Abstract
Conference Title: 2014 International Conference on Information Science, Electronics and Electrical Engineering (ISEEE) Conference Start Date: 2014, April 26 Conference End Date: 2014, April 28 Conference Location: Sapporo, Japan This paper proposes a scheme that optimizes overhead resulting from revocation and/or admission of participants in one-to-many secure group meetings. The scheme requires transmission of only the identifications of involved participants to settle changes. For added security, an automatic key refreshing mechanism with no transmission overhead is suggested. Periodical refreshing of the ciphering key is used as a countermeasure against hacking.