Efficient chosen-ciphertext secure hybrid encryption scheme tolerating continuous leakage attacks
Yanwei Zhou, Bo Yang, Yong Hong Yu, Arshad Khan · Journal of the Chinese Institute of Engineers · 2019
For any PPT adversary, most traditional leakage-resilient cryptographic primitives cannot ensure that all elements in ciphertext are random. What’s worse, in a continuous leakage setting, there are few leakage-resilient cryptographic primitives available. Currently, not many researchers are studying leakage-resilient hybrid encryption (LR-HE) scheme. Thus, two continuous leakage-resilient hybrid encryption (CLR-HE) schemes are constructed in this paper, and the schemes’ security are proven based on the standard static assumption. Our constructions not only can maintain their claimed security in a continuous leakage setting, but also enjoy better performances. Because of these good performances, our constructions can provide continuous leakage-resilient security in the Internet of Things.