XMLSecurityDSig::validateDigest PHP Méthode

    public function validateDigest($refNode, $data)
    {
        $xpath = new DOMXPath($refNode->ownerDocument);
        $xpath->registerNamespace('secdsig', XMLSecurityDSig::XMLDSIGNS);
        $query = 'string(./secdsig:DigestMethod/@Algorithm)';
        $digestAlgorithm = $xpath->evaluate($query, $refNode);
        $digValue = $this->calculateDigest($digestAlgorithm, $data, false);
        $query = 'string(./secdsig:DigestValue)';
        $digestValue = $xpath->evaluate($query, $refNode);
        return $digValue == base64_decode($digestValue);
    }