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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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1. Vigenere - encode a message
3.
Using the Vigenere Cipher Table approach, encode the following message:
Message: "Hello, my name is Inigo Montoya"
Key: name
Cipher:
b.
Verify your answer by decoding the message

Expert Solution

Step 1

To encode the message "Hello, my name is Inigo Montoya" using the Vigenere Cipher Table approach with the key

"name," follow these steps:

Write the message and key in all uppercase letters without any spaces or punctuation: MESSAGE: HELLOMYNAMEISINIGOMONTOYA KEY: NAME
Write the key below the message, repeating it as many times as necessary to match the length of the message: MESSAGE: HELLOMYNAMEISINIGOMONTOYA KEY: NAMENAMENAMENAMENAMENAME
Use the Vigenere Cipher Table to find the cipher for each letter. The cipher is found at the intersection of the row of the message letter and the column of the key letter. For example, to find the cipher for the first letter "H" and key letter "N," find the "H" row and "N" column, and the cipher is the letter in that box, which is "S." MESSAGE: HELLOMYNAMEISINIGOMONTOYA KEY: NAMENAMENAMENAMENAMENAME CIPHER: SFSKZTYEHHZEBDKOJSHCBVWG

Therefore, the encoded message using the Vigenere Cipher Table approach with the key "name" is

"SFSKZTYEHHZEBDKOJSHCBVWG.

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