基于身份加密的非交互式密钥吊销

首先分析了基于证书的吊销技术，介绍了几个密钥进化方案，密钥进化技术可以直接用于基于身份的密钥更新。最后阐述了基于身份的密钥更新的研究现状，并讨论了一个目前较好的基于身份的非交互式密钥更新方案。

Research on non-interactive key revocation with identity-based encrption

Key revocation in identity-based encryption(IBE),in practice,is unavoidable and also a problem that cannot be bypassed.The non-interactive updating of private keys in IBE was discussed.First certificate-based revocation was introduced that might be useful in IBE.Then some schemes of key evolving were proposed that were the very desired technique in IBE.Finally,identity-based revocation was analyzed,and Hanaoka's solution was introduced that was the best solution,up to now,of non-interactive updating of private keys in IBE.