对可非交互式打开的公钥加密的改进  

An improvement on identity based encryption for non-interactive opening

作　　者：范佳[1] 张李军[1] 

机构地区：[1]保密通信重点实验室,四川成都610041

出　　处：《中国科学技术大学学报》2013年第10期811-815,共5页JUSTC

基　　金：保密通信重点实验室基金(9140C110301110C1103)资助

摘　　要：可非交互式打开的公钥加密是一种特殊的公钥加密体制,该加密体制可以让接收方在不泄露私钥信息的情况下,通过发送证据向第三方展示其收到的秘密消息,并且接收方不需要与发送方或者第三方进行交互.针对该体制的现有安全性模型进行了分析并改进了其语法定义,改进后的模型消除了现有语法定义中第三方对证据的验证结果的不确定性.最后,进一步说明现有的两种可非交互式打开的公钥加密方案都可以通过语法改进而适用于新的安全性模型.The primitive of public key encryption with non-interactive opening is a specific kind of public key encryption. In such a system, a receiver provides a proof to a third party in a non-interactive way, which proves the relationship between a secret message and a ciphertext and does not expose the private key of the receiver. The existing security model of public key encryption with non-interactive opening was analyzed and the syntax was improved in order to clear the ambiguity in the verification result. Furthermore, it was pointed out that the two existing constructions of such primitive can both be made to fit to the new security model by improving the syntax.

关 键 词：非交互式打开 钥加密 全性模型 语法定义 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]