公开(公告)号：US09569616B2

公开(公告)日：2017-02-14

申请号：US14565821

申请日：2014-12-10

Applicant: CRYPTOGRAPHY RESEARCH, INC.

Inventor： Andrew John Leiserson ,  Mark Evan Marson ,  Megan Anneke Wachs

IPC: G06F21/71 ,  G06F21/55

CPC classification number: G06F21/72 ,  G06F21/71 ,  G06F21/755 ,  H04L9/003 ,  H04L2209/04 ,  H04L2209/12 ,  H04L2209/16

Abstract: A method of and system for gate-level masking of secret data during a cryptographic process is described. A mask share is determined, wherein a first portion of the mask share includes a first number of zero-values and a second number of one-values, and a second portion of the mask share includes the first number of one-values and the second number of zero-values. Masked data values and the first portion of the mask share are input into a first portion of masked gate logic, and the masked data values and the second portion of the mask share are input into a second portion of the masked gate logic. A first output from the first portion of the masked gate logic and a second output from the second portion of the masked gate logic are identified, wherein either the first output or the second output is a zero-value.

Abstract translation: 描述在密码处理期间秘密数据的门级掩蔽的方法和系统。 确定掩模共享，其中掩模共享的第一部分包括第一数量的零值和第二数量的一值，并且掩模共享的第二部分包括第一数量的一值，第二部分包括第二数量的一值 零值数。 掩蔽数据值和掩模共享的第一部分被输入到屏蔽门逻辑的第一部分中，并且掩蔽的数据值和掩模共享的第二部分被输入到被掩蔽的门逻辑的第二部分。 识别来自屏蔽门逻辑的第一部分的第一输出和来自屏蔽门逻辑的第二部分的第二输出，其中第一输出或第二输出都是零值。