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csce522-test1-solution

csce522-test1-solution - Test 1 Question 1 Briefly explain...

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Test 1
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Question 1 Briefly explain the three security objectives . Confidentiality : prevent/detect/deter improper (unauthorized) disclosure of information Integrity : prevent/detect/deter improper (unauthorized) modification of information Availability : prevent/detect/deter improper (unauthorized) denial of access to the information Give an example of each objective and the importance of satisfying that objective in the domain of your own personal computer. CSCE 522 - Farkas 2 Lecture 1
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Question 2. What is the key distribution problem of secret-key encryption ? Keys have to be distributed in a secure channel Large number of keys n(n-1)/2 What is the key distribution Mproblem of secret-key encryption ? Needs reliable channel CSCE 522 - Farkas 3 Lecture 1
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Question 2. Which key distribution problem does the Diffie-Hellman Key Exchange solve? Give a brief overview how the Diffie- Hellman protocol works. Secret key distribution problem without a secure channel Requires no prior communication between A and B Security depends on difficulty of computing x given X=g x mod n
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