VIDER-FIPS(7)</a> and <a href="../man7/fips_module.html">fips_module(7)</a>.</p>

<h2 id="Legacy-provider">Legacy provider</h2>

<p>The legacy provider is a dynamically loadable module, and must therefore be loaded explicitly, either in code or through OpenSSL configuration (see <a href="../man5/config.html">config(5)</a>). It contains algorithm implementations that are considered insecure, or are no longer in common use such as MD2 or RC4. Should it be needed (if other providers are loaded and offer implem