Question: Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be a simple XOR of the key with the input. In

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be a simple XOR of the key with the input. In other words, to encrypt x with k we simply perform xk giving y. Similarly, to decrypt y, we perform yk giving x.

You are given the following 16-bit input F5C6 in hexadecimal. You are provided IV as 8C in hexadecimal. The key to be used (where appropriate) is 49 in hexadecimal. Compute the encrypted output with the following methods. Express your final answer, for each of them, as 4 hexadecimal characters so it is easy to read.

A. (Points 5) Using ECB

B. (Points 5) Using CBC

C. (Points 5) Using OFB

D. (Points 5) Using CFB

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LTRT and the key is LKRK, where LC,RC,LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LT||RT and the key is LK||RK, where LC, RC, LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LT||RT and the key is LK||RK, where LC, RC, LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LT||RT and the key is LK||RK, where LC, RC, LT, and RT are each 4 bits, then...

Q:

CS 463/563: Cryptography for Cybersecurity Fall 2023 Homework #5 Points: 20 Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is...

Q:

****PLEASE ANSWER FULLY ; DO NOT LINK TO A DIFFERENT PREVIOUSLY ANSWERD QUESTION*** Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LT||RT and the key is LK||RK, where LC, RC, LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LT||RT and the key is LK||RK, where LC, RC, LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LTRT and the key is LKRK, where LC,RC, LT, and RT are each 4 bits, then...

Q:

Consider a simple system with 8-bit block size. Assume the encryption (and decryption) to be as follows: If plaintext is LTRT and the key is LKRK, where LC,RC, LT, and RT are each 4 bits, then...

Q:

Dr. Mark Greenberg practices dentistry in Topeka, Kansas. Greenberg tries hard to schedule appointments so that patients do not have to wait beyond their appointment time. His October 20 schedule is...

Q:

Analyzing and Interpreting the Inventory Turnover Ratio Dell Inc. is the leading manufacturer of personal computers. In a recent year, it reported the following in dollars in millions: Net sales...

Q:

What is the length of time that a broker is required to retain trust fund records and other records and connection with transactions of which real estate broker license is required?

Q:

3. (For Review) Propose a mechanism (push electrons) for the following reaction: HBr Br AX OH If H2SO4 was used in place of HBr, what would be the major product of the reaction

Q:

LO7.2 Describe how rational consumers maximize utility by comparing the marginal utility-toprice ratios of all the products they could possibly purchase.

Q:

3. Calculate total-revenue data from the demand schedule in review question 1. Graph total revenue below your demand curve. Generalize about the relationship between price elasticity and total...

Q:

5. In 2015, Paul Gauguins painting When Will You Marry sold for $300 million. Portray this sale in a demand and supply diagram and comment on the elasticity of supply. Comedian George Carlin once...