QUESTION

(a) Using the Luhn 10 check formula verify whether the following account number is compliant: 49927398716. Show details of your workings

(b) Why is it advisable to provide a virtual keypad to the user for entering the password or any sensitive information such as credit card numbers?

(c) The .NET framework provides several hashing algorithms in the System.Security.Cryptography namespace namely the SHA1CryptoProvider, and the SHA1Managed. Distinguish between the CryptoProvider and the Managed classes. Your answer should include advantage(s) and/or disadvantage(s) of each

(d) (i) Why the Random class in the .NET framework is not suitable for generating random bytes for cryptography purposes?

(ii) Name the class that is typically used for generating random bytes for cryptography purposes. Are the values generated truly random? Justify your answer