If you are referring to technical "Deep Features" in a modern security context (often discussed alongside Kahate’s foundational concepts in advanced courses), the term refers to: cryptography-network-security-atul-kahate.pdf - Naya Kuch
This paper is designed to serve as a textual companion to a PowerPoint (PPT) presentation. It covers the fundamental pillars of the textbook: Symmetric Encryption, Asymmetric Encryption, Message Integrity, and Network Security Protocols. cryptography and network security atul kahate ppt