Microsoft PowerPoint Presentation

Table of Contents

PPT Slide

PPT Slide

PPT Slide

Secure Communication

Security Requirements

Security Primitives

Symmetric and Public Cryptography

Diffie-Hellman Key Exchange

Digital Signatures

Certificates and CAs

Building Secure Group Communication Systems

Group Key Management

Group Key Management (cont.)

Group Key Management (cont.)

Remember Diffie-Hellman Key Exchange

Group Diffie-Hellman (GDH)

Cliques GDH – Merge

Cliques GDH – Merge (cont.)

Cliques GDH – Merge (cont.)

Cliques GDH -Partition

Fault Scenario

Basic Algorithm based on GDH Merge

Encryption

Authentication in Group Communication Systems

Authentication Mechanisms - SecurID

Authentication Using SecurID

Access Control in Group Communication Systems

Security Implementation in Spread

Email: jonathan@cnds.jhu.edu

Home Page: http://www.cnds.jhu.edu/courses/cs437/

Other information:
Week 11 Security for Distributed Systems Fall 2001 Distributed System CS 337/437