A Novel Group Key Transfer Protocol based on Secret Sharing
Key transfer protocols use the key generation center for generation and transfer of all the session keys to the users. A key generation center generates a private key for each of the group members. In this paper, the authors discuss an improved authenticated group key transfer protocol based on secret sharing that depends on a key generation center (KGC) . The secret sharing scheme is based on the Chinese Remainder Theorem. The KGC broadcasts the group key information to all the group members. The authorized users can recover the group key whereas the unauthorized cannot. This protocol assures both confidentiality and authentication. These are analyzed in detail further.
Keywords: Group key transfer protocol, group key, session key, secret sharing schemes, confidentiality
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