Automotive security with Blockchain Technology

Automotive Security with BlockChain
Technology
Project Supervisor:
Dr. N Rukma Rekha
Assistant Professor
School of Computer & Information Sciences
University of Hyderabad
Presented By :
Anil Chuarasiya
15MCMC17
MCA 6th
Semester

Index
●
Blockchain
●
Features of Blockchain
●
Challenges in Conventional Security and Privacy methods
●
Introducing Blockchain for smart vehicle security and privacy
●
BlockChain-Based Architecture
●
Solution for the Conventional Security Methods using Blockchain
●
Validation of New Blocks
●
Remote Software Update
●
Implementation

BlockChain
●
A Blockchain is a continuously growing list of records, called
blocks.
●
In blockchain, blocks are linked with each other and secured with
cryptographic hash algorithm.
●
Each block contains a cryptographic hash of the previous block,
timestamp and transaction data.
●
Once a block is appended in the Blockchain it can not be changed.
Figure 1. Structure of the Blockchain [2].

Features of the Blockchain Technology
●
Increased Capacity
●
Better Security
●
Immutability
●
Faster Settlement

Smart Vehicle
●
The Vehicle capable of sensing its environment and navigating on its own to
reach the destination.

Challenges in Conventional Security
and Privacy methods
●
Malicious entities can compromise with smart vehicle.
●
Conventional security and privacy methods used in smart vehicles tends to be
ineffective due to the following challenges
– Centralization
– Lack of privacy
– Safety Threats

Introducing Blockchain for smart vehicle security and
privacy
●
The main contribution of Blockchain is to present a decentralized privacy-
preserving and secure Blockchain-based architecture for the smart vehicle
ecosystem.
●
Nodes in the overlay are clustered and only the Cluster Heads are responsible
for managing the Blockchain and performing its core functions.
●
Transactions are verified by the OBMs (Overlay Block Manager).
●
To protect user privacy, each vehicle is equipped with an in-vehicle storage to
store sensitive data.

Figure 1: An Overview of the ovderlay. [2]
BlockChain Based Architecture

BlockChain-Based Architecture
●
A public blockchain is managed by the overlay nodes .
●
Each vehicle is equipped with a Wireless Vehicle Interface (WVI).
●
The WVI connects the vehicle to the overlay.
●
The hash of the backup storage is stored in the Blockchain.
●
An OBMs verifies a transaction.

Solution for the Conventional Security Methods
using Blockchain
●
Each node is identified using a Public Key (PK).
●
Every node can verify a transaction, by validating the signature of the
transaction generator against their PK.
●
Transactions, are encrypted and broadcast to the entire network.
●
This ensures that Blockchain can achieve trustless consensus.
●
A node can change its public key after transaction to ensure anonymity and
privacy.

Validation of New Blocks
●
Two types of transactions based on the number of signatures that must be
validated:
– 1) Single signature: “T_ID || P_T_ID || PK || Sig”
– 2) Multisig: “T_ID || P_T_ID || PK.1 || Sig.1 || PK.2 || Sig.2”
●
All transactions are broadcast to all OBMs.
●
An OBM checks the validity of the received transaction by verifying the affixed
signature(s).
●
Each OBM maintains a list of PK pairs which establishes the nodes that are
allowed to communicated with each other.

Remote Software Updates (RSU)
Step 1- Create new software version and update it in cloud storage provided
by OEM.
Step 2- The software provider, sends the resulting multi signature
transaction to its OBMs.
Step 3- OBMs broadcast the transaction.
Step 4- The OBM of the cluster containing the concerned OEM, finds the
match in its key list and thus forwards the transaction to the OEM.

Remote Software Updates continued...
Step 5- the OEM sends the transaction to its OBM which is then broadcast
to all OBMs
Step 6- The OBMs notify their cluster members about the new software
update.
Step 7- The vehicles downloads software directly from cloud storage.
The vehicles will check the integrity of downloaded software.

Figure 2: WRSU process utilizing the blockchain architecture [2].

Creation of first block and calculating the hash of the block

Adding the blocks in blockchain

Software’s signature generation and
Verification

Automotive security with Blockchain Technology

References
1. Satoshi Nakamoto “Bitcoin: A Peer-to-Peer Electronic Cash System”
2008.
1) 2. Ali Dorri,Marco Steger, Salil Kanhere, and Raja Jurdak “Blockchain: A
Distributed Solution to Automotive Security and Privacy” Dec 13, 2017.

Automotive security with Blockchain Technology

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