Security Analysis of an ID-based Key Agreement for Peer Group Communication

SUMMARY Pairing based cryptography has been researched inten-sively due to its beneficial properties. In 2005, Wu et al. [3] proposed an identity-based key agreement for peer group communication from pair-ings. In this letter, we propose attacks on their scheme, by which the group fails to agree upon a common communication key. key words: group key agreement, cryptanalysis, pairings, impersonation attack. 1