[dm-crypt] simple ideas addressing ssd TRIM security concern

alban bernard alban.bernard at yahoo.fr
Sun Apr 15 18:55:08 CEST 2012

--- On Sun, 4/15/12, Sven Eschenberg <sven at whgl.uni-frankfurt.de> wrote:
> That would render TRIMing completely
> useless anyway and you could as well
> turn it off.

Not really if there are enough TRIMed blocks before block writes occur. There lies the purpose of a "smart" layer that will be responsible of TRIMing blocks in a certain amount of the total space: a kind of TRIMed block buffer that smooths writing zeroes and spreads them among the device the "crypto" way.

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