E(m, K;) m = She produces: She sends Bob: m. swer the following: a. What type of cryptosystem are Alice and Bob utilizing? (Symmetric or Asymmetric?) b. Does the scheme utilized by Alice and Bob provide confidentiality? (Why or why not?) Does the scheme utilized by Alice and Bob provide message integrity? (Why or why not d. Does the scheme utilized by Alice and Bob provide authentication? (Why or why not?) (For this part (d) you need to state what assumptions should be known or taken for your с.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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8. Alice has a message m that she wants to send to Bob. In doing so she performs the following tasks:
(1) She produces: m = E(m, K)
(2) She sends Bob: m.
Answer the following:
a. What type of cryptosystem are Alice and Bob utilizing? (Symmetric or Asymmetric?)
b. Does the scheme utilized by Alice and Bob provide confidentiality? (Why or why not?)
Does the scheme utilized by Alice and Bob provide message integrity? (Why or why not?)
d. Does the scheme utilized by Alice and Bob provide authentication? (Why or why not?)
(For this part (d) you need to state what assumptions should be known or taken for your
argument to be for' or 'against’ authentication; w/o this you have NO case, and NO credit.)
с.
Transcribed Image Text:8. Alice has a message m that she wants to send to Bob. In doing so she performs the following tasks: (1) She produces: m = E(m, K) (2) She sends Bob: m. Answer the following: a. What type of cryptosystem are Alice and Bob utilizing? (Symmetric or Asymmetric?) b. Does the scheme utilized by Alice and Bob provide confidentiality? (Why or why not?) Does the scheme utilized by Alice and Bob provide message integrity? (Why or why not?) d. Does the scheme utilized by Alice and Bob provide authentication? (Why or why not?) (For this part (d) you need to state what assumptions should be known or taken for your argument to be for' or 'against’ authentication; w/o this you have NO case, and NO credit.) с.
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