Does anyone know if there are any programs which can be used to encrypt files on an SD card, that can work with both Windows and Linux?

Thanks!

"openssl enc"? gpg? encfs? (OK, so there's only a reader for MICROS~1).

TrueCrypt http://www.truecrypt.org

Thanks for the info. I'm using a windows-only Cryptainer right now...not the solution that I want (if there was ever a disaster, and I needed a computer, I don't want to have to rely on it being windows...), but it's gui based, and relatively easy to work with. I d/l TrueCrypt, and printed off the user manual to go thru tonight, but I'm afraid it's gonna be waaay too complicated. Same goes with the others, gpg et al. If I was a little smarter, maybe, ,but what I'm looking for is something gui and simple, that will get the job done across different machines with a minimum of effort. Of course, security breeds the necessity of a little complication, but I digress...

Thanks for the input!
Have a great one!

what I'm looking for is something gui and simple, that will get the job done across different machines with a minimum of effort.
Aw, come on... Openssl is just a function / shell script / batch file away with say "openssl des3 -salt -in $1 -out $1.enc" or "openssl des3 -salt -in %1 -out %1.enc"...

Hello, Geocritter. I have arrived from the year 2014 and have brought a gift from the future: drag-and-drop encryption software, written in JavaScript. https://minilock.io/.