We’re researchers in applied cryptography working on making secure crypto more usable and on eliminating bad crypto. This includes us sometimes breaking bad crypto but most of the time our work is constructive. We’re the core NaCl development team, along with Peter Schwabe.

We’ve designed several cryptosystems, including Salsa20, Poly1305, Curve25519, and Ed25519. These cryptosystems are designed for security, robustness, performance, and ease of implementation without data-dependent branches and without data-dependent array indices. We use these functions in NaCl to make our lives easier and the software better.

We’ve done some other things in crypto as well.