Identify a cd-rom (is there a SID in a cd ?)

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April 25th, 2006, 04:16 AM
FireJocker

Identify a cd-rom (is there a SID in a cd ?)

Hi,

I need to create an application which will be writted on many CD-ROM (10.000 cd), each cd is same as other, there isn't any possibility to write a different file on each cd,

But I need to authenticate each cd without needing a manual entry (serial number...) by user.

So, I'm looking if it exist a SID on each CD, like the MAC address for network card and how getting it in C++.

Thanks all.
April 25th, 2006, 04:45 AM
philkr

Re: Identify a cd-rom (is there a SID in a cd ?)

Check out the fourth parameter: GetVolumeInformation()
April 25th, 2006, 04:59 AM
FireJocker

Re: Identify a cd-rom (is there a SID in a cd ?)

and it will be enought ?

each number got on each cd will be different ?
April 25th, 2006, 06:34 AM
philkr

Re: Identify a cd-rom (is there a SID in a cd ?)

I can only guess. The best thing would be to burn two exactly identical CDs and try it.
April 25th, 2006, 06:36 AM
FireJocker

Re: Identify a cd-rom (is there a SID in a cd ?)

Yes, I'll do that to check,

thanks.
April 27th, 2006, 07:00 AM
FireJocker

Re: Identify a cd-rom (is there a SID in a cd ?)

How getting the drive where is running the .exe ?

thx
April 27th, 2006, 09:23 AM
philkr

Re: Identify a cd-rom (is there a SID in a cd ?)

You can use GetDriveType() to check every drive letter until you get a CD-drive.
April 27th, 2006, 10:01 AM
FireJocker

Re: Identify a cd-rom (is there a SID in a cd ?)

I got it

Code:

if(::GetCurrentDirectory(sizeof(szDir) - 1, szDir)){ driver = szDir; p = driver.Find("\\"); driver = driver.Left(p+1); driver.MakeUpper(); bSuccess= GetVolumeInformation( driver, szVolName,MAX_PATH, &dwVolSerialNumber, &dwMaxNameLength, &dwFileSystemFlags, szSystemName,MAX_PATH); }

:ehh: But are you sure this number is really single ?

it's composed of 10 numerics digits so it allow 10.000.000.000 - 1 possibilities, I thinks it's a little bit small for all of us seeing each CD are burnst each days
April 27th, 2006, 12:51 PM
philkr

Re: Identify a cd-rom (is there a SID in a cd ?)

The number is DWORD which is 32 bit = 4 byte = 4.294.967.296 different values possible.
But besides this I can not guarantee anything, because I am no serial number specialist. Hopefully you will find one.

EDIT: The question is not if there exists a CD with the same serial number anywhere on the world, but if it is possible for a person without much effort to create a CD with an arbitrary serial and if he can also get to know what number he has to use.