公开(公告)号：US09069971B2

公开(公告)日：2015-06-30

申请号：US14021868

申请日：2013-09-09

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Guillaume Barbu ,  Alberto Batistello ,  Christophe Giraud ,  Soline Renner

IPC: G06F11/30 ,  G06F21/57 ,  G06F7/72

CPC classification number: G06F21/577 ,  G06F7/723 ,  G06F2207/7271

Abstract: A method of testing security of an electronic device against a combination of a side-channel attack and a fault-injection attack implemented during a method of cryptographic processing that includes: delivering a message signature based on a secret parameter and implementing a recombination of at least two intermediate values according to the Chinese remainder theorem; and verifying the signature on the basis of at least one public exponent. The method of testing includes: transmitting a plurality of messages to be signed by said electronic device; disturbing each message, including modifying the message by inserting an identical error for each message, before executing a step of determining one of the intermediate values; and analyzing physical measurements, obtained during the step of verifying the signature as a function of the message to be signed, the identical error for each message, and an assumption of a value of part of the secret parameter.

Abstract translation: 一种针对在密码处理方法期间实现的侧信道攻击和故障注入攻击的组合来测试电子设备的安全性的方法，包括：基于秘密参数传递消息签名并实现至少 根据中国剩余定理的两个中间值; 以及基于至少一个公共指数验证签名。 测试方法包括：发送要由所述电子设备签名的多个消息; 干扰每个消息，包括在执行确定中间值之一的步骤之前对每个消息插入相同的错误来修改消息; 以及分析在根据要签名的消息的函数验证签名的步骤期间获得的物理测量，每个消息的相同误差以及秘密参数的一部分的值的假设。

公开(公告)号：US20140075203A1

公开(公告)日：2014-03-13

申请号：US14021868

申请日：2013-09-09

Applicant: OBERTHUR TECHNOLOGIES

Inventor： Guillaume Barbu ,  Alberto Batistello ,  Christophe Giraud ,  Soline Renner

IPC: G06F21/57

CPC classification number: G06F21/577 ,  G06F7/723 ,  G06F2207/7271

Abstract: A method of testing security of an electronic device against a combination of a side-channel attack and a fault-injection attack implemented during a method of cryptographic processing that includes: delivering a message signature based on a secret parameter and implementing a recombination of at least two intermediate values according to the Chinese remainder theorem; and verifying the signature on the basis of at least one public exponent. The method of testing includes: transmitting a plurality of messages to be signed by said electronic device; disturbing each message, including modifying the message by inserting an identical error for each message, before executing a step of determining one of the intermediate values; and analyzing physical measurements, obtained during the step of verifying the signature as a function of the message to be signed, the identical error for each message, and an assumption of a value of part of the secret parameter.

Abstract translation: 一种针对在密码处理方法期间实现的侧信道攻击和故障注入攻击的组合来测试电子设备的安全性的方法，包括：基于秘密参数传递消息签名并实现至少 根据中国剩余定理的两个中间值; 以及基于至少一个公共指数验证签名。 测试方法包括：发送要由所述电子设备签名的多个消息; 干扰每个消息，包括在执行确定中间值之一的步骤之前对每个消息插入相同的错误来修改消息; 以及分析在根据要签名的消息的函数验证签名的步骤期间获得的物理测量，每个消息的相同误差以及秘密参数的一部分的值的假设。