MKB V4 and BD+ - Page 5

deets · 28th October 2007, 19:49

ironically, im now far more likely to invest in an HD DVD player because of this fact!

Wombler · 28th October 2007, 21:22

Quote:

Originally Posted by markrb

According to Slysoft they Have broken MKB4.

http://forum.slysoft.com/showthread.php?t=8982

We have broken MKBv4. Please be so kind to submit AnyDVD_Info ... files for all BD or HD DVD discs where AnyDVD HD issues an AACS error.

YEAH for the good guys. Now onto BD+

Mark

That's only for certain discs.

Hence the request for details of discs that AnyDVD can't cope with.

If you read the updates they state that full support will be included in a future release.

Wombler

bcrabl · 28th October 2007, 22:00

Quote:

Originally Posted by Wombler

That's only for certain discs.

Hence the request for details of discs that AnyDVD can't cope with.

If you read the updates they state that full support will be included in a future release.

Wombler

Can somebody with AACS knowledge tell us what this means. They gather some info from the disk but they are not oracles...

arctor · 28th October 2007, 22:47

This is good. I wonder if anybody has been able to look at the a decrypted disk that has BD+. I rekaise that it shouldn't be playable but would like to know if raw video/audio files have been changed (one expects them to be altered somewhat ready for the BD+ Program to change them back during playback.)

bcrabl · 28th October 2007, 23:25

Quote:

No, this means that all non BD+ titles, where people have posted AnyDVD_Info files, are working.
(Here is your personal cracking service speaking )
BD+ discs will now be AACS decrypted, too, so everyone who want to take a look how BD+ works can do so now (greetings to Arnezami & Co.)

thats what james said.

Galileo2000 · 29th October 2007, 05:16

Essentially SlySoft managed to crack mkb v4 and they are going to break BD+ once and for all pretty soon.

According to them BD+ is nothing more than security by obscurity.

As far as I understand, once they break one BD+ they are able to break all of them.

Good time for all on the Fair Use side.

Bad time for all the account reps who spent millions of $$$ on the "good-for-nothing" schemes.

markrb · 29th October 2007, 11:17

Quote:

Originally Posted by Wombler

That's only for certain discs.

Hence the request for details of discs that AnyDVD can't cope with.

If you read the updates they state that full support will be included in a future release.

Wombler

Look at their forum. There is a section for people having problems with the latest version. Not a single reply for HD-DVD. I would say it was definately cracked. Just like before they will need to update for individual discs on occasion, but that has been the case for awhile now.

Mark

Wombler · 29th October 2007, 11:46

Quote:

Originally Posted by markrb

Look at their forum. There is a section for people having problems with the latest version. Not a single reply for HD-DVD. I would say it was definately cracked. Just like before they will need to update for individual discs on occasion, but that has been the case for awhile now.

Mark

I believe they're very very close to fully breaking it but according to SlySoft's list of updates they themselves reckon they're not quite there yet.

The latest version released only yesterday (6.1.9.3) still says that they've added support for "some popular MKBv4 discs" but it also states "Note: Support for all MKBv4 discs will be added in a future release"

I'd assume SlySoft know where they're at.

Wombler

KenD00 · 29th October 2007, 16:20

To give all that speculation about what SylSoft can do with MKBv4 and can't a more technical note i add the following: i think currently they are in the BackupHDDVD era, they know how to get the VUK from a title (hence the request for the info files) and are moving on to the aacskeys era (finding a processing key, maybe device keys).

Turtleggjp · 29th October 2007, 17:02

If they are in the BackupHDDVD era, then wouldn't they need an entire disc for a player to play, and not just the MKB info from a disc? Sounds to me like they have a processing key (and host private key) so they can get the VUK using only the MKB from a disc.

gioowe · 29th October 2007, 21:27

According to James from SlySoft (http://forum.slysoft.com/showpost.ph...2&postcount=26) they have a processing key for MKBv4. They just don't want to leak it by releasíng a software that contains it.

