Brute force cracking failed

[Amerzone]

I was ripping Tomb Raider R2 the other day and I got an error message from DVDDec 3.2.2.0 that I came across for the very first time.

Brute force cracking failed in vts_03_0.vob (same happens with vts_06_0.vob and vts_07_0.vob). The algorithms failed.

It then asked me if I would like to use the same key from another file in the same vts, and as suggested in the thread http://forum.doom9.org/showthread.php?s=&threadid=67715 I answered yes and proceeded well. In fact, this dvd uses 9 different keys, this is something rather peculiar, isn't it? In the settings, I/O key exchange -> brute force is ticked.

Could someone please explain what this message means?

[LIGHTNING UK!]

The _0.VOB files often fail because they're too small and the brute force code cant figure out a code.

That's why the program then checks other files in the same VTS set.

Did it then not find a key?

Why dont you just post up the FULL log from when you start the program to when the disc has finished decrypting - all be it unsuccessfully.

[Amerzone]

Thanks for your prompt reply and the explanation. DVDDec proceeded to the next file in the same VTS set and it did find a key, so the rip was successful. I asked, because this was the first time I got this warning and I was curious to know what was about.