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Matsuda et al. proposed a countermeasure against laser fault injection that uses distributed on-chip sensors. The sensor raises an alarm by detecting an electrical phenomenon caused in conjunction with a bitflip. A cryptographic module can stop releasing a faulty ciphertext by using the alarm. In this paper, security and limitation of the countermeasure by Matsuda et al. is rigorously evaluated. We...
Laser based Fault Injection (LFI) and Electromagnetic Fault Injection (EMFI) are powerful techniques commonly for fault injection against security critical circuits. Since LFI/EMFI creates faults by incurring high energy disturbances, they can be detected in advance by sensing the disturbance using a embedded detector. In this paper, a PLL based sensor system for detecting laser fault injection is...
This paper presents a reactive sensor-based IC countermeasure against a laser-fault injection attack on a cryptographic processor. IC substrate potential bounce due to laser injection is in-situ monitored by distributed 1bit compact comparators to raise the alarm against the attack. Since the laser power to induce fault is very high, the associated substrate bounce is large and wide-spread over a...
As a typical semi-invasive attack against cryptographic primitives, laser fault injection (LFI) has emerged as a serious threat for security ICs. However, very few countermeasures against LFI have been proposed in previous literature. In this paper, a logic-level countermeasure for sensing the malicious laser injection on FPGA is presented. The implemented logic consists of a digital inverter ring...
Electromagnetic injection (EMI) is a powerful and precise technique for fault injection in modern ICs. This intentional fault can be utilized to steal secret information hidden inside of ICs. Unlike laser fault injection, tedious package decapsulation is not needed for EMI, which reduces an attacker's cost and thus causes a serious information security threat. In this paper, a PLL-based sensor circuit...
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