Thunderbolt8 · 29th October 2007, 21:38

"We already found a way to crack BD+ and we have just turned to fine-tuning. I should really think about hiring a bodyguard now, since this product won't please everybody."

http://www.cdrinfo.com/Sections/News...x?NewsId=21709

SamuriHL · 29th October 2007, 22:23

Gotta hand it to those Slysoft boys and girls....they sure do know their stuff.

vio_man · 29th October 2007, 23:43

Also James said that they've really cracked MKB v4 but right now only titles with submitted logs are working, because they need to integrate their "universal" MKB v4 decrypter into AnyDVD HD. Once they integrate it all titles will be decrypted. And as many of you said, BD+ will be cracked shortly, James said probably by the end of the year.

bcrabl · 29th October 2007, 23:46

http://forum.slysoft.com/showpost.ph...8&postcount=11

They've gone Oracle.

SamuriHL · 30th October 2007, 00:33

Quote:

Originally Posted by vio_man

Also James said that they've really cracked MKB v4 but right now only titles with submitted logs are working, because they need to integrate their "universal" MKB v4 decrypter into AnyDVD HD. Once they integrate it all titles will be decrypted. And as many of you said, BD+ will be cracked shortly, James said probably by the end of the year.

That's not exactly what they said. They said they are going to allow AnyDVD HD to communicate with their server for any new titles that it doesn't have keys for and will discover the key from the information sent to the Slysoft server, and send back a key for that title. The MKBv4 cracking code will not be integrated into AnyDVD HD directly. Each new version will come with an upgrade list of titles that it can decrypt. However, as I said, when a new one is encountered it'll be decrypted for you by the server.

vio_man · 30th October 2007, 00:38

You're right. I misunderstood.

JeffAlso · 30th October 2007, 01:26

This brings up an interesting question - if the Device/Processing keys used aren't incorporated into the client software itself, is there any reason to believe that they were originally extracted from a software player?

It would make more sense to extract the keys from a hardware player, which is much less likely to have it's keys revoked by AACS LA. They would have to read the Key Conversion Data from the lead-in, presumably using a XBox drive or other modified hardware in order to get the Volume Unique Keys for the individual disks. This may explain why this one took a little longer than previous MKBs.

If this is the case, then not only does it become more difficult for AACS LA to identify the leaked key, but when they do they have to face the problem of potentially revoking the keys in ten of thousands of hardware players.

tjf · 30th October 2007, 08:04

Quote:

Originally Posted by JeffAlso

It would make more sense to extract the keys from a hardware player, which is much less likely to have it's keys revoked by AACS LA. They would have to read the Key Conversion Data from the lead-in, presumably using a XBox drive or other modified hardware in order to get the Volume Unique Keys for the individual disks. This may explain why this one took a little longer than previous MKBs.

Remember, they now plan to use the oracle approach. It is supposed to work for all the new MKB 4 discs. So they cannot use standalone keys, because AnyDVD HD cannot read KCD and send it to the oracle. What you are saying is that they would have to buy all the MKB 4 discs and read the KCD from them and feed the oracle, which is not realistic.

The question is if the new oracle approach will force AACS LA to use sequence keys to find out which software player was compromised. My opinion is that they do not care, they revoke all three of them anyway, but will the software vendors try to obfuscate the keys more if they are not sure it was their application that was hacked?

bcrabl · 30th October 2007, 09:21

Thet went oracle because they don't want open source community to crack anydvd and find the device/proseccing keys. That is the only reason. The AACS LA will just revoce all the keys for software players next december.

30th October 2007, 01:26	#98 \| Link
JeffAlso Registered User Join Date: Dec 2006 Posts: 47	This brings up an interesting question - if the Device/Processing keys used aren't incorporated into the client software itself, is there any reason to believe that they were originally extracted from a software player? It would make more sense to extract the keys from a hardware player, which is much less likely to have it's keys revoked by AACS LA. They would have to read the Key Conversion Data from the lead-in, presumably using a XBox drive or other modified hardware in order to get the Volume Unique Keys for the individual disks. This may explain why this one took a little longer than previous MKBs. If this is the case, then not only does it become more difficult for AACS LA to identify the leaked key, but when they do they have to face the problem of potentially revoking the keys in ten of thousands of hardware players. Last edited by JeffAlso; 30th October 2007 at 01:35.

