Fingerprinting: Bounding Soft-Error-Detection Latency and Bandwidth

Abstract

FINGERPRINTING SUMMARIZES THE HISTORY OF INTERNAL PROCESSOR STATE UPDATES INTO A CRYPTOGRAPHIC SIGNATURE. THE PROCESSORS IN A DUAL MODULAR REDUNDANT PAIR PERIODICALLY EXCHANGE AND COMPARE FINGERPRINTS TO CORROBORATE EACH OTHER'S CORRECTNESS. RELATIVE TO OTHER TECHNIQUES, FINGERPRINTING OFFERS SUPERIOR ERROR COVERAGE AND SIGNIFICANTLY REDUCES THE ERROR-DETECTION LATENCY AND BANDWIDTH.