APPARATUS AND METHOD FOR GUARANTEEING INTEGRITY OF REAL-TIME VEHICLE DATA AND VEHICLE BLACK BOX SYSTEM USING THE SAME

• US 20120222130A1
• Filed: 03/30/2010
• Published: 08/30/2012
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Anastasis Company Limited
• Original Assignee: Anastasis Company Limited
• Inventors: Lee, Dong-Hoon, Kim, Yun-Gyu, Kim, Bum-Han
• Granted Patent: US 8,973,152 B2
• Time in Patent Office: Days
• US Class Current: 726/27
• CPC Class Codes: G07C 5/085 using electronic data carriers
• CPC Class Codes: G07C 5/0858 wherein the data carrier is removable
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/321 involving a third party or a trusted authority
• CPC Class Codes: H04L 9/3236 using cryptographic hash functions

Abstract

A vehicle black box technique guarantees the integrity of vehicle data stored in a black box in real time by forming input data streams as block data and performing a signature using a signing key and nested hashing. Each vehicle black box includes a reliable unique signing key supporting a non-repudiation function. An error correction function is provided by a unique algorithm for generating integrity verification data even when an error occurs from the vehicle data.

Claims

1. An apparatus for guaranteeing integrity of real-time vehicle data, comprising:

a data blocking unit for dividing input data streams about sensing information of a vehicle into block data of a predetermined size;

an initial authentication data (IAD) generating unit for generating IAD by signing initial block data of the input data streams by a signing key;

a first hashing unit for generating a first hash value of each of the divided block data in order, the first hashing unit generating a first hash value of the present block data by concatenating and hashing a value of the present block data and a first hash value of a previous block data; and

a second hashing unit for generating a second hash value by hashing the first hash value of the present block data and outputting the second hash value as integrity verification data of the present block data,

wherein the first hashing unit uses the IAD value as the first hash value of the initial block data.

2. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 1, wherein the IAD generating unit generates the IAD by using a signing key issued from a third trust party.

3. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 2, wherein the IAD generating unit is implemented as a smart card which includes the signing key and guarantees the security of the signing key.

4. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 3, wherein the IAD generating unit includes a memory unit storing the signing key and the generated IAD.

5. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 1, further comprising a first storing unit for storing the first hash value generated by the first hashing unit, and

wherein the first hashing unit generates a first hash value of the present block data by using a first hash value of a previous block data, stored in the first storing unit.

6. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 5, wherein the first storing unit stores the IAD value as the first hash value of the initial block data.

7. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 6, wherein, in case of storing the first hash value of the present block data, the first storing unit deletes the first hash value of the previous block data.

8. The apparatus for guaranteeing integrity of real-time vehicle data according to claim 1, further comprising a second storing unit for storing integrity verification data of each block data, output by the second hashing unit.

9. A method for guaranteeing integrity of real-time vehicle data, in which a vehicle black box collecting and storing vehicle data of sensing information of a vehicle guarantees integrity of the vehicle data in real time, the method comprising:

a blocking data step for dividing input data streams about the sensing information of a vehicle into block data of a predetermined size;

an initial authentication data (IAD) generating step for generating IAD by signing initial block data of the input data streams by a signing key;

a first hashing step for generating a first hash value of each of the divided block data in order, wherein a value of the present block data and a first hash value of a previous block data are concatenated and hashed to generate a first hash value of the present block data; and

a second hashing step for generating a second hash value by hashing the first hash value of the present block data and outputting the second hash value as integrity verification data of the present block data,

wherein, in the first hashing step, the IAD value is used as the first hash value of the initial block data.

10. The method for guaranteeing integrity of real-time vehicle data according to claim 9, wherein, in the IAD generating step, the IAD is generated by using a signing key issued from a third trust party.

11. The method for guaranteeing integrity of real-time vehicle data according to claim 9, further comprising:

a first storing step for storing the first hash value generated by the first hashing,

wherein, in the first hashing step, the first hash value of the present block data is generated by using a first hash value of a previous block data.

12. The method for guaranteeing integrity of real-time vehicle data according to claim 11, wherein, in the first storing step, the IAD value is stored as the first hash value of the initial block data.

13. The method for guaranteeing integrity of real-time vehicle data according to claim 12, wherein, in the first storing step, in the case where the first hash value of the present block data is stored, the first hash value of the previous block data is deleted.

14. The method for guaranteeing integrity of real-time vehicle data according to claim 9, further comprising:

a second storing step for storing integrity verification data of each block data, output by the second hashing step.

15. A computer-readable recording medium where a program for executing the method according to claim 9 in a computer is recorded.