US 12,192,349 B2Granted

Unmanned driving information storage and playback method, device and storage medium

AssigneeBlack Sesame Technologies Inc.

InventorKexin He

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Abstract

The application relates to a method, a device and a storage medium for storing and playing back unmanned driving information, wherein the unmanned driving information storage method comprises the following steps of: acquiring a plurality of data signals associated with an abnormal event when the abnormal event of an unmanned vehicle is monitored; calculating a first hash value for each data signal; storing each first hash value and the corresponding data signal as a key value pair in a key value database respectively; generating a first Merkel tree based on each first hash value; and storing the first Merkel tree and critical data signals of the plurality of data signals into a blockchain, and generating corresponding electronic money addresses and transaction timestamps. By this method, the correctness, integrity, fairness, and credibility of abnormal field data can be guaranteed, and too much storage space will not be occupied at the same time.

Claims7

Dependent claims

An unmanned driving information playback method, comprising:

acquiring an electronic money address and a transaction timestamp associated with an abnormal event of an unmanned vehicle;
respectively storing each first hash value and the corresponding data signal as a key value pair in a key value database;
acquiring a first Merkel tree from a blockchain based on the electronic money address and the transaction timestamp;
acquiring a plurality of data signals from a key value database based on a root hash value of the first Merkel tree;
generating a second Merkel tree based on the plurality of data signals;
comparing the second Merkel tree with the first Merkel tree;
acquiring a critical data signal from the blockchain based on the electronic money address and the transaction timestamp when the second Merkel tree is inconsistent with the first Merkel tree;
and
if the second Merkel tree is inconsistent with the first Merkel tree, identifying leaf nodes that are inconsistent with the second Merkel tree to determine tampered data signals among the plurality of data signals.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/686,192Filed 3 Mar 2022
Priority: CN 202110251943.18 Mar 2021
Published: US 2022/0286277 A18 Sep 2022
Granted: 7 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 9/088
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: usage controlling of secret information,…
H04L 9/3239
Using cryptographic hash functions: involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
H04L 9/3236
Including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity…: using…
H04L 9/50
Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols: using hash chains, e.g.…

Family

US 2022/0286277 A1Pre-grant publication · published 8 Sep 2022
US 12,192,349 B2This patent

From the US filing history. Foreign family members aren’t listed.

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