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Re: can I just encrypt tables? what about the app?






Am 29.02.2016 um 20:54 schrieb Gary Smith:
On 29/02/2016 19:50, Reindl Harald wrote:

cryptsetup/luks can achieve that way better

Only to a degree.

no - not only to a degree - when the question is "not store anything unencrypted on the disk" the is no degree, but or if

Once the disk is unencrypted, you've got access to the
filesystem. If you've got physical access to the machine, then anything
which gives you console access gives you (potentially) access to the
underlying database files. If you can get those, it's trivial to get
access to the dataset that they contain.

However, if TDE is employed, then you've got another significant
obstacle to overcome: The data is only encrypted (aiui) once it's in
memory. At this point, you're needing to do attacks on RAM to get access
to the data - and even then, you're unlikely to get 3 bars for a jackpot
payout of the whole database schema, assuming a decent sized database.

in theory

in reality you don't need to hack around in the RAM - mysqld needs to have access to key for operate with the data and so you need to find only that piece

the same for encryption on the application side before send data to the db-layer - see the start and subject of that thread how far people are away from understanding how and on what layer things are encrypted and what excatly is protected in which context....

there is no "turn this on and you are safe" without deeper understanding

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