Some methods may involve receiving, at a first node of the health network, encrypted sensor data from one or more sensors. The first node may be in a data communication path between the one or more sensors and other nodes of the health network. The method may involve decrypting, by the first node of the health network, only a portion of the encrypted sensor data, and transmitting the encrypted sensor data from the first node of the health network to a second node of the health network. The first node may be a gateway device. In some examples, the second node may be able to decrypt more of the encrypted sensor data than the first node.