公开(公告)号：US07194632B2

公开(公告)日：2007-03-20

申请号：US10312243

申请日：2001-06-22

Applicant: Didier Guerin ,  Marc Girault

Inventor： Didier Guerin ,  Marc Girault

IPC: H04K1/00 ,  H04L9/00

CPC classification number: H04L63/0442 ,  G06F21/32 ,  G06F21/33 ,  G06F21/42 ,  G06F2221/2103 ,  H04L9/3231 ,  H04L63/0861 ,  H04L2209/805

Abstract: A secure biometric authentication method, comprising communication of biometric data to a verification module. The invention is characterized in that it consists in encrypting the biometric data with a cryptographic algorithm and in introducing for each cryptographic operation carried out a different diversification value.

Abstract translation: 一种安全生物认证方法，包括将生物特征数据传送到验证模块。 本发明的特征在于它包括用加密算法对生物特征数据进行加密，以及对于执行不同多样化值的每个密码操作的引入。

公开(公告)号：US07802098B2

公开(公告)日：2010-09-21

申请号：US10296915

申请日：2001-05-30

Applicant: Jean-Claude Pailles ,  Marc Girault

Inventor： Jean-Claude Pailles ,  Marc Girault

IPC: H04L9/32 ,  H04L9/00

CPC classification number: G07F7/1008 ,  G06Q20/341 ,  G06Q20/367 ,  G06Q20/40975 ,  G07F7/084

Abstract: Method of cryptography in a smart card comprising a central processing unit, said method implementing precomputation operations, characterized in that said precomputation operations are performed by the smart card and in that the precomputation operations are carried out at a session during the waiting periods of the inputs/outputs of the central processing unit.

Abstract translation: 一种包括中央处理单元的智能卡中的加密方法，所述方法实现预先计算操作，其特征在于，所述预计算操作由智能卡执行，并且预计算操作在输入的等待期间的会话期间执行 /中央处理单元的输出。

公开(公告)号：US20080137844A1

公开(公告)日：2008-06-12

申请号：US10590794

申请日：2005-02-24

Applicant: Marc Girault ,  David Lefranc

Inventor： Marc Girault ,  David Lefranc

IPC: H04L9/30

CPC classification number: H04L9/0662 ,  G06F7/523 ,  H04L9/3247 ,  H04L2209/56

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20080046310A1

公开(公告)日：2008-02-21

申请号：US11596548

申请日：2005-05-18

Applicant: Sebastien Canard ,  Marc Girault ,  Jacques Traore

Inventor： Sebastien Canard ,  Marc Girault ,  Jacques Traore

IPC: H04L9/00 ,  G06F11/00

CPC classification number: H04L9/3255 ,  H04L2209/42 ,  H04L2209/463 ,  H04L2209/56

Abstract: The invention relates to a method for generating a list signature for a message to be signed, said method comprising steps which are carried out by an electronic material support of a member of a list. During said step, the electronic material support only generates an electronic signature according to a sequence number supplied to the electronic material support by a certifying authority, according to evidence of belonging to the list of members, to data relating to the electronic material support, and optionally to a key of an authority qualified to lift the anonymity of the generated signature.

Abstract translation: 本发明涉及一种用于生成要签名的消息的列表签名的方法，所述方法包括由列表的成员的电子资料支持来执行的步骤。 在所述步骤期间，电子材料支持仅根据由认证机构提供给电子资料支持的序列号，根据成员名单的证据，产生与电子资料支持有关的数据的电子签名，以及 可选地具有授权提升生成的签名的匿名性的机构的密钥。

公开(公告)号：US07284122B2

公开(公告)日：2007-10-16

申请号：US10221692

申请日：2001-03-19

Applicant: Henri Gilbert ,  Marc Girault

Inventor： Henri Gilbert ,  Marc Girault

IPC: H04L9/00

CPC classification number: G07F7/1008 ,  G06Q20/341 ,  G06Q20/40975 ,  H04L9/3263 ,  H04L2209/04 ,  H04L2209/56

Abstract: A cryptographic method of protection against fraud in transactions between an application and an electronic chip of a user. Both the electronic chip and the application compute a certificate (Sp, S) which is the result of applying a non-linear function f to a list of arguments (e1, e2) comprising at least a seed R and a secret key KO. A second secret key K′ which is known only to the electronic chip and to the application is allocated to and kept secret in the electronic chip. Upon each authentication of the electronic chip, a mask M is determined by computing it from at least a portion of the secret key K′. The value of the certificate (Sp) is masked by means of the mask M to make available to the application only the masked value of the certificate (Spm). The application is used to verify the masked value of the certificate (Spm) computed by the electronic chip.

