On the Use of Forward Body Biasing to Decrease the Repeatability of Laser-Induced Faults
Résumé
This paper presents a study on the effect of Forward Body Biasing on the laser fault sensitivity of a CMOS 90nm microcontroller. Tests were performed on a register of this target, under several supply voltage and body-bias settings, showing significant laser sensitivity variations. Based on these results, a method which aims at decreasing fault repeatability by using variable supply voltage and body-bias settings is proposed. Finally, tests are performed on an implementation of this method on a temporally redundant AES and the results are presented.
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hal_LAC16_DATE16_On_the_Use_of_Forward_Body_Biasing_to_Decrease_the_Repeatability_of_Laser_Induced_Faults.pdf (563.99 Ko)
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