Comparing Java and .NET Security
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Domain-Specific Programming Systems
Lecture 22: Domain-Specific Programming Systems Parallel Computer Architecture and Programming CMU 15-418/15-618, Spring 2020 Slide acknowledgments: Pat Hanrahan, Zach Devito (Stanford University) Jonathan Ragan-Kelley (MIT, Berkeley) Course themes: Designing computer systems that scale (running faster given more resources) Designing computer systems that are efficient (running faster under constraints on resources) Techniques discussed: Exploiting parallelism in applications Exploiting locality in applications Leveraging hardware specialization (earlier lecture) CMU 15-418/618, Spring 2020 Claim: most software uses modern hardware resources inefficiently ▪ Consider a piece of sequential C code - Call the performance of this code our “baseline performance” ▪ Well-written sequential C code: ~ 5-10x faster ▪ Assembly language program: maybe another small constant factor faster ▪ Java, Python, PHP, etc. ?? Credit: Pat Hanrahan CMU 15-418/618, Spring 2020 Code performance: relative to C (single core) GCC -O3 (no manual vector optimizations) 51 40/57/53 47 44/114x 40 = NBody 35 = Mandlebrot = Tree Alloc/Delloc 30 = Power method (compute eigenvalue) 25 20 15 10 5 Slowdown (Compared to C++) Slowdown (Compared no data no 0 data no Java Scala C# Haskell Go Javascript Lua PHP Python 3 Ruby (Mono) (V8) (JRuby) Data from: The Computer Language Benchmarks Game: CMU 15-418/618, http://shootout.alioth.debian.org Spring 2020 Even good C code is inefficient Recall Assignment 1’s Mandelbrot program Consider execution on a high-end laptop: quad-core, Intel Core i7, AVX instructions... Single core, with AVX vector instructions: 5.8x speedup over C implementation Multi-core + hyper-threading + AVX instructions: 21.7x speedup Conclusion: basic C implementation compiled with -O3 leaves a lot of performance on the table CMU 15-418/618, Spring 2020 Making efficient use of modern machines is challenging (proof by assignments 2, 3, and 4) In our assignments, you only programmed homogeneous parallel computers. -
Top 40 .NET Interview Questions & Answers
https://career.guru99.com/ Guru99 Provides FREE ONLINE TUTORIAL on Various courses like Java | MIS | MongoDB | BigData | Cassandra | Web Services ------------------------------------------------------------------------------------------------------------------------------- SQLite | JSP | Informatica | Accounting | SAP Training | Python ------------------------------------------------------------------------------------------------------------------------------- Excel | ASP Net | HBase | Testing | Selenium | CCNA | NodeJS ------------------------------------------------------------------------------------------------------------------------------- TensorFlow | Data Warehouse | R Programming | Live Projects | DevOps ------------------------------------------------------------------------------------------------------------------------------- Top 40 .NET Interview Questions & Answers 1) Explain what is .NET Framework? The.Net Framework is developed by Microsoft. It provides technologies and tool that is required to build Networked Applications as well as Distributed Web Services and Web Applications. 2) What does .NET Framework provides? .NET Framework renders the necessary compile time and run time foundation to build and run any language that conforms to the Common Language Specification (CLS). 3) Mention what are main components of .Net framework? The main components of .Net framework are Common Language Runtime (CLR) .Net Framework Class Library (FCL) Application Domains Runtime Host Cross-Language Interoperability Side-by-Side Execution -
IJIRT | Volume 2 Issue 6 | ISSN: 2349-6002
© November 2015 | IJIRT | Volume 2 Issue 6 | ISSN: 2349-6002 .Net Surbhi Bhardwaj Dronacharya College of Engineering Khentawas, Haryana INTRODUCTION as smartphones. Additionally, .NET Micro .NET Framework (pronounced dot net) is Framework is targeted at severely resource- a software framework developed by Microsoft that constrained devices. runs primarily on Microsoft Windows. It includes a large class library known as Framework Class Library (FCL) and provides language WHAT IS THE .NET FRAMEWORK? interoperability(each language can use code written The .NET Framework is a new and revolutionary in other languages) across several programming platform created by Microsoft for languages. Programs written for .NET Framework developingapplications. execute in a software environment (as contrasted to hardware environment), known as Common It is a platform for application developers. Language Runtime (CLR), an application virtual It is a Framework that supports Multiple machine that provides services such as Language and Cross language integration. security, memory management, and exception handling. FCL and CLR together constitute .NET IT has IDE (Integrated Development Framework. Environment). FCL provides user interface, data access, database Framework is a set of utilities or can say connectivity, cryptography, web building blocks of your application system. application development, numeric algorithms, .NET Framework provides GUI in a GUI and network communications. Programmers manner. produce software by combining their own source code with .NET Framework and other libraries. .NET is a platform independent but with .NET Framework is intended to be used by most new help of Mono Compilation System (MCS). applications created for the Windows platform. MCS is a middle level interface. Microsoft also produces an integrated development .NET Framework provides interoperability environment largely for .NET software called Visual between languages i.e. -
