CRYPTOGRAPHY PROBLEMS AND SOLUTIONS (A Cryptography Textbook)

Dharminder Chaudhary · Pratik Gupta

JEC PUBLICATION

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In an age where digital information is ubiquitous and the need for secure communication and data protection is paramount, understanding cryptography has become essential for individuals and organizations alike. This book aims to serve as a comprehensive guide to the principles, techniques, and applications of cryptography, catering to both beginners and experienced practitioners in the field. Cryptography, the art and science of securing communication and data through mathematical algorithms and protocols, has a rich history dating back centuries. From ancient techniques of secret writing to modern cryptographic algorithms and protocols used in digital communication networks, cryptography has evolved significantly to meet the challenges of an increasingly interconnected and digitized world. This book is structured to provide a systematic and accessible introduction to cryptography, covering fundamental concepts such as encryption, decryption, digital sig- natures, key management, and cryptographic protocols. Through clear explanations, practical examples, and hands-on exercises, readers will gain a deep understanding of cryptographic principles and techniques, enabling them to apply cryptography effectively in real-world scenarios. Key Features of This Book: Comprehensive coverage of cryptographic principles, algorithms, and protocols. Practical examples and code snippets to illustrate cryptographic concepts. Discussions on modern cryptographic techniques such as homomorphic encryption, post-quantum cryptography, and blockchain cryptography. Insights into cryptographic applications in secure communication, digital signatures, authentication, and data protection. Considerations on cryptographic key management, security best practices, and emerging trends in cryptography. Whether you are a student learning about cryptography for the first time, a cyber- security professional seeking to enhance your skills, or an enthusiast curious about the inner workings of cryptographic algorithms, this book is designed to be your trusted companion on your journey through the fascinating realm of cryptography. We hope this book inspires curiosity, sparks intellectual exploration, and equips readers with the knowledge and tools needed to navigate the complex and ever-evolving landscape of cryptography.

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Dr. Dharminder Chaudhary received his M. Sc. in mathematics, and M. Tech. in computer science and data processing from IIT Kharagpur, India. Currently, he is working as Assistant Professor at Amrita Vishwa Vidyapeetham, Chennai, India. His research interests are Number theory, cryptography, post quantum cryptography. 

Dr. Pratik Gupta is an Assistant Professor in the Department of Mathematics at D. A. V. Degree College, Lucknow, India- 226004. He is having more than 10 research papers and 03 years of Academic Teaching Experience. Areas of interest are Elliptic Curve Cryptography. Applications of singncryption schemes. Application on Elliptic Curve.