Question about encrypted LVM

[bsharp]

I'm thinking about nuking my laptop and reinstalling with encrypted LVM for security reasons, but I have some questions first:

1. If I break my Ubuntu installation (I like to play) and I need to recover data off of an encrypted partition, can I boot up to a LiveCD, attempt to mount the partition, enter the passphrase, and access my files? To make it simpler, can I access the drives using the same passphrase from a different OS than it was created with?

2. Just how secure is the data and are there any methods of cracking the encryption? I understand that anything theoretically can be cracked, but is this one of those encryption techniques that would take thousands of years to crack with a supercomputer?

Thanks for your replies :guitar:

[heyyy]

id like to know the answer to this question myshelf too

[jerome1232]

1. Yes I have a thread I made about this which describes how. Give me a second to find it.

http://ubuntuforums.org/showthread.php?t=940904

2. Well if the passphrase is good encryption can take more than a life time to brute force. There is one weakness I know of. If the system is running, you can super cool the ram and turn off the machine, remove the ram modules and use specilized hardware and software to retrieve the encryption key.