I have really f-d up today.
I wanted to create a new OpenPGP key for me, which would use ECC instead of RSA. So I did it on my offline machine, and then I wanted to move them onto my YubiKey. I tripel-checked that I have the backups of both the new and the old key, and did overwrite keys on my YubiKey.
Well, the backup of the old key was apparently done after such transfer, so now I have basically lost my primary subkeys :blobcatnotlikethis:
I can't decrypt older files and email messages any more, and I can't even add [S] subkeys to the old key because of some weird SHA1 signature that keeps popping up :ablobcatcry:
I've spent the last four hours tinkering with all this, but I think there is no escape and no cure and all is lost, forever :/