Dynamic ad hoc networks (DANETs) are similar to mobile ad hoc networks (MANETs), but the network density and mobility change significantly over time and space. Many researchers have proposed types of key management schemes for ad hoc networks. In this chapter, we provide a timely survey of the existing solutions and describe the state-of-the-art techniques for DANETs security key management, where we particularly consider those more suitable for DANET. Following a brief discussion on the limitations and challenges of key management in DANET, we introduce the main and desirable features and evaluation metrics of key management. Then a categorization of existing key management systems is presented. Finally, we conclude this chapter with a summary of further developments.

Chapter Contents:

• 1.1 Introduction
• 1.1.1 Dynamic ad hoc networks
• 1.1.2 Challenges of key management
• 1.2 Background
• 1.2.1 Desirable features for DANETs
• 1.2.1.1 Infrastructure-less and distributed architecture
• 1.2.1.2 Network topology and density
• 1.2.1.3 Network formation
• 1.2.1.4 Resource limitations
• 1.2.1.5 Node mobility
• 1.2.1.6 Inherent security problems
• 1.2.2 Evaluation metrics of key management
• 1.2.2.1 Applicability
• 1.2.2.2 Complexity
• 1.2.2.3 Robustness
• 1.2.2.4 Scalability
• 1.2.2.5 Security
• 1.3 Categories of key management schemes
• 1.3.1 Contributory key management schemes
• 1.3.2 Distributive key management schemes
• 1.3.2.1 Public key schemes
• 1.3.2.2 Symmetric schemes
• 1.4 Further developments
• 1.5 Conclusion
• References

Inspec keywords: telecommunication security; mobile ad hoc networks; mobility management (mobile radio)

Other keywords: MANET; network density; security key management; dynamic ad hoc networks; DANET; mobile ad hoc networks

Subjects: Mobile radio systems; Network management