Tracking the Insider Attacker: A Blockchain Traceability System for Insider Threats

. 2020 Sep 16;20(18):5297. doi: 10.3390/s20185297

Algorithm 4 Algorithm for store traceability data.

Require: traceability data: TD, fixed time: T

1:
TD was generated on the participation node.
2:
Diffp(TD) ← Differential privacy processing of TD.
3:
[Diffp(TD), hash(TD)] ← Hash TD to form private-chain TD data.
4:
Sign(TD); [Sign(Diffp(TD)), hash(TD)] ← User signature.
5:
Tx = [Txhash, BH, SN, FROM, TO, NSign, TS, Sign(Diffp(TD)), hash(TD)] ← Generate transaction.
6:
while Every T time do
7:
send(Tx) to MNode ← PNode Send Tx to its MNode to which it belongs.
8:
send(TD) to MNode ← PNode Send TD to its MNode to which it belongs.
9:
if hash(TD) = Tx.hash(TD) then
10:
Put Tx into txpool; Put TD into tdpool ← Put Tx and TD into the buffer pool and wait for block generation.
11:
else
12:
$c o n t i n u e$ .
13:
end if
14:
end while