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Diffie-Hellman
You have agreed with your friend X that you will use the Diffie-Hellman public-key algorithm to exchange secret keys. You and X have agreed to use the public base g = 19 and public modulus p = 739. You have secretly picked the value SA = 5. You begin the session by sending X your calculated value of TA. X responds by sending you the value TB = 167. What is the value of your shared secret key? Show all your work.
What RC4 key value will completely invert S after the initial permutation (so that S[0] = 255, S[1] = 254, ..., S[254] = 1, S[255] = 0)? Show your work. (Explain how you got this.)
For each of the three (3) or more malicious attacks and / or threats that you identified in Assignment 1, choose a strategy for addressing the associated risk (i.e., risk mitigation, risk assignment, risk acceptance, or risk avoidance). Explain your ..
If you receive the ciphertext message YPHDCRPBEQTAA, decrypt to recover the plaintext. What is the decryption function, and the recovered plaintext? What type of cipher is this?
Assume you are introduced to a assignment manager, who does not have authority to give a pay raise or promote a project team member.
Alan and Beatrice are both users of (PKI)also called public key infrastructure. Describe how they use their keys to communicate when Alan sends a private message to Beatrice
What factors might an organization consider when choosing to implement an AD-integrated DNS zone versus a traditional zone? Describe a scenario in which it would be preferable
If IPSec provides security at the network layer, why is it that security mechanisms are still needed at layers above IP?
An earlier version of WTLS supported a 40-bit XOR MAC and also supported RC4 stream encryption. Show that this scheme doesn't give message integrity protection.
Consider following protocol for sending an encrypted message from Alice to Bob in presence of Key Distribution Center (KDC).
Question on Security infrastructure and protocols
Identifying and explaining how the breach occurred and identifying and discussing known or suspected losses of confidentiality, integrity, and availability for information and/or information systems
Discuss some of the problems NATs create for IPsec security. Solve problems by using IPv6? Why deployment of IPv6 has been slow to date. What is needed to accelerate its deployment
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