专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070260882A1 Method for Secure Delegation of Calculation of a Bilinear Application 有权
标题翻译：用于双线性应用计算的安全授权方法
公开(公告)号：US20070260882A1
公开(公告)日：2007-11-08
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X＆lt; a＆gt;和＆lt; b＆gt;的计算; 向计算服务器提供两个数字X ^{a和/或SUP> b ; 由所述服务器计算f（X ^{a ，Y ）; 从服务器接收f（X ^{a ，Y ）的值; 提取f（X ， B）的ab 根。}}}

2. 发明申请

US20080137844A1 Method and Device for Performing a Cryptographic Operation 有权
标题翻译：执行加密操作的方法和设备
公开(公告)号：US20080137844A1
公开(公告)日：2008-06-12
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： H04L9/30
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。

3. 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。

4. 发明申请

US20110142226A1 METHOD OF GENERATING PSEUDO-RANDOM BIT STRINGS 审中-公开
标题翻译：生成伪随机字符串的方法
公开(公告)号：US20110142226A1
公开(公告)日：2011-06-16
申请号：US12599716
申请日：2008-05-12
申请人： David Lefranc , Philippe Painchault
发明人： David Lefranc , Philippe Painchault
IPC分类号： H04L9/28
CPC分类号： G06F7/582 , H04L9/0662
摘要： Method for generating pseudo-random bit strings in a system in which the data interchanges between a first user and a second user are protected, characterized in that it comprises at least the following steps: using an application fk of output size n bits, determining a value x and, from this value x and by applying the application fk, generating t values vi, from the t values vi and, from u*t coefficients, determining u blocks Si containing pseudo-random characters. Applicable to the coding or authentication domain.
摘要翻译：用于在第一用户和第二用户之间的数据交换的系统中生成伪随机比特串的方法被保护，其特征在于，其至少包括以下步骤：使用输出大小n比特的应用f k，确定值x，并且从该值x，并通过应用应用fk，从t值vi和从u * t系数生成t值vi，确定包含伪随机字符的u块Si。适用于编码或认证域。

5. 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。

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