PCQ is (No) Picnic

And then there were three: CRYSTALS Dilithium, Falcon and Rainbow. These are the finalists for the NIST standard for Post Quantum Cryptography (PQC) of digital signatures. Basically, they will replace RSA and ECC in an era of quantum computers, and provide the core of trust on the Internet. Dilithium and Falcon are lattice methods, and Rainbow uses multivariate quadratic polynomials. So while lattice looks like a winner because of its speed of computation…