Slide 1INSTITUTE FOR CYBER SECURITY 1 Access Control Prof. Ravi Sandhu Executive Director and Endowed Chair Institute for Cyber Security University of Texas at San Antonio…

Slide 1ISA 662 SSL Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu SECURE SOCKETS LAYER (SSL) layered on top of TCP SSL versions 1.0, 2.0, 3.0, 3.1 Netscape protocol later refitted…

Slide 1ISA 662 Internet Security Protocols Kerberos Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu 2000-2004 SYSTEM MODEL NETWORK WORK- STATIONS SERVERS WS NFS GOPHER LIBRARY…

Slide 1ISA 662 IKE Key management for IPSEC Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu 2000-2004 INTERNET KEY EXCHANGE (IKE) Hybrid protocol ISAKMP SKEME PHOTURIS SKIP MKMP…

Slide 1SSL Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu 2002 SECURE SOCKETS LAYER (SSL) layered on top of TCP SSL versions 1.0, 2.0, 3.0, 3.1 Netscape protocol later refitted…

Slide 1SSL Trust Pitfalls Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu SERVER-SIDE SSL (OR 1-WAY) HANDSHAKE WITH RSA Record Protocol Handshake Protocol Slide 3 3 © Ravi Sandhu…

Slide 1Asymmetric Digital Signatures And Key Exchange Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu DIGITAL SIGNATURES Signature Algorithm S Verification Algorithm V Plain-…

Slide 1ISA 662 RBAC-MAC-DAC Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu RBAC96 ROLES USER-ROLE ASSIGNMENT PERMISSIONS-ROLE ASSIGNMENT USERSPERMISSIONS... SESSIONS ROLE HIERARCHIES…

Slide 1INFS 767 Fall 2003 Administrative RBAC ARBAC97 Prof. Ravi Sandhu Slide 2 SCALE AND RATE OF CHANGE roles: 100s or 1000s users: 1000s or 10,000s or more Frequent changes…

Slide 1SSL Trust Pitfalls Prof. Ravi Sandhu Slide 2 2 © Ravi Sandhu 2002 THE CERTIFICATE TRIANGLE user attributepublic-key X.509 identity certificate X.509 attribute certificate…