Migrating from Paperless with encryption enabled

[jat255]

I was a once-contributor to the original Paperless project, and have finally started to explore paperless-ng (which looks great!). I'm having a bit of trouble trying to migrate my existing document library, which has encryption enabled. As far as I can tell, support for encryption was dropped in Paperless-NG (which I totally understand). Is it still possible to migrate a library if encryption was enabled?

My prior install was on bare metal (actually in an LXC container, but basically the same thing), and I've switched to Docker since it appears that's the primary supported method for Paperless-NG. I've got things starting up correctly, and have copied all the original folders (data, media, etc.) into the new Docker volume (and set PAPERLESS_PASSPHRASE in my docker-compose.env), but when I run

$ docker-compose run --rm webserver document_index reindex

I get tons of errors about gpg returning a non-zero status:

Running migrations:
  Applying documents.1003_mime_types...
[2021-07-04 23:16:00,410] [WARNING] [gnupg] gpg returned a non-zero error code: 2
[2021-07-04 23:16:01,491] [WARNING] [gnupg] gpg returned a non-zero error code: 2
[2021-07-04 23:16:03,061] [WARNING] [gnupg] gpg returned a non-zero error code: 2
[2021-07-04 23:16:05,319] [WARNING] [gnupg] gpg returned a non-zero error code: 2
... and so on ...

There appears to be one warning like this (I assume) for every file it's trying to index. Perhaps this will all work out fine when it finishes, but this seems like an error.

Is there a better method I should be taking?

---

Following up, this was the resulting error:

ERRORS:
?:
The current password doesn't match the password of the
existing documents.

If you intend to change your password, you must first export
all of the old documents, start fresh with the new password
and then re-import them."

I copied the PAPERLESS_PASSPHRASE setting directly from my previous paperless.conf to my docker-compose.env file, so I'm not sure why it doesn't like that passphrase...

[jat255]

I was able to work around this by using the document decryption tool from the original paperless:

$ /usr/bin/python3 /home/paperless/paperless/src/manage.py change_storage_type gpg unencrypted

(Note for anyone that runs into this, there was an error for me at line 96 of the decryption tool, and I had to change it to:

if os.path.isfile(path):
    os.unlink(path)

After this, the reindexing worked!