XML or Extensible Markup Language is a markup language developed by W3C (World Wide Consortium), the organization that sets standards for the markup language is intended Web.Yang language used to mark (markup) data so that data can be displayed or processed for a particular purpose . Examples of other markup languages such as HTML. XML is not a program, or library. XML is a technology, a standard with specific rules. In simple terms, an XML document is simply a plain text file which contains various tags that defined itself by making such an XML document. As the name implies, eXtensible Markup Language, an XML document is a document with markup, just as with HTML.
XML is not designed to replace HTML, XML is designed to describe data and focus on the data. Meanwhile, HTML is designed to display data and focus on how data is displayed. So XML not HTML replacement because they are designed differently. The relationship between XML and HTML more toward complementary. An XML document can be saved into a data and can use HTML to display the data.
XML documents consist of various tags such as the HTML.Tag-tag on the XML does not have a specific standard. To keep the tags that remain within the scope of the right path, then the whole rule of tags stored in the Document Type Definition (DTD) or XML Schema. With the rules stored in the DTD or XML Schema, an XML document is expected to be able to describe themselves (self-descriptive). To be confused with HTML tags that already have standards, but in the XML will have a broader meaning.
By storing information in XML file, the information can be forwarded to anyone, with any mediation. As long as the destination system can process XML, the information also will be up to the destination system. To process the XML tags that do not need to be done manually. There are many ways to do it. The algorithms used are also different.
With this principle, the exchange of information will become easier. It can be said of a system using XML as its file format. As will be sent to another system that is really not compatible (eg, from mainframe to PDA), this XML format can still be relied upon because the information will still be awake.
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DES (Data Encryption Standart)
DES History
• DES algorithm developed at IBM under the leadership of WL Tuchman in 1972. This algorithm is based on the Lucifer algorithm, which is made by Horst Feistel.
• This algorithm has been approved by the National Bureau of Standards (NBS) after its power rating by the National Security Agency (NSA), the United States.
Overview
• DES included in symmetric cryptographic systems and classified as the type block ciphers.
• DES operates on 64 bit block size. 64 bit DES encryption to 64 bits of plaintext to ciphertext using a key 56-bit internal (internal key) or upa-key (subkey). Internal key generated from an external key (external key) whose length is 64 bits.
• the global scheme of the DES algorithm is as follows (see Figure 1):
1. Dipermutasi plaintext block with initial permutation matrix (initial permutation or IP).
2. The result of initial permutation and then in-enciphering-16 times (16 rounds). Each round uses a different internal keys.
3. Results enciphering then dipermutasi with permutation matrix inverse (or inverse initial permutation IP-1) into ciphertext blocks.
Remove PC Optimizer 2010 – How To perform a PC Optimizer 2010 Removal On Your Computer
PC Optimizer 2010 is not a real spyware remover. It resembles the features and looks of genuine spyware removal software but has no ability to remove any virus, trojan or malware. PC Optimizer 2010 is the latest addition to the increasing list of rogue Antivirus programs. PC Optimizer 2010 is just a fake software to steal your money and to make your computer slow.
PC Optimizer 2010 gets into your computer when you download a free software or media codec for your Windows media player from a unsafe file sharing website. Most of the free files you download from the file sharing websites are bundled with Fake Antivirus programs. When you open the downloaded free file, the PC Optimizer 2010 program bundled with the free file gets installed on your computer.
Once installed PC Optimizer 2010 program changes your computer settings and will show many unwanted pop-up windows. PC Optimizer 2010 will run computer virus scanning by itself and will report that your computer is infected with dangerous Virus, Trojan and Spyware. PC Optimizer 2010 will force you to buy the licensed version of PC Optimizer 2010 to remove the virus infection from your computer. You should not fall into this trap. Please note that all the virus infection warnings it displays are fake and you should get rid of PC Optimizer 2010 program as soon as possible.
It is not easy to remove PC Optimizer 2010 program using manual removal method as you have to remove all the files and registry files related to PC Optimizer 2010 spyware infection. If you make any mistake when removing the registry files, your computer will crash. The procedure to remove registry files is not a easy task and is advisable only for advanced user’s.
One Easy Method To PC Optimizer 2010 Removal In Minutes
You can safely remove PC Optimizer 2010 using spyware removal tools. You need to scan your computer using spyware removal program. The program will find and remove all the PC Optimizer 2010 infected files from your computer automatically. After removing PC Optimizer 2010 program please update your current Antivirus program to prevent any future virus infection.
Click the following link to learn how to download Spyware Removal tool to Remove PC Optimizer 2010 Program and to perform PC Optimizer 2010 removal.
http://www.cleanallvirus.com/how-to-remove-pcoptimizer-2010-pcoptimizer-2010-removal/
Keep your computer safe and clean.
Read more: http://www.articlesbase.com/security-articles/remove-pc-optimizer-2010-how-to-perform-a-pc-optimizer-2010-removal-on-your-computer-3794113.html#ixzz17Lmc0C8b
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Virtual Private Network (VPN)
Membangun suatu VPN membutuhkan pertimbangan dan pekerjaan yang cukup banyak, termasuk pemrograman dan lain sebagainya. Membangun suatu VPN didasarkan pada dua prinsip, sesuai dengan namanya. Istilah virtual, berarti tidak adanya representasi fisik sebenarnya antara link ke dua site tersebut. Hal ini berarti tidak adanya dedicated link antar ke dua lokasi yang diinterkoneksi tersebut. Sehingga tidak perlu menarik kabel khusus antara ke dua lokasi. Tetapi dengan menggunakan jaringan yang telah ada yang juga digunakan oleh banyak perusahaan yang lainnya. Sehingga term virtual ini timbul dari kenyataan bahwa network ini dibangun di suatu environment yang tidak hanya digunakan untuk keperluan VPN ini.
Istilah private berkatitan dengan istilah virtual. Membangun virtual network di atas infrastruktur yang dapat Read the rest of this post
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