Secure Messaging on the Internet by Ph.D. Oppliger, Rolf: Used

Contemporary Cryptography (Artech House Information Security and Privacy), Oppli

Network Security and Cryptography By Musa, Sarhan M. Sarhan M. M

Contemporary Cryptography (Artech House Computer Security Library) by Oppliger P

Internet and Intranet Security (Computing Library S.), Oppliger, Rolf, Used; Goo

Handbook of Applied Cryptography by Alfred J Menezes: Used

Cryptography and Network Security by PH.D. Stallings, William: Used

Secure Messaging on the Internet Hardcover Rolf Oppliger