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. 发明授权

US10230724B2 Identification method of an entity 有权
公开(公告)号：US10230724B2
公开(公告)日：2019-03-12
申请号：US15353633
申请日：2016-11-16
申请人： Safran Identity & Security
发明人： Julien Bringer , Roch Olivier Lescuyer De Chaptal-Lamure , Herve Chabanne , Eduardo Soria-Vazquez
IPC分类号： H04L29/06 , G06F17/10 , G06F21/32 , H04L9/32 , H04L9/08
摘要： A biometric identification method of an entity including computation of a matching value between biometric data of an entity u and reference biometric data u′, by application of a function F to the biometric data. A non-interactive, publicly verifiable computation method is performed wherein representation of the function is obtained by converting an arithmetic circuit into a polynomial representation. A matching value is obtained by evaluating the arithmetic circuit and the reference biometric data as inputs. Proof of correction of the computation execution of the matching values is obtained. Verification of said received proof. The function is encoded with an integer k>1 of a vector of a biometric datum on at least one input wire of the circuit. The function includes at least m scalar products. Evaluation of the circuit is iteratively computed depending on the value of m.

2. 发明授权

US10348483B2 Method for executing a cryptographic calculation and application to the classification by support vector machines 有权
公开(公告)号：US10348483B2
公开(公告)日：2019-07-09
申请号：US15418314
申请日：2017-01-27
申请人： SAFRAN IDENTITY & SECURITY
发明人： Constance Morel , Julien Bringer , Herve Chabanne
IPC分类号： G06F11/30 , G06F12/14 , H04L9/06 , G06F21/72 , H04L9/00
摘要： A method for calculating a function as a sub-function fX of a datum of a client, a sub-function fY of a datum, and a product of n indexed sub-functions fi of both data by randomly generating, n indexed invertible data ri from the set with m being a prime number, generating, for each i from 1 to n, a set for which each element is formed by a product of a datum ri with a possible result of the sub-function of two variables fi evaluated in both data, applying an oblivious transfer protocol between the client and a server so that the client recovers, for each i an intermediate datum ti equal to: ti=ri×fi(xi,Y), obtaining, by the client a result T from intermediate data such that: T=fX(X′)×Πi=1nti, obtaining, by the server a result R from inverted data such that: R=fY(Y)×Πi=1nri−1 using the results in a cryptographic application.

3. 发明授权

US10411882B2 Multiparty secure calculation method protected against a malevolent party 有权
公开(公告)号：US10411882B2
公开(公告)日：2019-09-10
申请号：US15418352
申请日：2017-01-27
申请人： SAFRAN IDENTITY & SECURITY
发明人： Constance Morel , Julien Bringer , Herve Chabanne
IPC分类号： H04L9/06 , G06F21/72 , H04L9/14 , H04L9/32 , H04L9/30
摘要： The invention proposes a method comprising the evaluation of a function F obtained by applying to n sub-functions fi a first operation, the evaluation comprising: the application of a series of calculation steps in which a first unit assumes a role of a client and a second unit assumes a role of a server, and the repetition of the series of calculation steps in which the roles of client and of server are exchanged between the units, each series of steps comprising: a) randomly generating, by the server, first data, and a second datum, b) for each sub-function fi, generating by the server a set of elements formed by: a result of fi evaluated in the data of the client and of the server, masked by a first datum, by applying the first operation between the result and the first datum, and masked by the second datum, by applying between the masked result and the second datum of a second operation different from the first and distributed relatively to the latter, c) recovering by oblivious transfer, by the client, an intermediate datum corresponding to one of the elements generated by the server, d) generating, by the server, a first result portion, by: masking each first datum with the second datum, applying to all the first masked data of the first operation, and e) generating by the client, a second result portion, by applying all the intermediate data of the first operation.

4. 发明授权

US10530583B2 Method for putting a first device in secure communication with a second device 有权
公开(公告)号：US10530583B2
公开(公告)日：2020-01-07
申请号：US15649554
申请日：2017-07-13
申请人： Safran Identity & Security
发明人： Julien Bringer
IPC分类号： H04L9/32 , H04L9/08 , H04L29/06
摘要： A method for putting a first device in secure communication with a second device. The first device generating at least one first datum dependent on a private key specific to the first device and a public key specific to the second device. The second device generating at least one second datum dependent on a private key specific to the second device associated with the second device public key, and dependent on a third datum dependent on a public datum specific to the first device. Implementing a test verifying whether the first and second data meet a predetermined condition, and putting the first device in secure communication with the second device only if the predetermined condition is met. Before generating the second datum generating the third datum so that the predetermined condition is met only if input data are identical to reference secret data associated with the second device.

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