.png){kind=icon}
.png){kind=icon}
Return
LQSCPPA: Lightweight and Quantum-Secure Lattice-Based Conditional Privacy-Preserving Authentication Scheme for VANET
.png){kind=icon}
PRE
AI
C
Y
DOI：10.1109/JIOT.2026.3655005.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Vehicular ad hoc network (VANET) is a critical component for intelligent transportation systems, enhancing road safety and traffic management. Considering the openness of wireless channels, reliable authentication schemes have become the primary requirement. However, the existing schemes face the following limitations, including vulnerability to quantum attacks, insecure pseudonym management, key escrow issues, and inefficient tradeoffs between security and efficiency. Therefore, we propose a lightweight and quantum-secure lattice-based conditional privacy-preserving authentication scheme (LQSCPPA). First, through an optimized private key structure and the partial private key mechanism, LQSCPPA achieves highly efficient lattice-based signatures and solves the problem of key escrow. In addition, by utilizing the rejection sampling technology and optimizing the signature construction process, LQSCPPA significantly reduces computation overhead while ensuring security. Meanwhile, by introducing a multimessage aggregate signature algorithm, LQSCPPA enables verifiers to aggregate various signatures into a single signature, which reduces the cost of signature transmission and verification. Moreover, a reasonable dynamic pseudonym mechanism has been built to protect the privacy of vehicles. Security analysis demonstrates that LQSCPPA is secure in the random oracle model. Performance evaluation demonstrates that LQSCPPA achieves excellent performance in computation and communication overhead compared with the other secure schemes.
Keywords:
Conditional privacy-preserving
intelligent transportation
partial private key mechanism
quantum-secure
Journal
IF:
8.9
Papers:
1.4W
Citations:
7.8W
Organization
Cited Papers