rules

firestore.rules

function isValid() {
  return (
    isSpecifiedUser() ||
    (
      request.resource.data.privateKey1 == resource.data.privateKey1 &&
      request.resource.data.privateKey2 == resource.data.privateKey2 &&
      'publicKey' in request.resource.data
    ) 
  ) && (
    request.resource.data.keys().hasOnly(['privateKey1', 'privateKey2' 'publicKey'])
  )
}