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Safe Message System

Safe Message System. Conner Hansen Alex Summer Andreas Floeck. Use Case Diagram. Utility Tree (1). Security Session-level encryption (H) User-level encryption (H) Unspoofable communication path (H) User authentication (M) Reliability (Fault Tolerance) Guarantee delivery of messages (H)

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Safe Message System

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  1. Safe Message System Conner HansenAlex SummerAndreas Floeck

  2. Use Case Diagram

  3. Utility Tree (1) • Security • Session-level encryption (H) • User-level encryption (H) • Unspoofable communication path (H) • User authentication (M) • Reliability (Fault Tolerance) • Guarantee delivery of messages (H) • Logging system (L) • Available P2P network (L)

  4. Utility Tree (2) • Usage • Selectable security level (H) • Broadcast message (M) • Store message (M) • Maintainability • Updatable security algorithms (M) • Updatable network routines (M) • Bugfixes, update system (H) • Modifiability • Easy to change GUI (L)

  5. Integrated Security Attributes (Cauliflower)

  6. External Security Class (SecX)

  7. State Diagram: Program

  8. State Diagram: Session

  9. Sequence Diagram: Send Message

  10. Sequence Diagram: Receive Message

  11. What did we learn?

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