Table 1 Used notations
From: TSME: a trust-based security scheme for message exchange in vehicular Ad hoc networks
Notations | Meaning |
|---|---|
\(Pr_{v_{i}}\) | The private key of vehicle \(v_{i}\) |
\(Pu_{v_{i}}\) | The public key of vehicle \(v_{i}\) |
\(M_{b}\) | The beacon message |
\(M_{ack}\) | The acknowledgment message |
E | An encryption function |
\(sign_{M}\) | The signature generated for a given message M. |
It is calculated by encrypting the message using the encryption function E and the private key \(Pr_{v_{i}}\) | |
\((x_{i},y_{i})\) | The position of vehicle \(v_{i}\) |
\(G_{id}\) | A group identifier |
\(GH_{id}\) | The identifier of the Group-Head |
ts | A timestamp |
\(MP_{TA}\) | The public key of the trusted authority |
\(L_{c}\) | Location closeness |
\(T_{c}\) | Time closeness |
\(F_{c}\) | Number of forwarders |
\(Tab_{N}\) | The neighbors table |
\(rep_{v_{i}}\) | The initial reputation of vehicle \(v_{i}\) |
\(Id_{v_{i}}\) | The identifier of the vehicle \(v_{i}\) |
\(dId_{v_{i}}\) | The identity of the driver of vehicle \(v_{i}\) |
\(s_{v_{i}}\) | The reputation score of vehicle \(v_{i}\) representing its reputation during the setting up phase |
VS | The veracity score representing the trustworthiness of a given message |
\(d_{v_{i}}\) | The direction of vehicle \(v_{i}\) |
\(c_{v_{i}}\) | The manufacturer of vehicle \(v_{i}\) |
\(ph_{v_{i}}\) | The photo of vehicle \(v_{i}\) |
\(p_{v_{i}}\) | The position of vehicle \(v_{i}\) |
\(vel_{v_{i}}\) | The velocity of vehicle \(v_{i}\) |
\(s-flag\) | A state flag set to ‘B’ or ‘H’ to indicate whether a vehicle is Benevolent or Hostile |
\(Verify(sign_{M})\) | A boolean function verifying a signature |