Configure .NET Code-Access Security
© 2002 Visual Studio Magazine Fawcette Technical Publications Issue VSM November 2002 Section Black Belt column Main file name VS0211BBt2.rtf Listing file name -- Sidebar file name -- Table file name VS0211BBtb1.rtf Screen capture file names VS0211BBfX.bmp Infographic/illustration file names VS0211BBf1,2.bmp Photos or book scans ISBN 0596003471 Special instructions for Art dept. Editor LT Status TE’d3 Spellchecked (set Language to English U.S.) * PM review Character count 15,093 + 1,162 online table Package length 3.5 (I think, due to no inline code/listings) ToC blurb Learn how to safely grant assemblies permissions to perform operations with external entities such as the file system, registry, UIs, and more. ONLINE SLUGS Name of Magazine VSM November 2002 Name of feature/column/department Black Belt column 180-character blurb Learn how to safely grant assemblies permissions to perform operations with external entities such as the file system, registry, UIs, and more. 90-character blurb Learn how to safely grant assemblies permissions to perform operations with external entities. 90-character blurb describing download NA Locator+ code for article VS0211BB_T Photo (for columnists) location On file TITLE TAG & METATAGS <title> Visual Studio Magazine – Black Belt - Secure Access to Your .NET Code Configure .NET Code-Access Security </title> <!-- Start META Tags --> <meta name="Category" content=" .NET "> <meta name="Subcategory" content=" C#, Visual Basic .NET "> <meta name="Keywords" content=" .NET, C#, Visual Basic .NET, security permission, security evidence, security policy, permission sets, evidence, security, security permission stack walk, custom permission set, code group "> [[ Please check these and add/subtract as you see fit .]] <meta name="DESCRIPTION" content=" Learn how to grant assemblies permissions to perform operations with external entities such as the file system, registry, UIs, and more. -
A Java Security Scanner for Eclipse
Colby College Digital Commons @ Colby Honors Theses Student Research 2005 JeSS – a Java Security Scanner for Eclipse Russell Spitler Colby College Follow this and additional works at: https://digitalcommons.colby.edu/honorstheses Part of the Databases and Information Systems Commons, Other Computer Engineering Commons, Programming Languages and Compilers Commons, and the Systems Architecture Commons Colby College theses are protected by copyright. They may be viewed or downloaded from this site for the purposes of research and scholarship. Reproduction or distribution for commercial purposes is prohibited without written permission of the author. Recommended Citation Spitler, Russell, "JeSS – a Java Security Scanner for Eclipse" (2005). Honors Theses. Paper 567. https://digitalcommons.colby.edu/honorstheses/567 This Honors Thesis (Open Access) is brought to you for free and open access by the Student Research at Digital Commons @ Colby. It has been accepted for inclusion in Honors Theses by an authorized administrator of Digital Commons @ Colby. JeSS – a Java Security Scanner for Eclipse Russell Spitler Senior Honors Thesis Spring 2005 Colby College Department of Computer Science Advisor: Dale Skrien Contents Chapter 1 Introduction 1 Chapter 2 Secure Coding and Java Security 2.1 – Secure Coding 3 2.2 – Java Security 7 Chapter 3 Java Security Holes 3.1 – Don’t depend on initialization 13 3.2 – Make everything final 14 3.3 – Make your code unserializable and undeserializable 16 3.4 – Make your class non-Cloneable 19 3.5 – Don’t rely on -
Eagle: Tcl Implementation in C
Eagle: Tcl Implementation in C# Joe Mistachkin <[email protected]> 1. Abstract Eagle [1], Extensible Adaptable Generalized Logic Engine, is an implementation of the Tcl [2] scripting language for the Microsoft Common Language Runtime (CLR) [3]. It is designed to be a universal scripting solution for any CLR based language, and is written completely in C# [4]. Su- perficially, it is similar to Jacl [5], but it was written from scratch based on the design and imple- mentation of Tcl 8.4 [6]. It provides most of the functionality of the Tcl 8.4 interpreter while bor- rowing selected features from Tcl 8.5 [7] and the upcoming Tcl 8.6 [8] in addition to adding en- tirely new features. This paper explains how Eagle adds value to both Tcl/Tk and CLR-based applications and how it differs from other “dynamic languages” hosted by the CLR and its cousin, the Microsoft Dy- namic Language Runtime (DLR) [9]. It then describes how to use, integrate with, and extend Ea- gle effectively. It also covers some important implementation details and the overall design phi- losophy behind them. 2. Introduction This paper presents Eagle, which is an open-source [10] implementation of Tcl for the Microsoft CLR written entirely in C#. The goal of this project was to create a dynamic scripting language that could be used to automate any host application running on the CLR. 3. Rationale and Motivation Tcl makes it relatively easy to script applications written in C [11] and/or C++ [12] and so can also script applications written in many other languages (e.g. -
