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On Tue, 4 May 2004 09:54:36 +0200 |
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"Marc Ballarin" <Ballarin.Marc@×××.de> wrote: |
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> shred is not reliable on modern filesystems. Clever block allocation |
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> algorithms, journalling and on-disk write-caches make secure deletion from |
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> userspace unreliable (shred's man page lists even more examples). |
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i've actually thought about that problem and was wondering, since the clever file systems and such would probably not want to move the blocks around on every write, why couldn't you zero out the file backwards (i understand this could end up a buffering issue but i think that can be worked around) after that you just delete it like normal? |
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-----BEGIN GEEK CODE BLOCK---- |
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Version: 3.1 |
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GCS/CM/E/M/S/O d--(-) s:+>:- |
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a--->-->->>+>++>+++$ C+++>++++$ UL++++>++++$ |
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P+++>++++$ L++++>++++$ !E-? W++>++$>+++$ |
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N++>* !o? !K? w--->---$ O-- M-@ !V--? PS+++(++(+((-)))) |
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PE Y+(++)@ PGP+++(++) t+++>+++$ 5--(-)@ X++@>+++@ |
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R+(++)@ tv+++@>++@ b+>++ DI++++ D+++@ G+++>++++ |
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e>+$>++$>+++$>++++$>+++++$ h+>++ r*(--(++))@ !y+>-->->+++@ |
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-----END GEEK CODE BLOCK----- |
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