Examine the establishment of session keys such that the session key is uncomputable, and unspoofable. You may wish to study systems that rely on: A shared secret Authenticated public keys (including Diffie-Hellman) A single public key One time passwords (including Lamport's Hash) To better understand how these methods are used, study their implementation in various protocols/products, such as: Kerberos V4 Kerberos V5 Secure Socket Layer Show attacks and defenses to these session key establishment protocols at all levels, including one or both of the communicating machines being compromised.