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XCrypt - encryption & decryption class wrapper

, 24 Oct 2012 CPOL
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This is an alternative for "XCrypt - encryption & decryption class wrapper"
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Introduction

This article is built on top of 'XCrypt' -- the legendary cryptography wrapper which had been around in CodeProject for a while.   Unfortunately the original author of the article has left the same unattended for several years.  I brought the same to the attention of CP Team vide http://www.codeproject.com/Messages/4409016/Article-Adoption.aspx and as per the guidance I am submitting this alternative branch. 

XCrypt helps as a generic encryption and decryption wrapper for .NET applications. Besides the same, it adds the following two algorithms (which are not part of .NET Base Class Library):

  • Blowfish
  • Twofish 
 As of this writing, I did have an observation of another algorithm called 'Blakesharp' (http://www.codeproject.com/Articles/286937/BlakeSharp-A-Csharp-Implementation-of-the-BLAKE-Ha). I have taken a humble initiative to get XCrypt update in having able to use this algorithm too. 

Background 

  1. Basic Concepts, BlowFish, TwoFish:  Credits to the parent XCrypt
  2. Blakesharp:  http://www.codeproject.com/Articles/286937/BlakeSharp-A-Csharp-Implementation-of-the-BLAKE-Ha 

Using the code

The sample code initializes the engine to 3DES, you also can call InitializeEngine again to reset the engine to a different algorithm. 

<pre lang="cs" id="pre0" style="white-space: pre-wrap; word-wrap: break-word; margin-removed 0px; ">XCryptEngine xe = new XCryptEngine();
...
xe.InitializeEngine(XCryptEngine.AlgorithmType.TripleDES);

enc_str = xe.Encrypt(src_str);
dec_str = xe.Decrypt(enc_str);

xe.DestroyEngine(); 

Points of Interest

  1. XCrypt earns the credit of making me learn different encryption algorithms besides kindling interest to explore on the same. 
  2. .NET has a good cryptography library but the paucity of documentation in MSDN as an end-to-end solution makes you run pillar to post whilst trying to decide on a particular algorithm. XCrypt endeavors to fulfill the gap. 

Changelog: 

The following are the changes from its parent (XCrypt): 

  1. Included the two BlakeSharp algorithm into XCrypt as I had highlighted. 
  2. The Test Application had hard-coded 'This is a test string' as the initial value'. To make it a  bit more realistic I have replaced that with srcText.Text = Environment.UserName.Length > 0 ? Environment.UserName : "Hello World";
  3. The Test Application had bloated piece of code that the Algorithm Names were repeatedly hard-bound. I have tried replacing the same with a quick and small reflection code (LoadEnumMembers())
  4. The Test Application had a bug that for Hash where decryption would not be possible. Hence I have changed this by exposing two more public methods disabling Decrypt button for the same. 
  5. I have removed the setup and other project which might not be of utility value for lot of users. 

History 

  1. First Update Built on XCrypt in a humble endeavor to make it a one-stop lookup for cryptography library in .NET 

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Vasudevan Deepak Kumar
Software Developer
India India
Vasudevan Deepak Kumar is from Chennai, India who has been in the programming career since 1994, when he was 15 years old. He has his Bachelors of Engineering (in Computer Science and Engineering) from Vellore Engineering College. He also has a MBA in Systems from Alagappa University, Karaikudi, India.
He started his programming career with GWBasic and then in his college was involved in developing programs in Fortran, Cobol, C++. He has been developing in Microsoft technologies like ASP, SQLServer 2000.
His current focus is ASP.NET, C#, VB.NET, PHP, SQL Server and MySQL. In his past-time, he listens to polite Carnatic Music. But the big question is that with his current Todolist backlog, does he get some past time?
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Comments and Discussions


Discussions posted for the Published version of this article. Posting a message here will take you to the publicly available article in order to continue your conversation in public.
 
GeneralMy vote of 4 PinmemberAshutosh Phoujdar25-Jun-13 0:19 
GeneralMy vote of 5 PinmemberVitorHugoGarcia21-Mar-13 7:22 
GeneralMy vote of 4 PinmemberPrasad Khandekar20-Mar-13 23:08 
GeneralMy vote of 4 PinmemberShubham Choudhary20-Mar-13 21:26 
GeneralMy vote of 5 Pinmvpadriancs26-Jan-13 18:19 
GeneralMy vote of 5 PinmemberEdo Tzumer25-Oct-12 2:51 
Questionwhere is the project? PinmemberFabio Malpezzi25-Oct-12 0:29 
AnswerRe: where is the project? PinmemberVasudevan Deepak Kumar25-Oct-12 1:05 

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