This exciting resource introduces the core technologies that are used for Internet messaging. The book explains how Signal protocol, the cryptographic protocol that currently dominates the field of end to end encryption (E2EE) messaging, is implemented and addresses privacy issues related to E2EE messengers. The Signal protocol and its application in WhatsApp is explored in depth, as well as the different E2EE messengers that have been made available in the last decade are also presented, including SnapChat. It addresses the notion of self-destructing messages (as originally introduced by SnapChat) and the use of metadata to perform traffic analysis. A comprehensive treatment of the underpinnings of E2EE messengers, including Pretty Good Privacy (PGP) and OpenPGP as well as Secure/Multipurpose Internet Mail Extensions (S/MIME) is given to explain the roots and origins of secure messaging, as well as the evolutionary improvements to PGP/OpenPGP and S/MIME that have been proposed in the past. In addition to the conventional approaches to secure messaging, it explains the modern approaches messengers like Signal are based on. The book helps technical professionals to understand secure and E2EE messaging on the Internet, and to put the different approaches and solutions into perspective.

Professor Tikaya Komitopis isn't a great beauty, a fearless warrior, or even someone who can walk and chew chicle at the same time, but her cryptography skills earn her wartime notoriety. When enemy marines show up at her family's plantation, she expects the worst.But they're not there to kill her. They need her to decode mysterious runes, and they ask for help in the manner typical of a conquering empire: they kidnap her, threaten her family, and throw her in the brig of their fastest steamship.Her only ally is a fellow prisoner who charms her with a passion for academics as great as her own. Together, they must decipher mind-altering alchemical artifacts, deadly poison rockets, and malevolent technological constructs, all while dodging assassination attempts from a rival power determined the expedition should fail. As if the situation weren't treacherous enough, this new “ally” may turn out to be the last person Tikaya should trust. Those runes cloak more than mysteries, however, and he's the only one who can help her unravel them before their secrets destroy the world.

What happens when a seemingly rational state becomes paranoid and delusional? The Encrypted State engages in a close analysis of political disorder to shed new light on the concept of political stability. The book focuses on a crisis of rule in mid-20th-century Peru, a period when officials believed they had lost the ability to govern and communicated in secret code to protect themselves from imaginary subversives. The Encrypted State engages the notion of sacropolitics—the politics of mass group sacrifice—to make sense of state delusion. Nugent interrogates the forces that variously enable or disable organized political subjection, and the role of state structures in this process. Investigating the role of everyday cultural practices and how affect and imagination structure political affairs, Nugent provides a greater understanding of the conditions of state formation, and failure.

This book explores the latest developments in fully homomorphic encryption (FHE), an effective means of performing arbitrary operations on encrypted data before storing it in the ‘cloud’. The book begins by addressing perennial problems like sorting and searching through FHE data, followed by a detailed discussion of the basic components of any algorithm and adapting them to handle FHE data. In turn, the book focuses on algorithms in both non-recursive and recursive versions and discusses their realizations and challenges while operating in the FHE domain on existing unencrypted processors. It highlights potential complications and proposes solutions for encrypted database design with complex queries, including the basic design details of an encrypted processor architecture to support FHE operations in real-world applications.

This book offers insights on efficient utilization of homomorphic encryption (HE) for financial cryptography in confidentiality, phishing, anonymity, object and user identity protection. Homomorphic encryption has the potential to be a game-changer for the industry and cloud industry. HE method in cloud computing is presented in this book as a solution to increase the security of the data. Moreover, this book provides details about the set of fundamentals of cryptography, classical HE systems, properties of HE schemes, challenges and opportunities in HE methods, key infrastructure, problem of key management, key sharing, current algorithmic strategies and its limitation in implementation for solving complex problems in financial cryptography, application in blockchain, multivariate cryptosystems based on quadratic equations to avoid the explosion of the coefficients.

The Keys to Your Productivity Are Right There, Inside Windows Windows XP is packed with utilities and other features that can help you work smarter and faster. The trick is knowing what they are and how and when to use them. Microsoft Windows XP Power Productivity teaches you how to leverage these tools to automate, customize, and troubleshoot your system, and to harness its power most effectively. This is a must-read book for power users and system administrators; it also offers a path that ambitious beginners can follow to achieve expertise. Coverage includes: Performing network, automated, and unattended installations Controlling Windows XP startup and shutdown Managing printing Auditing the system Adding and removing OS components Understanding and managing the Registry Working with Device Manager Setting up and troubleshooting incoming and outgoing connections Hosting FTP sites Performing backups and recovering from disasters Managing users and groups Setting up, monitoring, and managing remote access Configuring and optimizing TCP/IP Managing certificates Configuring VPN connections Encrypting your files Is Your PC Holding You Back? Don't settle for making yourself more productive; do the same for your PC. Microsoft Windows XP Power Optimization, also from Sybex, shows you how to get more speed and power out of your current equipment, simply by tuning your Windows setup.

This book comprehensively reviews searchable encryption, which represents a series of research developments that directly enable search functionality over encrypted data. The book majorly covers: 1) the design and implementation of encrypted search algorithms, data structures, and systems that facilitate various forms of search over always-encrypted databases; 2) different threat models, assumptions, and the related security guarantees, when using searchable encryption in the real-world settings; and 3) latest efforts in building full-fledged encrypted database systems that draw insights from searchable encryption constructions. The book fits in the timely context, where the necessity of safeguarding important and sensitive data has been globally recognized. Traditional security measures, such as storing data behind network firewalls and layers of access control mechanisms to keep attackers out, are no longer sufficient to cope with the expanding landscape of surging cyber threats. There is an urgent call to keep sensitive data always encrypted to protect the data at rest, in transit, and in use. Doing so guarantees data confidentiality for owners, even if the data is out of their hands, e.g., hosted at in-the-cloud databases. The daunting challenge is how to perform computation over encrypted data. As we unfold in this book, searchable encryption, as a specific line of research in this broadly defined area, has received tremendous advancements over the past decades. This book is majorly oriented toward senior undergraduates, graduate students, and researchers, who want to work in the field and need extensive coverage of encrypted database research. It also targets security practitioners who want to make well-informed deployment choices of the latest advancements in searchable encryption for their targeted applications. Hopefully, this book will be beneficial in both regards.