Re: storing an explicit nonce - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: storing an explicit nonce
Date
Msg-id 20210526024156.GU3048@momjian.us
Whole thread Raw
In response to Re: storing an explicit nonce  (Bruce Momjian <bruce@momjian.us>)
List pgsql-hackers
On Tue, May 25, 2021 at 09:31:02PM -0400, Bruce Momjian wrote:
> I don't understand your computation above.  You decrypt the page into
> shared buffers, you change a hint bit, and rewrite the page.  You are
> re-XOR'ing the buffer copy with the same key and nonce.  Doesn't that
> only change the hint bits in the new write?

Can someone explain the hint bit exploit using the process I describe
here?

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  If only the physical world exists, free will is an illusion.




pgsql-hackers by date:

Previous
From: Bruce Momjian
Date:
Subject: Re: storing an explicit nonce
Next
From: Amit Kapila
Date:
Subject: Re: locking [user] catalog tables vs 2pc vs logical rep