Database : Database (DB) is a collection of data in an organized manner so that it can be easily accessed, managed, and updated. Data is organized into rows, columns, and tables, and it is indexed to make it easier to find related information. Data gets updated, expands, and deleted as new information is added. Spread Sheet: Spreadsheet also called a worksheet is a software used to make files containing information in rows and columns. The spreadsheet containing rows and columns helps to sort, arrange the data easily. This files also makes the numerical calculation easy.

Question

Let the user choose encryption or decryption. For encryption, let user input the key in Hexadecimal number, the plain text in Hexadecimal number, output the ciphertext (in hexadecimal numbers). For decryption, let user input the key in Hexadecimal number, the ciphertext (in hexadecimal numbers), output the decrypted message (Hexadecimal number). Both encryption and decryption should output the different operation results for each round like the following: For example: Round 1: E(R0) = ...... (Hex or Binary) K1 = …… E(Ro) xor K1 = S-box outputs = …… f(Ro1, K1) = ….. L2 =R1 =……. La = Ra Round 2: .....• No Encryption/Decryption libraries or functions provided by the third party are allowed. Submit your program codes to Moodle with the notes of how to compile and run your program.

Answer 1

Question

Chapter 11, Problem 19SG

Program Plan Intro

Database:

Database (DB) is a collection of data in an organized manner so that it can be easily accessed, managed, and updated.

Data is organized into rows, columns, and tables, and it is indexed to make it easier to find related information.

Data gets updated, expands, and deleted as new information is added.

Spread Sheet:

Spreadsheet also called a worksheet is a software used to make files containing information in rows and columns.

The spreadsheet containing rows and columns helps to sort, arrange the data easily.

This files also makes the numerical calculation easy.

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Let the user choose encryption or decryption. For encryption, let user input the key in Hexadecimal number, the plain text in Hexadecimal number, output the ciphertext (in hexadecimal numbers). For decryption, let user input the key in Hexadecimal number, the ciphertext (in hexadecimal numbers), output the decrypted message (Hexadecimal number). Both encryption and decryption should output the different operation results for each round like the following: For example: Round 1: E(R0) = ...... (Hex or Binary) K1 = …… E(Ro) xor K1 = S-box outputs = …… f(Ro1, K1) = ….. L2 =R1 =……. La = Ra Round 2: .....• No Encryption/Decryption libraries or functions provided by the third party are allowed. Submit your program codes to Moodle with the notes of how to compile and run your program.

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