I’m running Fedora 32. I have several backup disks which have all been encrypted with cryptsetup and were working fine until a few days ago. Now when I do cryptsetup luksOpen path-to-device name
I get an error that the key is invalid.
No key available with this passphrase.
This happens on all of my backup drives. They’re all different physical drives in separate enclosures. The only commonality is they use serpent-cbc-plain for the cipher. I also tried booting the last kernels in the grub list but cryptsetup luksOpen fails the same way.
When I boot the rescue image I get a message that the cipher isn’t available, I guess the kernel module is not in the rescue image. So I am not able to verify that it is related to kernel level or app level.
I did create a new luks file with the same cipher and hash and I am able to open and close it several times. It suggests some component was updated and broke access to older files.
Any help guys? I have around 3T of data offline now. Thank you. Bill