Re: hashcash

[Simon Josefsson <jas@extundo.com>]

asjo@koldfront.dk (Adam Sjøgren) writes:

> I'm not sure that the checking of a hashcash in contrib/hashcash.el
> does - can anyone confirm/deny this?

I haven't tried it.

> From stepping through hashcash-verify-payment, I think the included
> patch is needed.
>
> (An example: the token:
> "1:20:040926:asjo@koldfront.dk::e9a9d8c29f7c1806:ea6e" is split on
> ":", and the key should be my email-adresse (number 3, zero-indexed
> counting, not number 2) - hashcash.el seems to not know about the
> bit-field ('20' in the example)...)
>
> Someone who know this better should probably say whether it's okay...
> it would probably be better to fix hashcash-version if the version 1.2
> that is referred to in hashcash.el is in use (hashcash.org doesn't
> mention that format).

I think your string is a new format, not supported by hashcash.el.  Is
your format supported by SpamAssassin?  Do you know of a reference to
the new format?  Maybe we can fix hashcash.el to support it as well.

I'm CC:ing Paul Foley in case he knows more of the new format.  Btw,
Paul, have you assigned the copyright of hashcash.el to the FSF?  Are
you willing to do so?  I think it would be useful to move hashcash.el
from contrib/ to lisp/, but we can't do that unless papers are signed.