Cryptography and Network Security: Principles and Practice introduces students to the compelling and evolving field of cryptography and network security. In an age of viruses and hackers, electronic eavesdropping, and electronic fraud on a global scale, security is paramount. The purpose of this book is to provide a practical survey of both the principles and practice of cryptography and network security. The first part of the book explores the basic issues to be addressed by a network security capability and provides a tutorial and survey of cryptography and network security technology. The latter part of the book deals with the practice of network security, covering practical applications that have been implemented and are in use to provide network security.\nThe 8th Edition captures innovations and improvements in cryptography and network security, while maintaining broad and comprehensive coverage of the entire field. In many places, the narrative has been clarified and tightened, and illustrations have been improved based on extensive reviews by professors who teach the subject and by professionals working in the field.\nFeatures :\nNew section describing trust and trustworthiness–two key concepts in computer and network security.\nNew and Expanded - Coverage of Cloud security; IoT network security; and treatment of stream ciphers to keep pace with their growing importance.\nTwo new sections cover –\nRapidly emerging topic of lightweight cryptography in response to the Internet of Things and other small embedded systems that require new approaches to cryptography to accommodate the low power requirements, minimum memory, and limited processing power of IoT devices.\nPost-quantum cryptography in anticipation of the potential threat posed by quantum computers based on considerable research and development of cryptographic algorithms that are resistant to the threat.