gbde blackening feature - how can on disk keys be "destroyed" thoroughly?

[David Kreil]

Dear Poul-Henning,

After a job induced pause in my strong interest in encryption solutions, I 
have on my return tried to learn what has since changed with gbde. I must be 
missing the obvious because I cannot locate a "changelog" or "release notes" 
document.

You have been most helpful in our discussion last year. I have now, in 
particular, been wondering whether you have since at all had a chance of 
revisiting the issue of blackening keys with multiple physical random 
overwrite before resetting them to zero to avoid key recovery by methods as 
available from companies like www.dataclinic.co.uk.

With many thanks
and best regards,

David.


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Dr David Philip Kreil               
Research Fellow, Darwin College,  | WWTF Vienna Science Chair of
University of Cambridge		  | Bioinformatics, Dept of Biotechnology,
++44 1223 764107, fax 7092 810040 | c/o IAM / BOKU, A-1190 Muthgasse 18
www.inference.phy.cam.ac.uk/dpk20 | ++43 1 360066830