System and method for oblivious information retrieval

US11989720B2 · kind B2 · utility

Assignee

• MOBILECOIN INC. · US

Inventors

• Christopher J. Beck · Brooks Road, US
• James Michael Cape · New York, US
• Joseph YANDLE · San Francisco, US
• Robb Walters · San Francisco, US
• Sara Drakeley HALL · Pearson, US

Key dates

• Filing date: Oct 14, 2020
• Grant date: May 21, 2024
• Expiry date: Oct 12, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L9/50
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A system and method for oblivious information retrieval are disclosed. A particular embodiment includes: a plurality of network nodes in data communication with each other via a network, each network node having a secure processing enclave, the enclave configured to include: at least one isolated memory device, processing logic isolated from operating system (OS) calls, and a remote attestation capability; and a view node in data communication with the plurality of network nodes and a transaction ledger, the view node including an account index horizontally scaled across a plurality of computing devices, the view node further configured to receive a transaction and a corresponding account hint, to decrypt the account hint, and to add a row corresponding to the transaction and the account hint to the account index.