Toktam Taghavi - Department of Computer Engineering, Ferdowsi university of Mashhad Mashhad, Iran
Abbas Ghasemi Bafghi - Department of Computer Engineering, Ferdowsi university of Mashhad Mashhad, Iran
Mohsen Kahani - Department of Computer Engineering, Ferdowsi university of Mashhad Mashhad, Iran

Many e-voting schemes have been proposed in the literature. However, none of them is both secure and practical. In this paper, a practical and secure electronic voting protocol for large-scale voting over the Internet is investigated. Blind signature is applied to a voter's ballot making it impossible for anyone to trace the ballot back to the voter. Unlike previous blind signature based schemes, in which the authority directly signs its blind signature on voters' ballots, the authority in the proposed scheme signs blind signature on the voter marks that are generated by voters from ballot serial numbers. Moreover, threshold cryptosystem has been used to guarantee the fairness of the voting process. Using blind signature, this scheme can support all types of election easily and flexibly. Since we haven’t use complex cryptographic techniques the proposed scheme is suitable for large scale elections.

Blind Signature, Threshold Cryptosystem, Internet, Voter mark, Digital Signature, Public key cryptosystem