Security of encrypted disk images?

[riker1384]

I have 10.4 but I think this is a general question.

Right now my Ipod is bigger than the drive in my computer. If I were to copy my whole drive, or just my user directory, onto an encrypted disk image and put that on my Ipod, would it be pretty secure? I was thinking it would be an extra backup, and if the La Palma tsunami or some other disaster struck, I could just grab my Ipod, and I'd have all my most important data. What do you think?

I'd want to be sure though that the encryption is secure so someone wouldn't have my stuff if they stole the Ipod or I lost it.

 

[Mernak]

It will be as secure as the password that you choose to encrypt it with. There are 2^128 (~3.4 x 10^38 or 34 unadecillion) possibilities, so as long as you use a good password, nothing but a dedicated server farm could break it anytime soon.

 

[TheStu]

Just remember though, that is Moore's Law holds true, then every 2 years, your password becomes half as hard to crack.