ATA-Protocol-> PW support?

[sebastian_(_dot_)_rother_(_at_)_jpberlin_(_dot_)_de]

The ATA-Protocol supports to set a HDD-PW (not the BIOS PW!) to protect HDDs.
This would maybe a nice feauture for notebook-Users.

I don't know if it's easy to implement I just noticed that it would be
possible during the ATA-Protocol.
It allows to use 2 keys: User-Key and a Master-Key (Both are 32Bit, engl.
key-layout(so no german spec. charackters)).
Also it supports to run in 2 modi: secure and maximum.

If a HDD runs in the "secure" mode it accapts also the master-key to
unlock the HDD and allows acces to all files.
In the "maximum"-mode the HDD accapts the master-key too but just to make
the HDD work again (e.g. if you forgot the PW). It will delete the whole
HDD before it unlocks it so that the HDDs will be formated.

It's maybe a nice feauture for Notebook-Users because it safes the data.
I think it could be implemented in OpenBSD but I'm not sure.

Does somebody knows something about this special of the ATA-Protocol?
I didn't found anything wich tells me if it's already supported or not.

But I think it's maybe a good clue. :)

Kind regards,
Sebastian