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Principles of Information Security...

6th Edition
Michael E. Whitman + 1 other
Publisher: Cengage Learning
ISBN: 9781337102063

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BuyFindarrow_forward

Principles of Information Security...

6th Edition
Michael E. Whitman + 1 other
Publisher: Cengage Learning
ISBN: 9781337102063
Chapter 8, Problem 11RQ
Textbook Problem
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What critical issue in symmetric and asymmetric encryption is resolved by using a hybrid method like Diffie-Hellman?

Program Plan Intro

Symmetric and asymmetric encryption:

The encryption technique uses the same secret key for sender and receiver to encrypt and decrypt the message is known as symmetric encryption.

The sender and receiver uses different keys for encryption and decryption is known as asymmetric encryption. It is otherwise known as public key cryptography.

Explanation of Solution

Drawbacks in symmetric and asymmetric encryption:

  • Symmetric key has the problem in key transportation. If the key is exchanged as electronic manner then it is impossible to guarantee.
  • The drawback of asymmetric key encryption is speed. Other methods are significantly faster than asymmetric cryptosystem.

Diffie-Hellman:

It is a technique which is used to share the secret keys between two parties. Diffie-Hellman method is one of the method in hybrid system to exchange the keys...

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