AESSM4 reconfigurable S box replacement circuit resistant to zero value attack

The invention discloses an AESamp capable of resisting zero value attack. The SM4 reconfigurable S box circuit is characterized by comprising a front affine unit, a first selector, an anti-zero power consumption attack inversion circuit with a mask, a first mask correction unit, a rear affine unit, an affine unit, a second mask correction unit and a second selector. According to the S box structure resistant to the differential power consumption attack, the input of the S box structure is provided with a mask, an inversion circuit structure resistant to the zero value power consumption attack and a zero value detection circuit are provided, under the condition that the input is provided with the mask, non-zero value inversion can still be converted into non-zero value inversion, obvious power consumption difference caused by zero value inversion is effectively prevented, and the reliability of the S box structure is improved. And the zero-value power consumption attack can be resisted while the differential p