QStringList temp = str.split(">");
    QString intKey = temp.at(1);
    QString nom = temp.at(2);
    QString prenom = temp.at(3);
    QString adress = temp.at(4);
    QString cp = temp.at(5);
    QString ville = temp.at(6);
    QString tel = temp.at(7);
    QString mail = temp.at(8);
    QString nation = temp.at(9);
    QString dnaiss = temp.at(10);
    QString keyRef = temp.at(11);
    QString id = temp.at(12);
    QString pw = temp.at(13);
    QString question = temp.at(14);
    QString answer = temp.at(15);

    QSqlDatabase DataBase = QSqlDatabase::addDatabase("QMYSQL");
    DataBase.setDatabaseName("my_dev_db");
    DataBase.setHostName("127.0.0.1");
    if(!DataBase.open("root","XXXXXXX"))
    {
        qDebug() << "Connection Database error";
        return "ERROR";
    }

    QSqlQuery q(tr("SELECT * FROM `keys` WHERE iSerial = '%1' AND `key` = '%2'").arg(intKey).arg(keyRef),DataBase);
    if(q.size() != 1){
        qDebug() << "SID non trouvé ou doublon";
        return "ERROR";
    }

    int fieldIdUser = q.record().indexOf("id_user");
    int fieldConnected = q.record().indexOf("connected");
    int fieldKey = q.record().indexOf("key");
    bool *ok;
    QString connectedInt;
    while (q.next()){
        userId = q.value(fieldIdUser).toString();
        connectedInt = q.value(fieldConnected).toString();
        key = q.value(fieldKey).toString();
        qDebug() << tr("%1 state is : %2").arg(key).arg(connectedInt);
    }
    q.clear();
    bool freeKey;
    (userId.toInt() == 0) ? freeKey = true : freeKey = false;
    bool connectedKey;
    (connectedInt.toInt() == 1) ? connectedKey = true : connectedKey = false;
    bool validKey = !key.isEmpty();
    if(freeKey && !connectedKey && validKey){
        //ACTIVATION DE LA CLEF
        QString queryActUser = "UPDATE `keys` SET `nom` = :nom ,`prenom` = :prenom ,`adress` = :adress ,`cp` = :cp ,`city` = :city ,`tel` = :tel ,"
        "`mail` = :mail ,`nation` = :nation ,`birth` = :birth ,`login` = :login ,`pass` = :pass ,`secretQuestion` = :secretQuestion ,"
        "`secretAnswer` = :secretAnswer"
        " WHERE `keys`.`iSerial` = '%1' AND `keys`.`key` = '%2'";

        QSqlQuery *query = new QSqlQuery(DataBase);
        if(!query->prepare(queryActUser.arg(intKey).arg(keyRef))){
            qDebug() << "Activation Query failed to prepare";
        }

        qDebug() << "prepare";
        query->bindValue(":nom", nom, QSql::In);

        query->bindValue(":prenom", prenom, QSql::In);

        query->bindValue(":adress", adress, QSql::In);

        query->bindValue(":cp", cp.toInt(), QSql::In);

        query->bindValue(":city", ville, QSql::In);

        query->bindValue(":tel", tel, QSql::In);

        query->bindValue(":mail", mail, QSql::In);

        query->bindValue(":birth", dnaiss, QSql::In);

        query->bindValue(":nation", nation, QSql::In);

        query->bindValue(":login", id, QSql::In);

        query->bindValue(":pass", pw, QSql::In);

        query->bindValue(":secretQuestion", question, QSql::In);

        query->bindValue(":secretAnswer", answer, QSql::In);

        qDebug() << query->lastQuery();

        if(query->exec() == false){
            qDebug() << "Activation query failed";
            qDebug() << query->lastQuery().toUtf8();
            qDebug() << query->lastError().databaseText();
            return "";
        }
    }else{
        return "";
    }