Hierarchical identity-based encryption resilient to private key leakage
YU Qi-hon · Jisuanji yingyong yanjiu · 2014
When the secret information leak,to design cryptographic systems with security has become an urgent problem needed to be solved for cryptographers.This paper presented a hierarchical identity-based encryption scheme which was resilient to the private key leakage.It used the dual system encryption method to prove the security of the presented system.It used the hash proof system method to prove that the scheme was resilient to the private key leakage.The performance of leakage-resilience is related to layers.When only one layer considered,the relative leakage rate could reach 1/3.