28th October 2007, 19:49	#81 \| Link
deets Registered User Join Date: Jan 2005 Location: london, england Posts: 509	ironically, im now far more likely to invest in an HD DVD player because of this fact!

28th October 2007, 22:47	#84 \| Link
arctor Registered User Join Date: Jan 2007 Posts: 7	This is good. I wonder if anybody has been able to look at the a decrypted disk that has BD+. I rekaise that it shouldn't be playable but would like to know if raw video/audio files have been changed (one expects them to be altered somewhat ready for the BD+ Program to change them back during playback.)

29th October 2007, 05:16	#86 \| Link
Galileo2000 Registered User Join Date: Jan 2007 Posts: 224	Essentially SlySoft managed to crack mkb v4 and they are going to break BD+ once and for all pretty soon. According to them BD+ is nothing more than security by obscurity. As far as I understand, once they break one BD+ they are able to break all of them. Good time for all on the Fair Use side. Bad time for all the account reps who spent millions of $$$ on the "good-for-nothing" schemes.

29th October 2007, 16:20	#89 \| Link
KenD00 Registered User Join Date: Jan 2007 Location: Internet Posts: 378	To give all that speculation about what SylSoft can do with MKBv4 and can't a more technical note i add the following: i think currently they are in the BackupHDDVD era, they know how to get the VUK from a title (hence the request for the info files) and are moving on to the aacskeys era (finding a processing key, maybe device keys).

29th October 2007, 17:02	#90 \| Link
Turtleggjp Registered User Join Date: Apr 2006 Posts: 225	If they are in the BackupHDDVD era, then wouldn't they need an entire disc for a player to play, and not just the MKB info from a disc? Sounds to me like they have a processing key (and host private key) so they can get the VUK using only the MKB from a disc.

29th October 2007, 21:27	#91 \| Link
gioowe Registered User Join Date: Jun 2007 Posts: 95	According to James from SlySoft (http://forum.slysoft.com/showpost.ph...2&postcount=26) they have a processing key for MKBv4. They just don't want to leak it by releasíng a software that contains it.

29th October 2007, 21:38	#92 \| Link
Thunderbolt8 Registered User Join Date: Sep 2006 Posts: 2,197	"We already found a way to crack BD+ and we have just turned to fine-tuning. I should really think about hiring a bodyguard now, since this product won't please everybody." http://www.cdrinfo.com/Sections/News...x?NewsId=21709

29th October 2007, 22:23	#93 \| Link
SamuriHL Registered User Join Date: May 2004 Posts: 5,351	Gotta hand it to those Slysoft boys and girls....they sure do know their stuff.

29th October 2007, 23:43	#94 \| Link
vio_man Registered User Join Date: Apr 2003 Location: Portugal Posts: 86	Also James said that they've really cracked MKB v4 but right now only titles with submitted logs are working, because they need to integrate their "universal" MKB v4 decrypter into AnyDVD HD. Once they integrate it all titles will be decrypted. And as many of you said, BD+ will be cracked shortly, James said probably by the end of the year.

29th October 2007, 23:46	#95 \| Link
bcrabl Registered User Join Date: Feb 2007 Posts: 49	http://forum.slysoft.com/showpost.ph...8&postcount=11 They've gone Oracle.

30th October 2007, 00:38	#97 \| Link
vio_man Registered User Join Date: Apr 2003 Location: Portugal Posts: 86	You're right. I misunderstood.

30th October 2007, 09:21	#100 \| Link
bcrabl Registered User Join Date: Feb 2007 Posts: 49	Thet went oracle because they don't want open source community to crack anydvd and find the device/proseccing keys. That is the only reason. The AACS LA will just revoce all the keys for software players next december.