| Abstract: | Two ID-based authenticated group key agreement schemes, proposed by Choi et al and Duet al, are insecure against an impersonation attack and they only discussed the static group. This paper proposed a variant of BD protocol, which is fully authenticated by a proven-secure ID-based signature scheme. The protocol can resist the impersonation attack, and other security attributes are also satisfied. Compared with Choiet al and Duet al schemes, the proposed one is more efficient and applicable for dynamic groups. |
