Efficient Signed Certificate Verification for IoT and V2V Messages via Blockchain Integration.

Area of Science:

• Computer Science
• Cryptography
• Network Security

Background:

• Symmetric cryptographic schemes like RSA and ECDSA are computationally intensive, limiting their use in constrained environments like IoT and IoV.
• Existing protocols (TLS, DTLS) require significant cryptographic overhead for digital signatures, impacting performance.

Purpose of the Study:

• To develop a lightweight, blockchain-based framework for public key verification to reduce cryptographic overhead.
• To enhance the efficiency of digital signatures in resource-constrained environments such as IoT and IoV.

Main Methods:

• Utilized the Ethereum blockchain to store and verify public keys for digital certificates.
• Replaced traditional signature decryption with blockchain-based public key verification.
• Supported various certificate formats including PKI/CA (X.509, L-ECQV) and self-signed certificates.

Main Results:

• Achieved a reduction in DTLS handshake time from 12 seconds to under 6 seconds.
• Enabled one-time signature verification with minimal latency in V2V messaging.
• Demonstrated significant performance improvements for mutual authentication in high-density IoT and V2V deployments.

Conclusions:

• The blockchain-based framework offers a viable solution for efficient and secure digital communication in IoT and IoV.
• The proposed method significantly reduces cryptographic overhead and latency, making it suitable for constrained environments.
• Facilitates lightweight certificate management and secure V2V mutual authentication.