Question: Cryptography & Network Security 3. (10 points) Digital Signatures. (a) (4 points) Explain the similarity and differences between MACs and Digital Signatures. (b) (4 points)

Cryptography & Network Security 3. (10 points) Digital Signatures. (a) (4

Cryptography & Network Security

3. (10 points) Digital Signatures. (a) (4 points) Explain the similarity and differences between MACs and Digital Signatures. (b) (4 points) Explain why textbook RSA is insecure (existentially forgeable). (C) (2 points) State one way how to fix the vulnerability of textbook RSA

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