专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US5768379A System for the checking of limited access to authorized time slots renewable by means of a portable storage device 失效
标题翻译：用于检查通过便携式存储装置可再生的授权时隙的有限访问的系统
公开(公告)号：US5768379A
公开(公告)日：1998-06-16
申请号：US619771
申请日：1996-03-07
申请人： Marc Girault , Renaud Reitter , Marie-Josephe Revillet
发明人： Marc Girault , Renaud Reitter , Marie-Josephe Revillet
IPC分类号： A47G29/12 , A47G29/14 , G06F21/20 , G07C9/00 , G07F7/08 , G07F7/10 , G07F7/12 , G09C1/00 , H04L9/32 , H04L9/16
CPC分类号： G07F7/1008 , A47G29/1201 , A47G29/141 , G06Q20/341 , G06Q20/4097 , G06Q20/40975 , G07C9/00015 , G07C9/00023 , G07F7/08 , G07F7/082 , G07F7/1016 , G07F7/12
摘要： The invention relates to systems for checking access limited to authorized time slots renewable by means of a portable storage device. The system comprises, for this purpose, an element (LE) producing electronic keys formed by a data element pertaining to a time slot and by the signature of this data element. These keys are loaded into devices such as memory cards (C). Electronic locks (L) capable of verifying the signatures are implanted in the different (physical or logical) locations, the access to which has to be guarded. Application to the checking of access to buildings or computer systems.
摘要翻译： PCT No.PCT / FR95 / 00935 Sec。 371日期：1996年3月7日 102（e）1996年3月7日PCT PCT 1995年7月11日PCT公布。出版物WO96 / 02899 日期1996年2月1日本发明涉及通过便携式存储装置检查限制到可再生的授权时隙的访问系统。为此，该系统包括产生由与时间有关的数据元素和该数据元素的签名形成的电子密钥的元素（LE）。这些键被装载到诸如存储卡（C）的设备中。能够验证签名的电子锁（L）被植入在不同（物理或逻辑）位置，必须保护其访问。应用于检查建筑物或计算机系统的访问。

32. 发明授权

US5128997A Wired microcircuit card and a method for transactions between a corresponding wired microcircuit card and a terminal 失效
标题翻译：有线微电路卡和相应的有线微电路卡与终端之间交易的方法
公开(公告)号：US5128997A
公开(公告)日：1992-07-07
申请号：US554122
申请日：1990-07-17
申请人： Jean-Claude Pailles , Marc Girault
发明人： Jean-Claude Pailles , Marc Girault
IPC分类号： G06F12/14 , G06F21/24 , G06K17/00 , G06K19/00 , G06K19/073 , G07F7/08 , G07F7/10
CPC分类号： G07F7/1008 , G06Q20/341 , G06Q20/357 , G06Q20/3672 , G06Q20/3676 , G06Q20/40975 , G07F7/082 , G07F7/0866
摘要： The invention concerns a microcircuit card of the kind comprising:a communication interface;an internal memorypa wired processor unit allowing this internal memory to be addressed from the outside.According to the main characteristic of the invention, provision is made for a secret internal memory zone not addressable from the outside, and the processor unit comprises a wired circuit capable of using the contents of the secret memory for establishing a first serial cryptographic function of two operands and means reacting to the interrogation of predetermined addresses of the internal memory, accompanied by a keyword by applying this keyword and the output of the internal memory as operands of the wired circuit, whilst the output of the wired circuit is applied to the interface.
摘要翻译：本发明涉及一种微电路卡，包括：通信接口; 内部存储器是有线处理器单元，允许从外部寻址该内部存储器。根据本发明的主要特征，提供了一种不能从外部寻址的秘密内部存储区域，并且处理器单元包括能够使用秘密存储器的内容来建立第二串行密码功能的有线电路通过将该关键字和内部存储器的输出作为有线电路的操作数，伴随着关键字的询问来响应内部存储器的预定地址的操作数和装置，同时将有线电路的输出应用于接口。

