I'm particularly interested in Derek Atkins' talk on low-power crypto algorithms. He claims to have developed a DSA algorithm and a key exchange protocol that are both quantum-resistant and operate on very small numbers. Unfortunately, I couldn't find any published work on these algorithms outside of marketing material from his company's website (SecureRF).

I was however able to find some slides on Walnut DSA[1], but I haven't worked through the math yet as I'm lacking some required background.

[1]: https://www.nist.gov/sites/default/files/documents/2016/10/1...