Question - how to hide some data after build

andrei hooba

Hello,

How can i hide some data after i build a project?
For example i build my project, but if i open it (the .exe file) with an hex editor i can see some informations.. and i don't want other to see it.
How can i hide or crypt or anything else?
ty

6 Replies

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Kirtan Patel14y ago
use obfuscator Software that comes with Visual Studio to protect codes like this.
andrei hooba14y ago
thank you all, but there are many other functions that i want to hide/protect it....

Sam Hobbs14y ago

What is the result of converting to base 64? I assume that would not be recognizable. The following is a sample showing conversion of a string to base 64 and conversion back to a string.

byte [] bain = Encoding .ASCII.GetBytes("5815643272644" );

long  al = (long )((4.0d / 3.0d) * bain.Length);

if  (al % 4 != 0)

al += 4 - al % 4;

char [] base64CharArray = new  char [al];

System.Convert .ToBase64CharArray(bain, 0, bain.Length, base64CharArray, 0);

Console .WriteLine(base64CharArray);

byte [] baout = System.Convert .FromBase64CharArray(base64CharArray, 0, (int )al);

Console .WriteLine(Encoding .ASCII.GetString(baout));

Roy S14y ago
Does this give the required result?
if (user2 == Encoding.ASCII.GetString(new byte[] { 53, 56, 49, 53, 54, 52, 51, 50, 55, 50, 54, 52, 52 }))
{
Console.Write("Checking license .... OK");
}

I've just converted the constant "5815643272644" into bytes and used Encoding.ASCII.GetString to convert it to a string.
andrei hooba14y ago
Roy S14y ago
With a hex editor you say... It's actually worse than that, you can extract your entire sourcecode with a tool like reflector or ILSpy.

I've heard about obfuscators that can change the code a bit to make it less readable for those decompilers.

But it probably won't do any good against hex editors... If you have a string that you want to hide, you could write some code that takes a constant array of data and forms it into the string you need.

What kind of information do you want to hide?