An Efficient Pairing-Free Certificateless Signature Scheme with KGC Trust Level 3 for Wireless Sensor Network

Table 4

A comparative summary: security.

Scheme	Security level 2	Security level 3
Jia et al. [14]	No [15]	No
Du et al. [15]	Yes	No
Thumbur et al. [16]	No [17]	No
Xu et al. [17]	Yes	No
Our scheme	Yes	Yes