دانلود کتاب امنیت لایه فیزیکی، توزیع کلید کوانتومی و رمزنگاری پساکوانتومی، 2e

The growth of the Internet and data traffic does not appear to level off any time soon, and it is projected to continue to grow exponentially in years to come. It is, however, necessary to make a dramatic improvement in optical signal transmission rates to cope with the incoming bandwidth crunch. Although there are many proposals on how to improve spectral efficiency, the security of optical networks appears to lag far behind. By taping into the portion of dense wavelength-division multiplexing (DWDM) signal, a huge amount of data can be compromised. Therefore, the security of both optical networks and wireless networks is becoming one of the major issues to be addressed sooner rather than later. Public key cryptography has several serious drawbacks it is difficult to implement it in devices with low memory and low process constraints; Internet and wireless technologies are becoming increasingly mobile; security schemes are based on unproven assumptions of intractability of certain functions, the assumption of limiting computing resources of Eve is very often incorrect; to mention a few. To solve all these problems in a simultaneous manner, new security concepts must be introduced, such as those described in this book. The purpose of this book is to introduce the reader to the most advanced topics of physical-layer security (PLS), cryptography, covert/stealth communications, quantum key distribution (QKD), also known as quantum cryptography, and postquantum cryptography (PQC). So far, these topics have been considered as separate disciplines, even though they are targeting the same security problems we are facing today.