DES 1. You are a junior IT executive at your department dealing with the DES encryption key. From the random key generator, you are given the secret key (E0E0E0E0F1F1F1F1)hex to encrypt a message. a)What is the output of the key after it is applied with the parity bit drop process box in Figure 1? At this point, is it a strong or weak key? Please state your reason. b)Using the key-permutation compression 2 from Figure 2, decide whether this is a strong or weak key. Justify your answer. DO NOT COPY AND PASTE!
DES 1. You are a junior IT executive at your department dealing with the DES encryption key. From the random key generator, you are given the secret key (E0E0E0E0F1F1F1F1)hex to encrypt a message. a)What is the output of the key after it is applied with the parity bit drop process box in Figure 1? At this point, is it a strong or weak key? Please state your reason. b)Using the key-permutation compression 2 from Figure 2, decide whether this is a strong or weak key. Justify your answer. DO NOT COPY AND PASTE!
Chapter6: System Integration And Performance
Section: Chapter Questions
Problem 20VE
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Question
DES
1. You are a junior IT executive at your department dealing with the DES encryption key. From the random key generator, you are given the secret key (E0E0E0E0F1F1F1F1)hex to encrypt a message.
a)What is the output of the key after it is applied with the parity bit drop process box in Figure 1? At this point, is it a strong or weak key? Please state your reason.
b)Using the key-permutation compression 2 from Figure 2, decide whether this is a strong or weak key. Justify your answer.
DO NOT COPY AND PASTE!
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Figure 1: Parity bit drop
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Figure 2: Key-Permutation Compression 2
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