| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Ants Aasma <ants(at)cybertec(dot)at> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Antonin Houska <ah(at)cybertec(dot)at>, Robert Haas <robertmhaas(at)gmail(dot)com>, Sasasu <i(at)sasa(dot)su>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: storing an explicit nonce |
| Date: | 2021-10-12 21:25:48 |
| Message-ID: | 20211012212548.GC20500@momjian.us |
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| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Oct 12, 2021 at 11:21:28PM +0300, Ants Aasma wrote:
> On Tue, 12 Oct 2021 at 16:14, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>
> Well, how do you detect an all-zero page vs a page that encrypted to all
> zeros?
>
> Page encrypting to all zeros is for all practical purposes impossible to hit.
> Basically an attacker would have to be able to arbitrarily set the whole
> contents of the page and they would then achieve that this page gets ignored.
Uh, how do we know that valid data can't produce an encrypted all-zero
page?
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
If only the physical world exists, free will is an illusion.
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