The Wayback Machine - https://web.archive.org/web/20111028053958/http://www.codeguru.com/vb/gen/vb_misc/encryption/

    Encryption

    Creating Your Own Encryption / Decryption Program Using VB.NET 2005

    With this article, I will try my best to assist you in protecting valuable information such as Passwords, account numbers and so on.

    VB .NET Tip: Encryption in Just Twelve Lines of Code!

    If you don't want the overhead or complexity of a government-standard encryption technique, there is a simple solution.

    Encrypt DataSets for Offline Storage

    Learn how to encrypt offline data, .NET style. Paul Kimmel offers you the opportunity to experiment with ADO.NET, XML serialization, streams, and the DPAPI—technologies you can use to encrypt user data.

    Combining Symmetric and Asymmetric Encryption

    Explains symmetric and asymmetric encryption, and then shows how to combine them. The .NET framework is used. All code snippets are written in VB.NET.

    Encrypting Data in .NET

    If you want to conceal chunks of data like connection strings or data written to a database or XML file then you could use the simplified class resting on the CryptoAPI demonstrated in this article.