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Two countermeasures against DPA/CPA attacks have been designed, tested and compared on an AES encoding coprocessor implemented on FPGA. Both countermeasures are based on altering the clock signal [5], [6] and can be readily implemented at RTL design stage. Experimental results based on first order CPA attacks confirmed the effectiveness of both the countermeasures in protecting the SBOX output, showing...
An RTL countermeasure intended to protect the AddRoundKey and SubByte steps of the AES algorithm against DPA or CPA attacks has been proposed and tested on an AES encoding coprocessor implemented on FPGA. Experimental results based on first order CPA attacks confirmed the effectiveness of the proposed countermeasure, especially in protecting the SBOX output, showing that even with the acquisition...
A novel RTL countermeasure intended to protect the AddRoundKey step of the AES algorithm against DPA or CPA attacks has been proposed and tested on an AES encoding coprocessor implemented on FPGA. Experimental results based on CPA attacks confirmed the effectiveness of the proposed countermeasure, showing that with 100000 acquired power curves, the absolute value of correlation function is one order...
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