For the symbolic execution, dynamic taint analysis and theorem proving are widely used in software reverse engineering in recent years, the traditional code obfuscation can't make the javascript free of the revers...
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ISBN:
(纸本)9781467393720
For the symbolic execution, dynamic taint analysis and theorem proving are widely used in software reverse engineering in recent years, the traditional code obfuscation can't make the javascript free of the reverse engineering, although the code may read hardly. Based on that, this paper proposes a code obfuscation technique to against the symbolic execution. This technique is based on the unsolved conjecture which named Collatz conjecture. During the obfuscation, the function is stable as well as the control flow is changed. The experiment shows the method this paper used can implement the code protection to javascript. And the experiment prove that because of the unsolved problems, the symbolic execution is lack of necessary technical to do the reverse engineering.
Web sites and web browsers have recently evolved into platforms on top of which entire applications are delivered dynamically, mostly as javascript source code. This delivery format has sparked extremely enthusiastic ...
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ISBN:
(纸本)9781450302036
Web sites and web browsers have recently evolved into platforms on top of which entire applications are delivered dynamically, mostly as javascript source code. This delivery format has sparked extremely enthusiastic efforts to customize both individual web sites and entire browsers in ways the original authors never expected or accommodated. Such customizations take the form of yet more script dynamically injected into the application, and the current idioms to do so exploit arcane javascript features and are extremely brittle. In this work, we accept the popularity of extensions and seek better linguistic mechanisms to support them. We suggest adding to javascript aspect-oriented features that allow straightforward and declarative ways for customization code to modify the targeted application. Compared to most prior aspect-related research, our work has a different motivation and a different target programming environment, both of which lead to novel design and implementation techniques. Our aspect weaving is entirely integrated into a new dynamic JIT compiler, which lets us properly handle advice to first-class functions in the presence of arbitrary aliasing, without resorting to whole-program code transformations. Our prototype demonstrates that an aspect-oriented approach to web-application customization is often more efficient than current idioms while simplifying the entire process.
javascript is arguably today’s most popular programming language, and it is ubiquitous as the “language of the web”. It is dynamically typed, meaning that programmers do not write type annotations, and beyond this ...
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javascript is arguably today’s most popular programming language, and it is ubiquitous as the “language of the web”. It is dynamically typed, meaning that programmers do not write type annotations, and beyond this it also has a nonrestrictive dynamic semantics. This makes it easy for programmers to write code that runs, though determining if the code is correct or efficient is an entirely different story. Concretely, javascript’s dynamism renders sound and precise static analysis of the language extremely difficult. This complicates the development of tooling for javascript which could help programmers write correct and efficient code. Sound and precise analysis of javascript is beyond the state of the art, and in this thesis we explore the effectiveness of using unsound analysis to build tools to detect and remediate inefficiencies in asynchronous javascript programs. We explore the following thesis statement: Unsound analysis of asynchronous javascript applications yields actionable insights and effective optimizations. We support this statement with four approaches to detect and remediate sub-optimal anti-patterns in various application domains. Promising results in all cases suggest that perfect is the enemy of good, and that unsound approaches are viable and useful for improving javascript code.
The book uses a concise, to-the-point approach to help developers understand and use the power of Jasmine to create better and more maintainable *** book is a must-have guide for web developers who are new to the conc...
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ISBN:
(数字)9781782167211
ISBN:
(纸本)9781782167204
The book uses a concise, to-the-point approach to help developers understand and use the power of Jasmine to create better and more maintainable *** book is a must-have guide for web developers who are new to the concept of unit testing. It’s assumed that you have a basic knowledge of javascript and HTML.
With the development of Web3D technologies, the delivery and visualization of 3D models on the web is now possible and is bound to increase both in the industry and for the general public. However the interactive remo...
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ISBN:
(纸本)9781450321334
With the development of Web3D technologies, the delivery and visualization of 3D models on the web is now possible and is bound to increase both in the industry and for the general public. However the interactive remote visualization of 3D graphic data in a web browser remains a challenging issue. Indeed, most of existing systems suffer from latency (due to the data downloading time) and lack of adaptation to heterogeneous networks and client devices (i.e. the lack of levels of details);these drawbacks seriously affect the quality of user experience. This paper presents a technical solution for streaming and visualization of compressed 3D data on the web. Our approach leans upon three strong features: (1) a dedicated progressive compression algorithm for 3D graphic data with colors producing a binary compressed format which allows a progressive decompression with several levels of details;(2) the introduction of a javascript halfedge data structure allowing complex geometrical and topological operations on a 3D mesh;(3) the multi-thread javascript / WebGL implementation of the decompression scheme allowing 3D data streaming in a web browser. Experiments and comparison with existing solutions show promising results in terms of latency, adaptability and quality of user experience.
