BitLocker key change question

G

Guest

When you change the bitlocker key, the drive does get re-encrypted?
Sector by sector. What happens if the computer re-boots/ loses power during
this process. Are there TWO keys active at that point?
 
Z

Zack Whittaker

Not entirely 100% sure on this one, but I do hope to be of some help :blush:)

When you change the key, the drive does become re-encrypted inline with the
new key. From what I imagine, if you try and understand that the way the
drive encrypts depends on the key you first type, so if you type in the same
key on another machine, in theory it could be encrypted the same way (I
think...)

If the computer reboots, not necessarily in beta builds (so might apply to
the public release), the encryption will either kick off from where it left
off, or decrypt it and ask for the key again - whether it's the same key you
used before the encryption or whether it starts the whole process off again,
still not sure.

I do think it'll vary on the software/hardware types of encryption though -
you can get hardware chips with encryption stuff on it, so this may change
how things encrypt and whether the answers I gave still apply or not. It's
sketchy... but I hope that sheds *some* light on it :blush:) We'll definately
know when the public release comes out, as will a whole load of
documentation comes with it.

--
Zack Whittaker
» ZackNET Enterprises: www.zacknet.co.uk
» MSBlog on ResDev: www.msblog.org
» Vista Knowledge Base: www.vistabase.co.uk
» This mailing is provided "as is" with no warranties, and confers no
rights. All opinions expressed are those of myself unless stated so, and not
of my employer, best friend, Ghandi, my mother or my cat. Glad we cleared
that up!

--: Original message follows :--
 
G

Guest

Thanks.
It probably keeps a sector pointer; any sector before it is encrypted the
NEW FVE key and any sector after it will be ecrypted with the OLD FVE key.
This pointer will be moved forward.

Dominik
 

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