1. I was a little bit confused about the ElGamal signature scheme. Also, I'm really wondering how to escape "blind signatures." They seem necessary, and I'm interested in knowing how to safeguard against the dangers involved in them. One other thing I didn't understand was on page 246 when it explains why s/k is the signed message. After the therefore, it says k^(ed)m^(d)/k=m^d (mod n). I don't see how this is justified.
2. I quite enjoyed reading about birthday attacks on signatures. What a clever way to use probability to get Alice to sign a fraudulent document. I was even more excited about Alice's decision to add a comma. Poor Fred thought he had her fooled, but the joke's on him. He should have paid more attention in English class. RSA signatures were also interesting.
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