如何使用 C# 检查文件哈希值是否已更改

Question

I am a game devoloper, When i release a new games, BOOM!!!, That game will be modded, and i am running online games, Soo it's huge lose for me, I am making games with Unity, Hope u guys can understand me, I want to add HashCheck to the games main file, Like "If file hash changed, Game,close"

Like :- I have Assembly-CSharp.dll as my main game data file, So if Modders want to mod my games, They Will just load Assembly-CSharp.dll into some decompiler and Edit the file

I have also tried "HEX" Protection, But they Bypasses it

So, I want to make, When Modders change Assembly-CSharp.dll the hash will be changed, If Hash chnaged "Application.quit"

I am just trying to compare MD5 hash

But i am not getting, Even sample code anyware

I just need code to add HashCheck in Assembly-CSharp.dll

Mean I need C# code

Answer 1

Sounds like strong-name assembly-signing might help you.

Amongst others, one benefit of strong-naming your assemblies is that they are signed with a digital signature , which protects the assembly from being tampered with . If someone is to modify your assembly, the verification process which automatically occurs during assembly load will fail and throw an exception.

Strong names provide a strong integrity check [...] [, guaranteeing] that the contents of the assembly have not been changed since it was build.

_{Taken from docs.microsoft .}

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Read more about how to use strong-naming here .

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EDIT

As toATwork has mentioned, strong-naming will not be of benefit here. Strong-naming insures your users that your assembly really comes from you and was not modified by others.

Users that want to modify your assembly will not be discouraged from tampering with your assembly!

Since hash checks can easily be bypassed as well, what I recommend is to use obfuscation in combination with tamper checks . You could use Dotfuscator, which is already included in Visual Studio .