Moscow ML .Net Owner's Manual
Moscow ML .Net Owner's Manual Version 0.9.0 of November 2003 Niels Jørgen Kokholm, IT University of Copenhagen, Denmark Peter Sestoft, Royal Veterinary and Agricultural University, Copenhagen, Denmark This document describes Moscow ML .Net 0.9.0, a port of Moscow ML 2.00 to the .Net platform. The focus is on how Moscow ML .Net differs from Moscow ML 2.0. Three other documents, the Moscow ML Owner’s Manual [7], the Moscow ML Language Overview [5] and the Moscow ML Library Documentation [6] describe general aspects of the Moscow ML system. Moscow ML implements Standard ML (SML), as defined in the 1997 Definition of Standard ML, including the SML Modules language and some extensions. Moreover, Moscow ML supports most re- quired parts of the SML Basis Library. It supports separate compilation and the generation of stand-alone executables. The reader is assumed to be familiar with the .Net platform [2]. Contents 1 Characteristics of Moscow ML .Net 2 1.1 Compiling and linking 2 1.2 Command-line options 3 1.3 Additional primitives in the built-in units 3 1.4 The libraries 4 2 Installation 5 3 External programming interface 5 3.1 How external assemblies are found and loaded 5 3.2 How to call a .Net static method from Moscow ML .Net. 6 3.2.1 An example 7 3.2.2 Passing arguments and using results 7 3.2.3 Representation of ML Values 8 3.2.4 Notes 8 3.2.5 An experimental auto-marshalling import mechanism: clr_val 8 3.3 How to call an ML function from .Net 10 3.3.1 Example 10 3.3.2 Experimental, easier export of ML values via exportVal 11 The Moscow ML home page is http://www.dina.kvl.dk/~sestoft/mosml.html 1 1 Characteristics of Moscow ML .Net Unlike most other ports of Moscow ML, this port is not based on porting the Caml Light runtime, but is based on the creation of a new backend that generates .Net CIL code. -
NET Framework
Advanced Windows Programming .NET Framework based on: A. Troelsen, Pro C# 2005 and .NET 2.0 Platform, 3rd Ed., 2005, Apress J. Richter, Applied .NET Frameworks Programming, 2002, MS Press D. Watkins et al., Programming in the .NET Environment, 2002, Addison Wesley T. Thai, H. Lam, .NET Framework Essentials, 2001, O’Reilly D. Beyer, C# COM+ Programming, M&T Books, 2001, chapter 1 Krzysztof Mossakowski Faculty of Mathematics and Information Science http://www.mini.pw.edu.pl/~mossakow Advanced Windows Programming .NET Framework - 2 Contents The most important features of .NET Assemblies Metadata Common Type System Common Intermediate Language Common Language Runtime Deploying .NET Runtime Garbage Collection Serialization Krzysztof Mossakowski Faculty of Mathematics and Information Science http://www.mini.pw.edu.pl/~mossakow Advanced Windows Programming .NET Framework - 3 .NET Benefits In comparison with previous Microsoft’s technologies: Consistent programming model – common OO programming model Simplified programming model – no error codes, GUIDs, IUnknown, etc. Run once, run always – no "DLL hell" Simplified deployment – easy to use installation projects Wide platform reach Programming language integration Simplified code reuse Automatic memory management (garbage collection) Type-safe verification Rich debugging support – CLR debugging, language independent Consistent method failure paradigm – exceptions Security – code access security Interoperability – using existing COM components, calling Win32 functions Krzysztof -
Eu-19-Zhang-New-Exploit-Technique
New Exploit Technique In Java Deserialization Attack • Yang Zhang • Yongtao Wang Keyi Li “在此键⼊引⽂。• ” • Kunzhe Chai –Johnny Appleseed New Exploit Technique In Java Deserialization Attack Back2Zero Team BCM Social Corp. BCM Social Group Who are we? Yang Zhang(Lucas) • Founder of Back2Zero Team & Leader of Security Research Department in BCM Social Corp. • Focus on Application Security, Cloud Security, Penetration Testing. • Spoke at various security conferences such as CanSecWest, POC, ZeroNights. Keyi Li(Kevin) • Master degree majoring in Cyber Security at Syracuse University. • Co-founder of Back2Zero team and core member of n0tr00t security team. • Internationally renowned security conference speaker. –Johnny Appleseed Who are we? Yongtao Wang • Co-founder of PegasusTeam and Leader of Red Team in BCM Social Corp. • Specializes in penetration testing and wireless security. • Blackhat, Codeblue, POC, Kcon, etc. Conference speaker. Kunzhe Chai(Anthony) • Founder of PegasusTeam and Chief Information Security Officer in BCM Social Corp. • Author of the well-known security tool MDK4. • Maker of China's first Wireless Security Defense Product Standard and he also is the world's first inventor of Fake Base Stations defense technology–Johnny Appleseed Agenda • Introduction to Java Deserialization • Well-Known Defense Solutions • Critical vulnerabilities in Java • URLConnection • JDBC • New exploit for Java Deserialization • Takeaways 2015: Chris Frohoff and Gabriel Lawrence presented their research into Java object deserialization vulnerabilities ultimately resulting in what can be readily described as the biggest wave of RCE bugs in Java history. Introduction to Java Deserialization Java Deserialization Serialization • The process of converting a Java object into stream of bytes. Databases Deserialization Serialization • A reverse process of creating a Java object from stream of bytes. -
