中文摘要：

近期,由于冷启动和边信道等多种新型密码攻击破坏了原有方案的安全性,设计出抗泄漏的密码学方案就成了一个迫切需要解决的问题.设计了一个抗泄漏的基于身份的加密方案,在平方判定性双线性Diffie-Hellman困难问题假设的基础上证明了方案的安全性,并且可以获得较短的公钥长度.另外通过具体抗泄漏性能分析可以得到系统能容忍的密钥泄漏量可以接近密钥长度的一半,即相对泄漏率接近于1/2.

英文摘要：

Recently, in the community of leakage-resilient cryptography research, leakage-resilient identity- based encryption causes a great deal of concern. A leakage-resilient identity-based encryption scheme is presented. On the judgment of square bilinear Diffie-Hellman problem（Square-DBDH） , the proof of the security of the scheme is given in a tight reduction way. The proposed scheme has shorter public key parameters. The specific analysis shows that our scheme can almost tolerate half leakage of the secret key, i.e. the relative rate is close to 1/2.