You folks might be interested to know about a ticket currently open on rclone's GIT issue tracker that, when implemented, will support hashes for encrypted files and much else besides:
You might want to subscribe to that issue to keep yourselves posted about its progress.
when the new file name encryption will be implemented?
What then? Will I have to re-encrypt and re-upload the backup to start using it?
I think (unless someone else is working on this) only @ncw knows
Seriously, monitor the issue for changes. But I wouldn’t hold my breath as to “when”, and on the “how” side I’d say it’s pretty much undefined.
I’m not working on it at the moment… However I’m expending background cycles working out how to do it!
Thanks for the update. For me (now that I migrated to Google Drive, which has proper mtime and no silly filename size limits), the major benefit of implementing issue 637 would be exactly the ability to verify MD5 without needing to download the entire file.