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<h1>krb5_c_prf - Generate enctype-specific pseudo-random bytes.<a class="headerlink" href="#krb5-c-prf-generate-enctype-specific-pseudo-random-bytes" title="Permalink to this headline">¶</a></h1>
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<dt id="krb5_c_prf">
<a class="reference internal" href="../types/krb5_error_code.html#krb5_error_code" title="krb5_error_code">krb5_error_code</a> <tt class="descname">krb5_c_prf</tt><big>(</big><a class="reference internal" href="../types/krb5_context.html#krb5_context" title="krb5_context">krb5_context</a><em> context</em>, const <a class="reference internal" href="../types/krb5_keyblock.html#krb5_keyblock" title="krb5_keyblock">krb5_keyblock</a> *<em> keyblock</em>, <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> input</em>, <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> output</em><big>)</big><a class="headerlink" href="#krb5_c_prf" title="Permalink to this definition">¶</a></dt>
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<tr class="field-odd field"><th class="field-name">param:</th><td class="field-body"><p class="first"><strong>[in]</strong> <strong>context</strong> - Library context</p>
<p><strong>[in]</strong> <strong>keyblock</strong> - Key</p>
<p><strong>[in]</strong> <strong>input</strong> - Input data</p>
<p class="last"><strong>[out]</strong> <strong>output</strong> - Output data</p>
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<p>This function selects a pseudo-random function based on <em>keyblock</em> and computes its value over <em>input</em> , placing the result into <em>output</em> . The caller must preinitialize <em>output</em> and allocate space for the result, using <a class="reference internal" href="krb5_c_prf_length.html#krb5_c_prf_length" title="krb5_c_prf_length"><tt class="xref c c-func docutils literal"><span class="pre">krb5_c_prf_length()</span></tt></a> to determine the required length.</p>
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