On Wed, Mar 29, 2017 at 15:42:03 CEST, Waqar Khan wrote: > Hi, > I have read through the FAQ and its got a lot of useful information > from the backup section. Thanks! [...] > Lastly, a few people have access to this machine (through the same > passphrase), some work colleagues, how can I protect against one > disgruntled member leaving the company and changing the passphrase > (then unmounting the volume for good measure) and not telling anyone? Simple: Have a header backup with a known passphrase and make sure that potentially disgruntled employee cannot kill that backup. Then you can just restore that header backup and use the known good passphrase in there. I would recommend using a passphrase for this that is used nowhere else and is the only passphrase in that header. Alternatively, you could write down or print the master key on paper and put that in a sealed envelope and that in a safe or bank lockbox. You should probably encrypt the master-key with PGP/GnuPG before and will still get something that still easily fits on paper and can be typed in with reasonable effort, but is less exposed than an unprotected master key and can be stored in a place where it is just not easily destroyed, Of course, you can also put a header-backup on paper, but that takes something like 50 pages or so if you just store the first keyslot. Regards, Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@xxxxxxxxxxx GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718 ---- A good decision is based on knowledge and not on numbers. -- Plato If it's in the news, don't worry about it. The very definition of "news" is "something that hardly ever happens." -- Bruce Schneier _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
