Answered: Alice 1. GET Bob's home page 2. Fake…

Alice 1. GET Bob's home page 2. Fake home page with ET 3. E-(Message) Trudy 4. EB(Message) Figure 8-25 A way for Trudy to subvert public-key encryption. Bob

Fundamentals of Information Systems

8th Edition

ISBN:9781305082168

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter4: Telecommunications And Networks

Section: Chapter Questions

Problem 5SAT

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Question

Consider the failed attempt of Alice to get Bob’s public key in
Fig. 8-25 . Suppose that Bob and Alice already share a
secret key, but Alice still wants Bob’s public key. Is there now a
way to get it securely? If so, how?

Alice
1. GET Bob's home page
2. Fake home page with ET
3. E+(Message)
Trudy
4. Eg(Message)
Figure 8-25
A way for Trudy to subvert public-key encryption.
Bob

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