Symbol | Description |
| Sensor node ID. |
| Sensor reading of a node |
| A symmetric key between a node |
| A symmetric key between a node |
| Symmetric keys shared between the base station and leaf nodes. |
| Ciphertext generated by a node |
| A nonce transmitted by the base station in a query. |
| A provably secure pseudo random function. |
| A modulus, predefined by the base station. |
| Homomorphic MAC tag generated by a node |
| MAC tag generated by a node |
| A number that represents the child nodes of an intermediate node. |
HDR | Header information that uniquely identifies the node. |