Abstract translation: 一种在用户的应用程序和电子芯片之间的交易中防止欺诈的加密方法。 电子芯片和应用程序都计算证书（Sp，S），其是将非线性函数f应用于参数列表（e1，...，＆lt; SUB>）至少包括种子R和密钥KO。 仅将电子芯片和应用程序所知的第二秘密密钥K'分配给电子芯片并保密。 在电子芯片的每次认证时，通过从秘密密钥K'的至少一部分计算掩码M来确定掩码M. 证书（Sp）的值通过掩码M进行掩码，使应用程序只能使用证书的掩蔽值（Spm）。 该应用程序用于验证由电子芯片计算的证书（Spm）的屏蔽值。

公开(公告)号：US20050220298A1

公开(公告)日：2005-10-06

申请号：US10499563

申请日：2002-12-16

Applicant: Marc Girault ,  Jean-Jacques Quisquater

Inventor： Marc Girault ,  Jean-Jacques Quisquater

IPC: G09C1/00 ,  H04L9/32 ,  H04K1/00

CPC classification number: H04L9/302 ,  H04L9/3218 ,  H04L2209/56 ,  H04L2209/80

Abstract: The invention concerns a cryptographic method whereby a second entity (B) verifies by means of a public key, a proof provided by a first entity (A), which consists in the generation by the first entity (A) of a first random number r much higher than any first integer s included in a private key kept secret by the first entity (A). The first entity (A) generates a first element of proof resulting from a modulo n exponentiation of a first integer G included or not in said public key and whereof the exponent is the first random number r. In combination with the first element of proof, a so-called common number, is generated so that the second entity (B) and the first entity (A) should have knowledge of the common number. The first entity (A) generates an image y of said private key by linear combination of the first random number r and of at least a first private key integer s. At least a multiplicative coefficient of the linear combination is said common number. Any one entity generates a second element of proof Y equal to a power modulo n of a second integer G included or not in said public key and whereof the exponent is the image y of said common number, and sends the second element of proof Y to the first entity (B). The second entity (B) verifies whether the first element of proof is in conformity with a product modulo n of a power of the second element of proof Y whereof the exponent is a third integer e and of a power of a fourth integer v included in said public key whereof the exponent is said common number c.

Abstract translation: 本发明涉及一种加密方法，其中第二实体（B）通过公开密钥来验证由第一实体（A）提供的证明，其包括由第一实体（A）生成第一随机数r 比包含在由第一实体（A）保密的私钥中的任何第一整数高得多。 第一实体（A）产生由包括或不包括在所述公共密钥中的第一整数G的模n取幂产生的证明的第一元素，并且其中指数是第一随机数r。 结合第一个证明要素，产生所谓的公共号码，使得第二实体（B）和第一实体（A）应该具有公共号的知识。 第一实体（A）通过第一随机数r和至少第一私钥整数s的线性组合产生所述私钥的图像y。 至少线性组合的乘法系数是所述公共数。 任何一个实体生成等于包括或不包含在所述公共密钥中的第二整数G的幂模n的第二校验元素Y，并且其中指数是所述公用号的图像y，并且将第二检验要素Y发送到 第一个实体（B）。 第二实体（B）验证第一个证据元素是否符合第二个证据元素Y的权力的乘积n，其中指数是第三个整数e，第四个整数v包含在第四个整数v的幂中 所谓的公钥是指数的公共号码c。

公开(公告)号：US5555307A

公开(公告)日：1996-09-10

申请号：US188052

申请日：1994-01-26

Applicant: Herve Le Corre ,  Marc Girault ,  Marie-Josephe Revillet

Inventor： Herve Le Corre ,  Marc Girault ,  Marie-Josephe Revillet

IPC: H04N1/32 ,  H04L9/32 ,  H04N1/44 ,  H04L9/00

CPC classification number: H04L9/3247 ,  H04L9/3234 ,  H04N1/4413 ,  H04N1/4426 ,  H04N1/4486

Abstract: Device and process for securing the transmission of telecopies or faxes and a secured telecopier or fax unit having such a security device. The device incorporating a user interface (16) permitting the establishment of a dialogue therewith and a security module (17) permitting the production and checking of digital signatures and preventing replay. The invention also relates to a fax unit including such a device and to a process for securing the transmission of faxes.

