() retrieve the current security level.</p>

<p>SSL_CTX_set_security_callback(), SSL_set_security_callback(), SSL_CTX_get_security_callback() and SSL_get_security_callback() get or set the security callback associated with <b>ctx</b> or <b>s</b>. If not set a default security callback is used. The meaning of the parameters and the behaviour of the default callbacks is described below.</p>

<p>SSL_CTX_set0_security_ex_data(), SSL_set0_security_ex_data(), SSL_CTX_get0_security_ex_data() and SSL_get0_security_