1 What is a prime number?
2 What is the meaning of the expression a divides b?
3 What is Euler’s totient function?
4 The Miller-Rabin test can determine if a number is not prime but cannot determine if a number is prime. How can such an algorithm be used to test for primality?
5 What is a primitive root of a number?
1 Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?
2 What is the difference between statistical randomness and unpredictability?
3 List important design considerations for a stream cipher.
4 Why is it not desirable to reuse a stream cipher key?
5 What primitive operations are used in RC4?