safety security
The Sensor Reading Skips Untrusted Memory
SensorGuard-RV authenticates samples in fixed-function hardware and decrypts them directly into a RISC-V register.
Summary
SensorGuard-RV authenticates samples in fixed-function hardware and decrypts them directly into a RISC-V register.
A write-once ownership switch hands the sensor to a controller whose key is inaccessible to software. A new instruction verifies tags and rejects replays, including across resets, before placing data in a CPU register. On an FPGA implementation with an accelerometer, a protected sample arrives in 51.9 microseconds and the loop sustains 19,015 transactions per second, 5.3 percent above the software-driven SPI baseline. Added logic and estimated power remain material tradeoffs.
Why it matters
SensorGuard-RV authenticates samples in fixed-function hardware and decrypts them directly into a RISC-V register.
Limits and context
- Added logic and estimated power remain material tradeoffs.
Key claims
SensorGuard-RV authenticates samples in fixed-function hardware and decrypts them directly into a RISC-V register.
Qualification: Added logic and estimated power remain material tradeoffs.
Evidence: source-2026-11-06-014
Sources
- arXiv preprint 2611.08380, original v1arXiv · primary research
Corrections
No corrections have been recorded for this story.