About the Book: Cryptography and Network Security is a comprehensive guide to cybersecurity, cryptographic algorithms, network security, and information protection, explaining the principles behind securing modern digital communications. Covering essential topics such as encryption, authentication, wireless security, IP security, system security, and email security, the book provides a strong foundation in safeguarding networks and data against cyber threats. Ideal for computer science students, cybersecurity professionals, IT practitioners, and networking enthusiasts, this resource offers practical insights into cryptography, secure communication protocols, and modern network defense techniques.