The success of a genetic programming system ill solving a problem is often a function of the available computational resources. For many problems, the larger the population size and the longer the genetic programming ...
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ISBN:
(纸本)9781595936974
The success of a genetic programming system ill solving a problem is often a function of the available computational resources. For many problems, the larger the population size and the longer the genetic programming run the more likely the system is to find a solution. In order to increase the probability of success oil difficult problems, designers and users of genetic programming systems often desire access to distributed computation, either locally or across the internet, to evaluate fitness cases more quickly. Most systems for internet-scale distributed computation require a user's explicit participation and the installation of client side software. We present a proof-of-concept system for distributed computation of genetic programming via asynchronous javascript and XML (AJAX) techniques which requires no explicit, user interaction and no installation of client side software. Clients automatically and possibly unknowingly participate in a distributed genetic programming system simply by visiting a webpage, thereby allowing for the solution of genetic programming problems without, running a single local fitness evaluation. The system can be easily introduced into existing webpages to exploit unused client-side computation for the solution of genetic programming and other problems.
This book is a fast-paced guide full of step-by-step instructions that teach you how to visualize social data using HTML5 and *** book is for developers who are excited about data and who want to share that excitement...
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ISBN:
(数字)9781782166559
ISBN:
(纸本)9781782166542
This book is a fast-paced guide full of step-by-step instructions that teach you how to visualize social data using HTML5 and *** book is for developers who are excited about data and who want to share that excitement with others. Developers who are interested in the data which can be extracted from social networks will also find this book hugely *** should have a working knowledge of both javascript and HTML.
A definitive guide to creating an intelligent web application with the best of machine learning and javascriptAbout This Book• Solve complex computational problems in browser with javascript• Teach your browser how to...
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ISBN:
(数字)9781788990301
ISBN:
(纸本)9781788998246
A definitive guide to creating an intelligent web application with the best of machine learning and javascript
About This Book
• Solve complex computational problems in browser with javascript
• Teach your browser how to learn from rules using the power of machine learning
• Understand discoveries on web interface and API in machine learning
Who This Book Is For
This book is for you if you are a javascript developer who wants to implement machine learning to make applications smarter, gain insightful information from the data, and enter the field of machine learning without switching to another language. Working knowledge of javascript language is expected to get the most out of the book.
What You Will Learn
• Get an overview of state-of-the-art machine learning
• Understand the pre-processing of data handling, cleaning, and preparation
• Learn Mining and Pattern Extraction with javascript
• Build your own model for classification, clustering, and prediction
• Identify the most appropriate model for each type of problem
• Apply machine learning techniques to real-world applications
• Learn how javascript can be a powerful language for machine learning
In Detail
In over 20 years of existence, javascript has been pushing beyond the boundaries of web evolution with proven existence on servers, embedded devices, Smart TVs, IoT, Smart Cars, and more. Today, with the added advantage of machine learning research and support for JS libraries, javascript makes your browsers smarter than ever with the ability to learn patterns and reproduce them to become a part of innovative products and applications.
Hands-on Machine Learning with javascript presents various avenues of machine learning in a practical and objective way, and helps implement them using the javascript language. Predicting behaviors, analyzing feelings, grouping data, and building neural models are some of the skills you will build from this book. You will learn how to train your machine learning models
javascript is one of the easiest, most straightforward ways to enhance a Web site with *** Teach Yourself javascript in 24 Hours serves as an easy-to-understand tutorial on both scripting basics and javascript itself....
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ISBN:
(纸本)9780672324062
javascript is one of the easiest, most straightforward ways to enhance a Web site with *** Teach Yourself javascript in 24 Hours serves as an easy-to-understand tutorial on both scripting basics and javascript itself. The book is written in a clear and personable style with an extensive use of practical, complete examples. The Third Edition of Sams Teach Yourself javascript in 24 Hours includes material on the latest developments in javascript and Web scripting. Readers will learn how to use javascript to enhance Web pages with interactive forms, objects, and cookies. They will also discover how to use javascript to work with games, animation, and multimedia
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