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If you're using an extension or emacs mode (e.g. rcirc) that has auto-login or similar config to store username and password, how do you hide password and/or username info?

I'd like to do something similar to how you put a link to something like a .smbpasswd file in /etc/fstab.

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up vote 3 down vote accepted

The standard Emacs way is to put in .authinfo.gpg

machine www.example.com login itsme password secret

and to encode it using gpg. I didn't test it with rcirc, but both gnus and tramp use it.

You can also put the same information into .authinfo, using only chmod to protect-it, but it won't be as secure.

Reading the source of Emacs auth-source.el show that it can do quite complex thing, in particular, you could use M-x customize-variable auth-sources to choose different way to specify login/mdp to Emacs (including gnome and kde stuff).

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Out of curiosity: do these Emacs extensions require this file to be named .authinfo, or do they accept .netrc as well? Several other Unix tools use ~/.netrc, which has the exact same syntax. –  grawity May 29 '12 at 7:41
    
@grawity: I do not know, but you can create a symbolic link nevertheless. –  choroba May 29 '12 at 8:49
    
You can change the auth-sources Emacs variable to point to the file you use. Its default value is ("~/.authinfo" "~/.authinfo.gpg" "~/.netrc") meaning that .netrc will be looked at. –  Rémi May 29 '12 at 15:47
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