-
公开(公告)号：US20210173740A1
公开(公告)日：2021-06-10
申请号：US17045980
申请日：2019-04-10
Applicant: INSTITUT MINES TELECOM
Inventor： Hana BACCOUCH , Nadia BOUKHATEM
Abstract: A method for coding (k, r) data and a method for reconstructing data are provided. The coding method includes steps consisting in: dividing an initial datum a into k data blocks ai; grouping the k data blocks into r−1 subsets Sj of data blocks; generating, for each subset Sj, a linear function gj(a) defined as a linear combination of the data blocks assigned to said subset Sj; and generating r parity functions comprising a primary parity function f0(a) as a linear combination of the k data blocks ai, and r−1 secondary parity functions, each secondary parity function fj(a) being defined as the sum of the primary parity function f0(a) and of a linear function gj(a).
-
公开(公告)号：US20210058155A1
公开(公告)日：2021-02-25
申请号：US17050358
申请日：2019-04-10
Applicant: INSTITUT MINES-TELECOM
Inventor： Ghaya REKAYA , Akram ABOUSEIF , Yves JAOUEN
IPC: H04B10/2525 , H04B10/50 , H04B10/2581
Abstract: Embodiments provide an optical transmission system comprising an optical transmitter configured to transmit data over an optical fiber transmission channel comprising a multi-core fiber, the data being carried by one or more optical signals propagating along the multi-core fiber according to a plurality of cores, each core among the plurality of cores being associated with one or more core parameters, wherein the optical transmission system comprises a core selection device configured to select a set of transmit cores among the plurality of cores according to a transmit core selection criterion, the transmit core selection criterion being related to the one or more core parameters, the optical transmitter being configured to transmit the data over the set of transmit cores.
-
公开(公告)号：US10833801B2
公开(公告)日：2020-11-10
申请号：US15568177
申请日：2016-04-27
Applicant: INSTITUT MINES-TELECOM
Inventor： Ghaya Rekaya-Ben Othman , Asma Mejri , Mohamed-Achraf Khsiba
Abstract: There is provided a method of generating a space-time block code (STBC) for encoding a digital data sequence comprising a set of independent symbols to be transmitted through a transmission channel in a communication system, the space-time block code being represented by a set of linear dispersion matrices in a linear dispersion representation, each linear dispersion matrix comprising components having complex values, the method comprising, generating at least some of the linear dispersion matrices depending on component-wise conditions related to a set of selected pairs of the linear dispersion matrices, each pair comprising a first linear dispersion matrix and a second linear dispersion matrix, said component-wise conditions comprising a component-wise condition between the components of the first linear dispersion matrix and the components of the second linear dispersion matrix.
-
公开(公告)号：US10812299B2
公开(公告)日：2020-10-20
申请号：US15580096
申请日：2016-06-07
Applicant: INSTITUT MINES-TELECOM
Inventor： Asma Mejri , Ghaya Rekaya-Ben Othman
Abstract: There is provided a decoder for decoding a data signal received through a transmission channel in a communication system, the decoder (310) comprising a symbol estimation unit (311) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal, the estimated symbols being determined from nodes of a decoding tree based on a weight metric associated with each of the node. The decoder further comprises a termination alarm monitoring unit (312) for monitoring a termination alarm depending on the current decoding computation complexity, the termination alarm being associated with a metric parameter, the symbol estimation unit being configured to reduce the weight metric of each node of the decoding tree by a quantity corresponding to a function of the metric parameter associated with the termination alarm, in response to the triggering of the termination alarm.
-
公开(公告)号：US20200313845A1
公开(公告)日：2020-10-01
申请号：US16089304
申请日：2017-03-28
Applicant: INSTITUT MINES-TELECOM
Inventor： Olivier RIOUL , Sylvain GUILLEY
Abstract: A secret key estimation device is provided for determining an estimate of at least one secret key used during a number of executions of a cryptographic function used by at least one cryptographic algorithm. The number of executions of the cryptographic function is at least equal to two. The secret key estimation device comprises an analysis unit for determining a plurality of sets of leakage traces from a side-channel information acquired during the number of executions of the cryptographic function. Each set of leakage traces corresponds to an execution of the cryptographic function and comprising at least one leakage trace. The secret key estimation device further comprises a processing unit configured to determine a statistical distribution of the acquired plurality of sets of leakage traces. The statistical distribution is dependent on a leakage function, the leakage function being represented in a basis of functions by a set of real values. The secret key estimation device is configured to determine the secret key from the statistical distribution of the plurality of sets of leakage traces using an estimation algorithm according to the maximization of a performance metric.
