Title:
電子素子及びデータ処理方法
Document Type and Number:
Japanese Patent JP4589327
Kind Code:
B2
Abstract:
An electronic device that defends against an attack trying to identify confidential information from power consumption is provided without any circuit that performs a complementary operation to eliminate bias in power consumption. An elementary device A 100 is formed by a plurality of transistors 101-112. The elementary device A 100 receives inputs signals x 1 , x 2 , a random number r, and a control signal en, and outputs z. The output z is obtained by XORing (x 1 ^r)&(x 2 ^r) with the random number r. After the state transitions of the input signal, x 1 , x 2 , and the random number r, are settled, the control signal en is used to output z. This makes the signal transition rate of the output z equal, thereby defending against an attack trying to identify confidential information from power consumption.
Inventors:
Daisuke Suzuki
Minoru Saeki
Minoru Saeki
Application Number:
JP2006527641A
Publication Date:
December 01, 2010
Filing Date:
July 07, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L9/10
Domestic Patent References:
| JP2005266810A | 2005-09-29 | |||
| JP2000305453A | 2000-11-02 | |||
| JP2000066585A | 2000-03-03 | |||
| JP2002539488A | 2002-11-19 | |||
| JP2002366029A | 2002-12-20 | |||
| JP2005318476A | 2005-11-10 | |||
| JP2005236977A | 2005-09-02 |
Attorney, Agent or Firm:
Shoji Mizoi