The Alleged RC4 Cryptography Provider Class Library is a DLL file that includes an implementation of a well-known symmetric encryption algorithm that is not present in the System.Security.Cryptography namespace of the mscorlib library.
A library written in Visual C# for encrypting a text message into an image file, and decrypting an image file to get the text message using Rijndael Algorithm, RSA Algorithm, and LSB Substitution Algorithm.
ActiveLock is an open-source copy protection, software licensing framework for all development enviroments supporting COM+ architecture. Core DLL available in VB2008 and VB6. Samples in C++, C#, Excel/Access VBA and keygens in PHP, ASP.NET available.