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My first attempt at creating a "copy protection"
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JaguarGod
Senior Member
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10. March 2006 @ 11:42 |
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I was screwing around with American Wedding and I thought it would be fun to try and corrupt the DVD in a similar fashion to ARccOS and Ripguard. I edited the DVD and removed everything I did not want and then I created a new set of IFOs for it. I then created a Dummy VOB and added a bunch of garbage into it. After this, I screwed around with the DVD Commands to skip the dummy, but keep it referenced. Here are my results using screenshots:
AnyDVD info screen:
DVDD Log:
CloneDVD2 error with AnyDVD running:
There are no unreadable sectors because I have no idea how to create them or burn them, but the first time that I created an image it showed "found and removed 1 bad sector protection".
After burning the image to a DVDRW, DVD Shrink and Nero Recode failed to open the disc and Windows was unable to browse it. However, DVD Decrypter was still able to parse the files, so the disc is rippable.
I was not pleased with these results though, because if I were to burn a disc on DVD9 it would be pretty hard to compress because DVD Shrink, Nero Recode and CloneDVD2 all had problems and the IFOs are only accessble after being ripped by Decrypter. I decided to step down the corruption a bit and corrected VIDEO_TS.IFO and changed the the IFO table in VTS_02_0.IFO (the corrupted VTS). Now the DVD is rippable by DVD Shrink, but still not with CloneDVD2 or Nero Recode, but I think that this is acceptable. However, the DVD is still not accessible by Windows. Also, I added an autorun so that Windows rejects the DVD. However, the DVD had perfect playback on a DVD player, even when I forced the corruption to play.
I am only doing this to pass some time as I have been pretty bored lately, so please do not start bashing me for trying to create a "copy protection" scheme.
This message has been edited since posting. Last time this message was edited on 10. March 2006 @ 11:44
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AfterDawn Addict
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10. March 2006 @ 12:01 |
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At least you created an "unusuable" DVD......
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JaguarGod
Senior Member
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10. March 2006 @ 13:14 |
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Well, it isn't completely unusable...
It plays perfectly on a standalone DVD player and it can be ripped with DVD Decrypter and DVD Shrink. Here is what it does prevent from copying though:
AnyDVD + CloneDVD2
AnyDVD + Nero Recode
AnyDVD + VobBlanker
DVDFab Platinum
Windows Browser Drag and Drop
Nero copy disc
Does not Stop:
AnyDVD alone
DVD Decrypter (all modes)
DVD Shrink (Open Disc)
So basically, it does prevent casual copying and some copying with actual DVD Copying software.
I will try to improve on it later on and see if I can get better results. Maybe I can find something about creating and burning CRC errors... Then I can make my own variant ARccOS or Ripguard... That would be something if I can replicate that expensive copy control scheme using freeware!!
Also, I changed the DVD Region to region 1, 7, & 8....This way it would only work in the US or on airplanes:P
This message has been edited since posting. Last time this message was edited on 10. March 2006 @ 13:16
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DVDsLover
Newbie
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10. March 2006 @ 13:19 |
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Very interesting idea you have there. Keep up the good work. Try to use DVD-RW to test it, so you won't be wasting money ruining every DVD-R you have =)
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Moderator
1 product review
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10. March 2006 @ 13:36 |
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I hope we will never be faced with circumventing you copy protection...LOL
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AfterDawn Addict
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10. March 2006 @ 14:36 |
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My crystal ball shows a job with Sony in your future, lol :)
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Senior Member
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10. March 2006 @ 14:47 |
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@JaguarGod
Are you trying to get into trouble here at AD by inventing a 'copy protection system'? It's like... You against 10k people! o/j!
Interesting to say the least... Might have a go myself... LOL
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AfterDawn Addict
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10. March 2006 @ 14:50 |
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He just wants to make more work for slysoft.
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Senior Member
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10. March 2006 @ 14:54 |
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LOL
Well... For now, the mighty CloneDVD can't crack it!!
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Member
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10. March 2006 @ 15:54 |
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The Dude needs a woman bad!!
New build with goodies
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AfterDawn Addict
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10. March 2006 @ 16:05 |
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Why create an encryption on your backups when you can just use memosux cmags/burn them as fast as you can/multi-task/make sure your hard drive is heavily fragmented and slap on a sticker label on them.
Good Luck on getting any program to get through all those crc errors, LOL
I'm bored as well!
HP a1118x-b/athlon 64-3300+/BenQ 1650 BCDC/LG 8163B/Modded Wii/Epson-R300 and Ty Watershields!!! |
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JaguarGod
Senior Member
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10. March 2006 @ 16:17 |
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It would only take an update to correct the problem, but Slysoft or Elby, would have to change the way the CloneDVD opens DVDs. That is the only reason I can think of that CloneDVD cannot access the DVD...
I will try for a new variant when I back up my next movie DVD. For now I am going to do some box sets and those take so long for me to back up, that it will keep me busy for at least 4 more days so I will not bother corrupting those. Hopefully I can get an update on the the corruption next week.
