By resorting to basic features of topological knot theory we propose a (classical) cryptographic protocol based on the `difficulty' of decomposing complex knots generated as connected sums of prime knots and their mutants. The scheme combines an asymmetric public key protocol with symmetric private ones and is intrinsecally secure against quantum eavesdropper attacks.
@article{arxiv.1010.2055,
title = {Post Quantum Cryptography from Mutant Prime Knots},
author = {Annalisa Marzuoli and Giandomenico Palumbo},
journal= {arXiv preprint arXiv:1010.2055},
year = {2011}
}