Quote from: Synaesthesia on June 27, 2011, 07:40:00 PM

Check this out, it's even simpler, just create an encrypted disk image:
https://en.bitcoin.it/wiki/Securing_your_wallet#Mac

This indeed:

Quote

Follow these instructions to backup all the bitcoin data (wallet and block chains) to an encrypted disk image.

Open Disk Utility
Click New Image and choose 500MB, 128-bit or 256-bit (faster or more secure) encryption and single partition.
Save it somewhere you won't lose it (like your Wuala, Dropbox, Strongspace or whatever)
Choose a safe and strong password
Move everything from ~/Library/Application Support/Bitcoin/ to the image
Symlink it back so the app would be able to use it
ln -s /Volumes/Bitcoin ~/Library/Application Support/Bitcoin

Don't forget to mount your image before using Bitcoin and unmount after quitting it.

And I do this on a separate User Account that I exclusively use for the Bitcoin client. To check my balance, I use http://forum.bitcoin.org/index.php?topic=23123.0

I think it is pretty safe. Probably not 100% safe, but I don't know a better way that is at least reasonably practical.