On vendredi 16 janvier 2009 19:35:22 Stefan X wrote: > Hi! > I forgot a password for an dm-crypt encrypted partition and would like > to try to break the encryption by brute force. Therefore I have some > questions. > > Are there incompatibilities between old dm-crypt and LUKS or is it > possible to mount an old partition which is encrypted with dm-crypt (no > LUKS!) in an up-to-date distributions? > Not realy > Tools like John the Ripper are great for cracking hashed passwords. Is > it possible to extract a hash out of a partition which can be used for > such attacks as John the Ripper do? If so, do you have any reference how > to execute this task? > Code yourself a C/C++ programe using john library > Otherwise, I would need to try to mount the partition with each > potential password which would be quite slow. Do you have any > suggestions how to speed up this process? > Do like IBM, user a farm of server and makes them run for 4 month (ibm did a aes brute force and they completed it in 4month) To day you the trush i think you loosed everything, better try remember or find old key. Luks may have multiple key (7 slot), each one can store a password to decypher the the master key, try to find the other key. Anyway luks is designe to crypt the data on a military level, don't ever dream to break it yourself except if you or someone is real expert in security that discover a failure in aes or luks design. The only other way would be to have friend in NSA or company with farmserver that you can use for month... Try the dm-crypt mailing list : dm-crypt à saout é de, but it's very unlikely that you would fin a positive answer to your problem --------------------------------------------------------------------- dm-crypt mailing list - http://www.saout.de/misc/dm-crypt/ To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx For additional commands, e-mail: dm-crypt-help@xxxxxxxx
