《计算机应用研究》|Application Research of Computers

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

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作者 巩俊卿,钱海峰
机构 华东师范大学 计算机科学技术系,上海 200241
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文章编号 1001-3695(2011)01-0312-06
DOI 10.3969/j.issn.1001-3695.2011.01.088
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。
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
基金项目 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)
本文URL http://www.arocmag.com/article/1001-3695(2011)01-0312-06.html
英文标题 Efficient sanitizable signature schemes with full privacy
作者英文名 GONG Jun-qing, QIAN Hai-feng
机构英文名 Dept. of Computer Science & Technology, East China Normal University, Shanghai 200241, China
英文摘要 The existing chameleon hash-based constructions do not achieve full privacy, while the group signature-based construction 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 BLS signature scheme and public key encryption scheme, and meet all the fundamental security requirements of sanitizable signatures, i.e., unforgeability, immutability, transparency, full privacy and accountability, and reached higher computational efficiency than group signature-based construction and thus higher practicality.
英文关键词 sanitizable signature; full privacy; digital signature; BLS signature; public key encryption
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