These days, everything is getting smarter since the internet is so accessible. Smart Cities are expanding quickly as well. Intelligent Transportation Systems (ITS) are among the most crucial components of smart cities. But while making ITS more accurate and more capable people did not pay much attention to users privacy although preserving privacy is a big concern in ITS. In the field of ITS car parking is one of the less secure sector with respect to preserving privacy of the data of vehicle and vehicle owner. Most of the car parking systems collects and stores vehicle and vehicle owner’s personal data. In this work, a parking system has been introduced that preserves the privacy of the vehicle and vehicle owner’s data. The system securely maintains owner and vehicle data by utilizing blockchain and encryption. The system ensures the confidentiality of private data by implementing a comprehensive registration and authentication process. Security analysis demonstrates that proposed system is capable of resisting Man-in-the-middle Attack, Denial-of-service, Dishonest Nodes and 51% of Attack. Performance of the proposed technique has also been analyzed to validate its effectiveness and robustness.