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公开(公告)号：US20240411925A1
公开(公告)日：2024-12-12
申请号：US18811166
申请日：2024-08-21
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
Abstract: Methods, systems, and apparatus, including a method for updating user consent in a verifiable manner. In some aspects, a method includes receiving, from a client device, a request including an attestation token. The attestation token includes a set of data that includes at least a user identifier that uniquely identifies a user of the client device, a token creation time that indicates a time at which the attestation token was created, user consent data specifying whether one or more entities that receive the attestation token are eligible to use data of the user, an action to be performed in response to the request. The attestation token also includes a digital signature of at least a portion of the set of data, including at least the user identifier and the token creation time. An integrity of the request is verified using the attestation token.
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公开(公告)号：US12160525B2
公开(公告)日：2024-12-03
申请号：US18417666
申请日：2024-01-19
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
Abstract: Methods, systems, and apparatus, including a method for determining network measurements. In some aspects, a method includes receiving, by a first aggregation server and from each of multiple client devices, encrypted impression data. A second aggregation server receives, from each of at least a portion of the multiple client devices, encrypted conversion data. The first aggregation server and the second aggregation server perform a multi-party computation process to decrypt the encrypted impression data and the encrypted conversion data. Each portion of decrypted impression data and each portion of decrypted conversion data is sent to a respective reporting system.
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公开(公告)号：US12111950B2
公开(公告)日：2024-10-08
申请号：US17763492
申请日：2021-02-08
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung , Andres Munoz Medina
IPC: G06F21/62 , G06F16/9535 , H04L9/32
CPC classification number: G06F21/6245 , G06F16/9535 , H04L9/3213
Abstract: A method includes receiving, by a data processing apparatus and from a content distribution system, a message comprising a probabilistic data structure representing a set of content items that should not be provided to a user device, content item data for content items available to be provided, and a request to determine whether any content item data is invalid, determining that the content item data for a given content item is invalid because the given content item may be in the set of content items represented by the probabilistic data structure, including removing the content item data for the given content item that was determined to be invalid; and preventing distribution of content items including the given content item.
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公开(公告)号：US12052227B2
公开(公告)日：2024-07-30
申请号：US17794146
申请日：2021-12-10
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
CPC classification number: H04L63/0421 , G06F21/6254
Abstract: This document describes systems and techniques for improving the integrity and protecting the security of information in content selection and distribution. In one aspect, a method includes receiving, by a first server of a secure multi-party computation (MPC) system and from an application on a client device, a request for a selection value. In response to receiving the request, the first server conducts, in collaboration with a second server of the secure MPC system, a privacy-preserving selection process and a counterfactual selection process. The first server transmits a selection result defining the first winning selection value from the privacy-preserving selection process and the second winning selection value from the counterfactual selection process and receives, from the application on the client device, a notification indicating that a digital component corresponding to the winning selection value from the privacy-preserving selection process was presented at the client device.
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公开(公告)号：US12010106B2
公开(公告)日：2024-06-11
申请号：US18341353
申请日：2023-06-26
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
CPC classification number: H04L63/0442 , H04L9/0833 , H04L9/085 , H04L9/3093 , H04L9/3257
Abstract: Methods, systems, and apparatus, including a method for preventing fraud. In some aspects, a method includes: receiving, from multiple client devices, a measurement data element that includes a respective group member key and a group identifier for a given conversion as a result of displaying a digital component. Each client device uses a threshold encryption scheme to generate, based at least on network data that includes one or more of impression data or conversion data for the conversion, a group key that defines a secret for encrypting the network data and generate, based on data related to the application, the respective group member key that includes a respective share of the secret. In response to determining that at least the threshold number of measurement data elements having the same group identifier have been received, the network data is decrypted using the group member keys in the received measurement data elements.
