Write a Python program to implement Caesar cipher. Caesar cipher is used to encrypt text by replacing each letter by another letter that comes after it in the alphabet by a fixed number of letters (encryption number n). If the last letter of the alphabet (letter 'z') is reached, the program continues to count from the beginning of the alphabet (letter 'a'). The user enters the text and the encryption number (n), and the program prints the encrypted text. The program can be used to decrypt an encrypted text by entering the encrypted text and the negative value of encryption number (-n).
Write a Python program to implement Caesar cipher. Caesar cipher is used to encrypt text by replacing each letter by another letter that comes after it in the alphabet by a fixed number of letters (encryption number n). If the last letter of the alphabet (letter 'z') is reached, the program continues to count from the beginning of the alphabet (letter 'a'). The user enters the text and the encryption number (n), and the program prints the encrypted text. The program can be used to decrypt an encrypted text by entering the encrypted text and the negative value of encryption number (-n).
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:Write a Python program to implement Caesar cipher. Caesar cipher is used to encrypt text by replacing
each letter by another letter that comes after it in the alphabet by a fixed number of letters (encryption
number n). If the last letter of the alphabet (letter 'z') is reached, the program continues to count from
the beginning of the alphabet (letter 'a'). The user enters the text and the encryption number (n), and
the program prints the encrypted text. The program can be used to decrypt an encrypted text by
entering the encrypted text and the negative value of encryption number (-n).
Example1:
Enter message: Hello World!
Enter encryption key: 5
Mjqqt Btwqi!
Example2:
Enter message: Mjqqt Btwqi!
Enter encryption key: -5
Hello World!
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