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InfoResearchPeer-reviewed

Practical Differential Fault Attacks on the GPRS Standard Ciphers

Published
Record updated

Summary

Researchers present the first differential fault attack on GEA-like stream ciphers under the random fault model, applied to the GPRS standard ciphers GEA-1 and GEA-2. Their dedicated algorithm locates the exact fault position, recovering the 64-bit secret keys with time complexities of 2^33.807 for GEA-1 and 2^33.858 for GEA-2. Simulated attacks on ChipWhisperer Lite show both ciphers can be broken within sixteen minutes on a common laptop.

Mitigation

Finally, the possible countermeasures are presented to protect the processed data of massive GPRS devices. (The source text does not specify the countermeasures.)