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我的软件有一个相当粗略的许可证密钥,它找到一台机器的所有 mac 地址并加密它们,然后将它们与注册表中保存的加密值进行比较。如果注册表中的值与我刚刚找到的任何值匹配,则将加载软件。我希望我总是会得到相同的 MAC 地址值,但对于一些机器来说,这是不正确的。谁能解释为什么他们的 MAC 地址不固定,或者如何解决这个问题?

谢谢

        //// GET MAC ADDRESS
        String sMacAddress = String.Empty;
        ManagementScope theScope = new ManagementScope("\\\\" +Environment.MachineName + "\\root\\cimv2");
        DGCSLogger.log.Trace("Management scope");

        StringBuilder theQueryBuilder = new StringBuilder();

        theQueryBuilder.Append("SELECT MACAddress FROM Win32_NetworkAdapter");
        ObjectQuery theQuery = new ObjectQuery(theQueryBuilder.ToString());

        DGCSLogger.log.Trace("Creating searcher");

        ManagementObjectSearcher theSearcher = new ManagementObjectSearcher(theScope, theQuery);
        DGCSLogger.log.Trace("Creating collection");
        ManagementObjectCollection theCollectionOfResults = theSearcher.Get();

        DGCSLogger.log.Trace("Got management objects");

        //// GET VALUE FROM REGISTRY
        String sSavedScrambled = RegistryHelper.GetCurrentUserValue(@"Software\VB and VBA Program Settings\FMPos\settings", "LicenceKey");
        String sSavedLicenceKey = String.Empty;
        if (sSavedScrambled != null)
            sSavedLicenceKey = DGCS.Common.Password.UnScramblePassword(sSavedScrambled);

        String sMacNoLicenceKey = String.Empty;
        String sMacNo  = String.Empty;


         ///// COMPARE VALUES WITH REGISTRY VALUE
        foreach (ManagementObject theCurrentObject in theCollectionOfResults)
        {
            DGCSLogger.log.Trace("foreach object");

            if (theCurrentObject["MACAddress"] != null)
            {
                DGCSLogger.log.Trace("foreach object: " + theCurrentObject["MACAddress"].ToString().Substring(0, 5));

                String macAdd =  theCurrentObject["MACAddress"].ToString();

                sMacNo = DGCS.Common.Password.ScrambleMacNumber(theCurrentObject["MACAddress"].ToString());
                sMacNoLicenceKey = DGCS.Common.Password.CreateMacNoPassword(sMacNo);

                DGCSLogger.log.Trace(": " + theCurrentObject["MACAddress"].ToString().Substring(0, 5));

                if (sMacNoLicenceKey.Trim() == sSavedLicenceKey.Trim())
                    lkCheck.HasLicenceKey = true;
            }
        }
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1 回答 1

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各种可能的原因:

  1. 他们可能已经更改了网卡
  2. WMI 枚举可能以不同的顺序返回它们(我没有看到任何排序)
  3. 他们实际上可能会更改 MAC 地址(是的,这是可能的
  4. ...

这就是为什么 MAC 地址实际上并不是创建许可证密钥的良好参考。

于 2013-06-11T09:34:12.947 回答