Building Blocks II: Security and Multimedia

10/23/98


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Table of Contents

Building Blocks II: Security and Multimedia

Security

Breaches and Defenses

Encryption

Desirable Features of a Cryptosystem

Authentication

Example from Tanenbaum

A Faster Version?

The Reflection Attack

Preventing Replay Attack

Using an Authentication Server

Public vs. Private Key Systems

Proving Sending and Receiving

Kerberos

More Extensive Security

Media Representation and Use

Media Representation

Compression Techniques

Compression Techniques

ISO MPEG (Motion Picture Experts Group)

MPEG Flavors

How MPEG Video Works

MPEG Frame Structure

The Coding Process

Dealing with Macroblocks

Network Issues

Transport Issues

CBR Circuits

VBR Circuits

Jitter Control

End System Resource Allocation

Scheduling for Real Time

Admission Control

Deadlines vs. Priorities

Making Priorities Work

Priority Inversion

Solution: Priority Inheritance

Example: Mercer and Tokuda

Author: Allan Fisher