-
Patent Agency Ranking
116.发明授权公开(公告)号：US10439808B2
公开(公告)日：2019-10-08
申请号：US15532953
申请日：2016-01-08
Applicant: INSTITUT MINES-TELECOM
Inventor： Romain Alleaume
Abstract: A method of communicating a classical message M between a first party A and a second distant party B over a public channel F, comprises the steps of sharing a key between the parties, the shared key K comprising a short-term-secure key KS and/or a long-term-secure key KL; at A, encoding M as a quantum codeword, A using K to encode M into a first encrypted codeword belonging to a publicly known quantum code; communicating the first encrypted codeword from A to B over F whose output is a second codeword; unitarily transforming the second codeword into a third codeword by using a N-mode interferometer controlled by B, placed at the output of F and keyed by K; determining an estimate of M, at B, by performing a measurement on the third codeword and by processing the measurement using K.
-
117.发明授权公开(公告)号：US10425431B2
公开(公告)日：2019-09-24
申请号：US15516577
申请日：2015-09-30
Applicant: B<>COM , Universite de Bretagne Occidentale , Institut Mines Telecom
Inventor： David Espes , Nora Cuppens
Abstract: A method for processing an intrusion in a communication network including a plurality of node equipment, including a current node, which: discovers of a neighborhood of the current node, including assigning a resilience group to the neighboring node, according to at least one piece of information representative of a resilience level of the neighboring node to at least one type of attack; detecting an intrusion affecting at least one suspect node of the neighborhood of the current node; establishing a consensus concerning the at least one suspect node in a neighborhood by counting a number of resilience groups having detected the intrusion in the neighborhood of the suspect node and a total number of resilience groups represented in the neighborhood of the suspect node; and deciding to change a status of the suspect node based on a result of the consensus by comparison of both numbers.
-
118.发明授权公开(公告)号：US10425162B2
公开(公告)日：2019-09-24
申请号：US15651273
申请日：2017-07-17
Applicant: INSTITUT MINES-TELECOM
Inventor： Ghaya Rekaya Ben-Othman , Yves Jaouen , El-Mehdi Amhoud
Abstract: Embodiments of the invention provides a deterministic scrambler (1) arranged in a multimode optical fiber (130) for scrambling light, the light comprising a set of optical signals propagated in said multimode optical fiber according to a set of propagation modes, each propagation mode being associated with a power value, wherein the scrambler is configured to determine a permutation of said propagation modes depending on the power values associated with said propagation modes, the scrambler being configured to redistribute the optical signals according to said permutation of the propagation modes.
-
公开(公告)号：US10419474B2
公开(公告)日：2019-09-17
申请号：US15526790
申请日：2015-11-10
Applicant: INSTITUT MINES-TELECOM/TELECOM SUDPARIS
Inventor： Gustavo Gonzalez Granadillo , Hervé Debar
IPC: H04L29/06
Abstract: A method of selecting, for at least one service of an information system and depending service(s), at least one countermeasure to be implemented against at least one cyber attack, the method includes: identifying elements of the service exposed to the cyber attack(s), calculating a risk mitigation level of each countermeasure with respect to the cyber attack(s), ranking the countermeasure(s) on the basis of a parameter which is at least a function of the risk mitigation level, simulating the impact of the countermeasure(s) on the service and the depending service(s), the countermeasure to be implemented being selected at least as a function of result of the simulation.
-
120.发明授权公开(公告)号：US10326971B2
公开(公告)日：2019-06-18
申请号：US16063441
申请日：2016-12-09
Applicant: B<>COM , UNIVERSITE RENNES 1 , INSTITUT MINES TELECOM
Inventor： Cambodge Bist , Remi Cozot , Gerard Madec
Abstract: A method for processing a digital image for rendering on a display. The image includes image elements associated with color information represented in a colorimetric space having a luminance and chrominance components. The luminance component has a value in a first predetermined interval. The display can render values of luminance components included in a second predetermined interval, of greater length than the first interval. The method includes: determining information representative of image brightness perceived by an observer, based on the values of the first luminance component; calculating an expansion exponent as a function of the determined brightness information; transforming the first luminance components into second luminance components, including calculating an intermediate luminance value by applying the calculated expansion exponent to the first luminance component value and multiplying the intermediate value by the length of the second interval. The expansion exponent is a decreasing function of the determined brightness information.
-
-
-
-
-
-
-
-
-
Search Results
535
records
(took 0.034 seconds)
