公开(公告)号：US10680799B2

公开(公告)日：2020-06-09

申请号：US16189126

申请日：2018-11-13

Applicant: ABB Schweiz AG

Inventor： Johannes Schneider ,  Matus Harvan ,  Sebastian Obermeier ,  Thomas Locher ,  Yvonne-Anne Pignolet

IPC: H04L9/00

Abstract: The application relates to a method for aggregation of a performance indicator of a device including: concatenating a respective first data item to a plurality of second data items in the device; encrypting the plurality of concatenated second data items relevant for computing the performance indicator using a first encryption key in the device, wherein the first encryption key is based on an additive homomorphic encryption scheme; sending the encrypted concatenated second data items to a computation cluster; computing the performance indicator on the computation cluster using the encrypted concatenated second data items and computing an aggregate value regarding the performance indicator by summing up the encrypted concatenated second data items; sending the aggregate value to a server of a service provider of the device; decrypting the aggregate value using a second encryption key on the server of the service provider; and verifying the decrypted result by checking whether the decrypted sum computed by summing up the encrypted concatenated second data items comprises a predetermined value. The present application also relates to a corresponding system and corresponding computer program product including one or more computer readable media having computer executable instructions for performing the steps of the method.

公开(公告)号：US20180349740A1

公开(公告)日：2018-12-06

申请号：US16055705

申请日：2018-08-06

Applicant: ABB Schweiz AG

Inventor： Johannes Schneider ,  Matus Harvan ,  Sebastian Obermeier ,  Thomas Locher ,  Yvonne-Anne Pignolet

IPC: G06K9/62 ,  H04L9/00 ,  H04L9/06 ,  G06F15/18 ,  G06F17/18

CPC classification number: H04L9/008 ,  H04L2209/46 ,  H04L2209/76

Abstract: A method for evaluating data is based on a computational model, the computational model comprising model data, a training function and a prediction function. The method includes training the computational model by: receiving training data and training result data for training the computational model, and computing the model data from the training data and the training result data with the training function. The method includes predicting result data by: receiving field data for predicting result data; and computing the result data from the field data and the model data with the prediction function. The training data may be plaintext and the training result data may be encrypted with a homomorphic encryption algorithm, wherein the model data may be computed in encrypted form from the training data and the encrypted training result data with the training function. The field data may be plaintext, wherein the result data may be computed in encrypted form from the field data and the encrypted model data with the prediction function.

公开(公告)号：US11018857B2

公开(公告)日：2021-05-25

申请号：US15872201

申请日：2018-01-16

Applicant: ABB Schweiz AG

Inventor： Johannes Schneider ,  Matus Harvan ,  Roman Schlegel ,  Sebastian Obermeier ,  Thomas Locher

IPC: H04L9/08 ,  H04L9/00 ,  H04L9/14

Abstract: The present invention discloses a method for computing a secret value including a first secret using a function including an operation, comprising: computing, by a host, a first encrypted value of the first secret with a first key; sending, by the host, the first encrypted value to a value holder and the first key to a key holder, wherein the value holder and the key holder are independently trusted by the host; computing, by the value holder, a computed encrypted value from the first encrypted value using the function; and computing, by the key holder, a computed key from the first key using the function.

公开(公告)号：US20200228324A1

公开(公告)日：2020-07-16

申请号：US16743521

申请日：2020-01-15

Applicant: ABB Schweiz AG

Inventor： Thomas Locher ,  Carsten Franke ,  Sebastian Obermeier ,  Yvonne-Anne Pignolet

IPC: H04L9/06 ,  H04L9/32 ,  H04L29/08

Abstract: A method for offering data with objects to be performed on the basis of the data, providing solutions to the problems and verifying the provided solutions. The method including the steps of providing a digital platform; uploading the data with the object as challenge to the platform; uploading a smart contract relating to the challenge to the platform; transferring the challenge from the platform to at least one solution provider; uploading a signed hash of the solution provider's solution of the challenge to the platform; uploading the solution provider's solution of the challenge to the platform; and evaluating at the platform the uploaded solution based on predefined conditions.

公开(公告)号：US20190089526A1

公开(公告)日：2019-03-21

申请号：US16189108

申请日：2018-11-13

Applicant: ABB Schweiz AG

Inventor： Thomas Locher ,  Johannes Schneider ,  Matus Harvan ,  Sebastian Obermeier ,  Yvonne-Anne Pignolet

IPC: H04L9/06 ,  H04L9/00 ,  H04L9/30

Abstract: The application relates to a method for computing a probabilistic encryption scheme for encrypting a data item in an electronic device including: computing a plurality of random bit strings in a computation cluster; sending the computed plurality of random strings to the electronic device; generating a random string (rE) for using in the encryption scheme in the electronic device using a subset of the plurality of the random strings computed in the computation cluster and encrypting the data item using the random string computed in the electronic device. The present application also relates to a corresponding system and corresponding computer program product including one or more computer readable media having computer executable instructions for performing the steps of the method.

公开(公告)号：US20180227121A1

公开(公告)日：2018-08-09

申请号：US15872201

申请日：2018-01-16

Applicant: ABB Schweiz AG

Inventor： Johannes Schneider ,  Matus Harvan ,  Roman Schlegel ,  Sebastian Obermeier ,  Thomas Locher

IPC: H04L9/08 ,  H04L9/14 ,  H04L9/00

CPC classification number: H04L9/0861 ,  H04L9/008 ,  H04L9/14 ,  H04L2209/46

Abstract: The present invention discloses a method for computing a secret value including a first secret using a function including an operation, comprising: computing, by a host, a first encrypted value of the first secret with a first key; sending, by the host, the first encrypted value to a value holder and the first key to a key holder, wherein the value holder and the key holder are independently trusted by the host; computing, by the value holder, a computed encrypted value from the first encrypted value using the function; and computing, by the key holder, a computed key from the first key using the function.