On Mon, Jul 8, 2019 at 11:18:01AM -0400, Joe Conway wrote: > On 7/8/19 10:19 AM, Bruce Momjian wrote: > > When people are asking for multiple keys (not just for key rotation), > > they are asking to have multiple keys that can be supplied by users only > > when they need to access the data. Yes, the keys are always in the > > datbase, but the feature request is that they are only unlocked when the > > user needs to access the data. Obviously, that will not work for > > autovacuum when the encryption is at the block level. > > > If the key is always unlocked, there is questionable security value of > > having multiple keys, beyond key rotation. > > That is not true. Having multiple keys also allows you to reduce the > amount of data encrypted with a single key, which is desirable because: > > 1. It makes cryptanalysis more difficult > 2. Puts less data at risk if someone gets "lucky" in doing brute force
What systems use multiple keys like that? I know of no website that does that. Your arguments seem hypothetical. What is your goal here? -- Bruce Momjian <br...@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 +
