37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Wed Feb 3 10:55:48 2021
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@author: pjoulaud
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"""
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def codage_binaire(message : str, code : str) -> str:
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"""
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Fonction qui code un message à l' aide d' une clé. Le message codé resulte
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d' un OU exclusif bit à bit
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Argument :
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- message : Message à coder de type str
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- code : Clé de codage de type str
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Retourne :
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- res : Message codé bit à bit
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>>> codage_binaire(codage_binaire("Hello World!", "toto"), "toto")
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'Hello World!'
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"""
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i = 0
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res = ''
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for car in message :
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ord_car = ord(car)^ord(code[i%len(code)])
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#print(f"car : {ord(car):08b}\ncode : {ord(code[i%len(code)]):08b}\n => {ord_car:08b} \n")
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res += chr(ord_car)
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i += 1
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return res
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#CORPS DE PROGRAMME
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if __name__=='__main__':
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import doctest
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doctest.testmod()
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#message_code = codage_binaire('Hello World', 'toto')
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#input("Tapez Entree pour continuer")
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#message_decode = codage_binaire(message_code, 'toto')
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