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Question 1. What are the essential ingredients of a symmetric cipher?
Question 2. What are the two basic functions used in encryption algorithms?
Question 3. How many keys are required for two people to communicate via a symmetric cipher?
Question 4. What is the difference between a block cipher and a stream cipher?
Question 5. What are the two general approaches to attacking a cipher?
Question 6. Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?
Question 7. What is triple encryption?
Question 8. Why is the middle portion of 3DES a decryption rather than an encryption?
Define the get_last_three_letters() function which is passed list of strings as parameter. The string returned by function should be in lowercase characters
Methods of defense and provide examples
Write a two-tape deterministic Turing machine using JFLAP to sort an input string w of the form (a+b)*.
Discuss social engineering attacks based on the provided techniques. Discuss appropriate security awareness training that will offset the identified attacks.
Write a program that creates a linked list object of 10 characters and creates a second list object containing a copy of the first list, but in reverse order.
Suppose that a vector processor has a memory system in which it takes 10 cycles to load a single 64-bit word from memory. How many memory banks are needed so that a stream of loads can, on average, require only one cycle per load?
Convert the character in R0 from upper-case to lower-case by operating on it, NOT replacing it. The lower-case converted character should stay in R0.
Research an organization that was breached or had a security intrusion (an event that occurred within the past 13 weeks). Explain what occurred, the impact.
You are using vim and are in editor mode. You've finished editing the file and want to save the changes and leave vim.
The valid option codes are four-character alphabetic codes and should be matched against a list of valid codes. Prepare a test plan for the test of the option code field during data entry.
Write down the normalized entities in the correct format.
Design a first-order highpass IIR digital filter for each of the following normalized 3-dB cutoff frequencies.
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