In new section PRIVACY-PRESERVING DATA DONATION

- corrected two typos
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Mike McCready 2021-03-05 11:44:53 +01:00
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@ -307,12 +307,12 @@ It must be noted that some of the encounters described above are corner cases. W
## PRIVACY-PRESERVING DATA DONATION
The concept of Privacy-preserving Data Donation (PPDD) addresses the need to gain insight into the effecitveness of the Corona-Warn-App.
The concept of Privacy-preserving Data Donation (PPDD) addresses the need to gain insight into the effectiveness of the Corona-Warn-App.
It consists of two components:
- **Event-driven User Surveys** (EDUS) - allowing users to participate in a survey if they have received a warning about a high-risk encounter.
- **Event-driven User Surveys** (EDUS) - allowing users to participate in a survey if they have received a warning about a high-risk encounter.
Among others, the survey contains questions regarding the user's behavior in the days preceding the warning and about next steps the user might take, such as seeing a doctor, taking a test, etc.
- **Privacy-preserving Analytics** (PPA) - allowing users to share metrics of the risk calculation, test result delivery, and key submission behavior.
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Both EDUS and PPA are separate and optional features that require users to actively opt-in. No data is collected without prior consent and any pending data is discarded once a consent is withdrawn.
A dedicated **CWA Data Donation Server** processes the requests relating to Privacy-preserving Data Donation. Access to the APIs is restricted to the Corona-Warn-App by a concept called **Privacy-preseving Access Control** (PPAC). It requires clients to provide an authenticity proof of the device and of the Corona-Warn-App. The access is denied if the authenticity proof is not valid.
A dedicated **CWA Data Donation Server** processes the requests relating to Privacy-preserving Data Donation. Access to the APIs is restricted to the Corona-Warn-App by a concept called **Privacy-preserving Access Control** (PPAC). It requires clients to provide an authenticity proof of the device and of the Corona-Warn-App. The access is denied if the authenticity proof is not valid.
The authenticity proof is OS-specific and uses native capabilities:
@ -331,4 +331,4 @@ The authenticity proof is OS-specific and uses native capabilities:
The following diagram shows the individual components and their interaction:
![Corona-Warn-App Components](images/solution_architecture/device_attestation.svg "Privacy-preserving Data Donation")
![Corona-Warn-App Components](images/solution_architecture/device_attestation.svg "Privacy-preserving Data Donation")