/// <summary>
/// Compute HMAC.
/// </summary>
/// <param name="key">The key of HMAC.</param>
/// <param name="buf">The data to be computed.</param>
/// <returns>The computed result.</returns>
internal static byte[] HMAC(byte[] key, byte[] buf)
{
return(CryptoUtility.ComputeMd5Hmac(key, buf));
}
