An Efficient Anonymous Authentication Scheme for Mobile Pay-TV Systems

Table 4

Comparison of operation numbers in each scheme.

Schemes	A	B	C	D	E	F	G	H
The scheme in [32]	6	0.78	7	0.91	7	0.91	4	5
The scheme in [33]	7	0.91	20	1.3	7	0.91	4	5
The scheme in [15]	3	0.39	6	0.78	4	0.52	3	4
Our scheme	3	0.39	6	0.78	4	0.52	3	3

Note: : the number of hash operations in the initialization phase. : the execution time of the initialization phase (s). : the number of hash operations by user side in the issue phase. : the execution time by user side of the issue phase (s). : the number of hash operations by server side in the issue phase. : the execution time by server side of the issue phase (s). : the number of parameters in the stored set. : the number of parameters transmitted on public channel.