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Old Feb 5th, 2007, 12:09 PM   #1
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File Encryption between OS X and Windows

Hey all,

Has anyone heard of software that allows file encryption (or better yet, disk encryption) that works between OS X and Windows XP? The best solution would be something that works like an encrypted *.dmg file on a Mac, but be read/writable on a PC.

I've heard of PGP Desktop, but it seems expensive and it requires two licenses, one for each OS. Correct me if I'm wrong

If you have any suggestions, it would be greatly appreciated.
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Old Feb 18th, 2007, 01:29 AM   #2
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Encryption

Unfortunatley, moving filkes within Windows is based on more than just the encryption it also relies on inherited permission's thus a file created and encrpted in one folder can loose the encryption when moved to a higher folder is the permissions for the new folder allow.

You're best bet for "Best Security Practices" are to utilise the encryption feature or each os independantly thus maintaing it's integrity. Multiplatform Os Encryption is usually reserved for network transport in the OSI structure, so unless you are using third party of site storage with multi platform remote access you will need to spend some serious cash.

Work about option is a dual formatted USB key that will allow you to transport the data back and forth, Intel based macs can read write to dos formatted keys.
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Old Feb 18th, 2007, 01:38 AM   #3
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Quote:
Originally Posted by Munchie
Unfortunatley, moving filkes within Windows is based on more than just the encryption it also relies on inherited permission's thus a file created and encrpted in one folder can loose the encryption when moved to a higher folder is the permissions for the new folder allow.
This is quite false. An encrypted file is encrypted - that is that. Folder permissions should not (and could not) have any impact on this once the file is encrypted. Edit: unless you're talking about encryption from within Windows... I wouldn't trust that to defend against a wet paper bag.

Quote:
You're best bet for "Best Security Practices" are to utilise the encryption feature or each os independantly thus maintaing it's integrity. Multiplatform Os Encryption is usually reserved for network transport in the OSI structure, so unless you are using third party of site storage with multi platform remote access you will need to spend some serious cash.
No idea what to say to that...

Quote:
Work about option is a dual formatted USB key that will allow you to transport the data back and forth, Intel based macs can read write to dos formatted keys.
Again false. All Macs running a recent version of Mac OS X (10.3+) can read and write to MS-DOS (FAT32) formatted drives. All Macs running 10.4.4 (maybe earlier) can read NTFS drives.


...and now to the original question.

PGP is pretty much a standard for enterprise-level encryption. It is expensive, but there is an open-source alternative that is compatible with PGP.

GPG is compatible with OS X, Linux and Windows.

http://www.gnupg.org/download/

I would strongly suggest reading the documentation, as it can be a bit complex. I'm fairly sure that GPG doesn't offer disk encryption, which is a rather new feature of PGP.

Edit: If you want some help setting up GPG, I can try and give you a tutorial (at least for the Mac install) over AIM.

Edit 2: Here are instructions for installing on Windows:
http://wolfram.org/writing/howto/gpg.html
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Last edited by John Clay; Feb 18th, 2007 at 01:49 AM.
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Old Feb 28th, 2007, 09:36 PM   #4
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I am not wrong but hey I am not a Sales Professional either.
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Old Feb 28th, 2007, 09:45 PM   #5
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Quote:
Originally Posted by Munchie
I am not wrong but hey I am not a Sales Professional either.

Well, you ARE wrong on a few things, but if you want to let this drop, I'm fine with that.
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Old Mar 1st, 2007, 04:22 PM   #6
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ok
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