Investigating the Feasibility of an MPI-Like Library Implemented in .Net Using Only Fully Managed Code
Investigating the Feasibility of an MPI-like Library Implemented in .Net Using Only Fully Managed Code Daniel Holmes MSc in High Performance Computing The University of Edinburgh Year of Presentation: 2007 Abstract The .Net development platform and the C# language, in particular, offer many benefits to programmers including increased productivity, security, reliability and robustness, as well as standards-based application portability and cross-language inter-operation. The Message Passing Interface (MPI) is a standardised high performance computing paradigm with efficient, frequently-used implementations in many popular languages. A partial implementation of McMPI, the first MPI-like library to be targeted at .Net and written in pure C#, is presented. It is sufficiently complete to demonstrate typical application code and to evaluate relative performance. Although the effective bandwidth for large messages (over 100 Kbytes) using 100Mbit/s Ethernet is good, the overheads introduced by .Net remoting and object serialisation are shown to result in high latency and to limit bandwidth to 166Mbit/s when using a 1Gbit/s Ethernet interconnection. A possible resolution that still uses pure C#, i.e. using .Net sockets, is proposed but not implemented. Contents Chapter 1. Introduction ..................................................................................... 1 Chapter 2. Background ..................................................................................... 2 2.1 Object-Oriented HPC ................................................................................. -
Apache Harmony Project Tim Ellison Geir Magnusson Jr
The Apache Harmony Project Tim Ellison Geir Magnusson Jr. Apache Harmony Project http://harmony.apache.org TS-7820 2007 JavaOneSM Conference | Session TS-7820 | Goal of This Talk In the next 45 minutes you will... Learn about the motivations, current status, and future plans of the Apache Harmony project 2007 JavaOneSM Conference | Session TS-7820 | 2 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 3 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 4 Apache Harmony In the Beginning May 2005—founded in the Apache Incubator Primary Goals 1. Compatible, independent implementation of Java™ Platform, Standard Edition (Java SE platform) under the Apache License 2. Community-developed, modular architecture allowing sharing and independent innovation 3. Protect IP rights of ecosystem 2007 JavaOneSM Conference | Session TS-7820 | 5 Apache Harmony Early history: 2005 Broad community discussion • Technical issues • Legal and IP issues • Project governance issues Goal: Consolidation and Consensus 2007 JavaOneSM Conference | Session TS-7820 | 6 Early History Early history: 2005/2006 Initial Code Contributions • Three Virtual machines ● JCHEVM, BootVM, DRLVM • Class Libraries ● Core classes, VM interface, test cases ● Security, beans, regex, Swing, AWT ● RMI and math 2007 JavaOneSM Conference | Session TS-7820 | -
Java Security, 2Nd Edition
Table of Contents Preface..................................................................................................................................................................1 Who Should Read This Book?.................................................................................................................1 Versions Used in This Book....................................................................................................................2 Conventions Used in This Book..............................................................................................................2 Organization of This Book.......................................................................................................................3 What's New in This Edition.....................................................................................................................5 How to Contact Us...................................................................................................................................5 Acknowledgments....................................................................................................................................6 Feedback for the Author..........................................................................................................................6 Chapter 1. Java Application Security...............................................................................................................7 1.1 What Is Security?...............................................................................................................................7