Patent ID: 11945464
Assignee: EAST CHINA NORMAL UNIVERSITY
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 4:
5. The method for assessing SOTIF of autonomous driving based on DAG block chain according to claim 1, wherein in the step 2, the TX is preconnected to the DAG chain after being created during the transaction verification, and at this time, the TX has not verified designated parent transactions on the chain, such TX is referred as a Tip; after the TX is preconnected to the DAG chain, two designated parent transactions are selected for verification, the TX is formally connected to the DAG chain upon successful verification, waiting for subsequent child transactions to access and verify the TX; the hash values of the first two transactions verified by the transaction are calculated from hash values of the two parent transactions of the transaction; during the transaction verification, the hash values and signatures of the parent transactions are verified, and subsequent to the verification, the combination of the hash values of the two parent transactions that pass the verification are calculated and stored as a Prehash;
an equation for calculating the Prehash is

Prehash=Hash(Thash1∥Thash2);

an equation for calculating the Thash is Thash=Hash(TX); and
the Thash1 and the Thash2 are the hash values of the two parent transactions, respectively.