Cloud Computing Security

CHAPTER 32

Side-Channel Attacks and Defenses on Cloud Traffic

Wen Ming Liu

Concordia University

Montreal, Quebec, Canada

Lingyu Wang

Concordia University

Montreal, Quebec, Canada

CONTENTS

32.1  Introduction

32.1.1  Motivating Example

32.2  Basic Definitions

32.2.1  Traffic Padding

32.2.2  Privacy Properties

32.2.3  Cost Metrics

32.3  Rounding and Random Padding

32.4  Ceiling Padding Approach

32.4.1  Challenges

32.4.1.1  Challenge 1

32.4.1.2  Challenge 2

32.4.1.3  Feasibility of Algorithm Design and Privacy Property Extension

32.4.2  Evaluation

32.4.2.1  Communication Overhead

32.4.2.2  Processing Overhead

32.4.2.3  Computational Overhead

32.5  Random Ceiling Padding Approach

32.5.1  Challenge 3

32.5.2  The Random Ceiling Padding Scheme

32.5.3  Evaluation ...