>>>>> In <ilu64umn471.fsf@latte.josefsson.org> 
>>>>>	Simon Josefsson <jas@extundo.com> wrote:
> Daiki Ueno <ueno@unixuser.org> writes:

> > I'm not sure that the micalg= parameter is still mandatory, while the
> > hash algorithm used is embedded in OpenPGP packets.

> Sadly RFC 1847 require the presence of micalg, it seems.  A wart, but
> difficult to fix at this point.  We should populate it with correct
> information.

> > It can be obtained by using the builtin packet parser (pgg-parse),
> > without depending on --status-fd output of GnuPG.

> Very nice!  Would you mind proposing a patch for mml2016.el that uses
> this approach?

No, I made the patch attached below.

I'm sending this mail with DSA & RIPEMD160.  If the patch works as
expected, micalg=ripemd160 appears in the Content-Type: header.