Invention Grant
- Patent Title: Privacy protecting transparency tree for device attestation
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Application No.: US17212931Application Date: 2021-03-25
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Publication No.: US11621846B2Publication Date: 2023-04-04
- Inventor: Igor Stolbikov , Rod D Waltermann , Scott Wentao Li , Ratan Ray
- Applicant: Lenovo (Singapore) Pte. Ltd.
- Applicant Address: SG Singapore
- Assignee: Lenovo (Singapore) Pte. Ltd.
- Current Assignee: Lenovo (Singapore) Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H04L9/32
- IPC: H04L9/32 ; H04L9/08 ; G06F16/901

Abstract:
A system includes a binary tree having leaf hashes. The leaf hashes include a device privacy protected index and a set of zero-knowledge commitments relating to a computer device. The system calculates the device privacy protected index using a verifiable random function such that a device entity path in the binary tree cannot reveal any information about any other device in the binary tree, and associates the set of zero-knowledge commitments with the device privacy protected index. The system then generates a privacy-protected attestation for the computer device using the device privacy protected index and the set of zero-knowledge commitments.
Public/Granted literature
- US20220311614A1 PRIVACY PROTECTING TRANSPARENCY TREE FOR DEVICE ATTESTATION Public/Granted day:2022-09-29
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