Retrieve the Passphrase from RAM Memory
I'm a Security Information student at Unisinos College, Brazil. As a paper during this semester it was me and my colleagues choice to write a paper about LUKS on Ubuntu 10.4.
My question is - Is it possible to retrieve the passphrase from RAM memory after a successful authentication and shutdown? Is this case we would turn the system on, authenticate, turn off, and then check if the passphrase would still be in the RAM memory even with the turned off computer.
If not, would it be possible to dump the RAM memory and retrieve the passphrase (now with the system turned on)?
I looked for these answers at the FAQ section but couldn't find it.
Thanks in advance,
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