5. Assume that there are 10,000 users in a system and that their passwords are limited to the use of 95 printable ASCII characters. Moreover, all passwords are exactly 10 characters in length. (Please show all steps while answering the questions below.) a. How many different passwords are possible? b. Consider a cracker capable of computing 6,400 hash values a second, and suppose that all 10,000 passwords happen to be from a dictionary that contains 1 million popular passwords. How long will it take to crack the passwords using this dictionary if the system isnt using any salt values? Answer in seconds. c. Answer part b assuming that the system is using a unique salt for each user (stored as plaintext in the password file). Answer in hours. d. Now, assume the passwords arent dictionary passwords. How long will it take even if the system isnt using any salt values? Answer in hours.