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121. 发明申请

US20060274894A1 Method and apparatus for cryptography 审中-公开
标题翻译：密码学方法和装置
公开(公告)号：US20060274894A1
公开(公告)日：2006-12-07
申请号：US11367303
申请日：2006-03-06
申请人： Ihor Vasyltsov , Yoo-Jin Baek , Hee-Kwan Son
发明人： Ihor Vasyltsov , Yoo-Jin Baek , Hee-Kwan Son
IPC分类号： H04L9/28
CPC分类号： H04L9/004 , H04L9/3066 , H04L2209/34
摘要： Provided are example embodiments of a cryptographic method and apparatus thereof. The cryptographic method and apparatus may be implemented in Weierstrass and Hessian forms, and for the point representations, Affine, Ordinary Projective, Jacobian Projective, and Lopez-Dahab Projective. The cryptographic method and apparatus may prevent confidential information from leakage by checking faults in a basic point due to certain attacks, faults in definition fields, and faults in elliptic curve (EC parameters before outputting final cryptographic results.
摘要翻译：提供了密码方法及其装置的示例性实施例。加密方法和装置可以在Weierstrass和Hessian形式中实现，并且对于Affine，普通投影，Jacobian投影和Lopez-Dahab投影的点表示可以实现。密码方法和装置可以通过检查某些攻击，定义字段中的故障和椭圆曲线中的故障（EC输出最终加密结果之前的EC参数）来检查基本点中的故障来防止机密信息泄漏。

122. 发明申请

US20060029224A1 System and recording medium for securing data and methods thereof 审中-公开
标题翻译：用于保护数据的系统和记录介质及其方法
公开(公告)号：US20060029224A1
公开(公告)日：2006-02-09
申请号：US11197316
申请日：2005-08-05
申请人： Yoo-Jin Baek , Sang-geun Oh , Seo-kyu Kim
发明人： Yoo-Jin Baek , Sang-geun Oh , Seo-kyu Kim
IPC分类号： H04L9/30
CPC分类号： H04L9/004 , H04L9/302 , H04L9/3249 , H04L2209/04
摘要： A system and recording medium for securing data and methods thereof including a modular exponentiation. One embodiment includes first masking a message, second masking an exponent, and executing a modular exponentiation based at least one of the first and second maskings. Another embodiment includes first masking a message, second masking at least one exponent, executing a modular exponentiation based at least one of the first and second maskings, detecting an error, executing a modular multiplication operation based on the detection and diffusing the detected error to generate an electronic signature. Yet another embodiment includes first masking a message, second masking at least one exponent, executing a modular exponentiation based at least one of the first and second maskings, detecting an error, and generating an electronic signature based on the detected error.
摘要翻译：一种用于保护数据的系统和记录介质及其方法，包括模幂运算。一个实施例包括首先掩蔽消息，第二掩蔽指数，以及基于第一和第二掩码中的至少一个执行模幂运算。另一个实施例包括首先掩蔽消息，第二掩蔽至少一个指数，基于第一和第二掩码中的至少一个执行模幂运算，检测错误，基于检测执行模乘法运算并扩展检测到的错误以产生电子签名。另一个实施例包括首先掩蔽消息，第二掩蔽至少一个指数，基于第一和第二掩蔽中的至少一个执行模幂运算，检测错误，以及基于检测到的错误生成电子签名。

