I have managed to recover files from a disk with a damaged partition table using photorec. Photorec does not preserve the file name or file structure so all I have are a bunch of randomly named files such as 013892.ecryptfs 02189421.ecryptfs etc.
The original system had an encrypted home folder, and I know the login password. Is there any way to decrypt ecryptfs files?
I had the same problem and I've been able to fix it by following the info provided in this link using the command 'encryptfs-recover-private':
https://forum.cgsecurity.org/phpBB3/viewtopic.php?t=7535
It works well. Just an extra hint; when you perform encryptfs-recover-private specify the directory where your encrypted files are located; otherwise the command will search for the entire partition and very likely it will fail.
Good luck