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Detailed Truecrypt questions >>> for a Truecrypt expert

Posted on 2012-04-09
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Last Modified: 2012-04-25
1. Can TC encrypt an existing folder with data i.e. if I have a folder with 20gb of stuff, can I avoid having to move that whole folder into the 20gb container (I'm running low on disk space so I am hoping I dont need a total of 40gb to do this).

2. Is it possibly to incrementally increase the size of a TC container once it has been created and is in use?

3. When syncing a container with a cloud storage site like Livedrive, does the full container incrementally sync or would the whole 20gb container need to be transferred again because I added a few files?  What is the best way of syncing an incremental change in a container?

Thanks.
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Question by:abdb469
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Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 37825926
1. No, you cannot encrypt a folder, you can move the folder into a truecrypt container. (which is mounted and encrypted)

2. Currently, there is no support to increase the size of the encrypted container.

3. The whole 20GB container would need to be synced again, as it's checksum and signature has changed. Because the data has changed which is encrypted inside the container, block changes cannot be tracked.
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Author Comment

by:abdb469
ID: 37826833
What would you recommend as the best way to sync incremental files to an online cloud storage provider like Livedrive, using secure encryption products like TC?  I read somewhere on someone's Yourtube video that the are doing incremental backup of TC containers...I'll try and post the link when I get home.
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LVL 120
ID: 37826857
make sure the TC volume is mounted, LiveDrive or Wuala can then sync the files.
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Author Comment

by:abdb469
ID: 37826887
Could you please explain in a little more detail.  If I am backing up the TC container to Livedrive (and not using the Briefcase option) how is this then done?  I cant mount the container on the other side.
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LVL 120
ID: 37826920
make sute the tc container is mounted as a driver letter
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Author Comment

by:abdb469
ID: 37831823
Your suggestion will not work if using BACKUP rather than BRIEFCASE right?
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LVL 120
ID: 37832106
I think you will find Briefcase option of Livedrive, because it maps to a drive letter on fixed local disk, is not compatible with tc containers, which need to be mounted.

Unless the tc container is in your briefcase, but Livedrive will not be able to determine which files have changed in the encrypted container, so it will always backup the entire container.
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Author Comment

by:abdb469
ID: 37832549
Sorry I didnt understand your last msg.  Are you saying that I have to use Briefcase because the TC has to be mounted as a drive letter and only then will it work?
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LVL 120
ID: 37832579
what are you wanting to do?

Backup only the changed files in the truecrypt container to Livedrive?
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Author Comment

by:abdb469
ID: 37849436
Basically, I am trying to achieve one of two things.

I would like the ability to easily open a TC file on L:\ for instance on my mac after entering a password to access the data.  At some point I will want that sync'd with Livedrive within a secure container environment so that if anyone accessed my Livedrive, they cannot simply just access all my files (lets disregard not putting important stuff on the cloud or using zip etc).  

The other option is to do a proper backup rather than a sync, for permanent storage but I dont want to be transferring 1 gig TC files just because I added a 10k MS Word or excel file.
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LVL 120
ID: 37849495
no sync program is going to be able just to complete the sync of 10k files youve added to encrypted comtainer.

any sync program will just detect a change in the 1 gig tc file.
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Author Comment

by:abdb469
ID: 37849967
10k is the the one single file size.  Not 10,000 individual files.
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LVL 120
ID: 37850423
yes, 10k in size.
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