The security flaws of an identity-based authentication model were analyzed.The scheme failed to achieve entity authentication due to identity impersonation attack.Then,an improved authentication Western Show Pads scheme was proposed to realize anonymous roaming in heterogeneous wireless networks.The authentication scheme improves the original one in two aspects.
Firstly,the scheme remedies the security flaws and Heart Rate Power Wire is provably secure in the CK model.Secondly,the scheme simplifies the protocol interaction and it is more efficient.