Performance Evaluation for Group Key Rekeying
Tsukasa Igarashi · 2004
This paper evaluated the performance for group key rekeying that is important for computer security. Group key is the encryption key that used among particular group members and rekey means to change from an old group key to a new one. There are three rekeying processes proposed: immediate, batch and periodic. Immediate rekeying is a process that rekeying is done once someone joins or leaves a group. Batch rekeying is a process that is used when the total number of members that joins or leaves a group increases. Periodic rekeying is a process that rekeying is used in the constant period, regardless whether the total number of members joins or leaves a group. As a result of comparison of these three rekeying processes, according to the condition, we need to change rekeying processes.