Question: (10 pts) In a system, passwords are selected from four-character combinations of 26 alphabetic characters. Assume an adversary is able to attempt passwords at a

(10 pts) In a system, passwords are selected from four-character combinations

(10 pts) In a system, 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 that there is no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct password? Assuming that there is feedback to the adversary flagging an error as each incorrect character is entered, what is the expected time to discover the correct password? b

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