ITBES:一种基于门限与身份的WSN加密签名方法

ITBES:One Threshold and Identity Based Encryption-signature Scheme for WSN

为了提高基于身份的加密签名(IBES)系统中密钥生成中心(PKG)的可信性,采用门限密码学中的(t,n)秘密共享方法,对Xavier IBES算法进行了改进,将主密钥s共享于n个对等的可信第三方PKG之间,并且将改进后的新的基于门限与身份的加密签名一体化方法(ITBES)应用于无线传感器网络,从方法的复杂性、存储需求、安全性方面进行了分析,结果表明我们的方法能够提高PKG可信性,加强无线传感器网络的安全。

In order to improve the confidentiality of the private key generator （PKG） in identity-based encryption-signature （IBES） scheme, we improve the Xavier IBES scheme, and use （t, n） secret sharing scheme of threshold cryptography to split the master secret s among n peer to peer third PKGs. We apply the new IBES scheme in wireless sensor network, and discuss its efficieney and security in terms of complexity, storage requirement and security. Analysis shows that our scheme can efficiently improve the confidentiality of the PKG and the security of wireless sensor network.