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公开(公告)号：US20250045448A1
公开(公告)日：2025-02-06
申请号：US18923613
申请日：2024-10-22
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
Abstract: A method for sharing read access to a document stored on memory hardware. The method includes receiving a shared read access command from a sharor sharing read access to a sharee for a document stored on memory hardware in communication with the data processing hardware, and receiving a shared read access request from the sharee. The shared read access command includes an encrypted value and a first cryptographic share value based on a write key, a read key, a document identifier, and a sharee identifier. The method also includes multiplying the first and second cryptographic share values to determine a cryptographic read access value. The cryptographic read access value authorizes read access to the sharee for the document. The method also includes storing a read access token for the sharee including the cryptographic read access value and the encrypted value in a user read set of the memory hardware.
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公开(公告)号：US11727124B2
公开(公告)日：2023-08-15
申请号：US16623311
申请日：2018-01-12
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
IPC: G06F21/60 , G06F16/2458 , G06F3/06 , G06F12/14 , G06F21/62
CPC classification number: G06F21/602 , G06F3/064 , G06F3/067 , G06F3/0623 , G06F12/1408 , G06F16/2471 , G06F21/6227 , G06F2212/1052 , G06F2221/2123
Abstract: A method executing an instruction (300) to execute a query (q) for a data block (102) and determining whether the data block is stored in a block stash (370). When the data block is stored in the block stash during a download phase, the method includes removing the data block from the block stash, sending a fake query (304) to a distributed system (140) to retrieve a random data block stored in memory (114) of a distributed system (140), and discarding the random data block. When a current version of the data block is stored in the block stash during an overwrite phase, the method includes sending a fake query to the distributed system to retrieve another random data block stored in the memory of the distributed system, decrypting and re-encrypting the random data block with fresh randomness, and re-uploading the re-encrypted random data block onto the distributed system.
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公开(公告)号：US11574073B2
公开(公告)日：2023-02-07
申请号：US17446456
申请日：2021-08-30
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
Abstract: A method for sharing read access to a document stored on memory hardware. The method includes receiving a shared read access command from a sharor sharing read access to a sharee for a document stored on memory hardware in communication with the data processing hardware, and receiving a shared read access request from the sharee. The shared read access command includes an encrypted value and a first cryptographic share value based on a write key, a read key, a document identifier, and a sharee identifier. The method also includes multiplying the first and second cryptographic share values to determine a cryptographic read access value. The cryptographic read access value authorizes read access to the sharee for the document. The method also includes storing a read access token for the sharee including the cryptographic read access value and the encrypted value in a user read set of the memory hardware.
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公开(公告)号：US20200342118A1
公开(公告)日：2020-10-29
申请号：US16715994
申请日：2019-12-16
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
Abstract: A method for providing response-hiding searchable encryption includes receiving a search query for a keyword from a user device associated with a user. The keyword appears in one or more encrypted documents within a corpus of encrypted documents stored on an untrusted storage device. The method also includes accessing a document oblivious key-value storage (OKVS) to obtain a list of document identifiers associated with the keyword. Each document identifier in the list of document identifiers associated with a respective keyword identifier is concatenated with the keyword and uniquely identifies a respective one of the one or more encrypted documents that the keyword appears in. The method also includes returning the list of document identifiers obtained from the document OKVS to the user device.
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公开(公告)号：US10592685B2
公开(公告)日：2020-03-17
申请号：US15878871
申请日：2018-01-24
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
Abstract: A method for sharing read access to a document stored on memory hardware. The method includes receiving a shared read access command from a sharor sharing read access to a sharee for a document stored on memory hardware in communication with the data processing hardware, and receiving a shared read access request from the sharee. The shared read access command includes an encrypted value and a first cryptographic share value based on a write key, a read key, a document identifier, and a sharee identifier. The method also includes multiplying the first and second cryptographic share values to determine a cryptographic read access value. The cryptographic read access value authorizes read access to the sharee for the document. The method also includes storing a read access token for the sharee including the cryptographic read access value and the encrypted value in a user read set of the memory hardware.
