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1.Consider the following threats to Web security and describe (in detail) how each is countered by a particular feature of SSL:a. Brute-Force Cryptanalytic Attack: An exhaustive search of the key space for a conventional encryption algorithm.b. Replay Attack: Earlier SSL handshake messages are replayed.c. Man-in-the-Middle Attack: An attacker interposes during key exchange, acting as the client to the server and as the server to the client.d. Password Sniffing: Passwords in HTTP or other application traffic are eavesdropped.e. IP Spoofing: Uses forged IP addresses to fool a host into accepting bogus data.f. IP Hijacking: An active, authenticated connection between two hosts is disruptedand the attacker takes the place of one of the hosts.g. SYN Flooding:An attacker sends TCP SYN messages to request a connection but does not respond to the final message to establish the connection fully. The attacked TCP module typically leaves the "half-open".2.Suppose H(m) is a collision-resistant hash function that maps a message of arbitrary bit lengthinto an n-bit hash value. Is it true that, for all messages x, x' with x ≠ x', we have H(x) ≠ H(x')?Explain your answer.3.Perform encryption and decryption using the RSA algorithm (Figure 3.10) for the following:p = 11; q = 13; e = 11; M = 7. Make sure you show both the resulting ciphertext and plaintextequations for encryption and decryption, respectively. Show your work!4.Consider a Diffie-Hellman scheme with a common prime q = 11 and a primitive root α = 2.a. If user A has public key YA = 9, what is A's private key XA? Show your work!b. If user B has public key YB = 3, what is the shared secret key K? Show your work!5.Consider a one-way authentication technique based on asymmetric encryption:A à B: IDAB à A: E(PUa, R2)A à B: R2a. Explain the protocol.b. What type of attack is this protocol susceptible to?6.In the context of Kerberos, answer all of the following questions:a. When Bob receives a ticket from Alice, how does he know it is genuine?b. When Bob receives a ticket from Alice, how does he know it came from Alice?c. Alice receives a reply, how does she know it came from Bob (that it's not a replay of anearlier message from Bob)?d. What does the ticket contain that allows Alice and Bob to talk securely?7.Is it possible in SSL for the receiver to reorder SSL record blocks that arrive out of order? If so,explain how it can be done. If not, why not?
The binary sequence s = 111111111000000111111111111111100001 = 1^9,0^6,1^16,0^4,1 was generated by a stationary two-state Markov chain with transition probabilities p1|0 = 2p0|1 = 0.2. a Shannon-Fano-Elias code or an arithmetic code for 3-bit symb..
Write a program that reads in the length and width of a rectangular yard (in meters) and the length and width of a rectangular house (in meters) placed in the yard. Your program should compute the time (in minutes) required to cut the lawn around ..
You visit retail establishment, shop around, and ultimately carry several products to one of the point of sale. Document each main events just explained and describe them in terms of PCI compliance standard.
Write down most significant factors contributing to MMCC's success with its new, secure, self-managed network? Describe the reasons for your choices.
1)if circuits provide guaranteed bandwidth to users ,why is packet switching preferred over such as internet 2)how do circuit and packet switched networks deal with overload ? what is the user experience as demand progressively increases on both ty..
1. The debate about centralization and decentralization is heating up again with the advent of network computing and the increasing use of the Internet. Does the Internet make this debate more relevant? If you find any interesting articles on t..
Q8. Farmer Bob, Farmer Jane and Farmer Jose run a cow farming co-op. For every cow they keep the cow's name, age (or date of birth), breed and numbered plastic ear tag. The each of the three farmers own many cows and share some of the cows wit..
Find the standard SOP (sum of product) and POS (product of sum) expression of the subsequent Boolean function. F(A,B,C,D) = A(B' + CD') + A'BC'
Prompt the user two STRING inputs of time instances in the format of: YYYY/MM/DD HH:NN:SS. Use string manipulations to figure out the units (year, minute, etc.). The output is the total elapsed time in seconds between the two time inputs.
Design a program that keeps track of ticket sales for an auditorium. A concert will be performed over three days in an auditorium with three levels of seating floor, balcony, and upper balcony. There are 20 seats for each type of seating. Write a pro..
Implement a program using function for a defined task. Initial data is read from a file and added from keyboard. Program has to output resulting and initial data.
Write one or two statements that make this variable's field's values consistent with the mathematical notion of "origin".
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