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Ubuntu 9.04 Home Encryption Performance

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  • #16
    Originally posted by Louise View Post
    I wonder if a GPU could be used for AES?
    Yes it is possible.

    http://www.manavski.com/downloads/PID505889.pdf

    There also have been talk of nvidia opening access up the AES engine found on the GF 8 + to the Cuda toolkit.

    Aso if you own the book GPU Gems 3 there is a dedicated chapter to this subject.
    Last edited by deanjo; 12-08-2008, 01:12 AM.

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    • #17
      I'd like to see how encryption runs on SCSI. I'm tired of the inconsistent performance with desktop controllers.

      Encryption would be really cool, but getting locked out of your data is unacceptable.

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      • #18
        Originally posted by WSmart View Post
        I'd like to see how encryption runs on SCSI. I'm tired of the inconsistent performance with desktop controllers.

        Encryption would be really cool, but getting locked out of your data is unacceptable.
        That would apply to a very small amount of the community. If your running scsi's chances are your running servers in a corporate environment and you should have alot more security measures in place then just encrypting the drive.

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        • #19
          Originally posted by deanjo View Post
          Yes it is possible.

          http://www.manavski.com/downloads/PID505889.pdf

          There also have been talk of nvidia opening access up the AES engine found on the GF 8 + to the Cuda toolkit.

          Aso if you own the book GPU Gems 3 there is a dedicated chapter to this subject.
          Cool! Is it a nVidia feature only, or could the same be done for ATi?

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          • #20
            Originally posted by jamei View Post
            Re: eCryptfs vs LUKS

            LUKS is block device encryption (e.g. /dev/sda1)
            ecryptfs is file level encryption (e.g. /home/user/Private/). You mount a folder, and every file created in that folder will be encrypted individually. If you umount the ecryptfs folder, you will still see the files, but the contents will be garbled.

            There are several advantages to this approach, but the main one is that the home directory for each user can be encrypted with a different key.
            With LUKS, it is only possible to encrypt the home partition, or with more work, create an encrypted partition for each user (with fixed size, less flexibility).

            AFAIK, ecryptfs is available on Fedora as well.
            Thanks for clearing that out

            I like no one can see what files I have, so I say with LUKS

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            • #21
              Originally posted by deanjo View Post
              That would apply to a very small amount of the community. If your running scsi's chances are your running servers in a corporate environment and you should have alot more security measures in place then just encrypting the drive.
              Wa waah wuh wa woaoh... waa ua wah woah wo' Whuah waa wo waa....

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              • #22
                I have started to use the encryption facility in 8.10 (the encrypted Private folder), but after enabling this, login became very slow, taking an extra 5s or so.

                Did any one else notice this? I admit I am using rather humble hardware (Celeron 1500 laptop. 3+ years old), but this performance drop is rather annoying.

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