8 Consider the following protocol: A→ KDC: KDC → A: A → B: B → A: A → B: a. Explain the protocol. b. Can you think of a possible attack on this protocol? Explain how it can be done. c. Mention a possible technique to get around the attack-not a detailed mechanism, just the basics of the idea. IDA IDB NI E(K₁ [KSIDBN₁E(Kb [KSIDA])) E(Kb. [KSIDA]) E(KS, N₂) E(K5, f(N₂))
8 Consider the following protocol: A→ KDC: KDC → A: A → B: B → A: A → B: a. Explain the protocol. b. Can you think of a possible attack on this protocol? Explain how it can be done. c. Mention a possible technique to get around the attack-not a detailed mechanism, just the basics of the idea. IDA IDB NI E(K₁ [KSIDBN₁E(Kb [KSIDA])) E(Kb. [KSIDA]) E(KS, N₂) E(K5, f(N₂))
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![8 Consider the following protocol:
A→ KDC:
KDC → A:
A → B:
B → A:
A → B:
a. Explain the protocol.
b. Can you think of a possible attack on this protocol? Explain how it can be done.
c. Mention a possible technique to get around the attack-not a detailed mechanism,
just the basics of the idea.
IDA IDB NI
E(K₁ [KSIDBN₁E(Kb [KSIDA]))
E(Kb. [KSIDA])
E(KS, N₂)
E(K5, f(N₂))](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3a50ef81-f134-4825-91cc-69e35e8a6118%2Fdab9a2cc-7703-4b7f-ac70-6200f009872d%2F4h5yxdr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8 Consider the following protocol:
A→ KDC:
KDC → A:
A → B:
B → A:
A → B:
a. Explain the protocol.
b. Can you think of a possible attack on this protocol? Explain how it can be done.
c. Mention a possible technique to get around the attack-not a detailed mechanism,
just the basics of the idea.
IDA IDB NI
E(K₁ [KSIDBN₁E(Kb [KSIDA]))
E(Kb. [KSIDA])
E(KS, N₂)
E(K5, f(N₂))
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