An Efficient and Secure Certificateless Authentication Protocol for Healthcare System on Wireless Medical Sensor Networks

Table 3

Efficiency comparisons.

Scheme	Authen	Bandwidth	Time
[7]	4E	48 bytes	15 ms
[12]	6P + 6E + 21S	96 bytes	58.2 ms
[13]	2P + 10S	72 bytes	14.72 ms
Ours	8S	28 bytes	7.52 ms