Chosen-Ciphertext Secure Identity-Based KEM
Huiyan Chen, Dongmei Chen · International Conference on Multimedia Information Networking and Security · 2013
In this paper, by means of correlated products, we present a lattice-based identity-based key encapsulation mechanism (IB-KEM) that is secure against an adaptive chosen-identity and chosen-cipher text attack (IND-ID-CCA) in the standard model and that is not explicitly derived from hierarchical identity-based techniques. We give a rigorous, games-based proof of our result.