This article started with a quest. I wanted a way to store my passwords in an encrypted file because I have a couple of dozen passwords and my memory is not what it once was. I know there are commercial tools to do this, but it looked like a useful exercise for learning a new technique in .NET.
I ended up with a simple but complete program in Visual Basic® .NET for encrypting and decrypting a file, and I learned a lot along the way. Since encryption is an important topic for several kinds of development, this article shows you how to construct that program.
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