title: cryptsetup offline attack with list of known keys possible?
body: <p>I have 16 servers that have been out of operation for over a year and removed from there rack, all of the servers used full disk encryption (cryptsetup). I have a list of keys, all of which are a minimum of 48 bits using every character on the UK keyboard.</p>
  
  <p>The problem I have is that I don't know which key is for which server and due to the key length and the 3 tries and then reboot policy it is taking a VERY long time to figure out which key unlocks which server as all the labels which named the server have since been removed.</p>
  
  <p>Is it possible to dump the hash off each server and then perform an offline attack against the hash using the list of keys I have. This would save me a lot of time and effort and seems like a much easier way of performing the operation.</p>