David Tribble wrote:
>
> // write 0s and 1s to the block
> DmSet(dbP, 0, chunkSize, 0);
> DmSet(dbP, 0, chunkSize, 1);
FWIW, I got this out of the docs from a disk utility program:
Disk CleanUp can be configured to erase files using an NSA approved
erasure method. NSA erasures specify that the file be written to seven
(7) times using an alternating byte write sequence of: 00, FF, 00, FF,
00, FF, F6. Normal Disk CleanUp erasures simply write the F6 character
to deleted files.
I'm not sure if this is specifically for hard drives or if it
applies to RAM-based memory as well. The paper that was referenced
earlier in this thread at
http://www.cs.auckland.ac.nz/~pgut001/secure_del.html
notes that "official" security agency specs are highly underrated.
Regards,
Daniel.
