Public-key cryptography and message authentication

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Reference no: EM132443208

1. List three approaches to message authentication.

2. What is a message authentication code?

3. What properties must a hash function have to be useful for message authentication?

4. In the context of a hash function, what is a compression function?

5. What are the principal ingredients of a public-key cryptosystem?

6. List and briefly define three uses of a public-key cryptosystem.

7. What is the difference between a private key and a secret key?

8. What is a digital signature?

Reference no: EM132443208

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