一种基于Schnorr体制的同时型多盲签名方案

本文提出了一种基于Schnorr体制的非平凡同时型多盲签名方案，可以同时完成盲签名和同时型多签名尺寸不会随签名人数增加而增加，并对该签名方案的正确性、盲性和不可伪造性作了证明，文章最后给出了一个基于该方案的具体应用。

A SIMULTANEOUS TYPE OF DIGITAL SIGNATURE SCHEME WITH BLIND AND MULTI- SIGNATURE FUNCTIONALITY BASED ON Schnorr SCHEME

In this paper, we present a simultaneous type of digital signature scheme which functions as both the blind signature and the multi -signature.It is based on the Schnorr scheme and has some features as follows: (1) As a blind- signature scheme,signatory can't obtain the original signature message. (2) Multi - users are allowed to put the blind signature simultaneously. (3) The size of the signature is changeless and will not be increased as the number of signatories increase. We also give proofs of the correctness, the blindability and the undeniability of this scheme and discuss the security in detail. In the end , we give an example to illustrate this scheme.