OneLogin_Saml2_Response::validateSignedElements PHP 메소드

    public function validateSignedElements($signedElements)
    {
        if (count($signedElements) > 2) {
            return false;
        }
        $responseTag = '{' . OneLogin_Saml2_Constants::NS_SAMLP . '}Response';
        $assertionTag = '{' . OneLogin_Saml2_Constants::NS_SAML . '}Assertion';
        $ocurrence = array_count_values($signedElements);
        if (in_array($responseTag, $signedElements) && $ocurrence[$responseTag] > 1 || in_array($assertionTag, $signedElements) && $ocurrence[$assertionTag] > 1 || !in_array($responseTag, $signedElements) && !in_array($assertionTag, $signedElements)) {
            return false;
        }
        // Check that the signed elements found here, are the ones that will be verified
        // by OneLogin_Saml2_Utils->validateSign()
        if (in_array($responseTag, $signedElements)) {
            $expectedSignatureNodes = OneLogin_Saml2_Utils::query($this->document, OneLogin_Saml2_Utils::RESPONSE_SIGNATURE_XPATH);
            if ($expectedSignatureNodes->length != 1) {
                throw new Exception("Unexpected number of Response signatures found. SAML Response rejected.");
            }
        }
        if (in_array($assertionTag, $signedElements)) {
            $expectedSignatureNodes = $this->_query(OneLogin_Saml2_Utils::ASSERTION_SIGNATURE_XPATH);
            if ($expectedSignatureNodes->length != 1) {
                throw new Exception("Unexpected number of Assertion signatures found. SAML Response rejected.");
            }
        }
        return true;
    }