Outline for May 24, 2005

1. ORCON
   1. Originator controls distribution
   2. DAC, MAC inadequate
   3. Solution is combination
2. Role-based Access Control (RBAC)
   1. Definition of role
   2. Partitioning as job function
   3. Containment
3. What is a cryptosystem?
   1. (M, C, K, D, E)
   2. Attacks: known ciphertext, known plaintext, chosen plaintext
4. Classical Ciphers
   1. Transposition ciphers
   2. Substitution ciphers
   3. DES
5. Public-Key Cryptography
   1. Properties
   2. Diffie-Hellman
   3. RSA
6. Cryptographic Hashes
7. Access Control Mechanisms
   1. Access control lists
   2. Capabilities
   3. Locks and Keys
   4. Type checking
   5. Ring-based access control
   6. PACLs