Contemporary Cryptography by Ph.D. Oppliger, Rolf: Used

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

Handbook of Applied Cryptography by Alfred J Menezes: (Discrete Mathematics...)

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

Internet & Intranet Security by Ph.D. Oppliger, Rolf: Used

Introduction to Cryptography with Coding Theory by Wade Trappe: Used

Internet and Intranet Security - Oppliger Artech House - Used Good

Introduction to Cryptography - Hardcover, by Trappe Wade; Washington - Very Good