Study of applicability of Chinese remainder theorem based group key management for cloud environment

This paper reports on applicability of the Chinese Remainder Theorem (CRT) based Group Key Management (CRTGKM) for cloud environment. The results of our experiments confirm that the cloud environment group key management schemes known as ACV-BGKM and AB-GKM require high computation time for key update and key recovery processes. Therefore, to reduce the computational cost, a CRTGKM algorithm of multimedia multicast environment is applied to cloud environment based on applicability criteria. JAVA-based testbed was developed for simulation of performance of various group key management schemes and for estimation of the computation time for key update and key recovery processes.