/b> indicates, whether the verification of the certificate in question was passed (preverify_ok=1) or not (preverify_ok=0). <b>x509_ctx</b> is a pointer to the complete context used for the certificate chain verification.</p>

<p>The certificate chain is checked starting with the deepest nesting level (the root CA certificate) and worked upward to the peer&#39;s certificate. At each level signatures and issuer attributes are checked. Whenever a verification error is found, the error number is stored in <b>x