New Blind Digital Signature Based On Modified Elgamal Signature in Electronic Voting

The electronic election is an electoral system that allows voters to submit their vote with the highest safety and protection coefficient. Such electronic form of election can reduce holding costs and increase the public participation as well. The wide variety of Protocols in the fields of Electronic voting has been introduced, that each of these projects paid attention to how to have the safe and secure elections. Of course each of these projects had problems. With regard to the security and wide range of usage and high efficiency, the requirement for a blind digital signature mechanism seems to be necessary for the future information society. Then there should be embedded a way to eliminate the negative factors of progress. Chvam presented many projects in the field of blind signatures that each of them were provided in order to increase the security. Nowadays the use of the public key encryption systems is highly regarded. This paper presented a new generalized blind signature scheme based on modified Elgamal signature. The new design has an important property that ensures if a message is signed multiple times, the corresponding signatures are different (this property is one of the properties of Elgamal signature). This property in addition to the property of not to be identified of the blind signature is seen in our plan. In this new signature for reaching to our goal we used of number theory and Mathematical integrity techniques. With the blind signature scheme proposed in this paper, one with the use of quality of common Elgamal signature can produces the blind signature. New design in comparison with RSA blind signature scheme has less computational complexity and is faster as well. Our plan which is presented in comparing to the previous blind signatures which were based on the modified Elgamal signature has less computational complexity.

blind signature, Elgamal signature, Number theory, RSA blind signature