Quantum Key Leasing for PKE and FHE with a Classical Lessor

Orestis Chardouvelis, Vipul Goyal, Aayush Jain +1

In this work, we consider the problem of secure key leasing, also known as revocable cryptography (Agarwal et. al. Eurocrypt' 23, Ananth et. al. TCC' 23), as a strengthened securit…