  <varlistentry>
  <term><emphasis remap='B'>leftrsasigkey</emphasis></term>
  <listitem>
<para>the left participant's
public key for RSA signature authentication,
in RFC 2537 format using
<citerefentry><refentrytitle>ipsec_ttodata</refentrytitle><manvolnum>3</manvolnum></citerefentry>
encoding.
The magic value
<emphasis remap='B'>%none</emphasis>
means the same as not specifying a value (useful to override a default).
The value
<emphasis remap='B'>%dnsondemand</emphasis>
(the default)
means the key is to be fetched from DNS at the time it is needed.
The value
<emphasis remap='B'>%dnsonload</emphasis>
means the key is to be fetched from DNS at the time
the connection description is read from
<emphasis remap='I'>ipsec.conf</emphasis>;
currently this will be treated as
<emphasis remap='B'>%none</emphasis>
if
<emphasis remap='B'>right=%any</emphasis>
or
<emphasis remap='B'>right=%opportunistic</emphasis>.
The value
<emphasis remap='B'>%dns</emphasis>
is currently treated as
<emphasis remap='B'>%dnsonload</emphasis>
but will change to
<emphasis remap='B'>%dnsondemand</emphasis>
in the future.
The identity used for the left participant
must be a specific host, not
<emphasis remap='B'>%any</emphasis>
or another magic value.
The value 
<emphasis remap='B'>%cert</emphasis>
will load the information required from a certificate defined in
<emphasis remap='B'>%leftcert</emphasis>
and automatically define leftid for you.
<emphasis remap='B'>Caution:</emphasis>
if two connection descriptions
specify different public keys for the same
<emphasis remap='B'>leftid</emphasis>,
confusion and madness will ensue.</para>
  </listitem>
  </varlistentry>
