Blockchain-empowered Contact Tracing for COVID-19 Using Crypto-spatiotemporal Information

今年，我们的研究重点是提高时空数据的可信度和改进认证技术。针对民用全球导航卫星系统（GNSS）设备的安全缺陷，开展GNSS欺骗实验。我们的分析导致了创新的策略，可以帮助设备识别GNSS欺骗和获取精确的时空数据。同时，在时空信息认证方面取得进展。认识到安全和准确的地理位置数据的重要性，我们探索了验证其的新方法。我们结合了加密技术、安全传输协议和TEE解决方案来增强时空数据的可靠性和可信度。

This year, our research focused on enhancing the trustworthiness of spatio-temporal data and refining authentication technologies. We addressed the security shortcomings of civilian Global Navigation Satellite System (GNSS) devices by conducting GNSS spoofing experiments. Our analyses led to innovative strategies that could assist devices in identifying GNSS spoofing and acquiring precise spatio-temporal data.Simultaneously, we made advancements in spatio-temporal information authentication. Recognizing the importance of secure and accurate geolocation data, we explored new approaches for its validation. We incorporated cryptographic techniques, secure transmission protocols, and TEE solutions to augment the reliability and trustworthiness of spatio-temporal data.