The CryptoSys API is a developer's toolkit of fast, efficient symmetrical cryptographic functions in Visual Basic, VBA, VB.NET/VB2005/8, C/C++, C#, and ASP.
You can incorporate it in your own apps and it can be called from VBA applications like Access, Excel and Word.
It provides four of the major block cipher algorithms, a stream cipher algorithm, key wrap, secure message digest hash algorithms, the HMAC message authentication algorithm, the CMAC algorithm, a data compression facility, a password-based key derivation function (PBKDF2), a secure random number generator and other utilities.
If you need to do "asymmetric" public key cryptography, look at our alternative product CryptoSys PKI Toolkit.
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