具有完全保密性的高效可净化数字签名方案  

Efficient sanitizable signature schemes with full privacy

作　　者：巩俊卿[1] 钱海峰[1] 

机构地区：[1]华东师范大学计算机科学技术系,上海200241

出　　处：《计算机应用研究》2011年第1期312-317,共6页Application Research of Computers

基　　金：国家自然科学基金资助项目(60703004;60873217);国家教育部博士点基金资助项目(20070269005)

摘　　要：现有的基于变色龙散列函数的方案均未达到完全保密性,而基于群签名的可净化数字签名方案满足完全保密性,但因效率较低而不够实用。为此,提出一个新的可净化数字签名方案,它基于传统数字签名方案、BLS签名方案和公钥加密方案构造,且满足可净化数字签名的所有基本安全性需求,即不可伪造性、不可变性、透明性、完全保密性及可审计性,同时具有比基于群签名方案更高的运算效率,继而具有更高的实用性。The existing chameleon hash-based constructions do not achieve full privacy, while the group signature-based con- struction that achieves full privacy was not efficient enough and thus not practical. In order to solve this problem, this paper proposed a new sanitizable signature scheme. The construction was based on conventional digital signature scheme, the BES signature scheme and public key encryption scheme, and meet all the fundamental security requirements of sanitizable signa- tures, i. e. , unforgeability, immutability, transparency, full privacy and accountability, and reached higher computational ef- ficiency than group signature-based construction and thus higher practicality.

关 键 词：可净化数字签名 完全保密性 数字签名 BLS签名 公钥加密 

分 类 号：TN918.1[电子电信—通信与信息系统] TP309[电子电信—信息与通信工程]