33. 发明授权

US07991151B2 Method for secure delegation of calculation of a bilinear application 有权
标题翻译：双线性应用计算的安全授权方法
公开(公告)号：US07991151B2
公开(公告)日：2011-08-02
申请号：US11667031
申请日：2005-10-21
申请人： David Lefranc , Marc Girault
发明人： David Lefranc , Marc Girault
IPC分类号： H04L9/00
CPC分类号： G06Q20/383 , H04L9/3073 , H04L2209/56 , H04L2209/80
摘要： A technique for secure delegation of calculation of a value f(X,Y) of a bilinear application in a computational server. The technique comprises selection of two secret parameters a and b; calculation of the numbers Xa and Yb; supply of the two numbers Xa and Yb to the computational server; calculation of f(Xa, Yb) by said server; receipt of the value of f(Xa,Yb) from the server; extraction of the abth root of f(Xa,Yb).
摘要翻译：一种用于在计算服务器中安全地委派计算双线性应用的值f（X，Y）的技术。该技术包括选择两个秘密参数a和b; 数字Xa和Yb的计算; 将两个数字Xa和Yb提供给计算服务器; 由所述服务器计算f（Xa，Yb）从服务器接收f（Xa，Yb）的值; 提取f（Xa，Yb）的根根。

34. 再颁专利

USRE42517E1 Authenticating or signature method with reduced computations 有权
标题翻译：减少计算的认证或签名方法
公开(公告)号：USRE42517E1
公开(公告)日：2011-07-05
申请号：US12393959
申请日：2000-01-26
申请人： Marc Girault , Jean-Claude Pailles
发明人： Marc Girault , Jean-Claude Pailles
IPC分类号： H04L9/28
CPC分类号： H04L9/3247 , H04L9/3218
摘要： Authentication and signature process with reduced number of calculations.The process involves a first entity called the “prover”, which possesses a public key v and a secret key s, these keys verify the relation v=s−t (mod n), where n is an integer called modulus and t is a parameter, and a second entity called a “verifier”, which knows the public key v. This process implies exchange of information following a “zero-knowledge protocol” between the verifier and the prover and cryptographic calculations on this information, some calculations being carried out “modulo n”. The process of the invention is characterised by the fact that the modulus n is specific to the prover that communicates this modulus to the verifier.
摘要翻译：验证和签名过程减少计算次数。该过程涉及称为“证明者”的第一实体，其具有公开密钥v和秘密密钥，这些密钥验证关系v = s-t（mod n），其中n是称为模数的整数，t是参数，以及称为“验证者”的第二个实体，它知道公开密钥v。该过程意味着在验证者与证明者之间的“零知识协议”之后交换信息，并对该信息进行加密计算，进行一些计算输出“模n”。本发明的方法的特征在于，模数n对于将该模量传递给验证者的证明者是特定的。

35. 发明申请

US20110107102A1 METHOD FOR AUTHENTICATING AN ENTITY BY A VERIFIER 有权
标题翻译：通过验证器验证实体的方法
公开(公告)号：US20110107102A1
公开(公告)日：2011-05-05
申请号：US12997109
申请日：2009-06-16
申请人： Sébastien Canard , Iwen Coisel , Marc Girault
发明人： Sébastien Canard , Iwen Coisel , Marc Girault
IPC分类号： H04L9/00
CPC分类号： H04L9/3271 , H04L2209/42 , H04L2209/805
摘要： A method for authenticating an entity by a verifier, the entity having an identifier, the verifier having a pair of private and public keys, comprising: sending to the entity a first random number selected by the verifier; a step wherein the entity encrypts a value by means of the public key of the verifier, said value including the first random number and an authentication datum on which the identifier of the entity depends; and the entity of said encrypted value sending a reply to authenticate said entity. The invention can be applied to the field of low-cost cryptography, especially the field of radio-identification.
摘要翻译：一种用于由验证者认证实体的方法，所述实体具有标识符，所述验证者具有一对私钥和公钥，包括：向所述实体发送由所述验证者选择的第一随机数; 其中所述实体通过所述验证者的公钥加密值，所述值包括所述第一随机数和所述实体的标识符所依赖的认证数据; 并且所述加密值的实体发送回复以认证所述实体。本发明可以应用于低成本密码学领域，特别是无线电识别领域。

