This expanded textbook, now in its second edition, is a practical yet in depth guide to cryptography and its principles and practices. Now featuring a new section on quantum resistant cryptography in addition to expanded and revised content throughout, the book continues to place cryptography in real-world security situations using the hands-on information contained throughout the chapters. Prolific author Dr. Chuck Easttom lays out essential math skills and fully explains how to implement cryptographic algorithms in today's data protection landscape. Readers learn and test out how to use ciphers and hashes, generate random keys, handle VPN and Wi-Fi security, and encrypt VoIP, Email, and Web communications. The book also covers cryptanalysis, steganography, and cryptographic backdoors and includes a description of quantum computing and its impact on cryptography. This book is meant for those without a strong mathematics background with only just enough math to understand the algorithms given. The book contains a slide presentation, questions and answers, and exercises throughout.

• Presents new and updated coverage of cryptography including new content on quantum resistant cryptography;
  
• Covers the basic math needed for cryptography - number theory, discrete math, and algebra (abstract and linear);
  
• Includes a full suite of classroom materials including exercises, Q&A, and examples. 
  

Dr. Chuck Easttom is the author of 30 books, including several on computer security, forensics, and cryptography.  He has also authored scientific papers on many topics including cryptography topics such as s-box design, lattice-based cryptography, and cryptographic backdoors. He is an inventor with 22 computer science patents, several related to steganography.  He holds a Doctor of Science in cyber security (Dissertation topic was “A Comparative Study of Lattice Based Algorithms for Post Quantum Computing”), a Ph.D. in Nanotechnology (Dissertation topic was “The Effects of Complexity on Carbon Nanotube Failures”),  and three master’s degrees (one in applied computer science, one in education,  and one in systems engineering). He is a senior member of both the IEEE and the ACM. He is also a Distinguished Speaker of the ACM and a Distinguished Visitor of the IEEE. He is an adjunct lecturer at Georgetown university teaching several graduate courses including cryptography and cybersecurity.