I need to encrypt my USB disk so it's accessible both in Ubuntu and Windows 7. I plan to use cryptsetup in linux and another one in Windows, if that's possible. Is it possible to use cryptsetup drives on Windows?
Here is what wikipedia says:
dm-crypt and LUKS encrypted disks can be accessed and used under MS Windows using FreeOTFE, provided that the filesystem used is supported by Windows (e.g. FAT/FAT32/NTFS).
Encrypted Ext2, Ext3 and Ext4 filesystems are supported by use of Ext2Fsd (all ext* versions) or Ext2 Installable File System for Windows (ext2 and ext3 only) and with FreeOTFE
Cryptsetup/LUKS and the required infrastructure have also been implemented on the DragonFly BSD operating system.