Hide function Names in COM

[shaikh_intekhab]

Hi,
I want to hide my COM components function names. This is a licensing component. Andbody can see the function name BOOL CheckLicense().
Generate their fake component and use it.
Can i hide this name so no one can go to OLE Viewer and See the Names of functions.
Only my modules should access them.
My Modules know the names because it is built by us.
Any Help???


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[NMTop40]

BOOL CheckLicense isn't actually a COM interface (they always return HRESULT) but we'll assume it's an illustration.

If you make your licence granter a separate COM component then yes, it will be easy for anyone go create a component using the same GUID and make that result always return TRUE.

But why not make that component return a "secret" number or something else like that that is known only to your own software? Your software can also determine when the licence expires (if it does).

By a number, I mean something likely to be 16-bytes long which is encrypted in some way known only to your own software. The chances of someone else producing a valid licence is therefore far more unlikely.



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[shaikh_intekhab]

Thanks a lot.
We had that in mind. but i was thinking what
that hidden in idl stands for.

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[Graham]

I don't have my books with me, so I can't check the details, but COM has a mechanism for licenced components - why can't you use that?

He who breaks a thing to find out what it is, has left the path of wisdom - Gandalf

[shaikh_intekhab]

You are right. But the license is on the use of it. Anyone can make a fake component and a fake function and use their fake component. SO the solution is to Encrypt the o/p of the license validator function.
I will dfinately see into how the license works
with the component itself.


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