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1. An X.509 certificate revocation list contains a field specifying when the next such list is expected to be issued. Why is that field present?
2. Consider the following authentication protocol, which uses a classical cryptosystem. Alice generates a random message r, enciphers it with the key k she shares with Bob, and sends the enciphered message {r}k to Bob. Bob deciphers it, adds 1 to r, and sends {r + 1}k back to Alice. Alice deciphers the message and compares it with r. If the difference is 1, she knows that her correspondent shares the same key k and is therefore Bob. If not, she assumes that her correspondent does not share the key k and so is not Bob. Does this protocol authenticate Bob to Alice? Why or why not?
Determine and plot the magnitude and phase response of the filter.
Assuming that an int uses four bytes of memory, how much memory does the array use?
Write an application that displays the factorial for every integer value from 1 to 10. A factorial of a number is the product of that number multiplied by each positive integer lower than it. For example, 4 factorial is 4 * 3 * 2 * 1, or 24.
Write a program that, for any upper limit, computes all magic numbers less than that limit - A magic number is defined as a positive integer which is equal to the sum of its own factors
Determine the most general relation of m and n that guarantees the existence of a hash function in H that causes no collision when hashing [n] into [m].
Critically read your assigned project as soon as it appears in ST. If you do not understand any issue or argument ation, do not hesitate to ask its authors for their explanation. Post your question in ST.
Write a Java program that generates an array of Fibonacci numbers. Add comments to the program.
- What purposes do CPUs, memory and I-O devices individually serve in a computer system? - How do these 3 elements work together to compute? - Can a computer system function without one of these elements?
Assume a RISC machine utilizes overlapping register windows for passing parameters between procedures. Machine has 298 registers. How many register windows would be available for use?
What does the user interface look like? How will scorekeeping work? What other programming features are needed for the game?
1) Write a client method that returns a reference to the information in the node with the "largest" value in a binary search tree. the signature method is:
What errors prevent the table displayed above from being first normal form compliant?Bring the table(s) into first normal form compliance without loss of any data. Identify primary and foreign keys (when present) for all tables.
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