function SignCreate(certSubjectName, dataToSign) {
    var oStore = CreateObject("CAPICOM.Store");
    oStore.Open(CAPICOM_CURRENT_USER_STORE, CAPICOM_MY_STORE,
    CAPICOM_STORE_OPEN_MAXIMUM_ALLOWED);

    var oCertificates = oStore.Certificates.Find(
    CAPICOM_CERTIFICATE_FIND_SUBJECT_NAME, certSubjectName);
    if (oCertificates.Count == 0) {
        alert("Certificate not found");
        return;
    }
    var oCertificate = oCertificates.Item(1);

    var oSigner = CreateObject("CAdESCOM.CPSigner");
    oSigner.Certificate = oCertificate;
    oSigner.TSAAddress = "http://cryptopro.ru/tsp/";
    
    var oSignedData = CreateObject("CAdESCOM.CadesSignedData");
    oSignedData.Content = dataToSign;

    try {
        var sSignedMessage = oSignedData.SignCades(oSigner, CADESCOM_CADES_X_LONG_TYPE_1);
    } catch (err) {
        alert("Failed to create signature. Error: " + GetErrorMessage(err));
        return;
    }

    oStore.Close();

    return sSignedMessage;
}

$filename = "text.sig";
$handle = fopen($filename, "rb");
$contents = fread($handle, filesize($filename));
fclose($handle);
$err ='';
$sSignedMessage = $contents;

$CADESCOM_CADES_X_LONG_TYPE_1 = 0x5d;

 $oSignedData = new COM("CAdESCOM.CadesSignedData");
    try {
        $oSignedData->VerifyCades($sSignedMessage, $CADESCOM_CADES_X_LONG_TYPE_1);
    } catch (Exception $err) {
        echo "Failed to verify signature. Error: ".$err;
        return false;
    }
	
	echo ('Подпись верна');
    return true;