decrypting Hard disk files

[dvdgrrl]

OK, I have searched for this but have not found my situation. When I first got a dvd drive in my computer, I thought I could back up my dvds. Being completely ignorant, I simply copied all the files from my dvd to my hard drive. Later as I learned that these need to be decrypted first, I meant to go back and do that for the ones that I just copied. Did not get around to 2 of them and of course these are the 2 that have been ruined (don't ask, not a pretty story).

My question is: Can these un-decrypted files on my hard drive be decrypted?? I tried the following: made a iso of the files and burned them onto a dvd-rw. When I run decrypter on this disk-it says there is no copy protection to decrypt. The files do not run as is so they are still encrypted.

Is there any way to decrypt these files or am I just out of luck?

Many thanks in advance. I have been learning a great deal from these forums and appreciate everyone's help.

[r6d2]

Is there any way to decrypt these files or am I just out of luck?
I have not tried it, but I think there is. Did you try DVD Decrypter? You will need both the IFO and the VOBs. If you have the ISO you may patch it to make believe that it is encrypted, then it should be able to get the files. If you don't have the keys try brute force.
Again, I have not tried it, but hope this helps.
Regards,

[KpeX]

I haven't tried it either...but hmm.....a few suggestions...

First off, when you say "the files don't run", how are you attempting to open them?

Secondly, creating an image of the dvd is probably the way to go, but try Daemon Tools available from the doom9 software page or another program that can mount a virtual drive image. This should save you some dvd-r's in attempting to recover the files. Good luck and thanx for doing some reading first ;).

[dvdgrrl]

Thanks for the quick replies.

I do use DVD Decrypt; it does not decrypt HD files directly(at least not that I can tell) . When I made the ISO and then burned to a DVD-RW and then ran DVD Decryp on the DVD-RW there was NO CSS according to Decryp; when I say the files still do not run, they are still scrambled just like they are on the HD-the ones on the DVD-RW from the ISO are just as un-usable as the ones on the HD. Can't run them with WinDVD, Power DVD or any set top player.

I am not sure what the comment about "patching the ISO to make believe it is encrypted." When DVD Decrypt sees the files on the DVD-RW made from the ISO it sees nothing to decrypt; using brute force or not.

I do not see an answer to my problem yet but appreciate the dialog. thanks!

[r6d2]

Originally posted by dvdgrrl
I do use DVD Decrypt; it does not decrypt HD files directly(at least not that I can tell) .

Again, I have not tried this, but when you rip in the different modes with DVD Decrypter you may or may not remove the protections selecting the apropriate options. This is so in order to be able to make sort of "exact masters". Then when you rip from the disk, you may again select the options to decrypt and leave the files "open".

I am not sure what the comment about "patching the ISO to make believe it is encrypted." When DVD Decrypt sees the files on the DVD-RW made from the ISO it sees nothing to decrypt; using brute force or not.

Somewhere the ISO is lacking the flags that specify the protection the files have. I read somewhere this can be patched, but I don't have the reference at hand. Sorry.

I do not see an answer to my problem yet but appreciate the dialog. thanks!
That's we are here for, right? To hang around and proving ourselves useless? :)

Sorry for not being more helpful, but I have a strong "basic instinct" on the logic behind the direction I am pointing you.

Regards,

[dani82]

i think the only way to decrypt the dvd files on you computer is to use the CSS key, and the only way to get the CSS key is from the dvd itself; i think you said that the dvd was ruin, so you're probably out of luck, unless you can find a friend that has the same dvd that you got.

don't ask for the CSS key here, you might get in trouble.

[dvdgrrl]

hey, I figured it out.
made an img of the backed up -encrpted files
2) mounted img file w/daemon
3) used dvd d on the mounte
drive-used setting 'force css present' -it decrypted the files just great!

PS-contrary to the last post, dvd d found the 'key' without the disk-just the backed up files.

Thaanks for the help and suggestions!

[r6d2]

Originally posted by dvdgrrl
hey, I figured it out.
made an img of the backed up -encrpted files
2) mounted img file w/daemon
3) used dvd d on the mounte
drive-used setting 'force css present' -it decrypted the files just great!

Thaanks for the help and suggestions!
Congrats! Well, what you did was "patch" the ISO. I did not know DVD Decrypter could do it by itself.

In this forum you just cannot pass by once without learning something.

Glad to have helped.

Regards,

[rockwell]

Originally posted by dvdgrrl
hey, I figured it out.
made an img of the backed up -encrpted files
2) mounted img file w/daemon
3) used dvd d on the mounte
drive-used setting 'force css present' -it decrypted the files just great!

PS-contrary to the last post, dvd d found the 'key' without the disk-just the backed up files.

Thaanks for the help and suggestions!

You could also have used Chopper XP from http://www.digital-miner.com.

[barnbaby]

dvdgrrl, (or anyone else)

When you say you made an "img" of DVD files that are on your hard drive, how did you go about doing that?

I have a DVD's files on my HD that have been ripped and decrypted using DVD Decrypter in file mode, and I want to run Decrypter in IFO mode on these files in preparation for encoding with DivX. I do not have access to the original DVD, and I do not see any way that DVD Decrypter can do this, as it only looks at my DVD player, and not my HD.

My understanding is that I may need to convert the DVD files on my HD into one ISO file, and then mount it with a DVD emulator (daemon tools) so that DVD Decrypter can see it, and then I can use Decrypter in IFO mode on this file; trouble is, I don't know how to do that. If I can convert them to an IMG file, that would work also, yes? But how do I do that?

Thanks for any and all help...

[KpeX]

You could use ImgTool, find it here: http://www.doom9.org/software2.htm#vobtools

[r6d2]

Originally posted by barnbaby
I do not have access to the original DVD.

Hi, barnbaby, and welcome to the forum.

One of the very first thing you must remember is not to ask help to encode movies you don't own.

I'll suppose you really own the ripped DVD and that by some means it was scratched and is useless now, but you still have it.

Second, if you already have the VOBs, you don't need to make an image to encode them. If you're using Gordian Knot, take a look at this guide. It shows how to use the ripped files from the HD.

http://www.doom9.org/index.html?/gknot-basics-divx5.htm

[barnbaby]

First, my thanks to R6D2 and KpeX.
Second, yes, I own the DVD, but it is at home. I carry a laptop with me to view movies while I travel. I use DVD Decrypter to put all the DVD files on my HD, and view the movie using PowerDVD.

I've recently begun using DivX or Xvid to scale them down so as to get more content on the HD (for those really long trips) plus to have as a back-up.

I had some time on my hands, so I tried to take the files of one of these movies and use DVD Decrypter to produce the files needed to encode them with DivX, but couldn't see a way to do it.

I will give your suggestions a try; thanks very much for the help, and I fully intend to get up to speed with this stuff. It is quite interesting, and I am quite impressed with all of the tools clever folks such as you have come up with. Forums such as these have been very useful, and have kept many, I am sure, from "re-inventing the wheel".
Until the next time...

"You are sure to get anywhere,
if you only walk long enough."
Lewis Carrol (1832-1898); English author.

Barnbaby

[2COOL]

Originally posted by dvdgrrl
Can these un-decrypted files on my hard drive be decrypted?? This is such a simple answer. Use SmartRipper 2.41. Just click on the folder icon top right of window and browse to your folder.