
Kit Battarbee

Research Associate
Research Interests:
Hybrid security;
Provable security;
Post-quantum cryptography;
Quantum cryptanalysis
My current main interest is the hybridisation of quantum cryptography with post-quantum cryptography, for scalable, quantum-safe communication with an enhanced security profile compared to the plain deployment of plain post-quantum cryptography. In particular I'm trying to do this in a provable security environment, reconciling the way quantum information scientists prove security of quantum cryptography protocols with the more bottom-up authenticated key exchange frameworks of classical cryptography. I am also interested in the surprisingly under-studied area of quantum cryptanalysis of post-quantum cryptography, which was primarily the content of my PhD. In terms of the work analysing the security of NIST post-quantum schemes, the study of quantum algorithms for these problems has been notably absent, which is something of a blind spot given their claim of resistance to quantum attack
Featured Publications: On the Semidirect Discrete Logarithm Problem in Finite Groups. [Link] Quantum-Safe Hybrid Key Exchanges with KEM-Based Authentication [arxiv link]