摘要
分析了一个基于属性签名方案的安全缺陷,并改进了Li等人的基于属性签名方案,从而减少了签名计算代价和签名长度。在随机预言机模型下,利用CDH问题的困难性,证明了改进方案满足在适应性选择消息和断言下的不可伪造性。改进方案还满足签名者属性隐私安全。仿真实验结果表明,改进方案可以较好地应用于移动对等网络数据分发,以实现消息认证。
Security flaw of an attribute-based signature was pointed out and analyzed firstly,and on the basis of Li＇s at- tribute-based signature （ABS）, a new efficient ABS was proposed, in which signing cost and signature size are de- creased. The proposed ABS is proved secure in the random oracle machine and satisfies existential unforgeability against adaptive chosen message and predicate attack based on the standard computational Diffie-Hellman assumption. Further- more, it provides attribute-signer privacy. Result of simulation shows that the proposed ABS can be well applied to data dissemination in mobile peer-to-peer network to achieve message authentication.
出处
《计算机科学》
CSCD
北大核心
2013年第7期93-97,共5页
Computer Science
基金
国家自然科学基金(61073042
61170241)
中央高校基本科研业务费专项资金(HEUCF100606)
2012年黑龙江省教育厅科学技术研究项目资金(12523049)
网络与数据安全四川省重点实验室开放课题资金(201107)资助
关键词
基于属性签名
动态门限
签名者属性隐私
随机预言机模型
Attributes-based signature, Dynamic threshold, Attribute signer-privacy, Random oracle model
