Abstract:DPA is widely used in the present as a new type of password attack technology,especially the most widely used glitch attack,which can break a large number of existing password program. In this paper,to resist DPA attacks especially glitch attacks,a new password structure of a low-consumption S-box based on AES was constructed by converting inputs into the composite field for seeking inverse,and converting them back to finite field for outputs.Then based on the idea of secret sharing,a new one was obtained by grouping S-box through the steps of affine transformation,inversion transformation and inverse-affine transformation.Compared to the classical scheme proposed by Nikova Svetla,the occupied space and consumption were reduced by using the method of correction terms.The analysis and experiments showed that the proposed scheme has better consumption characteristics,and the same level of resistance for first order DPA attack and glitch attack compared with the scheme of Nikova Svetla.