Hi! Is there any plan to add support for client-side symmetric encryption in repository-s3 plugin in addition to server-side symmetric encryption.
In our case we need to do all the encryption and key management on our side (client-side), and it had been great to be able to make use of the snapshot/restore functionality in ES using the repository-s3 plugin.
I found a pull request regarding this topic (https://github.com/elastic/elasticsearch/pull/16843/files#diff-f4c0c5e19b435a58dc4ee2e5385bb3fe), and it seems that it is already done a piece of work to facilitate this.