基于身份加密的主密钥弹性泄漏

Identity-based Encryption Resilient to Master Key Leakage

最近几年,各种各样的边信道攻击导致密码系统的秘密信息不同程度泄漏,为此密码学研究者掀起了抗泄漏的密码方案的研究热潮。构造出了一个可以抵抗主密钥泄漏的基于身份加密方案。给出了方案的正确性证明,基于DBDH假设证明了方案的安全性,用信息论熵的理论给出了抗泄漏的性能分析,主密钥的相对泄漏率几乎可以达到1。

In recent years, various side channel attacks have caused leakage of secret information of different cryptographic systems, so cryptography researchers have raised the research upsurge of leakage-resilient cryptographic schemes. An identity based encryption is presented which can resist the master secret key leakage. The correctness of the program is proved. The security of the scheme is obtained based on DBDH assumption. The performance of leakage-resilient is analyzed via the theory of entropy. The relative leakage rate of main secret key can almost reach 1.