A Secure dToF LiDAR SoC with Dual-Domain Fingerprinting and Event-Driven AFE Circuit Achieving Sensor-Level Attack Resilience
First dToF LiDAR SoC with dual-domain fingerprinting rejects spoofed laser echoes, protecting 73% of the point cloud versus 0% unprotected.
The paper presents the first direct time-of-flight LiDAR system-on-chip with integrated hardware defenses against spoofing, where injected high-frequency laser pulses can erase pedestrians from point clouds. Dual-Domain Fingerprinting (DDF) randomizes laser pulse-pair time intervals and amplitude ratios and authenticates echoes in this 2D space before they corrupt ranging results. An event-driven AFE with a triggered 1-GHz ADC achieves 1-cm resolution and 99% ADC power reduction; a 16-channel 65-nm CMOS prototype reaches 120-m ranging at 3.1 mW per channel AFE power. In a proof-of-concept on measured sensor data, DDF protects 73% of the point cloud under spoofing attack versus 0% without it.
- First dToF LiDAR SoC with sensor-level anti-spoofing hardware security
- DDF randomizes pulse-pair timing and amplitude ratio, rejecting spoofed echoes pre-ranging
- Event-driven AFE achieves 1-cm resolution with 99% ADC power reduction
- 65-nm CMOS 16-channel prototype: 120-m ranging, 3.1 mW/channel AFE, 60% below prior art
- Proof-of-concept protects 73% of point cloud under spoofing, versus 0% without DDF
From the original article
1 min read at arxiv.orgRecent studies have shown that most commercial direct time-of-flight (dToF) LiDARs can be spoofed by injecting high-frequency laser pulses into the receiver, which can erase pedestrians from the point cloud. This paper presents the first dToF LiDAR system-on-chip (SoC) with integrated sensor-level hardware security against spoofing attacks.
By Risa Nonaka · arxiv.org
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