Professional SAE J2945 DSRC Security Standards Guide
Dedicated Short Range Communications (DSRC) security standards for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication systems, providing comprehensive security services for intelligent transportation systems. Access comprehensive professional guidance for implementing industry-standard DSRC protocols with advanced security compliance and communication excellence.
Standard Overview
Publication Date
2016 (Latest: 2020)
Status
SAE Recommended Practice
Application
DSRC Security Services
Scope
V2V & V2I Communication Security
DSRC Technical Specifications
Frequency Band
5.9 GHz
Dedicated spectrum for Intelligent Transportation Systems (ITS)
Security Protocol
IEEE 1609.2
Security services for applications and management messages
Encryption
ECIES-P256
Elliptic Curve Integrated Encryption Scheme
Digital Signatures
ECDSA-P256
Elliptic Curve Digital Signature Algorithm
Certificate Management
SCMS
Security Credential Management System
Message Latency
< 100ms
Maximum end-to-end message delivery time
Security Features
Message Authentication
Digital signatures ensure message integrity and authenticity, preventing unauthorized message injection and tampering.
- ECDSA-P256 digital signatures
- Certificate-based authentication
- Message integrity verification
- Non-repudiation support
Privacy Protection
Pseudonymous certificates and privacy-preserving mechanisms protect vehicle and driver privacy while maintaining security.
- Pseudonymous certificates
- Certificate rotation
- Location privacy protection
- Anonymous authentication
Replay Attack Protection
Timestamp validation and sequence numbers prevent replay attacks and ensure message freshness.
- Timestamp validation
- Message sequence numbers
- Freshness verification
- Duplicate detection
Secure Key Exchange
Robust key management and distribution mechanisms ensure secure communication channel establishment.
- ECIES encryption
- Key derivation functions
- Secure key distribution
- Forward secrecy
Frequently Asked Questions
What is SAE J2945?
SAE J2945 is a series of standards that define security services for Dedicated Short Range Communications (DSRC) applications, including vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication systems. This standard complements IEEE 1609.2 security protocols and follows FCC Part 95 regulations for optimal RF performance and security compliance.
What frequency band does SAE J2945 use?
SAE J2945 operates in the 5.9 GHz frequency band, specifically allocated for Intelligent Transportation Systems (ITS) and DSRC applications according to ITU-R M.1453 recommendations and ETSI EN 302 571 harmonized standards for vehicular communications.
How does SAE J2945 apply to motorcycle security?
SAE J2945 provides the security framework for advanced motorcycle communication systems, enabling secure vehicle-to-vehicle communication, infrastructure connectivity, and enhanced security protocols for smart key systems following ISO 21217 ITS station architecture and SAE J2735 message set dictionary standards.
What are the main security features of SAE J2945?
SAE J2945 includes message authentication, digital signatures, certificate management, secure key exchange protocols, and protection against replay attacks and message tampering per NIST SP 800-56A key agreement standards and FIPS 186-4 digital signature specifications.