Exploration of Low-Cost Configurable S-Box Designs for AES Applications

摘要：

Realizing AES in hardware faces increasingly more stringent demands for low cost as well as resisting power attacks. For security consideration,countermeasure power analysis approaches to mask sensitive data are needed. The algebraic masking method to protect AES against power attacks is based on various representations of underlying finite fields.However,implementing the transfer matrices between those fields requires a lot of memory spaces. In this paper,we propose a general method for sharing common subexpressions derived from the algebraic finite fields. Furthermore,we present a randomly configurable architecture for protecting SubByte transformation. Analytical results show that the proposed subexpression sharing method can significantly reduce up to 68. 75％ of memory requirement compared with individual implementations.

作者: Jun-Hong Chen Sue-Jing Huang Wen-Ching Lin Yung-Kuei Lu Ming-Der Shieh

作者单位: Department of Electrical Engineering,National Cheng Kung University No.1,Ta-Hsueh Road,Tainan 70101,Taiwan

会议类型: 国际会议

会议名称: The 2008 International Conference on Embedded Software and Systems Symposia(ICESS 2008)(2008国际嵌入式系统及嵌入式软件会议)

会议地点: 成都

会议语种:英文

页码: 422-428

在线出版日期: 2008-01-01（万方平台首次上网日期，不代表论文的发表时间）