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1. Suppose the password file of a system is available to a cracker. How much extra time does the cracker need to crack all passwords if the system is using the Morris-Thomp- son protection scheme with n-bit salt versus if the system is not using this scheme?
2. Name three characteristics that a good biometric indicator must have in order to be useful as a login authenticator.
3. Authentication mechanisms are divided into three categories: Something the user knows, something the user has, and something the user is. Imagine an authentication system that uses a combination of these three categories. For example, it first asks the user to enter a login and password, then insert a plastic card (with magnetic strip) and enter a PIN, and finally provide fingerprints. Can you think of two drawbacks of this design?
write a matlab program that accepts a code number and an input string and outputs a coded version of the string. wtite a second program that accepts a code number and a scrambled string , and decodes it, outputting the original sentence.
questiongiven a series of numbers that represent adding fuel 2 and subtracting fuel 1 determine highest distance that
You are sitting on a chair in a large room. You see an empty chair, facing you, across the room. You want to get to that chair on the other side of the room and sit in it.
under what circumstances is the objective function more important than the constraints in a linear programming model?
Write down a C++ program that has a class called flight.
Identify task you perform regularly, such as cooking, mowing the lawn, or driving a car
write a program to converts temperatures between fahrenheit and celsius. your program should print a brief message
Write a GUI-based program that manages an auction of several items.
suppose an internet service provider isp has a voice over ip voip telephone system that is manages and sells. suppose
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what are two site examples that have images or multimedia that are used effectively on the site? why do you think they
Discussion of an evolution of a health care information system, such as order entry results reporting, electronic health record, office-based medical records, or others. Include the following.
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