Basically, you would have to take the device mapper crypto target specifocation and try to read the volume with software you implemebnted yourself. To check that at least some transformation is done, look at the raw data in the partition (/dev/sda6). It needs to look random. As to mounting, the cipher is not involved in the mount. That would be for an encrypted filesystem, but standard dm-crypt does create an encrypted partition (i.e. raw storage). 'volume0' in your case is already unencrypted. The encrypted partition is /dev/sda6. Arno On Thu, Apr 16, 2009 at 12:39:58PM +0600, Muhammad Sharfuddin wrote: > I did the following > > # echo 0 `blockdev --getsize /dev/sda6` crypt aes-plain > 0123456789abcdef0123456789abcdef 0 /dev/sda6 0 | dmsetup create volume0 > > # mkfs.reiserfs /dev/mapper/volume0 > # mount /dev/mapper/volume0 /mnt > # mount |grep volume0 > /dev/mapper/volume0 on /mnt type reiserfs (rw) > > Now how can I verify that its(encryption) working fine or not ? > > I unmount and mount the /dev/mapper/volume0 several times, but it never > ask me to provide the cipher. > > How can I be sure that my data is safe ? > > -- > Regards, > > Muhammad Sharfuddin > > > > > --------------------------------------------------------------------- > 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 > -- Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@xxxxxxxxxxx GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F ---- Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans 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 - http://www.saout.de/misc/dm-crypt/ To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx For additional commands, e-mail: dm-crypt-help@xxxxxxxx
