Monday, September 20, 2010

Sections 4.1, 4.2, and 4.4, due 20 September 2010

What was the most difficult part of the material for you?
I had some trouble understanding the proof about DES not being a group--that double encrypting with two keys was not the same as encrypting with a third key.

What was the most interesting part of the material? How does this material connect to something else you have learned in mathematics? How is this material useful/relevant to your intellectual or career interests?
I thought it was interesting that a lot of the structure of DES ended up depending on the technology available at the time, particularly the limits on how much information could be put on a computer chip.

No comments:

Post a Comment