【摘要】 针对组密钥交换协议存在的安全性及执行效率问题,提出了基于双线性配对的密钥树口令认证组密钥交换协议nPAKE’。协议中使用双线性配对取代了一般组密钥交换协议中的幂指数运算,并为协议的参与方建立了二叉密钥树结构。对协议的安全性及效率进行的分析表明协议中所采用的双线性配对技术能够满足对组密钥交换协议的安全性要求,并且协议在执行效率上相对于其他组密钥交换协议有很大的提高。更多还原

【Abstract】 To improve the security and implementation efficiency in group password-authentication key exchange protocols,a hierarchical group password-authentication key exchange protocol was proposed and named nPAKE’,in which it used bilinear pairing to replace exponential operation and establishes the binary key tree structure for the protocol participants.The security and efficiency analysis of the protocol reveals that it can meet the group PAKE security requirements,while the implementation of efficiency relative to other group key exchange protocol has greatly improved.更多还原