Quantum Resilient Public Key Cryptography in Internet of Things

With Internet of Things (IoT) becoming increasingly popular and widespread, the somewhat secure devices could potentially become completely insecure with the emergence of quantum computers. The problem is that a lot of IoT devices in crucial places are not secured and use unencrypted communication or use the current recommended encryption algorithms. This paper explores public key encryption (PKE) with post quantum cryptography (PQC) algorithm Kyber, despite it being usually used as key-encapsulation mechanism (KEM). The proposed approach has been evaluated experimentally. The conducted experiment encrypts the data on one scenario on the IoT device itself and in the other scenario the data is encrypted on a fog node. Obtained results are promising and suggest that quantum resilient public key cryptography is applicable in internet of things.