Group Authentication with Multiple Trials and Multiple Authentications

Table 1

Summaries of performance of group authentication schemes.

	Ours	Harn’s GAS1	Harn’s GAS2
Securities under multiple trials for each secret	Allow multiple authentications with multiple trials	Attackers can disclose system’s secrets and users’ secret tokens	Attackers can disclose system’s secrets and users’ secret tokens
Each user’s computational cost for one group authentication (detailed)
Approximated complexities (based on the figures from [5])