# A Caesar Cipher Programimport os.pathdef welcome ():# add your code herereturndef enter_message():mode = ''message =shift = 0# add your code herereturn (mode, message, shift)def encrypt (message, shift):# add your code here.returndef decrypt (message, shift):# add your code herereturndef process_file(filename, mode, shift):list_messages = []# add your code herereturn list_messagesdef write_messages (lines):# add your code herereturndef is file (filename):return Falsedef message_or_file():11MUSTUSETEMPLATEmode=filename = NonemessageNoneshift = 0# add your code herereturn (mode, message, filename, shift) Full Implementation (user input in red)Welcome to the Caesar CipherThis program encrypts and decrypts text using Caesar Cipher.Would you like to encrypt (e) or decrypt (d): dWould you like to read from a file (f) or the console (c)? cWhat message would you like to decrypt: LIPPS ASVPHWhat is the shift number: 4HELLO WORLDWould you like to encrypt or decrypt another message? (y/n): yWould you like to encrypt (e) or decrypt (d): eWould you like to rea from a file (f) or the consoleWhat message would you like to encrypt: Hello WorldWhat is the shift number: 4(c) ? cLIPPS ASVPHWould you like to encrypt or decrypt another message? (y/n): yWould you like to encrypt (e) or decrypt (d): eWould you like to read from a file (f) or the console (c) ? fEnter a filename: something_silly.txtInvalid FilenameEnter a filename: messages.txtWhat is the shift number: 46Output written to results.txtWould you like to encrypt or decrypt another message? (y/n): nThanks for using the program, goodbye!

The Caesar Cipher can be denoted as an ancient and easy technique utilized for encryption of data.…

A Caesar Cipher Program import os.path def welcome(): # add your code here return def enter_message(): mode=" message - shift - 0 * add your code here return (mode, message, shift) def encrypt (message, shift): add your code here return USE

A Caesar Cipher Program import os.path def welcome(): # add your code here return def enter_message(): mode=" message - shift - 0 * add your code here return (mode, message, shift) def encrypt (message, shift): add your code here return USE

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

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# A Caesar Cipher Program
import os.path
def welcome ():
# add your code here
return
def enter_message():
mode = ''
message =
shift = 0
# add your code here
return (mode, message, shift)
def encrypt (message, shift):
# add your code here.
return
def decrypt (message, shift):
# add your code here
return
def process_file(filename, mode, shift):
list_messages = []
# add your code here
return list_messages
def write_messages (lines):
# add your code here
return
def is file (filename):
return False
def message_or_file():
11
MUST
USE
TEMPLATE
mode=
filename = None
message
None
shift = 0
# add your code here
return (mode, message, filename, shift)

Full Implementation (user input in red)
Welcome to the Caesar Cipher
This program encrypts and decrypts text using Caesar Cipher.
Would you like to encrypt (e) or decrypt (d): d
Would you like to read from a file (f) or the console (c)? c
What message would you like to decrypt: LIPPS ASVPH
What is the shift number: 4
HELLO WORLD
Would you like to encrypt or decrypt another message? (y/n): y
Would you like to encrypt (e) or decrypt (d): e
Would you like to rea from a file (f) or the console
What message would you like to encrypt: Hello World
What is the shift number: 4
(c) ? c
LIPPS ASVPH
Would you like to encrypt or decrypt another message? (y/n): y
Would you like to encrypt (e) or decrypt (d): e
Would you like to read from a file (f) or the console (c) ? f
Enter a filename: something_silly.txt
Invalid Filename
Enter a filename: messages.txt
What is the shift number: 4
6
Output written to results.txt
Would you like to encrypt or decrypt another message? (y/n): n
Thanks for using the program, goodbye!

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