Question 4 | Computer Science homework help


Homework 4

Question 1 [8 pts]

Why does a stream cipher have to be deterministic?

Question 2 [9 pts]

What is potential problem with using the same Key and Nonce (IV) values in two different encryption operations of a stream cipher?

Question 3 [9 pts]

What are the types of stream ciphers in terms of target platform? What are the advantages of each? Provide the example implementation names for each type.

Question 4 [9 pts]

What does a Feedback Shift Register (FSR) do? What are the differences between Linear FSR and Filtered FSR?