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Why are timestamps used in the Kerberos protocol?
Assume that Alice shares a secret s with her company's server computer. When Alice is on a trip, she tries to store an important message in the CEO's account directory. This message needn't be encrypted since confidentiality is not important here, but the CEO needs to be guaranteed that the message really is from someone who knows the secret s (e.g. Alice) when the CEO opens his/her computer the next day. A naïve protocol to achieve this may look like this:
Alice-->Server: "This is Alice, I have an important message to forward to the CEO"Server-->Alice: "OK, please encrypt R" (where R is a random nonce)Alice-->Server: "Es(R)" (that is, R is encrypted with the secret s)Server-->Alice: "Please send the message"Alice-->Server: "The CEO needs to attend a meeting in Liverpool on May 1, 2006"The server stores this message in the CEO's directory
Is this protocol secure? If not, how do you feel it could be modified to make it so?
Complete the design and implementation of the class customerType defined in the Programming Example Video Store. b. Design and implement the class customerListType to create and maintain a list of customers for the video store.
Write a program to calculate a person's net pay after subtracting federal income tax.The program should ask the user to enter the person's name, social security number, gross pay, and the number of dependents.
create a program that counts the number of numbers between 150 and 200. This is what I have so far, but it's not working. It is an array of 500 number, I did not include the array because of obvious reasons.
Write a program that allows a user to enter 10 floating point values into an array. Then, in a loop, the program should prompt the user for a desired precision and subsequently display each value to the correct precision.
Add comments to the code. It should be clear, based on your comments, what each line (or set of lines) does in the program.
Create a main() function that allows you to enter 10 PhoneCalls into an array. If a PhoneCall is already been placed to a number, do not allow a second PhoneCall to the same number
If the following C++ code is valid, show the output. If it is invalid, explain why.
For a square nXn a array, a saddle point is an element that is the maximum in its row and the minimum in its column.
Write a C++ program containing a linked list of 10 integer numbers. Have the program display the numbers in the list.
Write a C program to solve the quadratic equation of rocket launch by computing the roots (t1 and t2) of that quadratic equation: gt2 + vt + l = 0 (or) for simplicity ax2 + bx + c = 0. Get the values of g, v, and l from the user. The program should d..
Write a webservices application that does a simple four function calculator
A constructor that will take a single integer argument representing a whole number of feet • A constructor that will take two integer arguments representing feet and inches respectively • A constructor that will take three integer arguments represent..
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