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1.Implement the attacks described in this chapter for the shift cipher and the Vigenre cipher.
2. Show that the shift, substitution, and Vigenre ciphers are all trivial to break using a chosen-plaintext attack. How much chosen plaintext is needed to recover the key for each of the ciphers?
3. Assume an attacker knows that a user's password is either abcd or bedg. Say the user encrypts his password using the shift cipher, and the attacker sees the resulting ciphertext. Show how the attacker can determine the user's password, or explain why this is not possible.
A video made by Misha Glenny titled, "Hire the hackers!" is the question. Write a review about the points mentioned in the video. The review must be at least 800 words.
A wireless laptop is trying to connect to a printer via a LAN. The laptop can find the printer, but cannot connect to it. How would you best troubleshoot the problem?
For any open source project, try to find the configuration management system log. Find significant features of the maintained configuration system for the project. (You can find many open source projects at www.sourceforge.net.)
What should be considered when designing a wireless network?
Tim O'Reilly, "Web 2.0 is a loose collection of information technologies and applications, plus the web that use them" (Rainer, p. 174). Some 2.0 web sites are AJAX, tagging, blogs, and wikis. AJAX: "is a Web development technique that allows p..
What is the difference between mass surveillance and targeted surveillance?
Explain what is meant by the term foreign key.Explain what is meant by the term foreign key.
What is the difference between Prepared Statement and Statement in java?
If her interest rate is 7% compounded annually, what is the ownership cost of the vehicle over 3 years? Six years
Imagine an online registration application. Use your registration form as starting point for your analysis. Identify the entities that a potential database will need, along with their attributes. Try to establish unique identifiers for the records in..
Let's start at the very beginning. What is a file? Why is it necessary to "open" and "close" a file? What happens when we do that? What is "writing" to a file? What is the difference between writing to a sequential file and appending to it? How can t..
Make sure that Windows Server 2008 or Windows Server 2008 R2 is running properly on the computer before you begin the upgrade process. Check the Event Viewer console for warnings and errors.
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