| From: | Stephen Frost <sfrost(at)snowman(dot)net> |
|---|---|
| To: | Joe Conway <mail(at)joeconway(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Antonin Houska <ah(at)cybertec(dot)at>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, "Moon, Insung" <Moon_Insung_i3(at)lab(dot)ntt(dot)co(dot)jp>, Ibrar Ahmed <ibrar(dot)ahmad(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [Proposal] Table-level Transparent Data Encryption (TDE) and Key Management Service (KMS) |
| Date: | 2019-06-16 18:10:23 |
| Message-ID: | 20190616181023.GS2480@tamriel.snowman.net |
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| Lists: | pgsql-hackers |
Greetings,
* Joe Conway (mail(at)joeconway(dot)com) wrote:
> On 6/16/19 9:45 AM, Bruce Momjian wrote:
> > On Sun, Jun 16, 2019 at 07:07:20AM -0400, Joe Conway wrote:
> >> In any case it doesn't address my first point, which is limiting the
> >> volume encrypted with the same key. Another valid reason is you might
> >> have data at varying sensitivity levels and prefer different keys be
> >> used for each level.
> >
> > That seems quite complex.
>
> How? It is no more complex than encrypting at the tablespace level
> already gives you - in that case you get this property for free if you
> care to use it.
Perhaps not surprising, but I'm definitely in agreement with Joe
regarding having multiple keys when possible and (reasonably)
straight-forward to do so. I also don't buy off on the OpenSSL
argument; their more severe issues certainly haven't been due to key
management issues such as what we're discussing here, so I don't think
the argument applies.
Thanks,
Stephen
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