Table 1 Notations and descriptions
From: A secure billing protocol over attribute-based encryption in vehicular cloud computing
Notation | Description |
|---|---|
\( \mathbb {G} \) | Elliptic curve group with the same order q |
\( P \in \mathbb {G}\) | A generator of \(\mathbb {G}_{1}\) |
sk id ,pk id | private, public key pair of an entity X |
t i | SP’s master secret for each attribute i |
amk | SP’s attribute master key |
T i | Public key for each attribute i∈U |
\( alias_{v_{i}}\) | v i ’s pseudonym |
U | Universe of attribute |
Γ | Access tree |
ω | Attribute set |
D | Set of secret share \(D_{leaf_{l}} in \Gamma \) |
SF j | Service file |
AT j | Access tree corresponding to SF j |
Enc k (.) | Symmetric encryption under key k |