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Caesar encryption.py
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Caesar encryption.py
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def encrypt(message, key):
encrypted_message = ""
for char in message:
if char.isalpha():
shifted = ord(char) + key
if char.islower():
if shifted > ord('z'):
shifted -= 26
elif char.isupper():
if shifted > ord('Z'):
shifted -= 26
encrypted_message += chr(shifted)
else:
encrypted_message += char
return encrypted_message
def decrypt(encrypted_message, key):
return encrypt(encrypted_message, -key)
def main():
choice = input("¿Quieres encriptar (E) o desencriptar (D) un mensaje? ").upper()
if choice == "E":
message = input("Ingrese el mensaje a encriptar: ")
key = int(input("Ingrese el valor de la clave: "))
encrypted_message = encrypt(message, key)
print("Mensaje encriptado:", encrypted_message)
elif choice == "D":
encrypted_message = input("Ingrese el mensaje a desencriptar: ")
key = int(input("Ingrese el valor de la clave: "))
decrypted_message = decrypt(encrypted_message, key)
print("Mensaje desencriptado:", decrypted_message)
else:
print("Opción no válida. Por favor, elige 'E' o 'D'.")
if __name__ == "__main__":
main()