首页> 外国专利> COUNTERMEASURE METHOD AGAINST SIDE CHANNEL ANALYSIS FOR CRYPTOGRAPHIC ALGORITHMS USING BOOLEAN OPERATIONS AND ARITHMETIC OPERATIONS

COUNTERMEASURE METHOD AGAINST SIDE CHANNEL ANALYSIS FOR CRYPTOGRAPHIC ALGORITHMS USING BOOLEAN OPERATIONS AND ARITHMETIC OPERATIONS

机译:基于布尔运算和算术运算的密码算法侧通道分析对策方法

摘要

The present invention relates to a countermeasure method against side channel analysis for cryptographic algorithm using Boolean operations and arithmetic operation. To protect a cryptographic algorithm combining Boolean and arithmetic instructions against first order side channel analysis, it is necessary to perform conversions between Boolean masking and arithmetic masking. The present invention proposes a new conversion method from arithmetic masking to Boolean masking, using only one precomputed table T. Said table T being configured so that to convert from arithmetic to Boolean masking k-bit nibble by k-bit nibble for integers having a size greater than k bits while adding a masked carry from the modular addition to the nibble.
机译:本发明涉及一种针对使用布尔运算和算术运算的密码算法的侧信道分析的对策方法。为了保护结合布尔和算术指令的密码算法免受一阶边通道分析,有必要在布尔掩蔽和算术掩蔽之间执行转换。本发明提出了一种仅使用一个预先计算的表T的,从算术掩蔽到布尔掩蔽的新转换方法。所述表T被配置为使得对于具有一定大小的整数,从k个半字节到k个半字节从算术掩蔽转换为布尔掩蔽。大于k位,同时从模块化加法器到半字节中添加了一个掩码进位。

著录项

  • 公开/公告号US2015110266A1

    专利类型

  • 公开/公告日2015-04-23

    原文格式PDF

  • 申请/专利权人 GEMALTO S.A.;

    申请/专利号US201314382549

  • 发明设计人 BLANDINE DEBRAIZE;

    申请日2013-03-04

  • 分类号H04L9;H04L9/06;H04L9/32;

  • 国家 US

  • 入库时间 2022-08-21 15:24:32

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