Revocable Cryptography from Learning with Errors

ePrint Report: Revocable Cryptography from Learning with Errors

Prabhanjan Ananth, Alexander Poremba, Vinod Vaikuntanathan

Quantum cryptography leverages many unique features of quantum information in order to construct cryptographic primitives that are oftentimes impossible classically. In this work, we build on the no-cloning principle of quantum mechanics and design cryptographic schemes with key-revocation capabilities. We consider schemes where secret keys are represented as quantum states with the guarantee that, once the secret key is successfully revoked from a user, they no …

build capabilities cryptography design eprint report errors features guarantee information key keys order quantum quantum cryptography quantum mechanics report secret secret key secret keys states work