Certificateless Key-Insulated Generalized Signcryption Scheme without Bilinear Pairings

Table 1

Comparison of computational costs.

Schemes	S-I-K	K-U-H	K-U-U	Sc	Un-Sc	Model	Technology
[33]	4	3	0			S	Identity-based
[34]	5	4	0			S	PKI-based
[35]			0			ROM	Identity-based
[38]	4	3	0			S	Identity-based
[43]	0	0	0			ROM	Attribute-based
Ours			0	7	8	ROM	Certificateless

Note.   represents the number of attributes.