36. 发明授权

US07822199B2 Method and device for performing a cryptographic operation 有权
标题翻译：用于执行加密操作的方法和设备
公开(公告)号：US07822199B2
公开(公告)日：2010-10-26
申请号：US10590794
申请日：2005-02-24
申请人： Marc Girault , David Lefranc
发明人： Marc Girault , David Lefranc
IPC分类号： H04L9/00
CPC分类号： H04L9/0662 , G06F7/523 , H04L9/3247 , H04L2209/56
摘要： A method and device for performing a cryptographic operation by a device controlled by a security application executed outside thereof in which a cryptographic value (y) is produced a calculation comprising at least one multiplication between first and second factors containing a security key (s) associated with the device and a challenge number (c) provided by the security application. The first multiplication factor comprises a determined number of bits (L) in a binary representation and the second factor is constrained in such a way that it comprises, in a binary representation, several bits at 1 with a sequence of at least L−1 bits at 0 between each pair of consecutive bits to 1 while the multiplication is carried out by assembling the binary versions of the first factor shifted according to positions of the bits at 1 of the second factor, respectively.
摘要翻译：一种用于通过由其外部执行的安全性应用控制的设备执行密码操作的方法和设备，其中产生密码值（y），该计算包括包含相关联的安全密钥的第一和第二因素之间的至少一个乘法该设备和安全应用程序提供的挑战编号（c）。第一乘法因子包括二进制表示中确定的比特数（L），并且第二因素受到限制，使得它以二进制表示方式包含具有至少L-1比特序列的数位1 在每对连续比特之间的0处为1，而通过组合根据第二因子的1处的位的位置移位的第一因子的二进制版本来执行乘法。

37. 发明授权

US07590846B2 Public key cryptographic method of protecting an electronic chip against fraud 有权
标题翻译：保护电子芯片免受欺诈的公共密钥加密方法
公开(公告)号：US07590846B2
公开(公告)日：2009-09-15
申请号：US10761040
申请日：2004-01-20
申请人： Marc Girault
发明人： Marc Girault
IPC分类号： H04L9/32
CPC分类号： G07F7/1008 , G06Q20/341 , G06Q20/3674 , G06Q20/40975 , H04L9/0662 , H04L9/3066 , H04L9/3236 , H04L2209/56
摘要： An asymmetrical cryptographic method of protecting an electronic chip against fraud in transactions between the electronic chip and an application, involving calculating an authentication value V from input parameters in the electronic chip. The chip produces a pseudo-random number r specific to the transaction by means of a serial pseudo-random generator included in the chip. The chip sends the application a parameter x calculated by the application prior to the transaction, linked to the random number r by a mathematical relationship, and stored in a data memory of the chip. The chip calculates a parameter y constituting the whole or a portion of the authentication value V by means of a serial function whose input parameters are at least the random number r specific to the transaction and a private key s belonging to an asymmetrical pair of keys. The chip sends the authentication value V to the application, and the application verifies the authentication value V by means of a verification function whose input parameters consist exclusively of public parameters including at least the public key p.
摘要翻译：一种用于保护电子芯片免受电子芯片与应用之间交易中的欺诈的不对称密码方法，包括从电子芯片中的输入参数计算认证值V. 芯片通过芯片中包含的串行伪随机发生器产生特定于交易的伪随机数r。该芯片向应用发送由事务之前的应用计算的参数x，通过数学关系链接到随机数r，并存储在芯片的数据存储器中。芯片通过串行功能计算构成整个或一部分认证值V的参数y，该串行功能的输入参数至少为事务所特有的随机数r和属于非对称键的私钥。芯片将认证值V发送到应用程序，并且应用程序通过验证功能验证认证值V，该验证功能的输入参数仅包括至少包括公钥p的公共参数。

