 parameter is the initial value for the CBC mode;
   it is ignored for ECB.
   It is clipped or padded with zeroes if not exactly block size.
   It defaults to all zeroes in the functions without this parameter.
  </p></div><div class="sect2" id="PGCRYPTO-RANDOM-DATA-FUNCS"><div class="titlepage"><div><div><h3 class="title">F.28.5. Random-Data Functions <a href="#PGCRYPTO-RANDOM-DATA-FUNCS" class="id_link">#</a></h3></div></div></div><a id="id-1.11.7.38.11.2" class="indexterm"></a><pre class="synopsis">
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