Takahiro Matsuda

Efficient key encapsulation mechanisms with tight security reductions to standard assumptions in the two security models

2016 · Security and Communication Networks

Abstract In this paper, we propose two new practical constructions of chosen ciphertext attack secure (CCA secure) key encapsulation mechanisms (KEM, which is the main building block for public key encryption in hybrid encryption), with …

A New Combiner for Key Encapsulation Mechanisms

2019 · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences

Key encapsulation mechanism (KEM) combiners, recently formalized by Giacon, Heuer, and Poettering (PKC'18), enable hedging against insecure KEMs or weak parameter choices by combining ingredient KEMs into a single KEM that remains secure assuming just …