Security
2024-09-18 21:34:26 0 举报
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Security
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MFA
Authentication
Privilege Control
Authorization
Desensitize PII information
Logging
Data breach
Monitoring
Encryption
Storage time expiration
Storage
Software Application
HSM
SE
HMAC (Hashed Message Authentication Code) can be implemented to ensure data integrity and authentication between ECUs
Use CANcrypt: A lightweight protocol that provides authentication and encryption for CAN communication.
CAN GatewayProblem: The open nature of the CAN bus makes it easy for attackers to access it once they physically connect to the vehicle’s network.
CAN IDS can be signature-based (detecting known attacks) or anomaly-based (identifying deviations from normal traffic behavior).
Intrusion Detection Systems (IDS)Problem: CAN does not have built-in mechanisms to detect abnormal traffic or malicious activity.
Use rate limiting to prevent any node from flooding the bus with messages.
Implement message filtering at the ECU level or in the CAN gateway to drop suspicious or irrelevant messages before they reach the critical components.
Can Security
Implement MACsec (Media Access Control Security) at the data link layer for encryption and authentication of Ethernet frames. MACsec secures point-to-point Ethernet connections and is highly efficient for in-vehicle networks.
Use Secure Over-the-Air (SOTA) or Firmware Over-the-Air (FOTA) updates with encryption and digital signatures to protect against tampering during software updates.
Deploy firewalls at the gateway level to filter unauthorized or malicious traffic. The firewall can enforce access control lists (ACLs) that only allow legitimate traffic to pass through.
Implement an Intrusion Detection System (IDS) or Intrusion Prevention System (IPS) that can analyze Ethernet traffic and detect suspicious behavior. This system can alert you to potential breaches and even take preventive actions (in the case of IPS) by dropping malicious packets or blocking unauthorized devices.
Use Network Access Control (NAC) mechanisms to authenticate and authorize devices before allowing them access to the Ethernet network. NAC ensures that only trusted ECUs or external devices (such as diagnostics tools) can connect to the vehicle’s Ethernet network.
IEEE 802.1X and MACsec: These standards help secure Ethernet-based communication in vehicles through authentication and encryption.
Standards and Guidelines
Security Architecture
Focus: Functional safety of electrical and electronic systems in road vehicles.
Purpose: Ensures that vehicle systems behave safely even if there are hardware or software malfunctions. It's all about managing the risk of failures and preventing accidents due to system faults.
ISO 26262: Functional Safety
Focus: Cybersecurity for road vehicles.
ISO/SAE 21434: Cybersecurity
Regulations
In Vehicle
Security
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