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The security services of authentication and confidentiality are of significant importance to ensure secure communication in any network. The decentralized nature and the broadcast medium of communication of wireless ad hoc networks results in unique challenges in realizing the services of authentication and data confidentiality. In this paper, the authors first highlight the issues relating to authentication and confidentiality in wireless ad hoc networks and identify the characteristics of these services. Subsequently, they discuss the security mechanisms proposed for authentication and confidentiality in wireless ad hoc networks.
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