Performance measurement

My favorite approach to measure performance of my code in AX is WinAPI::getTickCount() method. I find it as the most precise and simple way to do a quick measurement. Code profiler measures performance quite well, however it takes much more time to get the results.
How do you measure performance of your code in AX?

Example:
int timeInterval;
;

timeInterval = WinAPI::getTickCount();
doSomething();
timeInterval = WinAPI::getTickCount() - timeInterval;

Simple cryptography in AX

There are methods in AX which allow to encrypt and decrypt data easily. Those methods are WinAPIServer::cryptProtectData() for encryption and WinAPIServer::cryptUnProtectData() for decryption. As input and output parameters these methods use CryptoBlob extended data type, which is a container. However, this is not an arbitrary container. It should contain only bytes (integers in the range 0-255). There are methods on the Global class which allow to convert from and to CryptoBlob type, for example, Global::binary2cryptoblob() and Global::cryptoblob2binary().

Sample usage:
public static void cryptoTest()
{
    str text = "Here goes some text";
    CryptoBlob encryptedCryptoBlob;
    str decryptedText;
    ;

    encryptedCryptoBlob = WinAPIServer::cryptProtectData(str2cryptoblob(text));
    conview(encryptedCryptoBlob);
    decryptedText = cryptoblob2str(WinAPIServer::cryptUnProtectData(encryptedCryptoBlob));
    info(decryptedText);
}