• Cross-CPP Team

How to Share Identifiers and Not Reveal More Than Necessary

The Cross-CPP project defines a new concept of identification services that enable users to share their identity and the identity of related entities with service providers (for example, to be able to get a cheaper vehicle insurance plan if the insurance company is allowed to monitor user’s driving behaviour) but, at the same time, let the user have a full control on the information that does not directly identify an entity (such as a geo-located temperature measurement) but could reveal user’s identity when combined with other data (for example, a regular travel from a distant place in a specific time). The following figure describes an overall schema of the system and positions it in the context of other Cross-CPP modules.

Identification services primarily interact with the CPP Cloud storage and CPP Big data marketplace and interlink the data with additional information. Service providers or, potentially, Cyber-physical products can ask for particular functions by invoking relevant services and reading results. The data access policy is managed by the Cross-CPP Security module but the policy can also specify that the only way a particular service provider could receive a data is in a privacy-aware transformed form (for example, data aggregated for relevant map tiles rather than exact GPS locations).

Similarly, a rule for data filtration can employ a context (by invoking the Context awareness module) to deliver only a relevant subset of the data agreed upon a contract between the data owner (for example, a building operator or a vehicle owner) and a service provider (for example, a weather forecast service asking only for plausible measurements of the outside temperature). The implemented functionality will help Cross-CPP guarantee privacy-aware data sharing in the CPP Big Data Marketplace.

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This project has received funding from the European Union’s Horizon 2020 research and innovation programm under grant agreement No. 780167. This website reflects the views only of the Consortium, and the Commission cannot be held responsible for any use which may be made of the information contained herein.

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