Security services and security mechanisms
Summary

Communications require the integration of different services in order to ensure adequate security of data transfers. In this chapter, we have presented the most important security services (confidentiality, integrity, availability, authentication, access control, non-repudiation and privacy) and introduced the security mechanisms needed to provide such services. Basically, these security mechanisms are: encryption, digital signatures, access control, data integrity, authentication exchange, traffic padding, routing control and notarization. Finally, we have established a connection between security services and mechanisms.