公开(公告)号：US20160112194A1

公开(公告)日：2016-04-21

申请号：US14291665

申请日：2014-05-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hong-Mook CHOI ,  Xingguang FENG

IPC: H04L9/10 ,  G06F1/10

CPC classification number: H04L9/00 ,  H04L9/003 ,  H04L9/0625 ,  H04L2209/12 ,  H04L2209/122 ,  H04L2209/127

Abstract: Provided is a cryptographic device implementing an S-Box of an encryption algorithm using a many-to-one binary function. The cryptographic device includes: arrays of first logic gates including I first logic gates which each receive 2 bits of an input signal; 2N second logic gates which each receive corresponding J bits from among I bits output from the arrays of the first logic gates; and L third logic gates which each receive K bits from among 2N bits output from the second logic gates, wherein there is a many-to-one correspondence between the N bits of the input signal and the K bits input to each of the third logic gates, and wherein the N, I, J, K, and L are positive integers. Because a signal output from each array includes only one active bit, current is always consumed constantly to prevent internal data from leaking out to a hacker.

Abstract translation: 提供了一种使用多对一二进制功能实现加密算法的S-Box的加密设备。 密码装置包括：第一逻辑门阵列，包括I个第一逻辑门，每个第一逻辑门接收输入信号的2位; 2N个第二逻辑门，每个第二逻辑门从从第一逻辑门的阵列输出的I位中接收相应的J位; 和L个第三逻辑门，每个逻辑门从第二逻辑门输出的2N位中接收K位，其中在输入信号的N位和输入到每个第三逻辑的K位之间存在多对一的对应关系 门，并且其中N，I，J，K和L是正整数。 因为每个阵列的信号输出仅包含一个有效位，所以电流始终被消耗，以防止内部数据泄漏到黑客中。