99         $xpath = new \DOMXPath($dom);
101         $curve = self::loadCurveByParam($xpath);
103         $pubkey = self::query($xpath, 'publickey', 'Public Key is not present');
105         $QA = self::query($xpath, 'ecdsakeyvalue')->length ?
106             self::extractPointRFC4050($xpath, $curve) :
123     private static function query($xpath, $name, $error = null, $decode = true)  argument
130         $result = $xpath->query($query);
153         $xpath = new \DOMXPath($dom);
154         $nodes = $xpath->query("//*[namespace::*[.='$ns'] and not(../namespace::*[.='$ns'])]");
183     private static function extractPointRFC4050(\DOMXPath $xpath, BaseCurve $curve)  argument
185         $x = self::query($xpath, 'publickey/x');
186         $y = self::query($xpath, 'publickey/y');
210     private static function loadCurveByParam(\DOMXPath $xpath)  argument
212         $namedCurve = self::query($xpath, 'namedcurve');
228         $params = self::query($xpath, 'explicitparams');
230             return self::loadCurveByParamRFC4050($xpath);
233         $params = self::query($xpath, 'ecparameters');
248                 $result = self::query($xpath, $query);
258         $a = self::query($xpath, 'curve/a', 'A coefficient is not present');
259         $b = self::query($xpath, 'curve/b', 'B coefficient is not present');
260         $base = self::query($xpath, 'base', 'Base point is not present');
261         $order = self::query($xpath, 'order', 'Order is not present');
290     private static function loadCurveByParamRFC4050(\DOMXPath $xpath)  argument
299                 $result = self::query($xpath, $query);
309         $a = self::query($xpath, 'curveparamstype/a', 'A coefficient is not present', false);
310         $b = self::query($xpath, 'curveparamstype/b', 'B coefficient is not present', false);
311 …$x = self::query($xpath, 'basepointparams/basepoint/ecpointtype/x', 'Base Point X is not present',…
312 …$y = self::query($xpath, 'basepointparams/basepoint/ecpointtype/y', 'Base Point Y is not present',…
313         $order = self::query($xpath, 'order', 'Order is not present', false);