无证书线性同态聚合签名方案研究  

Research on the Certificateless Linear Homomorphic Aggregate Signature Scheme

作　　者：茅磊 MAO Lei(School of Information and Telecommunications Engineering,Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221116,China)

机构地区：[1]江苏建筑职业技术学院信电工程学院,江苏徐州221116

出　　处：《软件导刊》2022年第2期159-164,共6页Software Guide

基　　金：江苏省高等学校大学生创新创业训练计划项目(202010849026Y);江苏建筑职业技术学院青年专项(JYQZ20-02)。

摘　　要：在云计算和大数据时代,密码学中的数字签名技术发挥着不可替代的作用。数字签名不仅可以保障数据的真实性和不可否认性,而且可用于实现云存储中各种外包数据完整性的公开审计。从云存储实际需求出发,设计一种适用于云存储中多用户数据公开批验证的无证书线性同态聚合签名方案。在安全性上,该签名方案可抵抗来自聚合签名者内部的"合谋攻击";在效率上,其可对不同用户各种数据产生的签名进行压缩和聚合。在JPBC库下进行仿真实验,结果显示该方案的验证速度比普通无证书数字签名提高近10倍。此外,该方案只需存储所有数据同态聚合后的一个数字签名,相较于传统的"一块数据,一个签名"的存储方式,从根本上节约了用户在云上的存储空间。In the era of cloud computing and big data,digital signature technology plays an irreplaceable role in cryptography. Digital signatures can not only guarantee the authenticity and non-repudiation of data,but are now more used to implement public audits of the integrity of various outsourced data in cloud storage. Starting from the actual needs of cloud storage,this article designs a certificateless linear homomorphic aggregation signature scheme suitable for public batch verification of multi-user data in cloud storage. The security of the signature scheme can resist internal signatories from the aggregation. Collusion attack";in terms of efficiency,this scheme can compress and aggregate the signatures generated by various data of different users. Through simulation experiments under the JPBC library,it shows that this scheme improves the verification speed nearly 10 times compared with ordinary certificateless digital signatures. Besides,in terms of storage cost,the scheme only needs to store a digital signature after homomorphic aggregation of all data.Compared with the traditional "one piece of data,one signature" storage method,it fundamentally saves users′ storage space on the cloud.

关 键 词：信息安全 密码学 线性同态签名 聚合签名 无证书密码体制 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]