Application of worst case analysis to failure analysis of hybrid IC

Tong Wang, Xu Wang, Meng Meng, Zhimin Ding, Ming He
2018 2018 19th International Conference on Electronic Packaging Technology (ICEPT)  
Fully homomorphic encryption (FHE) is a powerful cryptographic primitive that allows anyone to compute on encrypted data using only public information. So far, most FHE schemes are CPA secure. In PKC 2017, Canetti et al. extended the generic transformation of Boneh, Canetti, Halevi and Katz to turn any multi-key identity-based FHE scheme into a CCA1-secure FHE scheme. Their main construction of multi-key identity-based FHE is from probabilistic indistinguishability obfuscation (PIO) and
more » ... cal trapdoor encryption. We show that the above multi-key identity-based FHE is not secure by giving an attack. Then we give a solution to avoid the attack and redesign a more succinct and efficient multi-key identity-based FHE scheme. Compared with the scheme of Canetti et al., ours has smaller secret key of one identity and more efficient homomorphic operations. Thus we obtain a more efficient CCA1 secure FHE scheme.
doi:10.1109/icept.2018.8480779 fatcat:iwjxbs5ugbhxdddsw2cmgflyni