This paper is a merge of <a href="https://eprint.iacr.org/2016/1085">ePrint 2016/1085</a> and <a href="https://eprint.iacr.org/2016/1110">ePrint 2016/1110</a>. The code for the Fish and Picnic signature schemes, respectively, can be found in the following repositories:
<ul>
  <li><a href="https://github.com/IAIK/fish-begol">Fish</a></li>
  <li><a href="https://github.com/Microsoft/Picnic">Picnic</a></li>
</ul>