[Bug 7065] Get SecuROM copy-protection working

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=7065





--- Comment #77 from Rob Whalley <mail at robwhalley.co.uk>  2008-04-05 17:38:21 ---
Just for reference, there is an interesting post on how older versions (4.8) of
Securom work here:

http://forum.alcohol-software.com/index.php?act=ST&f=32&t=1395

Although indirectly related, methods people have used to allow backup copies to
be made seem to have revolved around reading the structural information of the
disc using Data Positioning Measurement. The copy protection checks for the
delays in reading the disc caused by the deliberate changes made to its
structure during manufacture.

I also found this interesting:
http://www.wipo.int/pctdb/en/wo.jsp?wo=2007026297&IA=WO2007026297&DISPLAY=STATUS
.. a patent application entitled "Method of Storing Rotating Media Data in
Image File", which demonstrates an approach to storing the information about a
disc in a Media Descriptor File. In particular, this diagram:
http://www.wipo.int/pctdb/images/PCT-IMAGES/08032007/IB2006052961_08032007_gz_en.x4-b.jpg

Obviously, this doesn't help fix any Securom problems you might be having, but
if (like me) you had no idea how the copy protection works, then it is
educational.


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