 title="Fa">their_public_key</var></dt>
  <dd class="It-tag">The public key of the other party.
    <div class="Pp"></div>
    <var class="Fa" title="Fa">raw_shared_secret</var> and
      <var class="Fa" title="Fa">your_secret_key</var> may overlap if your
      secret is no longer required.</dd>
</dl>
<div class="Pp"></div>
Some protocols, such as some password-authenticated key exchange (PAKE)
  protocols and oblivious pseudo-random functions (OPRF), may require
  &#x201C;contributory&#x201D; behaviour, w