Hi all, Quick story: - are there any knows issues with plain dm-crypt volumes in Debian ? (Other than the default changing from aes-cbc-plain to aes-cbc-essiv ?) - anyone here tried bruteforcing aes-cbc-plain (I got a rather short key) ? (Could you please CC me in the replies to this thread as I am not (yet ?) a subscriber of this mailing list). Long story: I recently came back from a one year trip abroad, and got my hands back on an encrypted hard drive I left there. I was pretty sure I knew the key for this drive but after trying everything I could think about it is now sitting on my desk until I find a solution. I don't know for sure whether I forgot the key or I am using the wrong algorithm, as the version of cryptsetup I was using at the time was different (different Debian release) and I read the defaults have changed. I am fairly sure I used the '-c aes-plain' option initially but I had no luck with it. I also tried aes-cbc-essiv and had no luck either. Is there anything else I could try ? Now, in the case I just forgot the key, it wasn't very long anyway (~ 10 characters) and I got some ideas about the characters it might contain. Considering that most chances are that the algorithm is aes-cbc-plain, it is probably possible. I tried writing a script for this, but there are several issues : - cryptsetup takes a while to create a devmapper mapping - trying to mount the partition also takes a while - cryptsetup then takes a while to delete the devmapper mapping When you put that together, it is definitely too slow to bruteforce anything. Is there anything faster I could use here ? I assume the best solution would be to extract a couple of blocks from the hard drive, those containing the filesystem superblock, decrypt it and then try to match the filesystem magic number (reiser). I don't know how to do the decryption part quick enough for a brute-force approch. Any suggestion would be appreciated. Regards, Kereoz _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
