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Fully Homomorphic Encryption (FHE) becomes an important encryption scheme in the frame of Cloud computing. Current software implementations are however very slow and require a huge computing power. This work investigates the possibility to accelerate FHE by implementing it in off-the-shelf FPGAs. The focus is on one critical function in the FHE scheme: the polynomial multiplication. In this paper,...
SRAM-based FPGAs are increasingly used in many applications. However, when used in critical embedded systems, their main drawback is the sensitivity of the configuration memory to external perturbations. Configuration errors can lead to erroneous results, but also to function modifications and SEFIs (Single Event Functional Interrupts). Consequences of configuration modifications must therefore be...
Thanks to laser and accelerator tests, we investigated the influence of test patterns regarding both SEU and SEFI radiation sensitivities for several DRAM technology nodes, from 210 to 90 nm. Regarding SEUs, we demonstrated that preponderant physical mechanisms vary with technology nodes, so patterns revealing worst-case SEU sensitivity vary as well. Regarding SEFIs, and in particular SEFLUs (Single...
Due to their reconfigurability and their high density of resources, SRAM-based FPGAs are more and more used in embedded systems. For some applications (Pay-TV,Banking, Telecommunication ...), a high level of security is needed. FPGAs are intrinsically sensitive to ionizing effects, such as light stimulation, and attackers can try to exploit faults injected in the downloaded configuration. Previous...
This paper presents the applications of pulsed laser experiments for testing the reliability of SRAM-based FPGAs regarding natural radiation environment. The final objective is to understand the basement of configuration memory sensitivity and to highlight the testing possibilities provided by laser fault injection in running application. Static (Virtex 2) and dynamic (Virtex 1) experiments are presented.
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