5. Explain the DES data encryption technique with plaintext of 64 bits and keys of 56 bits. Also, describe the decryption algorithm. 6. What are the shortcomings of DES that led to the invention of AES? Make your response really precise.

5. Explain the DES data encryption technique with plaintext of 64 bits and keys of 56 bits. Also, describe the decryption algorithm. 6. What are the shortcomings of DES that led to the invention of AES? Make your response really precise.

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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Concept explainers

Cryptography

Cryptography is a term used in computer science to describe secure information and communication techniques that transform messages in difficult-to-decipher ways using mathematical concepts and a set of rule-based calculations known as algorithms.

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5. Explain the DES data encryption technique with plaintext of 64 bits and
keys of 56 bits. Also, describe the decryption algorithm. 6. What are the
shortcomings of DES that led to the invention of AES? Make your response
really precise.

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