README_CR

   1 Adapted from Yubico's white paper on full disk encryption:
   2
   3 user record:
   4         userid
   5         seqno
   6         encrypted blob:
   7                 data:
   8                         shared-secret
   9                         payload
  10                         crc
  11                 key:
  12                         hmac-sha1:
  13                                 data:
  14                                         userid
  15                                         password
  16                                         seqno
  17                                 key:
  18                                         shared-secret
  19
  20