Saturday, November 7, 2009

Waht is CrypTool ?


CrypTool Introduction


The application CrypTool is a free e-learning application for Windows. You can use it to apply and analyze cryptographic algorithms. The current version of CrypTool (Download) is used all over the world. It supports both contemporary teaching methods at schools and universities as well as awareness training for employees and civil servants.
The current version offers beside others the following highlights:
Numerous classic and modern cryptographic algorithms (encryption and decryption, key generation, secure passwords, authentication, secure protocols, ...)
Visualisation of several methods (e.g. Caesar, Enigma, RSA, Diffie-Hellman, digital signatures, AES)
Cryptanalysis of certain algorithms (e.g. Vigenère, RSA, AES)
Crypt-analytical measuring methods (e.g. entropy, n-grams, autocorrelation)
Auxiliary methods (e.g. primality tests, factorisation, base64 coding)
Tutorial about number theory
Comprehensive online help
Supportive script with further information about cryptology
From its original use of information security training for a company, CrypTool has developed into an outstanding open source project for cryptology related topics.
Since spring 2008, the CrypTool project has been operating the Crypto Portal for Teachers. Thus far, the portal is only available in German and is intended to act as a platform for teachers to share teaching materials about cryptology and related links.
Since spring 2009, the CrypTool project has also been operating the webseite CrypTool-Online. This portal gives people interested in cryptology the possiblity to try out a variety of ciphers and encryption methods in their own browser without downloading and installing any kind of software. On this website for first-time users and young people we provide cryptology in an appealing and easy way. For advanced tasks and problems there is still the offline version of CrypTool which can be downloaded and installed.
Currently the CrypTool team is working on two projects intended to become the successors of the current release version CrypTool 1.4.x which has been written in C++. Both follow-up projects use state-of-the-art standards of software development, but are still in beta status:
CrypTool 2.0 is developed in C# with Visual Studio 2008 (Express Edition) and WPF. In July 2008 the first beta version (for developers and end users) has been released. It is continuously updated. CrypTool 2.0 provides a fully developed architecture and usable cryptographic functionality combined with a pathbreaking drag-and-drop GUI.
JCrypTool is developed in Java and based on Eclipse RCP. The current beta version (called milestone 5, intended for developers and users) has been released in September 2009. JCrypTool is platform independent (Windows, Linux, Mac) and makes use of the FlexiProvider (a powerful toolkit developed by the TU Darmstadt) and BouncyCastle for the Java Cryptography Architecture JCA.

Friday, November 6, 2009

Microsoft Security Essentials Antiviruse


About Microsoft Security Essentials


Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.
Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.
Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.
Learn more at the Microsoft Malware Protection Center
Find information, definitions, and analyses of all the latest threats that Microsoft Security Essentials can help protect you against in the Microsoft Malware Protection Center
Need security for your business? Protect your computers with Microsoft Forefront Client Security
*Your PC must run genuine Windows to install Microsoft Security Essentials. Learn more about genuine