期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：68
期号：1
出版社：Journal of Theoretical and Applied
摘要：The process of transferring messages from a member to another member securely within a network is known as secure group communication. Key management is an important primitive to ensure this, as it provides a secure method for cryptographic keys creation, distribution and management. Group key establishment/management methods are key management�s two sides. Group members use group key (GK) for encryption/decryption of messages in group communication. Communication needs quality and security for better performance and for acceptance of users and client companies. Diffie-Hellman (DH) was the first published public key algorithm that is used for secure key exchange mechanism. The purpose of algorithm is used to enable users to security exchange a key that can be used for subsequent encryption. Earlier schemes used only one group controller and were thus affected by single point failure (1-affects-n problem). To prevent this, a new technique where a control group generates the group key is introduced based on the nodes capability within two hops. In this scheme, direct trust and indirect trust is computed to identify Cluster Heads (CH) and the concept of auxiliary cluster head is introduced for effective key management.
关键词：Mobile ad hoc networks (MANETs); Dynamic Source Routing (DSR); Malicious Nodes; Clustering; Key Management
