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- Physical communication channels in wireless technology are inherently insecure. As a wire only has two ends, the wired communication technology has a means of supporting integrity of communication, whereas in wireless communication dedicated technology is needed—even to control a basic point-to-point connection. This technology of communication integrity, which forms an essential part of any modern wireless communications system, is called security technology. This book is a description of the security solutions specified for the Universal Mobile Telecommunication System (UMTS). It gives a comprehensive presentation of UMTS security specifications and explains the role of the security functionality in UMTS. In the first place, this book is aimed at presenting the UMTS security system in its totality to planners, builders and implementers of UMTS networks. It also gives a unified treatment of the security services provided by UMTS that we expect will be invaluable to developers and analysts of application-oriented security services that make use of UMTS communication networks. This book could also serve as a textbook for an advanced university course in modern communication security technology. To achieve global relevance a communication system requires standardization. Standardization guarantees that entities in the system are able to communicate with each other even when they are controlled by different mobile network operators or are manufactured by different vendors. However, it is important to have a nonstandardized area that allows differentiation between operators and manufacturers. For instance, the internal structure of network entities belongs to the nonstandardized area. Security is visible in both the standard and the non-standard specifications of UMTS. As an example, communication between the mobile phone and the radio network is protected by encrypting the messages. It is important that strict standardization applies to both how encryption is carried out and which encryption keys are used, otherwise the receiving end could not reverse the operation and recover the original content of the message. On the other hand, both communicating parties have to store the encryption keys in such a way that no outsider can get access to them. It is important that this is done, but we do not have to standardize how it is done. The emphasis of our book is on the standardized features of UMTS security but not at the expense of other aspects. The book is split into two parts. The first describes the security architecture and security functionality of UMTS, while the specification and analysis of cryptographic algorithms is presented in the second part. By breaking the book down in this way we hope to offer a specialized treatment of the two different areas and methodologies that comprise the UMTS security system. While the parts can be read independently, we feel by including them in one book that the reader has the chance to become familiar with the delicate interplay between security and cryptography. This book presents the results of the extensive, demanding and strenuous work of security expert teams and individuals who together created the specifications of UMTS security. It draws largely on collaboration and discussions with the world’s foremost specialists all of whom participated in this work. In particular, we want to express our thanks to the members of 3GPP SA3, ETSI SAGE and the 3GPP algorithms task forces and, of course, our colleagues at NOKIA.1 Finally we would like to thank the publisher of the book and the editing team whose splendid work transformed our typescript into a coherent book.5 139浏览会员免费
- Pro TypeScript. Application-Scale JavaScript Development Steve Fenton page 300 TypeScript is a language created and maintained by Microsoft, and released under an open-source Apache 2.0 License (2004). The language is focused on making the development of JavaScript programs scale to many thousands of lines of code. In fact, Microsoft has written both the Azure Management Portal (1.2 million lines of code) and the Visual Studio Code editor (300,000 lines of code) in TypeScript. The language attacks the large-scale JavaScript programming problem by offering better design-time tooling, compiletime checking, and dynamic module loading at runtime. As you might expect from a language created by Microsoft, there is excellent support for TypeScript within Visual Studio, but plenty of other development tools have also added support for the language, including VS Code, WebStorm, Eclipse, Sublime Text, Vi, Atom, IntelliJ, and Emacs among others. The widespread support from these tools as well as the permissive open-source license makes TypeScript a viable option outside of the traditional Microsoft ecosystem. The TypeScript language is a typed superset of JavaScript, which is compiled to plain JavaScript in the flavor of your choosing. This makes programs written in TypeScript highly portable as they can run on almost any machine — in web browsers, on web servers, and even in native applications on operating systems that expose a JavaScript API, such as WinJS. The language features found in TypeScript can be divided into three categories based on their relationship to JavaScript (see Figure 1). The first two sets are related to versions of the ECMA-262 ECMAScript Language Specification, which is the official specification for JavaScript. The ECMAScript 5 specification forms the basis of TypeScript and supplies the largest number of features in the language. Subsequent versions of the ECMAScript specification are rolled into TypeScript releases, often as early previews that feature down-level compilation to older versions of the specication. The third and final set of language features includes items that are not planned to become part of the ECMAScript standard, such as generics and type annotations. All the additional features of TypeScript can be output to a number of widely supported versions of JavaScript. TypeScript has several native frameworks, including Angular, Ionic, RxJs 5, and Dojo 2. Additionally, because TypeScript is such a close relative of JavaScript, you can consume the myriad of existing libraries and frameworks written in JavaScript; Aurelia, Backbone, Bootstrap, Durandal, jQuery, Knockout, Modernizr, PhoneGap, Prototype, Raphael, React, Underscore, Vue, and many more are all usable in TypeScript programs. Correspondingly, once your TypeScript program has been compiled it can be consumed from any JavaScript program too. TypeScript's similarity to JavaScript is beneficial if you already have experience with JavaScript or other C-like languages. The similarity also aids the debugging process as the generated JavaScript correlates closely to the original TypeScript code. Source maps can also be generated to aid debugging, with browser developer tools displaying your TypeScript code during in-browser debugging.0 333浏览会员免费
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- The book is for web developers who want to go beyond front-end web development and enter the world of full-stack web development by learning about modern web technologies and how they come together. A good understanding of JavaScript programming is required before getting started with this web development book.0 32浏览会员免费
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