2013/9/16 Janusz Dziemidowicz <rrapt...@nails.eu.org>: > 2013/9/8 Jean-Baptiste Kempf <j...@videolan.org>: >> On 08 Sep, Janusz Dziemidowicz wrote : >>> - cache read data key in the same way as VUK, but the cache would have >>> to be named after the drive model (and in theory the same drive models >>> might have different keys so that can be not enough) >>> - extend disc entry in KEYDB.cfg to store it, probably with several >>> possible entries per disc (if one has several drives); unfortunately >>> there is no easy way to check if correct key was used, only checking >>> the video stream after all decryption layers are applied >>> Any thoughts on this? >> >> 1) but maybe with a different cache file. > > Obviously I did not mean VUK file, just the same mechanism;) > Unfortunately, I have no idea if the bus encryption keys are specific > for the drive model or if every unit has different ones. Firmware > version might also be affecting this (and in theory I believe the keys > could be generated randomly every time disc is inserted). Given that > I'd like to get some reports from people before trying to implement a > cache that will be broken. > > I've noticed that some of my work was merged, but not all. Is there > anything that I can help with? Clarify something or code anything > differently? > > While developing bus encryption support, I've noticed that I must make > a new AACS-Auth to retrieve the bus encryption keys (at least on LG > drives). I cannot retrieve them simply after retrieving VID. I was > unable to find any information in AACS specification that clarifies > this. I've noticed that there might be the same problem with existing > code to retrieve PMSN. I've finally took some time to check my discs > and found one with PMSN. Indeed, PMSN also requires a separate > AACS-Auth to be retrieved, current code will simply not work. This was > tested on two LG drives (one fairly recent while the other one is > quite old, even without bus encryption). The fix is rather obvious and > can be found at https://github.com/rraptorr/libaacs/compare/pmsn
Any updates on this? I was kinda hoping to get it merged. Is there anything I can do to help? -- Janusz Dziemidowicz _______________________________________________ libaacs-devel mailing list libaacs-devel@videolan.org https://mailman.videolan.org/listinfo/libaacs-devel