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Patent Agency Ranking
公开(公告)号：US20240187420A1
公开(公告)日：2024-06-06
申请号：US18443065
申请日：2024-02-15
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
CPC classification number: H04L63/123 , H04L9/3247
Abstract: Methods, systems, and apparatus, including an apparatus for verifying the integrity of requests. In some aspects, a method includes receiving, from an application, a request including an attestation token of the application. The attestation token includes a set of data that includes at least a public key of the application and a token creation time that indicates a time at which the attestation token was created. The attestation also includes a signature of the set of data. The signature is generated using a private key that corresponds to the public key. The integrity of the request is verified using the attestation token. The verification includes determining that the integrity of the request is valid based on a determination that the token creation time is within a threshold duration of the time at which the request was received and a determination that the set of data has not been.
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公开(公告)号：US11949688B2
公开(公告)日：2024-04-02
申请号：US17426743
申请日：2020-08-13
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
CPC classification number: H04L63/123 , H04L9/3247
Abstract: Methods, systems, and apparatus, including an apparatus for verifying the integrity of requests. In some aspects, a method includes receiving, from an application, a request including an attestation token of the application. The attestation token includes a set of data that includes at least a public key of the application and a token creation time that indicates a time at which the attestation token was created. The attestation also includes a signature of the set of data. The signature is generated using a private key that corresponds to the public key. The integrity of the request is verified using the attestation token. The verification includes determining that the integrity of the request is valid based on a determination that the token creation time is within a threshold duration of the time at which the request was received and a determination that the set of data has not been.
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公开(公告)号：US11917078B2
公开(公告)日：2024-02-27
申请号：US17418453
申请日：2020-12-11
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
CPC classification number: H04L9/3257 , H04L9/0822 , H04L9/0825 , H04L9/14
Abstract: Methods, systems, and apparatus, including a method for determining network measurements. In some aspects, a method includes receiving, by a first aggregation server and from each of multiple client devices, encrypted impression data. A second aggregation server receives, from each of at least a portion of the multiple client devices, encrypted conversion data. The first aggregation server and the second aggregation server perform a multi-party computation process to decrypt the encrypted impression data and the encrypted conversion data. Each portion of decrypted impression data and each portion of decrypted conversion data is sent to a respective reporting system.
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公开(公告)号：US20230336351A1
公开(公告)日：2023-10-19
申请号：US18341689
申请日：2023-06-26
Applicant: Google LLC
Inventor： Gang Wang , Marcel M. Moti Yung
IPC: H04L9/32 , G06F16/951
CPC classification number: H04L9/3213 , G06F16/951 , H04L9/3236 , H04L9/3247
Abstract: The present disclosure provides systems and methods for secure identification retrieval. The method includes retrieving a value of a periodic variable and calculating a plurality of query tokens from a corresponding plurality of client device identifiers and the value of the periodic variable. Each query token is associated with a corresponding client device identifier in a first database. The method further includes receiving a first query token calculated from a client device identifier of the first client device and the value of the periodic variable and identifying a second query token of the calculated plurality of query tokens in the first database matching the first query token. The method further includes, responsive to the identification, retrieving the associated client device identifier and retrieving one or more characteristics of the first client device according to the associated client device identifier. The method further includes transmitting the retrieved one or more characteristics.
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公开(公告)号：US20230155820A1
公开(公告)日：2023-05-18
申请号：US17916871
申请日：2022-03-07
Applicant: Google LLC
Inventor： Gang Wang , Sarvar Patel , Marcel M. Moti Yung , Karn Seth , Kevin Wei Li Yeo , Benjamin Kreuter , Mariana Raykova , Tancrède Lepoint
IPC: H04L9/08
CPC classification number: H04L9/085 , H04L2209/466
Abstract: This document relates to using secure MPC to select digital components in ways that preserve user privacy and protects the security of data of each party that is involved in the selection process. In one aspect, a method includes receiving, by a first computing system of a secure MPC system and from a client device, a digital component request and a nonce. The first computing system generates, based on the nonce and a function, an array including a share of a Bloom filter representing user group identifiers for user groups that include a user of the client device as a member. For each of multiple user group identifiers, the first computing system calculates, in collaboration with one or more second computing systems of the secure MPC system and using the array, a respective first secret share of one or more user group membership condition parameters.
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