In this module, you learned that random numbers (or, at least, pseudorandom numbers) are essential in cryptography, but it is extremely difficult even for powerful hardware and software to generate them. Go online and conduct research on random number generators. What are the different uses of these tools besides cryptography? How do they work? Explain your answer using your own words in 2-3 paragraphs0

 One-way function: The system stores only the value of a function based on the

user’s password.When the user presents a password, the system transforms

that password and compares it with the stored value. In practice, the system

usually performs a one-way transformation (not reversible) in which the

password is used to generate a key for the one-way function and in which a

fixed-length output is produced.

• Access control: Access to the password file is limited to one or a very few

accounts.

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Task 2:

Do the following review questions:

11.1 List and briefly define three classes of intruders.
11.2 What are two common techniques used to protect a password file?
11.3 What are three benefits that can be provided by an intrusion detection system?
11.4 What is the difference between statistical anomaly detection and rule-based intrusion detection?
11.5 What metrics are useful for profile-based intrusion detection?
11.6 What is the difference between rule-based anomaly detection and rule-based penetration identification?
11.7 What is a honeypot?
11.8 What is a salt in the context of UNIX password management?
11.9 List and briefly define four techniques used to avoid guessable passwords.

 

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