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Member
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11. March 2006 @ 09:35 |
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@jaguarGod
The movie industries gona make You rich. i see the contract is comin. lol
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DVDsLover
Newbie
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11. March 2006 @ 16:24 |
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It would be nice to create a copy protection. I would like to have my own DVDs with a copy protection of my own, hehe. Keep it up, and teach us later ;)
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b18bek9
Member
1 product review
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11. March 2006 @ 17:00 |
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i think its nice to see people interested in copy protection because one who created the mess can always undo it so dont talk down on people when they are doing like many tryin to figure new ways of protection and reverse engineering.........
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Senior Member
1 product review
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11. March 2006 @ 17:15 |
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hi,
Ok the most simple but advanced way is to put minor scratch es ont the discs so the Stand Alone DVD player will go over it but your DVD drivs will have a hell of a time copying.
It's a physical protection.
j
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movies27
Senior Member
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12. March 2006 @ 15:18 |
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Saugmon...lmao!!!..you are so right....i've ran into so many read errors with those discs.
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AfterDawn Addict
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12. March 2006 @ 15:37 |
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To add to my first post, burn those memosux cmags using an HP writer and good luck to re-ripping those backups!!
Cmags+HP writers= Crc errors out of the wazu!
LOL
HP a1118x-b/athlon 64-3300+/BenQ 1650 BCDC/LG 8163B/Modded Wii/Epson-R300 and Ty Watershields!!!
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JaguarGod
Senior Member
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12. March 2006 @ 22:43 |
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@BurningAs
The scratch trick would be very good indeed, but it would be very hard to do this accurately. I would imagine, that I could burn like 1cm worth of garbage data and than scratch 1/2 of that. However, I would have to make sure that the extra data is not played!!!
@saugmon
Those CMC Mags are definately tough to rip!!! I have seen some that are completely bad where nothing can read them at all!!! However, I have some CMG MAG F01 and I got a near flawless scan with them!!! I think I got a total of 1200 PI errors and 60 PO errors when scanned with DVDInfo Pro. However, I have yet to test those out on my picky DVD Players (that is what really counts!!). I bet that those scans do not mean much anymore. I got near flawless scans on some Sony DVD+R Made in Taiwan and those are not compatible with almost all of my players and the ones they do work on, they skip like crazy!!!
Currently I am using the CMC Mags on experimental backups (ones with applied corruption). Even though I do have DVDRWs, they are Fuji Made in Japan (Ricoh) and those are better than some of my DVD+Rs!!
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Jigen
Senior Member
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13. March 2006 @ 08:05 |
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Why exactly is this "advanced"? I recently backed up a copy of Bandits that had become stuck in a player and forceably yanked free after being ground up like hamburger. This disc was wasted, and no standalone I tried would do anything but report no disc. Popped it in the ole NEC, fired up decrypter, wham bam perfect rip. Copy works pefectly.
Quote:
Ok the most simple but advanced way is to put minor scratch es ont the discs so the Stand Alone DVD player will go over it but your DVD drivs will have a hell of a time copying.
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JaguarGod
Senior Member
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13. March 2006 @ 11:08 |
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I was wondering, would forcing my burner to burn CRC errors put it in any risk?? I have an idea on creating simulated CRC errors on an ISO and then this should cause burn errors, but still produce a 100% workable DVD. If there is any risk, I will test it out when one of those MadDog burners go on sale for $10...
@Jigen,
Scratching a disc is not full-proof, but if done correctly, it will stop DVD Drives. Why??? Because a PC will try to copy all data on the disc and a DVD player will only read what it is told to read. This is how ARccOS and Ripguard work, they are psuedo physical protection schemes, which are applied through data corruption.
Scratching a part with important Data may slow down a drive, but you do this at the risk of sacrificing playback on a standalone. The best way to apply a scratch is by adding garbage data to a disc and then destroying this portion by either putting several holes through the disc or scratching very deeply this portion. This will prevent casual copying of a DVD (making a disc image), but not more advanced copying like using DVD Decrypter in either File or IFO Mode. If you add a structure corruption to this, it will also effectively stop drag and drop copying.
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Jigen
Senior Member
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13. March 2006 @ 11:41 |
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Like I said above, the DVD in question was basically destroyed. I'd say 85% of the disc was scratched all to hell, yet my drive ripped it. There were read errors to be sure, but given some time everything was copied perfectly.
I won't guarantee that I could do that with any disc similarly damaged, but it was far beyond anything that a standalone could hope to deal with. Simply scratching a disc in a way that a standalone would "go over" without any problem certainly won't stop me.
I am very interested in your experiments though. Interesting reading.
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AfterDawn Addict
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13. March 2006 @ 13:03 |
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@Jag...... all your idle time work is for not! When they finally upgrade to HD-DVD or Blu-ray you won't need any copy protection except a KEY to make the disc work in a player! manufacturer KEYS are what you'll need! but I sure hope that someone will be able to break it! soooooo stop fooling around and get to work with the HD stuff!!!! hahahahahahaha
@johnnyD... loved your comment.... the dude needs a woman bad!!! hahahahaha
@Saugmon.... how did you know I started out with an HP burner and Memosux!! you have a crystal ball or something? ohhhhhh swaaaaaamie!
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AfterDawn Addict
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13. March 2006 @ 13:09 |
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MY COPY PROTECTION,
and it works...
and this works toooooooooo....
cheers
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AfterDawn Addict
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13. March 2006 @ 13:21 |
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can I hire YOU Ireland? HAPPY PATTIES DAY to ya!!!!!
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