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. 7. In stream cipher-based encryption, message integrity protection failure is more common. Explain why this occurs in a stream cypher in detail using applicable examples. 8. Describe how the Plaintext is affected by Ciphertext error propagation in Cipher Block Chaining Mode (CBC).

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A: The Answer is in step-2.

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A: ANSWER:-

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A: Preorder :- Root , left , right      In preorder first trace root and then left and then right

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A: - We need to create the algorithm and flowchart for the school level problem.

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A: The answer is

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A: ARP(Address Resolution Protocol)

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A: Please find the answer below :

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A: Software engineering is a systematic engineering approach to software development.

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A:

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A: Dear learner , Hope you are doing well  ,I will try my best to answer this question. Thank You!!

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A: The coding implementation is implemented in C++ language:

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A: Answer -  Let's understand the code line by line -

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A: There must be something fundamentally missing from the core concepts of software engineering.…

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A: Answer the above question are as follows

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A: According to the information given:- We have follow the instruction to perform palindrome.

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A: Optimization has a significant role in designing a system.

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A: The Answer is in step-2.

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A: the answers for the above graph is an given below :

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A: The solution to the given problem is below.

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.