What is Asymmetric Key Cryptography or Public Key Cryptography

The aim of this chapter is to give a thorough overview of secure remote reconfiguration technologies for wireless embedded systems, and of the communication standard commonly used in those systems. In particular, we focus on basic security mechanisms both at hardware and protocol level. We will discuss the possible threats and their corresponding impact level. Different countermeasures for avoiding these security issues are explained. Finally, we present a complete and compact solution for a service-oriented architecture enabling secure remote reconfiguration of wireless embedded systems, called the STRES system.