1. I had difficulty understanding how Bob finds the value of b by looking at x mod 4. I followed the example except for that one part. I also didn't understand the Computational Diffie-Hellman Problem and the Decision Diffie-Hellman Problem. What I didn't understand was the significance or how they fit into the rest of it.
2. I was pretty interested in the name of ElGamal. All the algorithms we have covered were named after people. This looked like a code name in Spanish or something. A quick google search revealed this algorithm wasn't any different; it was developed by Dr. Taher ElGamal of Ciaro Egypt, a computer scientist.
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