In Relation To Key Distribution Explain How Keys Are Distributed Using: Cryptography Assignment, UCD, Ireland
| University | University College Dublin (UCD) |
| Subject | Cryptography |
1. In relation to key distribution explain how keys are distributed using
a) a Key Distribution Centre.
b) a public key authority
2. With reference to encryption systems, define the properties of Completeness, and Avalanche and Confusion and Diffusion?
3. Alice wishes to send Bob a message m in an email such that Bob is certain Alice is the sender. Explain the steps in detail.
4. Using appropriate diagrams differentiate between a remote access VPN and a site-to-site VPN. Explain why VPNs might be preferred over leased lines.
5. IPSEC is a protocol suite that can be used to secure data traveling over an insecure medium. Explain the two different headers used by IPSEC and the services provided by both.
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