrypt[i])-decalage)

            str_crypted+=let_new

        else:

            let_interm=cle[i-(i/len(cle))*len(cle)]

            decalage=ord(let_interm)-65

            if ord(str_tocrypt[i])-decalage<65:

                let_new=chr(ord(str_tocrypt[i])-decalage+26)

            else:

                let_new=chr(ord(str_tocrypt[i])-decalage)

            str_crypted+=let_new

        i=i+1



    txt1.insert(INSERT,str_crypted)



fen=Tk()

fen.title('Cryptage/Décryptage VIGENERE By ElPutoamo')



Label(fen,text='Texte à CRYPTER/DECRYPTER',fg='red').grid(row=0)



txt1=Text(fen,height=10,width=70)

txt1.grid(row=1)



Label(fen,text='Clé de cryptage',fg='red').grid(row=2)



bou1=Button(fen,text='Décrypter',command=uncrypt)

bou1.grid(row=2,sticky=E)



txt2=Text(fen,height=3,width=70)

txt2.grid(row=3)



bou2=Button(fen,text='Crypter',command=crypt)

bou2.grid(row=4,sticky=W)



Label(fen,text='Texte CRYPTE/A DECRYPTER',fg='red').grid(row=4)



txt3=Text(fen,height=10,width=70)

txt3.grid(row=5)



fen.mainloop()