var CAPICOM_CERTIFICATE_FIND_SHA1_HASH = 0;
    var oCerts;
    try {
        oCerts = oStore .Certificates.Find(CAPICOM_CERTIFICATE_FIND_SHA1_HASH, thumbprint);
    } catch(e) {
        oStore.Close();

        alert("Некорректный отпечаток '" + thumbprint + "'");
        return false;
    }


    if (oCerts.Count == 0) {
        oStore.Close();
        alert("Сертификат с отпечатком '"+ thumbprint +"' не найден");
        return false;
    }
    var oCert = oCerts.Item(1);
    try {
        var oSigner = ObjCreator("CAdESCOM.CPSigner");        
    } catch (err) {
        alert('Failed to create CAdESCOM.CPSigner: ' + err.number);
        return false;
    }
    if (oSigner) {
        oSigner.Certificate = oCert;
        oSigner.TSAAddress = 'http://cryptopro.ru/tsp/';
    }
    else {
        alert("Failed to create CPSigner");
        return false;
    }

    var oSignedData = ObjCreator("CAdESCOM.CadesSignedData");
    
    oSignedData.Content = dataToSign;
              
    oSigner.Options = 1; //CAPICOM_CERTIFICATE_INCLUDE_WHOLE_CHAIN
    try {
        
        var signedData = oSignedData.SignCades(oSigner, CADES_BES);

        $('#hdFileBase64').val(signedData);
        
        alert('Данные успешно подписаны на клиентской стороне');

        oStore.Close();

        return true;
    }
    catch (e) {

        oStore.Close();
       
        alert("Не удалось создать подпись из-за ошибки: " + GetErrorMessage(e));

        return false;
    }

CadesSignedData signedData = new CadesSignedData();

signedData.VerifyCades(base64Value, CADESCOM_CADES_TYPE.CADESCOM_CADES_X_LONG_TYPE_1);