Security weaknesses of two-parity ID-based authenticated key agreement protocols

We analyse the existing ID-based authenticated key agreement protocols, and find out that several proposed protocols of this type do not satisfy related security attributes. This paper reviews Wang´s, He´s and Guo´s protocols sequentially, and shows key compromise impersonation attack on Wang´s scheme, ephemeral secrets reveal attack on He´s scheme, key reveal attack and ephemeral secrets reveal attack on Guo´s scheme, respectively, Finally, this paper proposes some improving suggestions on corresponding weaknesses of these protocols.