/man3/EVP_CIPHER_fetch.html">EVP_CIPHER_fetch(3)</a>, as well as with other functions that take a property query string, such as <a href="../man3/EVP_PKEY_CTX_new_from_name.html">EVP_PKEY_CTX_new_from_name(3)</a>.</p>

<p>To be FIPS compliant, it is mandatory to include <code>fips=yes</code> as part of all property queries. This ensures that only FIPS approved implementations are used for cryptographic operations. The <code>fips=yes</code> query may also include other non-crypto support operations that are 