EdDSA for more curves
Proceedings article published in 2015 by
Dj Daniel Bernstein,
S. Josefsson,
T. Tanja Lange,
P. Peter Schwabe,
By Yang
Abstract
The original specification of EdDSA was suitable only for finite fields Fq with q mod 4 = 1. The main purpose of this document is to extend EdDSA to allow finite fields Fq with any odd q. This document also extends EdDSA to support prehashing, i.e., signing the hash of a message. Keywords: Signatures, elliptic curves, Edwards curves, Ed25519, Curve41417, Ed448-Goldilocks, Ed521