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<a href="https://gitlab.com/dueno">Daiki Ueno</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/1034#note_186108308">lib/nettle/rnd-fips.c</a>:
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<pre style="margin: 0;"> <span id="LC82" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC84" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">get_entropy</span><span class="p">(</span><span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">fips_ctx</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">fctx</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">buffer</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">length</span><span class="p">)</span></span>
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<p dir="auto">Given fctx is thread local, the function should be thread safe. However, it raises another question: if multiple threads are simultaneously retrieve entropy through this function, that would invalidate the continuous check. Maybe we need to add a global storage and control access using a lock.</p>
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