Nanofocused X-Ray Beam To Reprogram Secure Circuits
CRYPTOGRAPHIC HARDWARE AND EMBEDDED SYSTEMS - CHES 2017(2017)
摘要
Synchrotron-based X-ray nanobeams are investigated as a tool to perturb microcontroller circuits. An intense hard X-ray focused beam of a few tens of nanometers is used to target the flash, EEP-ROM and RAM memory of a circuit. The obtained results show that it is possible to corrupt a single transistor in a semi-permanent state. A simple heat treatment can remove the induced effect, thus making the corruption reversible. An attack on a code stored in flash demonstrates unambiguously that this new technique can be a threat to the security of integrated circuits.
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关键词
X-ray, Flash, EEPROM, RAM, ATmega, Circuit edit, MOS Stuck-At
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