Hill cipher modification based on eigenvalues HCM-EE. - Ahmed Y. Mahmoud; Alexander G. Chefranov (SIN, 2009)

Elgamal public key cryptosystem and signature scheme in GU(m, p, n). - Alexander G. Chefranov; Ahmed Y. Mahmoud (SIN, 2010)

Commutative Matrix-based Diffie-Hellman-Like Key-Exchange Protocol. - Alexander G. Chefranov; Ahmed Y. Mahmoud (ISCIS, 2013)