基于身份的密码系统及其实现

Implementation of Identity-based Cryptosystem

基于身份的认证体制是一种以用户的身份信息作为公钥的认证体制,首先介绍了IBE技术的基础知识,并就IBE中所存在的公开问题作了较详细的分析,提出了一种基于中间公钥、门限和密钥隔离的IBE认证体制方案,解决了PKG密钥安全、私钥的安全传输、密钥托管、公钥撤销等问题,提高了IBE认证体制的安全性和实用性,还给出了系统的具体实现,并就其安全性作了具体分析。

Authentication technology based on identity is a authentication system with the user’s identity information as the public key.This article proposes the IBE concept and an authentication scheme based on middle public key,threshold and key insulation,thus to solve the security of PKG private key,the secure transfer of private key,key escrow,key revoke,and improve the security of the IBE.