Table of content: 1. Introduction and literature survey 1.1 Intrduction 1.2 Computer imaging system 1.3 Attacks, services, and mechanisms 1.4 Security services 1.5 Attacks 1.6 Security attacks 1.7 The aim of thesis 1.8 Related literature & historical review 1.9 Scope of thesis 2. Theoretical principles and measures 2.1 Introduction 2.2 Image file formats 2.3 Key security 2.4 Sy…