Sensitive geographic data are invaluable assets for the people to whom they belong and their disclosure should be decided by the sovereign data owner (SDO). Due to several high-profile data breaches and business models that commercialize user data, the need for new approaches to geoprivacy and data sovereignty has grown. We propose MapSafe, a client web application that first obfuscates datasets using donut masking or hexagonal binning, separately, and thereafter implements a multi-level encryption scheme that permits SDOs to share the final encrypted volume containing the geospatial information when they choose and at a level of detail which they are comfortable. The authenticity verification of the volume is facilitated by storing the hash value corresponding to the encrypted volume immutably on the Blockchain as a public record. Our approach places geoprivacy under data guardians'’ control, and its integration capabilities promote its adoption in existing and future geospatial web systems.

中文翻译：

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MapSafe：实现地理空间数据主权的完整工具

敏感地理数据对于其所属的人来说是无价的资产，其披露应由主权数据所有者 (SDO) 决定。由于数起备受瞩目的数据泄露事件和将用户数据商业化的商业模式，对地理隐私和数据主权新方法的需求不断增长。我们提出了 MapSafe，这是一个客户端 Web 应用程序，它首先使用圆环掩码或六边形分箱分别对数据集进行混淆，然后实现多级加密方案，允许 SDO 在选择并在某个级别时共享包含地理空间信息的最终加密卷他们感到舒适的细节。通过将与加密卷相对应的哈希值作为公共记录不可篡改地存储在区块链上，可以促进卷的真实性验证。