Simple encryption and decryption Professional

Xbase++ provides a set of classes to manage encryption for many kind of data, be it a simple character string, or a complete file. The classes reflect several roles used in encryption:

To encrypt a string, for example, you need to provide a key. A key can be generated by calling SecureKey():generate(), or manually supplied either in binary form or hexadecimal notation. After the key is setup, an instance of AesCrypt() is required to prepare for encryption and/or decryption. Both directions are possible, but the application must know about the encryption status of the data. The key object passed to AesCrypt():new() is not stored inside of this instance. For security reasons, The method oSecureKey:destroy() should be called right after supplying the key. Assigning NIL to a variable holding an instance of SecureKey() won't destroy the key immediately.

The CryptFile() class provides encryption/decryption at the level of files. Please refer to CryptFile() for details.