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  • List ways in which secret keys can be distributed to two communicating parties.
  • What is the difference between a session key and a master key?
  • What is a key distribution center?
  • What entities constitute a full-service Kerberos environment?
  • In the context of Kerberos, what is a realm?
  • What are the principal differences between version 4 and version 5 of Kerberos?
  • What is a nonce?
  • What are two different uses of public-key cryptography related to key distribution?
  • What are the essential ingredients of a public-key directory?
  • What is a public-key certificate?
  • What are the requirements for the use of a public-key certificate scheme?
  • What is the purpose of the X.509 standard?
  • What is a chain of certificates?
  • How is an X.509 certificate revoked?