Temporary exposure keys upload

Once the user is diagnosed with Covid-19 they can share their Temporary Exposure Keys(TEK) to inform others, with whom they had contact with, about potential exposition to virus.

Steps:

• User diagnosed with Covid-19 is given a unique 6-character code (PIN) from the authority employee
• User enters the code and agrees for TEK upload (PWA module)
• PWA module notifies native code through JS bridge that provided PIN should be used for TEKs upload
• Exposure Notification Framework asks the user for a permission to share TEK with ProteGo Safe App
• The app checks if 6-character code is valid by requesting ProteGo Safe server for a Token (proper Firebase Cloud Function is called with PIN as a payload):
  • UseCase: UploadTemporaryExposureKeysUseCase
  • Repository function: CloudRepository.getAccessToken(pinItem: PinItem)
  • Repository implementation: FirebaseCloudRepositoryImpl.getAccessToken(pinItem: PinItem)
• The app generates Verification Payload(VP) using SafetyNet Attestation API. It helps to determine whether the server is interacting with a genuine app.
  • UseCase: GetSafetyNetAttestationTokenUseCase
  • Manager function: SafetyNetAttestationWrapper.attestFor(keys: List, regions: List)
  • Manager implementation: SafetyNetAttestationWrapperImpl.attestFor(keys: List, regions: List)
• The app generates Upload Request Payload(URP) with the following data:
  • array of Temporary Exposure Keys
  • Token
  • Verification Payload
  • Platform name("Android")
  • Region("PL")
  • App package name("pl.gov.mc.protegosafe")
• The app uploads URP to ProteGo Safe server with a proper Firebase Cloud Function
  • UseCase: UploadTemporaryExposureKeysUseCase
  • Repository function: CloudRepository.uploadTemporaryExposureKeys(requestData: TemporaryExposureKeysUploadRequestData)
  • Repository implementation: FirebaseCloudRepositoryImpl.uploadTemporaryExposureKeys(requestData: TemporaryExposureKeysUploadRequestData)