ificate extension values.</p>

<p>X509_get0_subject_key_id() returns the subject key identifier as a pointer to an <b>ASN1_OCTET_STRING</b> structure or <b>NULL</b> if the extension is absent or an error occurred during parsing.</p>

<p>X509_get_proxy_pathlen() returns the path length value if the given certificate is a proxy one and has a path length set, and -1 otherwise.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man3/X509_check_purpose.html">X509_check_purpose(3)</a></p>

<h1 id="HISTORY">HIST