an class="kd">private</span> <span class="kd">static</span> <span class="k">let</span> <span class="nv">keyMaterialSeed</span> <span class="o">=</span> <span class="s">"WhisperMessageKeys"</span><span class="o">.</span><span class="nf">data</span><span class="p">(</span><span class="nv">using</span><span class="p">:</span> <span class="o">.</span><span class="n">utf8</span><span class="p">)</span><span class="o">!</span></code></pre>

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