Cryptanalysis of anonymous channel protocol for large-scale area in wireless communications

摘要

The authentication and anonymous channel protocol for large-scale area in wireless communications proposed in [Proc. Sixth IEEE Symposium on Computers and Communications (ISCC'01), 3-5 (2001) 36] by Lin-Jan is analyzed, proving that it is not secure. More precisely, fake anonymous channel tickets can be easily generated allowing non-authorized users to be validated by the Visiting Network. Unlike it was claimed in [Proc. Sixth IEEE Symposium on Computers and Communications (ISCC'01), 3-5 (2001) 36], the security of this protocol does not rely on the difficulty of computing discrete logarithms over the finite field GF(p), p being a prime.