你和很多人分享的秘密就不是秘密了。如果你的代码中有秘密的东西，混淆它是没有保护的;它只需要去混淆一次。如果你有什么秘密不想和你的客户分享，那就不要和你的客户分享。将代码编写为web服务，并将超级机密代码保存在自己的服务器上，只有您可以看到它。

你无法阻止别人破解你的软件。

However, you can make them create cracks that will hurt your sales less. Keygenerators that can issue a valid registration code for your software are much worse than simple patches that remove registration incentives from your software. That's because a crack will work for one software version only, and will cease to work with the next software update you release. The keygenerator will continue to work until you change your registration key algorithm and that's something you don't want to do often because it will put off your honest clients.

因此，如果您正在寻找一种方法来对抗非法的密钥生成器，并且您不想使用不对称加密，因为这会生成很长的注册码，您可以看看部分密钥验证。

Partial Key Verification makes sure that each illegal keygenerator works only for one particular release of your software. Basically what you do is to make sure that each release of your software only links with the code for checking SOME digits of the registration code. Which digits exactly is random, so crackers would have to reverse engineer many different versions of your software and combine all this into one keygenerator in order to release a keygenerator that works for all versions of your software.

如果你定期发布新的软件版本，这将导致大量的密钥生成器散布在各种软件盗版档案中，这些文件不再工作。潜在的软件盗版者通常会寻找最新版本的破解或关键元素，所以他们可能会尝试其中的一些，并最终放弃。

我在我的(c++)新共享游戏中使用了部分密钥验证，它非常有效。之前我们遇到了很多无法对抗的关键生成器问题。后来出现了许多漏洞，一些按键生成器只适用于特定版本的游戏，但没有一个按键生成器适用于所有版本。我们定期发布游戏的小更新，让之前存在的所有漏洞都变得无用。

似乎有一个用于部分密钥验证的开源。net框架，尽管我还没有尝试过。

net反应堆

更新

Jared指出de4dot声称能够反编译它。

.NET Reactor provides complete protection for your sensitive intellectual property by converting your .NET assemblies into unmanaged processes which cannot be understood as CIL, and which no existing tool can decompile. Hackers have no access to any intelligible form of your source. Powerful and flexible, the .NET Reactor licensing features allow you to enforce your license conditions and protect your revenue stream by using hardware and software locks. The license manager can build trial or permanent licenses, in a matter of seconds. A fully documented software development kit (SDK), complete with examples, allows you to call the licensing system directly from your code, allowing you to create custom extensions to the licensing system.

抱歉，完全保护应用程序是不可能的。

这真的值得吗?只要有足够的决心，任何保护机制都可以被打破。考虑你的市场、产品价格、客户数量等。

如果您想要更可靠的东西，那么就使用硬件键，但这相当麻烦(对用户来说)，而且成本更高。软件解决方案可能会浪费时间和资源，它们唯一会给你的是一种虚假的“安全感”。

还有一些想法(没有一个是完美的，因为没有完美的人)。

AntiDuplicate 改变语言，使用Skype的作者使用的好技巧 许可证服务器

不要在这上面浪费太多时间，因为破解者在典型技术方面有很多经验，比你领先几步。除非你想使用大量的资源，可能会改变编程语言(做Skype的方式)。

Here's one idea: you could have a server hosted by your company that all instances of your software need to connect to. Simply having them connect and verify a registration key is not sufficient -- they'll just remove the check. In addition to the key check, you need to also have the server perform some vital task that the client can't perform itself, so it's impossible to remove. This of course would probably mean a lot of heavy processing on the part of your server, but it would make your software difficult to steal, and assuming you have a good key scheme (check ownership, etc), the keys will also be difficult to steal. This is probably more invasive than you want, since it will require your users to be connected to the internet to use your software.