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According to the "Executive Summary" of RFC 1321,
"The MD5 algorithm takes as input a message of arbitrary length and produces as output a 128-bit "fingerprint" or "message digest" of the input. It is conjectured that it is computationally infeasible to produce two messages having the same message digest, or to produce any message having a given prespecified target message digest. The MD5 algorithm is intended for digital signature applications, where a large file must be "compressed" in a secure manner before being encrypted with a private (secret) key under a public-key cryptosystem such as RSA."
This algorithm was developed by Professor Ronald L. Rivest of MIT and can be found presented in several languages. What I provide to you here is a C++ derivative of the original C implementation of Professor Rivets.
The screenshot here is of the MFC demo projects that I've included to show how to make use of the library calls. With this, you can genereate MD5 fingerprints of text phrases or files.
The library is well insulated and provides wrapper functions to make it as easy to use as this:
CString csString = MD5String("Some string you want to generate an MD5 key for.");
DownloadsDownload demo project - 127 Kb
Download source - 7 Kb