Greetings, * Alvaro Herrera (alvhe...@2ndquadrant.com) wrote: > On 2019-Jul-10, Bruce Momjian wrote: > > > Good, so I think we all now agree we have to put the nonce > > (pg_class.oid, LSN, page-number) though the cipher using the secret. > > Actually, why do you need the page number in the nonce? The LSN already > distinguishes pages -- you can't have two pages with the same LSN, can > you? (I do think you can have multiple writes of the same page with > different LSNs, if you change hint bits and don't write WAL about it, > but maybe we should force CRC enabled in encrypted tables, which I think > closes this hole?)
The point about the LSN not changing is definitely a very good one.. I agree that we should require checksums to deal with that possibility. Thanks, Stephen
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