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What is the expected time to discover the correct password

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Reference no: EM133558438

Question  1- Explain the suitability or unsuitability of the following passwords:

a. YK 334

b. mfmitm (for "my favorite movie is tender mercies)

c. Natalie1

d. Washington

e. Aristotle

f. tv9stove

g. 12345678

h. dribgib

• Use the "comprehensive8" rule to explain suitability or unsuitability.

Question 2-Assume passwords are selected from four-character combinations of 26 alphabetic characters. Assume an adversary is able to attempt passwords at a rate of one per second. a. Assuming no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct password?

• Recall that the number of possible combinations in the case of binary alphabet {1,0} is equal to 2^N, where N is the number of alphabet positions.

• Similarly, the number of possible combinations in the case of English alphabet {a,b,c,...z} is equal to 26^N, where N is the number of alphabet positions.

• On average, the expected number of attempts to discover the correct combination is half of the total number of attempts.

Question 3-Find and view several YouTube videos explaining biometric accuracy, specifically the false match rate (a.k.a. false accept rate) vs. the false nonmatch rate (a.k.a. false reject rate) (Textbook, pp. 89-92). Identify the URLs for three videos that you think do excellent job explaining. If you had to select only one video to recommend to fellow business students, which would you choose? Why?

Reference no: EM133558438

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