CSC 607 Week 1 Homework Assignment 1
Describe the goals of computer/network security
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2. Describe the differences between a threat and a vulnerability
3. You receive an email from what appears to be Facebook asking you to update your personal information. You click on the link and are presented a Facebook login. You are taking CSC609 and recall your professor warned you about this. What type of attack is this?
4. What provides us the strongest protection against attack?
5. Explain the differences between Symmetric Key Cryptography and Asymmetric Key Cryptography
6. There is a total of 25 students in the class who I the instructor wish to communicate with securely as well as students communicating with each other.. How many encryption keys would I need for
7. Suppose you and I decide to use SKC in exchanging this homework. What vulnerability would an attacker exploit to defeat this?
8. Using Public Key Cryptography (PKC), describe how you would exchange this assignment encrypted (ie. You submit, I return graded)
9. How would I securely distribute a homework assignment to the whole class using PKC?
11. Describe how just you and I can securely exchange a symmetric key
12. Suppose you and your team mates wish to authenticate emails to ensure that the email you receive actually comes from the person sending it. Describe how you might accomplish this
13. What type of function is used to ensure the integrity of the message itself?
14. Describe the two different types of ciphers that we discussed in class. Describe the goals of these particular ciphers
15. True or False. In PKC, the private key is never transmitted
16. Encrypt the following using the substitution cipher E(pi) = pi + 6
17. Describe one of the characteristics a cryptanalyst looks for in a substitution cipher
18. Encrypt the plain text in question 15 using a one-time pad (Vigenère Tableau) using the following key:
we the people of the united states, in order to form a more perfect union
20. What capability ensures the integrity of a message?
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