A Certificateless Ring Signature Scheme with High Efficiency in the Random Oracle Model

Table 3

Comparison of the security of several certificateless ring signature schemes.

Schemes	Hard problems	Models
Scheme [32]	-CAA problem and mICDH problem	Random oracle model (ROM)
Scheme [33]	DL problem and CDH problem	ROM
Scheme [31]	DL problem and CDH problem	ROM
Our scheme	CDH problem and co-CDH problem	ROM