It sounds like you're looking for for a digital product (e.g., a mobile app, study platform, or e-reader tool) based on the well-known textbook “Cryptography and Network Security” by Bernard Menezes (often confused with the similarly titled book by Behrouz Forouzan, but Menezes co-authored the Handbook of Applied Cryptography — I assume you mean a study tool for a standard course on cryptography, network security, and cyber laws).