A Blockchain-Enabled Secure Digital Twin Framework for Early Botnet Detection in IIoT Environment

. 2022 Aug 16;22(16):6133. doi: 10.3390/s22166133

Algorithm 3 Device Isolation

Input:

P r o f_{D T}, D T_{n}, {Cert}_{DT}

D T_{p r v K}

D T_{p u b K}

, Security Vendor

Begin:
$Revoke D T_{n}$ :
$for (DT = 1 to D T_{n}$ ) do
Encrypt DT Certificate
$Encrypt {Cert}_{DT}$ with $D T_{p r v K}$
$D T_{n} (D T_{p r v K} ({Cert}_{DT}$ )) → Blockchain

Decrypt and Verify DT Certificate
$if D T_{n} (D T_{p u b K} ({Cert}_{DT}$ )) = True
return DT authentication successful
$if D T_{n} (({Cert}_{DT}$ )) = True // Verify if $D T_{n}$ is compromised
$return revoke D T_{n} (({Cert}_{DT}$ ))
$D T_{n} (({Cert}_{DT}$ )) → Blockchain // Record revoked Certificate in Blockchain
else
$return D T_{n} (({Cert}_{DT}$ )) is verified
end if
else
$return {Cert}_{DT}$ not found. Authentication failed
end if
end for
End