Undeniable billing in mobile communication
Jianying Zhou, Kwok-Yan Lam · 1998
In the current mobile communication networks, users have to trtistnetwork operators to make correct.charges over the cds they made.There islack of evidence to resolve possible disputti+ over thenurnberofcdls and the duration of each cd.Such a concern may grow when users roam among different network operators.This paper proposes an efficient solution to undeniable b]~ng when a mobile user roams into foreign networks.This is achieved by the combination of digitd signature and hash-chaining techniques.Mobile users need to submit a digitd signature when requesting a cd and release chained h~