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Developing Microsoft® .NET Controls with Microsoft Visual Basic® .NET by John Connell

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Incorporating .NET Encryption in a UserControl

One of the real powerhouse namespaces in .NET is Cryptography. The System. Security.Cryptography namespace provides cryptographic services, including secure encoding and decoding of data, as well as many other operations, such as hashing, random number generation, and message authentication.

Let’s say you have some sensitive documents on your hard drive that you don’t want compromised by prying eyes. Over the years, many of us have written relatively simple encryption algorithms by XORing information. Several computer magazines illustrate simplistic and naïve methods to scramble data. While these algorithms might keep your little brother from prying at the data, they won’t keep these documents secret ...

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