An Improved and Privacy-Preserving Mutual Authentication Scheme with Forward Secrecy in VANETs

Table 6

The comparison of communication cost.

Schemes	Broadcasting single signature (bytes)	Broadcasting n signatures (bytes)
Ali and Li [38]	408	408n
Zhong et al. [37]	644	644n
Cui et al. [6]	100	100n
Our scheme	168	168n