Project 1 is: Write a script that inputs a line of plaintext and a distance value and outputs an encrypted text using a Caesar cipher. The script should work for any printable characters.An example of the program input and output is shown below:Enter a message: Hello world!Enter the distance value: 4Lipps${svph%Project 2 is Write a script that inputs a line of encrypted text and a distance value and outputs plaintext using a Caesar cipher. The script should work for any printable characters. An example of the program input and output is shown below: Enter the coded text: Lipps${svph%Enter the distance value: 4Hello world! My question is Modify the scripts of Projects 1 and 2 to encrypt and decrypt entire files of text.An example of the program interface is shown below:Enter the input file name: encrypted.txtEnter the output file name: aEnter the distance value: 3 the example program interface is attached in images. 2 File: encrypt.py3 Project 4.345 Encypts a text file. The inputs are the names of6 the input file and the output file and the distance value.7 The encrypted code is witten to a new file.8II II II10 plainText = input("Enter a one-word, lowercase message: ")int(input("Enter the distance value: "))11 distance =12 code =13 for ch in plainText:ordValue = ord(ch)cipherValue = ordValue + distanceif cipherValue > ord('z'):cipherValue = ord('a') + distance1415161718(ord('z') - ordValue + 1)code += chr (cipherValue)1920 print(code)21E 1 III2 File: decrypt.py3 Project 4.345 Decypts a file of encrypted text. and prints6 the result. The other input is the distance value.II I89 code = raw_input("Enter the coded text: ")10 distance = input("Enter the distance value: ")11 plainText = "12 for ch in code:13141516171819 print plainTextordValue = ord(ch)cipherValue = ordValue - distanceif cipherValue < ord('a'):cipherValue = ord('z') - (distance - \(ordValue - ord('a')) - 1)plainText += chr(cipherValue)20

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Answered: work for any printable characters. An…

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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Project 1 is:

Write a script that inputs a line of plaintext and a distance value and outputs an encrypted text using a Caesar cipher. The script should work for any printable characters.

An example of the program input and output is shown below:

Enter a message: Hello world!

Enter the distance value: 4

Lipps${svph%

Project 2 is

Write a script that inputs a line of encrypted text and a distance value and outputs plaintext using a Caesar cipher. The script should work for any printable characters. An example of the program input and output is shown below: Enter the coded text: Lipps${svph%

Enter the distance value: 4

Hello world!

My question is

Modify the scripts of Projects 1 and 2 to encrypt and decrypt entire files of text.

An example of the program interface is shown below:

Enter the input file name: encrypted.txt

Enter the output file name: a

Enter the distance value: 3

the example program interface is attached in images.

2 File: encrypt.py
3 Project 4.3
4
5 Encypts a text file. The inputs are the names of
6 the input file and the output file and the distance value.
7 The encrypted code is witten to a new file.
8
II II II
10 plainText = input("Enter a one-word, lowercase message: ")
int(input("Enter the distance value: "))
11 distance =
12 code =
13 for ch in plainText:
ordValue = ord(ch)
cipherValue = ordValue + distance
if cipherValue > ord('z'):
cipherValue = ord('a') + distance
14
15
16
17
18
(ord('z') - ordValue + 1)
code += chr (cipherValue)
19
20 print(code)
21
E

1 III
2 File: decrypt.py
3 Project 4.3
4
5 Decypts a file of encrypted text. and prints
6 the result. The other input is the distance value.
II I
8
9 code = raw_input("Enter the coded text: ")
10 distance = input("Enter the distance value: ")
11 plainText = "
12 for ch in code:
13
14
15
16
17
18
19 print plainText
ordValue = ord(ch)
cipherValue = ordValue - distance
if cipherValue < ord('a'):
cipherValue = ord('z') - (distance - \
(ordValue - ord('a')) - 1)
plainText += chr(cipherValue)
20

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