Argon2 Invalid Hash (mnemnosyne sync)

[Dorian Minors]

Hello,

I've been trying to get my sync server working, and having an odd error related to the password hashing. Exhausted my own debugging skills.

Installed mnemosyne, and running it headless as a sync and web server (error does not change if only running as sync server).

To set username and password, I have tried both to set the variables in config.py and directly in config.db. In either case, sometimes immediately and sometimes after a single successful sync, I get the following error:

```
Traceback (innermost last):

    File "/usr/local/lib/python3.8/dist-packages/Mnemosyne-2.8-py3.8.egg/openSM2sync/server.py", line 312, in put_login

        if not self.authorise(client_info["username"],

    File "/usr/local/lib/python3.8/dist-packages/Mnemosyne-2.8-py3.8.egg/mnemosyne/libmnemosyne/sync_server.py", line 53, in authorise

        ph.verify(hashed_password, password)
     File "/home/dorian/.local/lib/python3.8/site-packages/argon2/_password_hasher.py", line 212, in verify 
        raise InvalidHash()

argon2.exceptions.InvalidHash

```

The password I'm using to try and sync matches what's in config.py/config.db. I have even changed it to e.g. a single letter to be certain.

I have tried this a few times now, completely eliminating the mnemosyne folder and starting fresh, with no success.

I have now exhausted my debugging ability. Any ideas what I've done here?

One thing that might be important is I had to install argon2-cffi to get mnemosyne working on Ubuntu.

Warm regards,

Dorian

[Peter Bienstman]

Hi,

My advice would be to set up a server first using Mnemosyne's GUI, so that the correct hash is generated. Then, you can transfer the hashed password to the headless server. 

Cheers, 

Peter 

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[Dorian Minors]

Evening,

That worked perfectly, thanks.

So the point I was misunderstanding is that the password entered into config.py or config.db had to be the _hashed_ password, not the plaintext.

Warm regards,

Dorian