Laser Fault Injection Attacks against Radiation Tolerant TMR Registers

Abstract: Security requirements for the Internet of things (IoT), wireless sensor nodes, and other wireless devices connected in a network for data exchange are high. These devices are often subject to lab analysis with the objective to reveal secret hidden information. One kind of attacks to reveal the cryptographic key is to perform optical Fault Injection attacks. In this work, we investigated the IHP radiation tolerant shift registers built of Triple Modular Redundant flip-flops. In our experiments, we were able to inject different transient faults into TMR registers.