Everyone knows. net gets the IL intermediate code after compilation, but using ILDASM can easily decompile it into a text file, which is easy to understand, you can also use ILASM to re-compile it into an EXE file.
How to solve this problem is a concern of many. net fans.
There are different solutions for different occasions:
1. webservice or remote call
Place core code and data on your server
2. Jeffrey Richter said: if there is a very decisive Code, you can consider using Native Code DLL + Interop, if you think Native Code is 100% secure.
3. Adding a signature to the program means adding your digital certificate to the Assembly. In this way, when the. Net application is loaded, its security system will check the signature. This signature ensures that your code is not modified. If the changed code is not executed
It ensures that "this program must have been developed by a certain company and has not been tampered with", but it cannot be ensured that the program is secure. Whether you accept the program depends on your trust in the company.
You cannot implement the security you need. You can copy it.
4. Use a obfuscator to convert the original code into a pile of long characters without any meaning, which is hard to understand.
Like java, a string of ooo0o0o00o0o, ^ _ ^
5. You can add an encryption method yourself.
This has not been tried
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