基于二次剩余构造的盲签名方案

Construction of Blind Signature Scheme Based on Quadratic Residue

摘要: 盲签名是在1982年基于对保护信息的私密性而提出的签名方案，在密码学中占据着重要的地位。本文以二次剩余和整数分解的困难性为理论基础，提出了一种新的盲签名方案。通过利用Hash函数以及盲因子让待签名信息盲化，使签名者不知所签名的具体信息，从而保护了用户信息。同时，还证明了该签名的盲性以及不可伪造性。

Abstract: Blind signature was proposed based on the privacy of protected information in 1982. It plays an important role in cryptography. Based on the difficulty of quadratic residue and integer decompo-sition, a new blind signature scheme is proposed in this paper. By using Hash function and blind factor to blind signature information, it makes the content of the information has not been seen by the signer, thus protecting the user’s information. Meanwhile, it is proved that the signature is blind and cannot be forged.