Sample Exam Paper[Back] The following is sample example paper (Note: this was not an open book test). Question 1Part A Bob and Co is an ISP, and they have recently been hacked, and their passwords released to the Internet. Their lead Information Officer explains that the passwords use eight character passwords and were salted with a three-character hex value. The regular expression to filter the passwords defines the range of [a-z0-9].
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Part B The following is a password entry, outline the information that can be gained from this password entry and the process that is used when the user logs in. If the salt was lost, outline if it would be possible to recover the original password. For the size of salt used, how could you estimate the increase in difficulty in cracking the salted password? [5] Outline answers:
Question 2
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Question 3
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