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-   -   CryptDrive alpha test (http://www.1src.com/forums/showthread.php?t=127452)

pruss 06-12-2007 09:20 AM

Quote:
Originally Posted by juggernaut#2
Well, the steps until "1st sync" complete with no errors (I did create a new card, itīs got an ID now [pretty long], and so far Iīve had no FEīs). Only flaw I noticed is DocsToGo complaining that a (copied) word file canīt be openend because "Itīs not an MS Word file".


How did you copy the file, and what kind of a card were you using?

p.s. VirtualDrive is a slot driver.

o_paroikos 06-12-2007 09:25 AM

Hi Alex,
I installed 0.32 on my TX, which has a 4GB Transcend brand SD card.

I did not like how long FileZ was taking to delete my old 0.30 era VIRTDRIV.IMG file (after removing its read only status), so I reset the PDA and used Card Info to format the card. I then used CryptDrive's create feature to do full disk encryption. It went VERY quickly (seconds, not minutes). I hid the internal drive and ejected and reinserted the card. It seemed to be working fine.

I then did a backup to it from NVBackup, which worked fine. I tried DriveMode and that worked fine, too. I then ejected the card, stuck it in my external SD card reader and it was unreadable (good).

In order to make sure it was unreadable from the PDA without the password, I put it back in and hit cancel when it prompted for the CryptDrive password. It then reset my device and went into a reset loop. Even warm resetting would not work. It would boot the OS, come to the security password input screen and then reset. I took the card out and it then loaded the OS just fine.

With the PDA on and functioning, I put the card back in, and it went back into its reset loop. So, I formatted the card with my external card reader and it is back to working fine, just not encrypted.

Did I do something wrong?

Thanks,
Josh

o_paroikos 06-12-2007 11:23 AM

Hi again, Alex,
I use PictureLogin on my TX. Every time my device auto-locks and use PictureLogin to unlock it, CryptDrive prompts me for my password. I thought it was supposed to blank the password when it locks? No?

Thanks,
Josh

pruss 06-12-2007 02:36 PM

Josh:

Yes, it blanks the password, so you need to re-enter it. Am I missing something?

I wonder if encrypted cards do something weird to the system. Maybe I should leave the first sector unencrypted.

o_paroikos 06-12-2007 03:16 PM

Hi Alex,
Thanks for the reply. I have been playing around with full card encryption today. I think something is wrong. I have done the following "clean slate" experiment.

First, I format my 4GB card in my external card reader. Then, I put it into my TX and format it again with Card Info (redundant, I know). Then I create a full card volume in CryptDrive and give it a password. I pop it out and in and it works fine. However, if I do a soft reset, it goes into a reset loop as soon as it gets to the PDA password entry screen.

I'd be happy to try your unencrypted first sector idea as soon as you have it compiled in.

Is there any way to get the PDA to not prompt for the CryptDrive volume password after every time it is unlocked? I am addicted to PictureLogin and used to getting into my PDA with a single stylus tap. I'd like the card to be unreadable if removed or if the PDA is hard reset, but entering the password every time is going to lead me to setting a much longer auto-lock time which is unadvisable.

Thanks!

Josh

o_paroikos 06-12-2007 04:19 PM

By the way, I think our miscommunication about "blanking" the password is that I thought you meant that it temporarily disabled the password protection. I guess that would be silly.

Josh

pruss 06-12-2007 06:41 PM

I wonder if the hotsync problems are due to the fact that hotsync is an ARM-based app, and CryptDrive's slot driver is 68k-based. If so, then I won't be able to fix it, because I don't know how to write an ARM-based slot driver. (But since the source code for CryptDrive is available, if ever Dmitry has some time, he would probably be able to do it in 10-30 minutes.)

MrPib 06-20-2007 09:34 AM

Still no luck with 0.32 on my E2. Since I'm apparently the only cheap bastard here who's using such a lowly machine, it looks like my porn will have to stay unencrypted. Oh, I mean my highly classified documents! Yeah, that's it.

o_paroikos 06-20-2007 10:05 AM

Hi Alex,
Do you think you might soon be able to change CryptDrive full card encryption to leave the first sector unencrypted? I backed up my 2GB of data to my PC and haven't copied it back yet (after the experimenting above) since I figure I don't want to do it twice if your update will come out soon. If it will be a while, though, I'll spend the time to do it twice.

Thanks,
Josh

pruss 06-20-2007 02:21 PM

I am busy getting ready to move (to Waco TX) and to buy a car, and really haven't had the time to look into this. Sorry.

What exactly is happening on the E2?

o_paroikos 06-20-2007 02:24 PM

Hi Alex,
No worries. Thanks for the reply. Good luck with your move!

Josh

FerdFerd 06-20-2007 02:26 PM

Quote:
Originally Posted by pruss
I am busy getting ready to move (to Waco TX)
Going to Baylor?

juggernaut#2 06-20-2007 03:32 PM

Quote:
Originally Posted by pruss
How did you copy the file, and what kind of a card were you using?

sry, I seem to have missed this one. I copied a DOC file from itīs original dir in <card>\Documents to <cryptdrive>\Documents using McFile. The card Iīm using is a 4gig transcend SD card, which works fine.

juggernaut#2 06-20-2007 04:40 PM

Am I the only one who ever tried ...
 
... to transfer ANY file to the crypted volume via hotsync? I just re-read the thread, but canīt find no other remarks, maybe noone hotsyncs at all ...

Itīs not just DTG, itīs every app with which I tried transferring any file, like QuickInstall, InstApp, QuickNews (if you set the podcast storage to the crypted drive), SmartListToGo, you name it. As soon as a file transfer over hotsync tries to access the crypted drive, it not only fails, but will leave the crypted drive unreadable.

Am I alone in the dark?

FerdFerd 06-20-2007 04:46 PM

I haven't tried all those kinds of files, but I haven't had any corruption when transferring Desktop to Go files to encrypted drives via hotsync. I think those are the only kinds of files I've tried that require their own conduit. I'm reasonably sure I reported that before. Can you transfer a prc via hotsync to the encrypted drive without corrupting it? (not that I could make use of your answer, mind you!)

I've been sitting out the versions for fully encrypting the card, though, if that matters.


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