T. Elgamal

A public key cryptosystem and a signature scheme based on discrete logarithms

T. Elgamal, 1984, CRYPTO 1984.

A subexponential-time algorithm for computing discrete logarithms over GF(p^2)

T. Elgamal, 1985 .

A public key cyryptosystem and signature scheme based on discrete logarithms

Taher ElGamal, T. Elgamal, 1985 .