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Thread: Locking Folder's

  1. #11
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    Re: Locking Folder's

    Quote Originally Posted by Paqman View Post
    Actually, it won't. Shred works by overwriting the file several times, which won't work on ext3. Check man shred for more info.

    I believe scrub is more effective for journalled file systems.
    *sigh*

    From shred man page:

    In the case of ext3 file systems, the above disclaimer applies (and
    shred is thus of limited effectiveness) only in data=journal mode,
    which journals file data in addition to just metadata. In both the
    data=ordered (default) and data=writeback modes, shred works as usual.
    What the above means, is that shred works fine with ext3 in its default mode. And, since shred overwrites 25 times, with a mixture of 0s and random data, and most security experts nowadays agree that 3 iterations will make data unrecoverable by most methods thar don't involve an electron microscope, I'd say shred is pretty damn good.

    As for scrub: that isn't in any of the usual repos. I've never even heard of it before.
    Last edited by t0p; August 17th, 2008 at 06:03 PM.
    "All people are scum. No matter what they look like." ~ Spider Jerusalem, Transmetropolitan #4
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  2. #12
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    Re: Locking Folder's

    I just remembered... there is a way of creating a password-protected directory in ubuntu - it's cfs.

    What cfs actually does is create encrypted filesystems. But as such a filesystem can consist of a single directory, this will, by definition, be a password-protected directory!

    Code:
    sudo apt-get install cfs
    If anyone wants to use cfs to encrypt a directory, I'll certainly point you in the right direction!
    "All people are scum. No matter what they look like." ~ Spider Jerusalem, Transmetropolitan #4
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  3. #13
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    Re: Locking Folder's

    I just thought everyone should know that while overwritting a file 25 times is obviously more secure. If a file is overwritten with say 0's even one time then that data will not be able to be recovered with any software tools period, at that point the disk will have to be taken apart and the platters examined with an electron microscope to recover readable data that once resided on them. To my knowledge you will have to make the FBI or CIA mad at you to have this sort of forensics performed on your disks as this is highly specialized recovery and regular police etc have no access to such equipment and would have to spend thousands of dollars do have this done for them so unless you are doing something incredibly stupid/evil one overwrite is sufficient to destroy data. Just thought everyone might feel safer if they knew that.

    For encrypted partitions you might try cryptkeeper aswell as it is in the repositories and when started puts a padlock on your top menu bar and you can click on that and select new encrypted folder and go from there, once installed it is accessed from Applications -> System Tools -> Cryptkeeper and it is all GUI for ease of use, in case some don't like command line programs this should be easier.

    COMMAND TO INSTALL CRYPTKEEPER

    sudo apt-get install cryptkeeper

    Also encryption will be much safer for your sensitive data then any folder passwords or permission settings as these could easily be defeated with just a live Linux CD and mounting of the disk. Encryption is encryption and will defeat all but the government, and I mean the NSA not the POLICE or FBI as they don't have the super computers for it. I saw a discovery channel program though with the NSA's "thinking machine" can crack encryption such as what we are all discussing in seconds.

    Heres a link to you tube so you can see your tax dollars at work
    http://www.youtube.com/watch?v=4VTxyRVmL5c

    And welcome to 1984

    Hope this info helps everyone both be safe & sleep at night
    Last edited by nicedude; August 18th, 2008 at 12:46 AM.

  4. #14
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    Ubuntu Development Release

    Re: Locking Folder's

    Quote Originally Posted by Pioneer5000 View Post
    Yes thats what i want to know. Also how do you set permissions anyway to make it ask for password.
    To change a folder's permissions, right click on it, select properties, and then the permissions tab. The drop down menus there allow you to change permissions. As for password protection, you are better off encrypting files. If you need to encrypt multiple files as a whole, you can put them into an archive.
    If it jams, force it. If it breaks, it needed replacing anyway. . .
    I like Unity.

  5. #15
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    Re: Locking Folder's

    no one's recommended Truecrypt yet?

    http://www.truecrypt.org

    I created a 10 gig file as a virtual encrypted disk. when i mount the virtual encrypted disk i have to supply a password and then its used like a normal folder. after I unmount the file or shutdown my pc, the folder is no longer accessible. That's what you were asking for right? Putting a password on a folder?

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