Abstract translation: 用于固定电视或传真的传输的设备和过程以及具有这种安全设备的安全的电传摄像机或传真单元。 该装置包括允许与其建立对话的用户界面（16）和允许生成和检查数字签名并防止重放的安全模块（17）。 本发明还涉及包括这种设备的传真单元和用于确保传真传输的过程。

公开(公告)号：US08352380B2

公开(公告)日：2013-01-08

申请号：US11596548

申请日：2005-05-18

Applicant: Sebastien Canard ,  Marc Girault ,  Jacques Traore

Inventor： Sebastien Canard ,  Marc Girault ,  Jacques Traore

IPC: G06Q99/00 ,  H04L9/00

CPC classification number: H04L9/3255 ,  H04L2209/42 ,  H04L2209/463 ,  H04L2209/56

Abstract: The invention relates to a method for generating a list signature for a message to be signed, said method comprising steps which are carried out by an electronic material support of a member of a list. During said step, the electronic material support only generates an electronic signature according to a sequence number supplied to the electronic material support by a certifying authority, according to evidence of belonging to the list of members, to data relating to the electronic material support, and optionally to a key of an authority qualified to lift the anonymity of the generated signature.

Abstract translation: 本发明涉及一种用于生成要签名的消息的列表签名的方法，所述方法包括由列表的成员的电子资料支持来执行的步骤。 在所述步骤期间，电子材料支持仅根据由认证机构提供给电子资料支持的序列号，根据成员名单的证据，产生与电子资料支持有关的数据的电子签名，以及 可选地具有授权提升生成的签名的匿名性的机构的密钥。

公开(公告)号：US07760884B2

公开(公告)日：2010-07-20

申请号：US10519698

申请日：2003-06-27

Applicant: Marc Girault ,  Jean-Claude Pailles

Inventor： Marc Girault ,  Jean-Claude Pailles

IPC: H04L9/08 ,  H04L9/00 ,  G06F7/38

CPC classification number: H04L9/302 ,  H04L9/3218 ,  H04L2209/56

Abstract: The cryptographic method is used in transactions for which a first entity generates, by use of a private RSA key, a proof verifiable by a second entity by use of a public RSA key associated with said private key. The public key includes an exponent and a modulus. The first entity generates a first element of proof by a calculation that can be performed independently of the transaction, and a second element of proof related to the first element of proof and which depends on a common number shared by the first and the second entities specifically for the transaction. The second entity verifies that the first element of proof is related, modulo the modulus of the public key, to a power of a generic number, with an exponent equal to a linear combination of the common number and of a product of the exponent of the public key by the second element of proof.

Abstract translation: 加密方法用于第一实体通过使用专用RSA密钥通过使用与所述私钥相关联的公共RSA密钥由第二实体验证的证明的事务中使用。 公钥包括指数和模数。 第一实体通过可以独立于事务执行的计算产生第一证明要素，以及与第一证据要素有关的第二证据要素，其依赖于第一和第二实体共有的共同数字 为交易。 第二个实体验证第一个证明要素是将公钥的模数模数化为一般数字的幂，指数等于公共数的一个线性组合， 公钥由第二要素证明。

公开(公告)号：US07673144B2

公开(公告)日：2010-03-02

申请号：US10500311

申请日：2002-12-20

Applicant: David Arditti Modiano ,  Sébastien Canard ,  Marc Girault ,  Jacques Traore

Inventor： David Arditti Modiano ,  Sébastien Canard ,  Marc Girault ,  Jacques Traore

IPC: H04L9/00

CPC classification number: H04L9/3255

Abstract: The invention concerns a system enabling a member (M) of a group (G) to produce, by means of customized data (z; K), a message (m) accompanied by a signature (8) proving to a verifier that the message originates from a member of the group (G). The invention is characterized in that the customized data is in the form of an electronic physical medium (26). Advantageously, the latter also incorporates: encrypting means (B3) for producing a customized cipher (C) from the customized data prior to the signature S of the message (m), means (B5) for producing a combination of a message m to be signed and the cipher (C) associated with said message, for example in the form of a concatenation of the message (m) with the cipher (C), and means (B6) for signing (Sig) the message (m) with the customized data (z; K) in the form of a cipher (C) associated with said message. Advantageously, the physical medium is a smart card (26) or the like.

Abstract translation: 本发明涉及使得组（G）的成员（M）能够通过定制数据（z; K）产生伴随着签名（8）的消息（m）的系统，该签名（8）向验证者证明该消息 来自该组（G）的成员。 本发明的特征在于，定制数据是电子物理介质（26）的形式。 有利地，后者还包括：用于在消息（m）的签名S之前从定制数据产生定制密码（C）的加密装置（B3），用于产生消息m的组合的装置（B5） 签名和与所述消息相关联的密码（C），例如以消息（m）与密码（C）的级联的形式，以及用于与消息（m）签名（Sig）消息（M）的装置 以与所述消息相关联的密码（C）的形式的定制数据（z; K）。 有利地，物理介质是智能卡（26）等。