123. 发明授权

US5469507A Secure communication and computation in an insecure environment 失效
标题翻译：在不安全的环境中安全的沟通和计算
公开(公告)号：US5469507A
公开(公告)日：1995-11-21
申请号：US203965
申请日：1994-03-01
申请人： Ran Canetti , Amir Herzberg
发明人： Ran Canetti , Amir Herzberg
IPC分类号： G06F15/16 , G09C1/00 , H04L9/06 , H04L9/08 , H04L9/14 , H04L9/16 , H04L9/32 , H04K1/00
CPC分类号： H04L9/004 , H04L9/0891 , H04L9/3247 , H04L2209/80
摘要： A mechanism which secures the communication and computation between processors in an insecure distributed environment implements efficient "compilers" for a protocol between processors. The protocol is one that assures some input-output relation when executed by processors which are not all trusted but with secret and authenticated communication links between every two processors. This protocol is transformed by a compiler into a protocol that guarantees essentially the same input-output relations in the presence of (the same type of) insecure processors and insecure communication links. Additionally, a method maintains secret values for a sequence of periods, each secret value being shared by two or more processors for one or several periods, where the processors are connected by a communication network.Another mechanism establishes different cryptographic keys established for each period of communication. Essentially, the effect of exposures is contained to the period in which they occur, or to a minimal number of following periods, and the effect of exposures is contained to the processors exposed. At each period a processor is called nonfaulty if the adversary does not control it. A processor is called secure at a given period if it is non-faulty and also has a secret key, unknown to the adversary.
摘要翻译：在不安全的分布式环境中确保处理器之间的通信和计算的机制为处理器之间的协议实现有效的“编译器”。该协议是当处理器执行时确保一些输入 - 输出关系，这些处理器不是全部受信任的，而是在每两个处理器之间具有秘密和经过认证的通信链路。该协议由编译器转换成协议，该协议在存在（相同类型的）不安全处理器和不安全的通信链路的情况下保证基本相同的输入 - 输出关系。此外，一种方法维护一系列周期的秘密值，每个秘密值由两个或多个处理器共享一个或多个周期，其中处理器由通信网络连接。另一种机制为每个通信周期建立不同的加密密钥。基本上，曝光的影响包含在它们发生的时期或最少数量的后续期间，并且暴露的影响被包含在暴露的处理器中。在每个时期，如果对手没有控制它，处理器被称为非故障的。处理器在给定的时间段被称为安全的，如果它是无故障的，并且还具有对手未知的秘密密钥。

124. 发明授权

US5307409A Apparatus and method for fault detection on redundant signal lines via encryption 失效
标题翻译：通过加密对冗余信号线进行故障检测的装置和方法
公开(公告)号：US5307409A
公开(公告)日：1994-04-26
申请号：US995107
申请日：1992-12-22
申请人： Kevin R. Driscoll
发明人： Kevin R. Driscoll
IPC分类号： H04B3/46 , G06F11/08 , G06F11/16 , H04B17/00 , H04L9/00 , H04L9/18 , H04K1/00
CPC分类号： G06F11/08 , G06F11/1625 , H04L9/004 , H04L9/08
摘要： A fault detection apparatus and method combines each of a plurality of redundant digital data signals with a unique key signal for transmission over one of a plurality of signal lines and recombines each with its unique key signal at a receiving end. The recombined signals are then compared at the receiving end to detect certain faults between or among the plurality of what should be identical received signals.
摘要翻译：故障检测装置和方法将多个冗余数字数据信号中的每一个与唯一的键信号组合，用于在多条信号线中的一条信号线上传输，并在接收端重新组合其唯一的键信号。然后在接收端比较重新组合的信号以检测多个应该是相同的接收信号之间或之间的某些故障。

125. 发明授权

US12034831B2 Hardware countermeasures against DFA attacks on AES operations 有权
公开(公告)号：US12034831B2
公开(公告)日：2024-07-09
申请号：US17844817
申请日：2022-06-21
申请人： Silicon Laboratories Inc.
发明人： Steven Cooreman
IPC分类号： H04L9/00 , H04L9/06
CPC分类号： H04L9/004 , H04L9/0631 , H04L2209/12
摘要： A system and method of performing an AES encryption, while also determining whether a potentially successful DFA attack is underway is disclosed. When interim results are not visible, the DFA attack that is most likely to be succeed is initiated by introducing the fault between the MixColumns operation in the second to last round and the MixColumns operation in the next to last round. To detect this, the present system and method performs the next to last round and then repeats this next to last round. The results of the original round and repeated round are compared to identify a possible DFA attack. Importantly, the same hardware is used for the original round and the repeated round. In this way, the amount of additional hardware needed to detect a possibly successful DFA attack is minimized. Further, the impact on execution time may be 10% or less.

126. 发明授权

US11989609B2 Method of securing a comparison of data during the execution of a program 有权
公开(公告)号：US11989609B2
公开(公告)日：2024-05-21
申请号：US15808362
申请日：2017-11-09
申请人： Rambus Inc.
发明人： Vincent Dupaquis , Eric Le Cocquen
IPC分类号： H04L9/00 , G06F7/02 , G06F11/14 , G06F21/52 , G06F21/60 , G06F21/75 , G06K19/073 , G09C1/00 , H04L9/40 , G06F9/30
CPC分类号： G06K19/07372 , G06F7/02 , G06F11/14 , G06F21/52 , G06F21/60 , G06F21/75 , G09C1/00 , H04L9/004 , H04L63/0428 , G06F9/30021 , G06F2207/7271
摘要： This disclosure relates to a method for securing the execution of a program by a processor, including a comparison instruction for comparing two data items, followed by a program operation which is selected as a function of a comparison result provided by the comparison instruction. The method may include, before the execution of the comparison instruction, calculating in various ways comparison data representative of the equality of the data to be compared, after the execution of the comparison instruction, verifying whether the comparison data calculated are consistent with the fact that the program operation is selected or not selected, and activating an error signal if the comparison data are mutually inconsistent or inconsistent with the result of the comparison.

