Sever side encryption with RGW multisite configuration might lead to data corruption of multipart objects

Issue :

As a part of internal testing, we observed an md5 mismatch of replicated objects when testing rgw's server-side encryption in multisite deployments. This data corruption is specific to s3 SSE encrypted multipart uploads and only affects the replicated copy, the original object remains intact.

Issue in detail:

Encryption of multipart uploads req...