\bib{1985/elgamal-sigs-draft} \yr 1985 \mr 87b:94037 \by Taher ElGamal \paper A public key cryptosystem and a signature scheme based on discrete logarithms \inbook \cite{1985/blakley} \pages 10--18 \seenewer \cite{1985/elgamal-sigs} \endref