On Fri, Jul 19, 2019 at 01:59:41PM +0200, Tomas Vondra wrote:
> On Fri, Jul 19, 2019 at 12:04:36PM +0200, Antonin Houska wrote:
> > We can guarantee integrity and authenticity of backup, but that's a separate
> > feature: someone may need this although it's o.k. for him to run the cluster
> > unencrypted.
> Yes, I do agree with that. I think attempts to guarantee data authenticity
> and/or integrity at the page level is mostly futile (replay attacks are an
> example of why). IMHO we should consider that to be outside the threat
> model TDE is expected to address.
Yes, I think we can say that checksums _help_ detect unauthorized
database changes, and usually detects database corruption, but it isn't
a fully secure solution.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
