Efficient and Secure Post-Quantum Protected Automotive Systems

The long lifespan of automotive systems demands that current and future threats are considered during the design of automotive security. The foreseeable breakthrough of quantum computers represents a risk for the automotive communication. Thus, the integration of Post-Quantum Cryptography (PQC) is mandatory. Lattice-based PQC is an attractive alternative for securing automotive systems because it has a good trade-off between performance and key sizes. In this work, we integrate the post-quantum public-key encryption and key encapsulation scheme ThreeBears into a microcontroller specially designed for the automotive industry. Moreover, we apply optimization techniques on algorithmic and implementation level. Results show that choosing a more powerful Error Correcting Code (ECC) for ThreeBears achieves a failure rate decrease from 2􀀀135 to 2􀀀153 and, alternatively, an increase of the security level from 2141 to 2144. The proposed optimization techniques on implementation level can lead to a performance improvement of 55.98 %.     «

The long lifespan of automotive systems demands that current and future threats are considered during the design of automotive security. The foreseeable breakthrough of quantum computers represents a risk for the automotive communication. Thus, the integration of Post-Quantum Cryptography (PQC) is mandatory. Lattice-based PQC is an attractive alternative for securing automotive systems because it has a good trade-off between performance and key sizes. In this work, we integrate the post-quantum...     »