Essence of a digital signature is ensures authentication

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Reference no: EM13336492

Instructions:

1. The essence of a digital signature is that it ensures authentication. Explain how and why it does that.
2. What is the role of the Certificate Authority in a PKI? How are certificate authorities authenticated?
3. Why is randomness so important to key generation? What does a truly random system ensure?
4. What is a the possible advantage of using a joint public-key/ secret-key approach to key distribution?
5. Why is the ability to disguise the content of messages an important part of modern business practice?
6. Why are authentication and integrity checking such important dual functions? What would be the outcome if one or the other was missing?
7. What is the role of digital signatures in modern organizations? What would be the impact on e-commerce if it were not possible to authenticate an electronic document?
8. Key distribution is an important part of both kinds of encryption. What are the chief concerns associated with distributing keys in a secret key and in a public key cryptosystem? What causes each?
9. Elliptic curve cryptography appears to provide a very robust solution. However, it is not currently the system of choice. Why is that the case and why is that justification logical?
10. Having a message and its encrypted version in your possession is an easy way to break a cipher. Why is that true and what should the approach be if only the cipher-text was available?

Reference no: EM13336492

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