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Patent Agency Ranking
公开(公告)号：US12141315B2
公开(公告)日：2024-11-12
申请号：US18159674
申请日：2023-01-25
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
Abstract: A method for sharing read access to a document stored on memory hardware. The method includes receiving a shared read access command from a sharor sharing read access to a sharee for a document stored on memory hardware in communication with the data processing hardware, and receiving a shared read access request from the sharee. The shared read access command includes an encrypted value and a first cryptographic share value based on a write key, a read key, a document identifier, and a sharee identifier. The method also includes multiplying the first and second cryptographic share values to determine a cryptographic read access value. The cryptographic read access value authorizes read access to the sharee for the document. The method also includes storing a read access token for the sharee including the cryptographic read access value and the encrypted value in a user read set of the memory hardware.
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公开(公告)号：US12050579B2
公开(公告)日：2024-07-30
申请号：US18149085
申请日：2022-12-31
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano , Mariana Raykova
CPC classification number: G06F16/2255 , G06F3/0604 , G06F3/064 , G06F3/0644 , G06F3/0659 , G06F3/0673 , G06F21/10 , G06F21/78 , H04L67/10
Abstract: A method includes executing an instruction to execute a query for a data block, the data block associated with a corresponding memory level of a logarithmic number of memory levels (li) of memory, each memory level (li) including physical memory (RAMi) residing on memory hardware of a distributed system. The method also includes retrieving a value associated with the data block from an oblivious hash table using a corresponding key, and extracting un-queried key value pairs from the oblivious hash table associated with un-queried data blocks after executing a threshold number of queries for data blocks. The method also includes a multi-array shuffle routine on the extracted key value pairs from the oblivious hash table to generate an output array containing the un-queried key value pairs.
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公开(公告)号：US20230274007A1
公开(公告)日：2023-08-31
申请号：US18312556
申请日：2023-05-04
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
CPC classification number: G06F21/602 , G06F21/6227 , H04L9/0894 , G06F2221/2107 , G06F2221/0751
Abstract: A method for providing response-hiding searchable encryption includes receiving a search query for a keyword from a user device associated with a user. The keyword appears in one or more encrypted documents within a corpus of encrypted documents stored on an untrusted storage device. The method also includes accessing a document oblivious key-value storage (OKVS) to obtain a list of document identifiers associated with the keyword. Each document identifier in the list of document identifiers associated with a respective keyword identifier is concatenated with the keyword and uniquely identifies a respective one of the one or more encrypted documents that the keyword appears in. The method also includes returning the list of document identifiers obtained from the document OKVS to the user device.
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公开(公告)号：US20230185960A1
公开(公告)日：2023-06-15
申请号：US18167490
申请日：2023-02-10
Applicant: Google LLC
Inventor： Sarvar Patel , Kevin Yeo , Giuseppe Persiano
CPC classification number: G06F21/6245 , G06F17/16 , G06F21/602 , H04L9/008
Abstract: A method includes initializing a client state on a client device be executing a private batched sum retrieval instruction to compute c sums O of data blocks from an untrusted storage device. Each computed sum O stored on memory hardware of the client device and including a sum of a corresponding subset S of exactly k data blocks. The method also includes a query instruction to retrieve a query block Bq stored on the untrusted storage device by iterating through each of the c sums O of data blocks to identify one of the c sums O that does not include the query block Bq, instructing a service to pseudorandomly partition the untrusted storage device into partitions and sum the data blocks in each partition to determine a corresponding encrypted data block sum.
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公开(公告)号：US20180314847A1
公开(公告)日：2018-11-01
申请号：US15878871
申请日：2018-01-24
Applicant: Google LLC
Inventor： Kevin Yeo , Sarvar Patel , Giuseppe Persiano
CPC classification number: G06F21/6227 , H04L9/0631 , H04L9/0819 , H04L9/085 , H04L9/0866 , H04L9/0894 , H04L9/3234 , H04L63/0435 , H04L63/062 , H04L63/08 , H04L63/10
Abstract: A method for sharing read access to a document stored on memory hardware. The method includes receiving a shared read access command from a sharor sharing read access to a sharee for a document stored on memory hardware in communication with the data processing hardware, and receiving a shared read access request from the sharee. The shared read access command includes an encrypted value and a first cryptographic share value based on a write key, a read key, a document identifier, and a sharee identifier. The method also includes multiplying the first and second cryptographic share values to determine a cryptographic read access value. The cryptographic read access value authorizes read access to the sharee for the document. The method also includes storing a read access token for the sharee including the cryptographic read access value and the encrypted value in a user read set of the memory hardware.
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