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Because of the known risks of the UNIX password system, the SunOS-4.0 documentation recommends that the password file be removed and replaced with a publicly readable file called /etc/publickey. An entry in the file for user A consists of a user's identifier IDA, the user's public key, PUa, and the corresponding private key PRa.This private key is encrypted using DES with a key derived from the user's login password Pa. When A logs in, the system decrypts E(Pa, PRa) to obtain PRa.
a. The system then verifies that Pa was correctly supplied. How?
b. How can an opponent attack this system?
Find the truth table that describes the following circuit:
Write a 500-word paper that explains what an RFC is, what an Internet Draft is, what organization produces these documents, and the process that is followed to produce these documents.
Look through a newspaper and circulars for advertisement for training and education in security- and technology-related areas. What are the costs of the advertised security training? Network certification ? General computer training?
Suppose the government imposes tax cuts for 95% of all households. How does this affect your firm? To what extent is your organization's financial health affected by fiscal and monetary policy? Please give at least one specific example.
What tool/scan be used to document the overall promotional objectives; identify, plan and schedule promotional activities in action plans and ensure that time lines and costs for promotion of activities are realistic? What should be included in th..
From the e-Activity, analyze the multiplexing techniques of DSL and cable modem Internet and suggest the one you prefer. Explain your decision.
In general ask the user for 2 numbers, calculate the product of the two numbers (mul) and store product in memory. Then divide the 2 numbers entered and store the quotient and remainder in memory.
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Create a three-function calculator for old-style English currency, where money amounts are specified in pounds, shillings, and pence.
There was an old woman who swallowed a fly. I don't know why she swallowed that fly, Perhaps she'll die. There was an old woman who swallowed a spider, That wriggled and wiggled and jiggled inside he She swallowed the spider to catch the fly, I do..
What is the term used for describing the judgmental or commonsense part of problem solving? What stage of the manufacturing process has been described as "the mapping of function onto form"? What was originally called the "imitation game" by its cre..
•Discuss some ways in which time-dependent signals can be classified. •Discuss what is meant by "basic signal representation" and the advantage of this type of representation.
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