Centralized and Decentralized Group Key Management

ABSTRACT Group communication has been widely deployed. To trans-mit data securely in a dynamic group we need have a secure and efficient group key management protocol. In this paper we first give an overview of centralized and decentralized group key management protocols, after that we proposed our own protocols: Fast Chinese Remaindering Group Key Protocol (FCRGK) and Hierarchical Chinese Remaindering Group Key Protocol (HCRGK). The FCRGK protocol is de-signed for moderate size group key management while the HCRGK protocol is designed for large groups. Both of our protocols have minimal group user side computation and storage requirement with a reasonable increase of computa-tion on the server (and group controllers for HCRGK).

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    ABSTRACT: Group key management is an important func-tional building block for any secure multicast architecture. Thereby, it has been extensively studied in the literature. In this paper we present relevant group key management protocols. Then, we compare them against some pertinent performance criteria.
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