分野別セミナー

Recently, there have been many studies on constructing cryptographic primitives that are secure even if some secret information leaks. In this talk, we consider the problem of constructing leakage-resilient public-key encryption schemes. We review the definitions of leakage resilience to secret key information and randomness information. Then we show a generic construction of randomness-leakage resilient KEM/DEM schemefrom secret-key-leakage resilient KEM/DEM scheme. The construction can be applied to any secret-key-leakage resilient KEM/DEM scheme based on hash proof systems.