| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an arithmetic circuit to be used for an encryption circuit, and a logical circuit, a read-only memory, a register, and a semiconductor circuit including a plurality of logics, in which confidential data can be prevented from being intercepted by electronic analysis by using simple constitution. <P>SOLUTION: Positive/negative logic mixing data buses 102, 108 included in a multiplication circuit 100 transmit n (n≥2) bit data in which positive logic and negative logic for bit logic are mixed. An addition part 1000 receives data transmitted from the positive/negative logic mixing data buses 102, 108 and performs addition suited to the logic of the positive/negative logic mixing data buses 102, 108. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
