An Elliptic Curve Signcryption Scheme and Its Application

Table 1

Security comparison of three signcryption schemes.

	Confidentiality	Unforgeability	Integrity	Nonrepudiation	Availability	Forward secrecy	Internal security
Tsai’s scheme	Y	Y	Y	Y	Y	N	N
Zhou’s scheme	Y	Y	Y	Y	Y	N	N
Our scheme	Y	Y	Y	Y	Y	Y	Y

Note: “Y” means that the scheme has this property; “N” means that the scheme does not have this property.