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Re: Key encryption and relational integrity

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On 3/28/19 7:29 AM, Moreno Andreo wrote:
Il 27/03/2019 07:42, Tony Shelver ha scritto:
Not in Europe, but have worked a bit with medical records systems in the USA, including sharing across providers.

The only other way to do it would be to store the encrypted key value in both user.id <http://user.id> and medications.user_id.  That would encrypt the data and maintain relational integrity.
Hmmm... if user.id and medications.user_id are the same, I can link user with medication... and GDPR rule does not apply..... or am I missing something?

Yes the link means that someone could use the medications.user_id to fetch the rest of the user information from the user table. Unless you encrypted that information also, which I gather you do not want to do for performance reasons.


--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx





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