Wireless Mobile Internet Security

Preface xiii

About the Author xxi

Acknowledgments xxiii

1 Internetworking and Layered Models 1

1.1 Networking Technology 2

1.2 Connecting Devices 5

1.3 The OSI Model 8

1.4 TCP/IP Model 12

2 TCP/IP Suite and Internet Stack Protocols 15

2.1 Network Layer Protocols 15

2.2 Transport Layer Protocols 41

2.3 World Wide Web 47

2.4 File Transfer 49

2.5 E-Mail 50

2.6 Network Management Service 52

2.7 Converting IP Addresses 53

2.8 Routing Protocols 54

2.9 Remote System Programs 55

2.10 Social Networking Services 56

2.11 Smart IT Devices 57

2.12 Network Security Threats 58

2.13 Internet Security Threats 58

2.14 Computer Security Threats 59

3 Global Trend of Mobile Wireless Technology 63

3.1 1G Cellular Technology 63

3.2 2G Mobile Radio Technology 64

3.3 2.5G Mobile Radio Technology 67

3.4 3G Mobile Radio Technology (Situation and Status of 3G) 70

3.5 3G UMTS Security-Related Encryption Algorithm 75

4 Symmetric Block Ciphers 81

4.1 Data Encryption Standard (DES) 81

4.2 International Data Encryption Algorithm (IDEA) 99

4.3 RC5 Algorithm 108

4.4 RC6 Algorithm 123

4.5 AES (Rijndael) Algorithm 135

5 Hash Function, Message Digest, and Message Authentication Code 161

5.1 DMDC Algorithm 161

5.2 Advanced DMDC Algorithm 171

5.3 MD5 Message-Digest Algorithm 176

5.4 Secure Hash Algorithm (SHA-1) 188

5.5 Hashed Message Authentication Codes (HMAC) 195

6 Asymmetric Public-Key Cryptosystems 203

6.1 Diffieâ"Hellman Exponential Key Exchange 203

6.2 RSA Public-Key Cryptosystem 207

6.3 ElGamalâs Public-Key Cryptosystem 215

6.4 Schnorrâs Public-Key Cryptosystem 222

6.5 Digital Signature Algorithm 227

6.6 The Elliptic Curve Cryptosystem (ECC) 230

7 Public-Key Infrastructure 249

7.1 Internet Publications for Standards 250

7.2 Digital Signing Techniques 251

7.3 Functional Roles of PKI Entities 258

7.4 Key Elements for PKI Operations 263

7.5 X.509 Certificate Formats 271

7.6 Certificate Revocation List 282

7.7 Certification Path Validation 287

8 Network Layer Security 291

8.1 IPsec Protocol 291

8.2 IP Authentication Header 299

8.3 IP ESP 301

8.4 Key Management Protocol for IPsec 308

9 Transport Layer Security: SSLv3 and TLSv1 325

9.1 SSL Protocol 325

9.2 Cryptographic Computations 338

9.3 TLS Protocol 339

10 Electronic Mail Security: PGP, S/MIME 353

10.1 PGP 353

10.2 S/MIME 372

11 Internet Firewalls for Trusted Systems 387

11.1 Role of Firewalls 387

11.2 Firewall-Related Terminology 388

11.3 Types of Firewalls 392

11.4 Firewall Designs 398

11.5 IDS Against Cyber Attacks 401

11.6 Intrusion Detections Systems 404

12 SET for E-Commerce Transactions 415

12.1 Business Requirements for SET 415

12.2 SET System Participants 417

12.3 Cryptographic Operation Principles 418

12.4 Dual Signature and Signature Verification 420

12.5 Authentication and Message Integrity 424

12.6 Payment Processing 427

13 4G Wireless Internet Communication Technology 439

13.1 Mobile WiMAX 440

13.2 WiBro (Wireless Broadband) 448

13.3 UMB (Ultra Mobile Broadband) 452

13.4 LTE (Long Term Evolution) 457

Acronyms 467

Bibliography 473

Index 481