Cryptography and Network SecurityAuthor(s): Marcelo Sampaio de Alencar\nFormat: Hardback\nPublisher: River Publishers, Denmark\nImprint: River Publishers\nISBN-13: 9788770224079, 978-8770224079\nSynopsis\nStarting with the historical facts behind the concept of information, which led to the creation of computer networks, Internet of things and cryptocurrencies, the book then arrives at the main definitions of cryptography and network security, the protocols that keep the systems running and the cybercrimes that could disrupt the systems. The basics of information theory, how to measure information, and the information associated with a source are discussed. Source codes are presented, along with the concepts of information transmission, joint information, conditional entropy, mutual information and channel capacity. Computer networks are discussed, including the main protocols and network architectures, and the important TCP/IP protocol. Network security, a topic intrinsically connec.