批量代理量子盲签名方案

Batch proxy quantum blind signature scheme

在经典密码学中的代理签名和盲签名基础之上,提出了批量代理量子盲签名方案.利用三进制两粒子量子纠缠系统的方法来进行密钥分配和文件量子态序列的编码.所有待签名的文件在通信过程中都被文件所有者的私钥加密.与经典盲签名方案不同之处在于,引入了试签名及对试签名的认证,以及双重身份(仲裁和代理)者的高效批量代理盲签名.安全性分析和效率讨论表明,通过仲裁者提供安全的批量代理盲签名的方法来完成对大量文件的高效盲签名是可行的.

Motivated by proxy signature and blind signature for the secure communications,the batch signature is proposed to create a novel quantum cryptosystem.It is based on three-dimensional two-particle-entangled quantum system which is used to distribute the quantum keys and create strings of quantum-trits（qutrits） for messages.All of the messages,which are expected to be signed,are encrypted by the private key of the message owner during communications.Different from the classical blind signature,an authenticity verification of signatures and an arbitrator’s effcient batch proxy signature are simultaneously applied in the present scheme.Analysis of security and effciency shows that it enables us to achieve a large number of quantum blind signatures for quantities of messages with a high effciency with the arbitrator’s secure batch proxy blind signature.