4.5-4.8

• The most interesting part of the reading was learning how Rocke Verser broke the DES encryption. It was interesting to find out that he used multiple people's computers to distribute the computer computations.
• The password security was also interesting to learn about. It seems very clever to use a one-way function.
• The hardest things to understand were the new modes of operation especially the cipher feedback. I understood the difference between the cipher feedback and the output feedback but they were both difficult to understand.