38. 发明申请

US20090138707A1 Method for Fast Pre-Authentication by Distance Recognition 有权
标题翻译：通过距离识别快速预认证的方法
公开(公告)号：US20090138707A1
公开(公告)日：2009-05-28
申请号：US11883975
申请日：2006-02-01
申请人： Herve Sibert , Marc Girault
发明人： Herve Sibert , Marc Girault
IPC分类号： H04L9/32 , H04K1/00 , G06K19/07 , G06K7/00 , G07F7/10 , G06F21/00 , H04L9/06
CPC分类号： H04L9/3271 , G06Q20/388 , G07F7/1008 , H04L2209/805 , H04W12/06
摘要： A method of pre-authentication of a first entity (10) by a second entity (1) communicating with each other via a wireless connection. The second entity (1) sends (23′) a challenge value (c). If the first entity (10) receives (23) a challenge value (c′), it applies to the received challenge value a predefined transformation (g) known to the second entity to obtain a first transformed value (r) and then sends (24) the first transformed value (r) obtained. If the second entity receives (24′) a transformed value (r′), it compares (25′) the received transformed value to a second transformed value (r″) obtained by applying the predefined transformation (g) to the challenge value sent and considers the pre-authentication to have succeeded if the result of comparing the second transformed value obtained and the transformed value received is below a predefined threshold (m).
摘要翻译：一种通过无线连接相互通信的第二实体（1）对第一实体（10）进行预认证的方法。第二实体（1）发送（23'）挑战值（c）。如果第一实体（10）接收到（23）询问值（c'），则其对接收到的质询值应用第二实体已知的获得第一变换值（r）的预定变换（g），然后发送（ 24）获得的第一变换值（r）。如果第二实体接收（24'）变换值（r'），则将接收到的变换值与（25）'通过将预定变换（g）应用于询问值而获得的第二变换值（r“）进行比较如果所获得的第二变换值与所接收的变换值的比较低于预先设定的阈值（m），则认为预认证成功。

39. 发明授权

US07330549B2 Method of producing a cryptographic unit for an asymmetric cryptography system using a discrete logarithm function 有权
标题翻译：使用离散对数函数生成用于非对称加密系统的加密单元的方法
公开(公告)号：US07330549B2
公开(公告)日：2008-02-12
申请号：US10487388
申请日：2002-08-16
申请人： Marc Girault
发明人： Marc Girault
IPC分类号： H04L9/00 , H04L9/28 , H04L9/30
CPC分类号： H04L9/3013
摘要： The invention relates to a group of public-key cryptography schemas that use the discrete logarithm problem with the purpose of reducing the cost of developing, producing and maintaining a cryptographic unit. One of the entities (10) performs a calculation comprising at most a small number of additions, subtractions and multiplications of integers, said calculation being common to all of the schemas of the group. The aforementioned calculation is preferably the main calculation to be performed by the entity in question while most of the other calculations can be performed in advance. In particular, said calculation is of the y=ar+bs type, wherein r is a random number and s is a secret key that is specific to the entity (10). The calculation is common to a group of schemas for entity authentication, message authentication, digital signatures and key exchange.
摘要翻译：本发明涉及使用离散对数问题的一组公钥加密方案，其目的是降低开发，生产和维护加密单元的成本。实体（10）中的一个执行包括至少少量的整数的加法，减法和乘法的计算，所述计算对于组的所有模式是共同的。上述计算优选地是由所讨论的实体执行的主要计算，而大多数其他计算可以预先执行。特别地，所述计算是y = ar + bs类型，其中r是随机数，s是对于实体（10）特有的秘密密钥。该计算对于用于实体认证，消息认证，数字签名和密钥交换的一组模式是通用的。

40. 发明授权

US07184547B1 Authenticating or signature method with reduced computations 有权
标题翻译：减少计算的认证或签名方法
公开(公告)号：US07184547B1
公开(公告)日：2007-02-27
申请号：US09889557
申请日：2000-01-26
申请人： Marc Girault , Jean-Claude Pailles
发明人： Marc Girault , Jean-Claude Pailles
IPC分类号： H04L9/28 , H04L9/30
CPC分类号： H04L9/3247 , H04L9/3218
摘要： Authentication and signature process with reduced number of calculations.The process involves a first entity called the “prover”, which possesses a public key v and a secret key s, these keys verify the relation v=s−t (mod n), where n is an integer called modulus and t is a parameter, and a second entity called a “verifier”, which knows the public key v. This process implies exchange of information following a “zero-knowledge protocol” between the verifier and the prover and cryptographic calculations on this information, some calculations being carried out “modulo n”. The process of the invention is characterised by the fact that the modulus n is specific to the prover that communicates this modulus to the verifier.
摘要翻译：验证和签名过程减少计算次数。该过程涉及称为“证明者”的第一实体，其具有公钥 v和秘密密钥，这些密钥验证关系v = s ^{-t mod n），其中 n是一个称为模数的整数，而 t是一个参数，称为“验证者”的第二个实体知道公钥 v。该过程意味着在验证者和证明者之间的“零知识协议”之后交换信息，并且对该信息进行密码计算，一些计算被执行为“模” n“。本发明的过程的特征在于，模数 n对于将该模量传递给验证者的证明者是特定的。}

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式