Re: Application Level Encryption

On Sun, Jul 5, 2020 at 3:23 PM Sam Gendler <sgendler(at)ideasculptor(dot)com>
wrote:

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> On Sun, Jul 5, 2020 at 11:41 AM Michel Pelletier <
> pelletier(dot)michel(at)gmail(dot)com> wrote:
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>> I'm working on an approach where the decrypted DEK only lives for the
>> lifetime of a transaction, this means hitting the kms on every transaction
>> that uses keys. It will be slower, but the time the decrypted key stays in
>> memory would be minimized.
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> Watch out for KMS api quotas if you go that route. Their docs don't state
> what the default quotas are, so you have to go to your quotas page in the
> console to find out, but they likely aren't very high and might well be
> exceeded by the transaction rate on even a relatively small db instance.
>

Thanks for pointing that out, it's true that it's a limited route with
cloud KMS. If you control the device like a Zymkey in a secure enclosure,
the cost is minimal, although the key derivation rate is very slow.

-Michel

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