Thursday, September 19, 2013

2.9-2.11 Due September 20

1. I was having a hard time understanding Linear Feedback Shift Register Sequences. It looks like it might just be a simple formula, but I guess whats confusing me is how you can get a lot of different keys from that. I feel that a lot of keys will be similar and there won't be as much variety. But I also think I might be misunderstanding what the method is all about. If there's anything I want an example of in class, it would be this.
2. I was pretty intrigued that one-time pads are basically unbreakable. I think with the modern age of computers, that this wasn't possible, but after reading I understood that it could be possible. I still think that it might be at least plausible if you had the worlds fastest computer to try to decrypt it, but even then, it is so simple, yet so hard to break. I liked the example that FIOWPSLQNTISJQL could be either wewillwinthewar or theduckwantsout in plaintext. It shows that there are so many ways the code could be decrypted and make sense, but still not be right.

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