/// <summary>
/// Get any critical extensions.
/// </summary>
/// <returns>A sorted list of critical entension.</returns>
public SortedList getCriticalExtensionOIDs()
{
if (xStruct.getVersion() == 3)
{
SortedList set = new SortedList();
X509Extensions extensions = xStruct.getTBSCertificate().getExtensions();
if (extensions != null)
{
IEnumerator e = extensions.oids();
while (e.MoveNext())
{
DERObjectIdentifier oid = (DERObjectIdentifier)e.Current;;
X509Extension ext = extensions.getExtension(oid);
if (ext.isCritical())
{
set.Add(oid.getId(), ext);
}
}
return(set);
}
}
return(null);
}