A Pairing-Based Blind Signature E-Voting Scheme

Nowadays, electoral processes can be automated, using electronic devices and communication networks. The electronic voting systems allow easy voter casting and fast vote counting for electoral entities. In this paper, an electronic voting scheme is proposed, it performs the communication among voters and electoral entities with a minimal number of phases and cryptographic operations. The scheme uses a combination of the blind signature scheme proposed by Boldyreva in 2003 and the short signature proposed by Boneh-Lynn-Shacham in 2001. Both signatures use pairing-based cryptography and a special hash function known as map-to-point. The scheme generates small ballots which consist of just two messages, one blind signature and one short signature. We present experimental data showing that our pairing-based scheme is considerably more efficient than other blind signature e-voting schemes recently proposed whose security is based on the integer factorization problem or on the discrete logarithm problem over prime fields.