Paper 2018/1203

DAGS: Reloaded Revisiting Dyadic Key Encapsulation

Gustavo Banegas and Paulo S. L. M. Barreto and Brice Odilon Boidje and Pierre-Louis Cayrel and Gilbert Ndollane Dione and Kris Gaj and Cheikh Thiecoumba Gueye and Richard Haeussler and Jean Belo Klamti and Ousmane N'diaye and Duc Tri Nguyen and Edoardo Persichetti and Jefferson E. Ricardini

Abstract

In this paper we revisit some of the main aspects of the DAGS Key Encapsulation Mechanism, one of the code-based candidates to NIST's standardization call for the key exchange/encryption functionalities. In particular, we modify the algorithms for key generation, encapsulation and decapsulation to fit an alternative KEM framework, and we present a new set of parameters that use binary codes. We discuss advantages and disadvantages for each of the variants proposed.