Encryption Mac -> Windows
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From: Robert Haar on 25 May 2010 18:00 On 5/24/10 8:17 PM, "Kir�ly" <me(a)home.spamsucks.ca> wrote: > Can anyone suggest how I can encrypt those scans on my Mac (10.5.8) so > that they can be easily decrypted on a Windows machine? Preferably > without having to install additional decrypting software on the Windows > machine? I know nothing at all about Windows and so I have no idea > what decrpytion tools are preinstalled. Would a hardware solution appeal? There are a couple of USB storage devices that have encryption built in. You could put your sensitive data onto the USB device (in the secured area) and then lug that into the target machine and access the files as long as you have the key.
From: Warren Oates on 25 May 2010 18:10 In article <C1XKn.4805$Z6.3114(a)edtnps82>, me(a)home.spamsucks.ca (Király) wrote: > I don't have an Intel Mac, which PGP seems to require. http://www.pgpi.org/products/pgp/versions/freeware/mac/8.0/ -- Very old woody beets will never cook tender. -- Fannie Farmer
From: =?ISO-8859-1?Q?Kir=E1ly?= on 25 May 2010 20:50 Warren Oates <warren.oates(a)gmail.com> wrote: > > I don't have an Intel Mac, which PGP seems to require. > > http://www.pgpi.org/products/pgp/versions/freeware/mac/8.0/ That too links to an Intel-only version. I have taken David's suggestion and downloaded TrueCrypt. It seemed to work just fine on the Mac end of things. I will try tomorrow at work to see how easy it is to decrypt on Windows. -- K. Lang may your lum reek.
From: =?ISO-8859-1?Q?Kir=E1ly?= on 29 May 2010 03:55 Lewis <g.kreme(a)gmail.com.dontsendmecopies> wrote: > You could also put the scans into a pdf and password protect the PDF, > right? That would be an excellent solution, but is the encryption method used really secure? Searching online for "decrypt PDF" brings up lots of tools that claim to be able to crack PDF encryption. Or am I misunderstanding? If OS X's built-in PDF encryption really is worth its salt then that is definitely the route I will go. -- K. Lang may your lum reek.
From: David Ryeburn on 30 May 2010 04:37
In article <0V3Mn.5150$Z6.4203(a)edtnps82>, me(a)home.spamsucks.ca (Kir�ly) wrote: > I tried TrueCrypt and it failed one of my tests - that > being to log on to a Windows machine in a public library (a situation > that I'd likely be in if I were to need to access those files) and try > to download and install the decrypting software there. This doesn't surprise me. However if you could use a Mac or PC belonging to a friend who trusts you enough to let you install TrueCrypt, then you'd be OK. You don't need to download the TrueCrypt software, provided you can rely on not losing a USB Flash unit, or having it stolen. You can put your encrypted files as well as installation software for both Mac and Windows versions of TrueCrypt on such a device. > This is why I'd > like to find a solution that won't require installing any additional > software on the windows box - most public access terminals likely won't > allow me to download and install software. If you put unencrypted versions of your files inside the Public folder inside your Dropbox and memorize the URLs for those files you can access them, without using any decryption software, from any computer having web access and a web browser. What distinguishes the URL of one of my files in the Public folder inside my Dropbox folder from any other file inside the Public folder inside anyone else's Dropbox folder is a seven digit number (the same for all the files inside my Dropbox folder, so you have 10^7 guesses) and the name of the file itself (which you could make weird enough for it to be hard to guess). If I just use the 7 digit number and not the file name the response is the following: Oops! (404) We can't find the page you're looking for. Check out our FAQ or forums for help. Or maybe you should try heading home. The advantages and disadvantages of using Dropbox in this way are obvious. One way around the problem of people or bots finding your files by random search, unlikely though that may be, is to encrypt the files in such a way that you can decrypt them in your head. I wouldn't use ROT13, but something not much more complicated than that would keep anyone or anything stumbling upon your files from having a significant probability of getting anything meaningful out of them. As I indicated, I mainly use TrueCrypt when exchanging information with my wife and our children, all of whom have the software installed on their computers. If you come up with a solution to the problem which doesn't require a friend who trusts you and which is more secure than my Dropbox approach, I would appreciate hearing about it. David -- David Ryeburn david_ryeburn(a)telus.netz To send e-mail, use "net" instead of "netz". |