First, thank you for your interest. The source code it's fully C# and Tested on .NET Core 2. GA about symmetric key encryption it's patent pending.
Mediacrypt.IDcypher is a newly developed security library, which is now available to the general developer community. Containing an array of powerful tools, hash functions, and ciphers, IDcypher is designed to bring a complete package of encryption and security aids easily to hand. Data compression and encryption are accomplished with platform-independent code that will work in 32 bit and 64 bit environments. Advanced features such as Encrypted Storage provide reliable protection for structured and file-based data.
A regular license allows an item to be used in one project for either personal or commercial use by you or on behalf of a client. The item cannot be offered for resale either on its own or as part of a project. Distribution of source files is not permitted.
An extended license allows an item to be used in unlimited projects for either personal or commercial use. The item cannot be offered for resale "as-is". It is allowed to distribute/sublicense the source files as part of a larger project.