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CifradoCesar.py
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CifradoCesar.py
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# -*- coding: utf-8 -*-
"""
Created on Tue Nov 20 12:08:45 2018
@author: FamiliaHogar
"""
# The Caesar Cipher Algorithm
def main():
message = input("Introducir Mensaje: ")
key = int(input("Key [1-26]: "))
mode = input("Cifrar o Descifrar [c/d]: ")
if mode.lower().startswith('c'):
mode = "cifrar"
elif mode.lower().startswith('d'):
mode = "descifrar"
translated = encdec(message, key, mode)
if mode == "cifrar":
print(("Mensaje Cifrado:", translated))
elif mode == "descifrar":
print(("Mensaje Descifrado:", translated))
def encdec(message, key, mode):
message = message.upper()
translated = ""
LETTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
for symbol in message:
if symbol in LETTERS:
num = LETTERS.find(symbol)
if mode == "cifrar":
num = num + key
elif mode == "descifrar":
num = num - key
if num >= len(LETTERS):
num -= len(LETTERS)
elif num < 0:
num += len(LETTERS)
translated += LETTERS[num]
else:
translated += symbol
return translated
if __name__ == '__main__':
main()