A Double-Layer Blockchain Based Trust Management Model for Secure Internet of Vehicles

. 2023 May 12;23(10):4699. doi: 10.3390/s23104699

Algorithm 1 Message Classification on Type

Input:
$m s g = {m s g_{i}^{1}, m s g_{i}^{2}, \dots, m s g_{i}^{n}, m s g_{j}^{1}, m s g_{j}^{2}, \dots, m s g_{j}^{n}, \dots, m s g_{k}^{m}}$ ,
$T y p e L i s t$ ={ $T y p e L i s t_{1}$ , $T y p e L i s t_{2}$ , …, $T y p e L i s t_{n}$ }.
Output:
$E v a l L i s t = {S u m L i s t_{1}, S u m L i s t_{2}, \dots, S u m L i s t_{n}}$ .
1:
Step 1: Message classification
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for each $m e s s a g e_{k}^{m} \in m s g$ do
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Check the type of message (there is this field in the message);
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Then classify according to the type of $m e s s a g e_{k}^{m}$ ;
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Add $m e s s a g e_{k}^{m}$ to $T y p e L i s t_{n}$ ;
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if $m s g$ == NULL then
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Stop classifying message;
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end if
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end for
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$/ /$ $T y p e L i s t$ is a two-dimensional list;
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Step 2: Message summary list generation
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for each $T y p e L i s t_{j}$ ∈ $T y p e L i s t$ do
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generate a summary of $T y p e L i s t_{j}$ . i.e., TextRank Algorithm.
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add the summary to $S u m L i s t_{i}$ ;
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Generate $E v a l L i s t = {S u m L i s t_{1}, S u m L i s t_{2}, \dots, S u m L i s t_{n}}$ ;
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end for
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send $E v a l L i s t$ to all other RSUs.