A Secure and Fair Joint E-Lottery Protocol

Table 3

Comparisons with the existing e-lottery websites.

	E-Lottery Syndicates [8]	Myleto [9]	Ours
Support joint and individual e-lottery service	Support individual only	Support joint only	Support joint and individual
Player should register with the TP	Yes	Yes	No
Allows players to verify legality of lottery agent	Absence of verification mechanisms	Absence of verification mechanisms	Adopts ID-based multi-signature
Allows players and lottery agent to verify the legality of other players	Absence of verification mechanisms	Absence of verification mechanisms	Adopts ID-based signature
The lottery agent refuses to give out the prize	No remedial measures	No remedial measures	Players hold the TP’s signature to arbitral request
If a malicious player forges a picture to claim prize	Not easy to identify the legal lottery	Not easy to identify the legal lottery	Prompt identification by digital signature
Non-repudiation evidence	Depend on the scanned copy of the lottery shown on the screen	Depend on the scanned copy of the lottery shown on the screen	PKI digital signature