File Access

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Hi
how can I create access for my file formats (like .xyz) so only my application can open it .

I do not want use Encrypt .

regards

[Removed non-sense shouting]

Posted 28-Jul-10 0:33am

Fullmm

Updated 28-Jul-10 3:51am

Toli Cuturicu

v2

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**R. Giskard Reventlov** · Answer 1 · 2010-07-28T00:46:00

Solution 1

As far as I am aware you can't do that (if I have correctly understood your question): any file can be opened by, for instance, a text editor or the like. The only way to secure the content of the file would be to encrypt or obfuscate that content in some fashion.

Posted 28-Jul-10 0:46am

R. Giskard Reventlov

OriginalGriff · Answer 2 · 2010-07-28T00:50:00

Solution 2

You can't.
I will always be able to open the file with a hex editor at the very least.
Encrypt it ("The Sensible Method"). Use a hard-to-understand file format ("The Corel Method"). Change the format every other week ("The Microsoft Method").
But don't expect any of these to be completely unbreakable - people can still look at your code and reverse engineer the data from that.

Posted 28-Jul-10 0:50am

OriginalGriff

Comments

Fullmm 28-Jul-10 6:54am

people can still look at your code and reverse engineer the data from that :

yes , that is why I do not want encryption . Also I use C# , so codes can be easily read .

William Winner · Answer 3 · 2010-07-28T06:39:00

you said:

Fullmm wrote:
people can still look at your code and reverse engineer the data from that :

yes , that is why I do not want encryption . Also I use C# , so codes can be easily read

Well, the majority of people won't have a clue how to do that. But the majority of people know how to open a file in a TextEditor.

There is no foolproof way to secure a file. The only thing that you can do is to make it as hard as possible so the fewest number of people can mess with it.

Personally, I have an application with an Access backend and for the majority of users, just changing the extension makes it so that they don't know how to open it and I leave it at that.

If I wanted it more secure, I would encrpyt it.