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提出将掩码和随机延时两种策略综合的方法以增强加密算法的抗攻击性能,同时,提出一种多掩码方案取代传统的单一掩码,进一步增强抵御以汉明重量为模型的能量攻击。此综合策略应用于DES加密设备,结果表明,能够成功抵御105条能量迹攻击,抗攻击性能提高40%。
A method combining mask and random delay is proposed to enhance the anti-attack performance of the encryption algorithm. At the same time, a multi-mask scheme is proposed to replace the traditional single mask to further enhance the resistance to the Hamming weight model attack. The comprehensive strategy used in DES encryption equipment, the results show that the successful defense against 105 energy traces of attack, anti-attack performance increased by 40%.