Cryptography in .Net

An old but good article on Cryptography in .Net:

Part 1 http://www.c-sharpcorner.com/UploadFile/Gowri%20S%20Paramasivam/CryptEncryption11232005065300AM/CryptEncryption.aspx?ArticleID=2f4b0ae5-28e8-424b-825f-85a7043b5247

Park 2 http://www.c-sharpcorner.com/UploadFile/Gowri%20S%20Paramasivam/Cryptography211242005003308AM/Cryptography2.aspx

Part 3: http://www.c-sharpcorner.com/UploadFile/Gowri%20S%20Paramasivam/Cryptography311242005015640AM/Cryptography3.aspx