bug#67937: 30.0.50; auth-source-pass relies on epa-file being enabled

[Eli Zaretskii <eliz@gnu.org>]

> From: Arsen Arsenović <arsen@aarsen.me>
> Cc: 67937@debbugs.gnu.org
> Date: Wed, 20 Dec 2023 20:58:08 +0100
> 
> > How can it decrypt the string when you disable decryption?  What is
> > the replacement of epa-file that would decrypt the data string?
> 
> Even with epa-disable, it could use epa-decrypt-region to decrypt the
> password from the file.
> 
> For some context, I'll briefly summarize how password-store (pass)
> works: pass stores credentials as one line representing the secret and
> the rest being aux data (usually usernames and similar) in each file.
> One file represents one set of credentials, encrypted via PGP (an
> example filename is
> ~/.password-store/gentoo/gentoo.org/arsen@gentoo.org.gpg).
> 
> To get a given password from a given password store entry,
> auth-source-pass needs to decrypt this file and get the first line of
> the decrypted contents.
> 
> Currently, auth-source-pass relies on epa-file facilities to decrypt the
> password entries, but those do nothing after epa-file-disable.  Instead,
> it should use something like epa-decrypt-region or such (sorry, not too
> familiar with EasyPG).
> 
> AIUI, epa-file-disable disables *automatic* decryption, not all forms of
> decryption.

Thanks.  So it sounds like you are asking for a feature that currently
doesn't exist, AFAIU.  I added a couple of people to this discussion
who were involved with auth-source-pass, in the hope that they will
have suggestions and comments.