Page 189 - DCAP403_Operating System

Operating System Sarabjit Kumar, Lovely Professional University

Notes Unit 10: System Protection

CONTENTS

Objectives
Introduction
10.1 System Protection
10.2 Goals of Protection
10.3 Access Matrix and its Implementation
10.4 Access Control
10.5 Access Control Techniques
10.5.1 Passwords

10.5.2 Memory Card
10.5.3 Smart Card
10.5.4 Hand-held Password Generators
10.5.5 Biometrics
10.5.6 Encryption
10.5.7 Token
10.5.8 Encrypted Keys
10.6 Revocation of Access Rights
10.7 Capability-based System
10.8 Summary
10.9 Keywords
10.10 Self Assessment
10.11 Review Questions

10.12 Further Readings

Objectives

After studying this unit, you will be able to:
Know system protection

Describe various goals of protection
Explain access matrix and its implementation

Define access control
Describe capability-based system

Introduction

The meaning of access control has changed over the last several years. Originally, access control
usually referred to restricting physical access to a facility, building or room to authorized persons.

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