127. 发明授权

US11942440B2 Method for detecting a differential fault analysis attack and a thinning of the substrate in an integrated circuit, and associated integrated circuit 有权
公开(公告)号：US11942440B2
公开(公告)日：2024-03-26
申请号：US17091466
申请日：2020-11-06
申请人： STMicroelectronics (Rousset) SAS
发明人： Alexandre Sarafianos , Abderrezak Marzaki
IPC分类号： H01L23/00 , G06F21/55 , G06F21/78 , G06F21/87 , H01L29/06 , H04L9/00
CPC分类号： H01L23/576 , G06F21/556 , G06F21/78 , G06F21/87 , H01L29/0646 , H01L29/0649 , H04L9/004 , H04L2209/12
摘要： An integrated circuit includes a semiconductor substrate having a rear face. A first semiconductor well within the substrate includes circuit components. A second semiconductor well within the substrate is insulated from the first semiconductor well and the rest of the substrate. The second semiconductor well provides a detection device that is configurable and designed to detect a DFA attack by fault injection into the integrated circuit.

128. 发明授权

US11870913B2 Method for generating a digital signature of an input message 有权
公开(公告)号：US11870913B2
公开(公告)日：2024-01-09
申请号：US17437890
申请日：2020-02-24
申请人： THALES DIS FRANCE SAS
发明人： Aline Gouget , Jan Vacek
IPC分类号： H04L9/32 , H04L9/00 , H04L9/08
CPC分类号： H04L9/3252 , H04L9/004 , H04L9/008 , H04L2209/16
摘要： Provided is a method for generating a digital signature of an input message (M) based on a secret key (dA) of a client device having access to a first set and a second set of precomputed data stored in a storage unit. The first set of precomputed data comprises private element parts (ki) protected with an homomorphic encryption. The second set of precomputed data comprises public element parts (Qi) paired with the private element parts of the first set. Each private element part is a discrete logarithm of the public element part paired therewith. The private element (k), can be homomorphically encrypted, by combining homomorphically encrypted private element parts selected in the first set (ki). The selection of the public and private element parts depends on the input message. Other embodiments are disclosed.

129. 发明授权

US11683170B2 Implicit RSA certificates 有权
公开(公告)号：US11683170B2
公开(公告)日：2023-06-20
申请号：US17109866
申请日：2020-12-02
申请人： ARRIS Enterprises LLC
发明人： Alexander Medvinsky , Eric J. Sprunk
IPC分类号： H04L9/30 , H04L9/32 , G06F7/72 , H04L9/00
CPC分类号： H04L9/302 , H04L9/3249 , H04L9/3263 , G06F7/727 , H04L9/004
摘要： A secure digital communications method is provided in which a Certificate Authority generates an improved RSA key pair having a modulus, a public key exponent, a public key, and a private key. The public key exponent can contain descriptive attributes and a digital signature. The digital signature can be responsive to the descriptive attributes and the modulus. A secure session can be established between a first system and a second system, within a secure digital communication protocol. The second system can verify the digital signature to authenticate the public key.

130. 发明授权

US10878132B2 Logic device for detecting faults 有权
公开(公告)号：US10878132B2
公开(公告)日：2020-12-29
申请号：US15920835
申请日：2018-03-14
申请人： STMicroelectronics (Rousset) SAS
发明人： Alexandre Sarafianos , Thomas Ordas
IPC分类号： G06F21/76 , H04L9/00 , G09C1/00 , G11C19/28 , H03K19/003 , H03K19/20 , H03K19/21
CPC分类号： G06F21/76 , G09C1/00 , G11C19/28 , H03K19/003 , H03K19/20 , H03K19/21 , H04L9/004
摘要： A device can be used for detecting faults. A shift register is suitable for shifting, in tempo with a clock, a binary signal alternating between two logic levels, in successive cells of the shift register. A first logic circuit is suitable for comparing values contained in at least one pair of cells of the register.

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