Method and system of preserving privacy for usage of lightweight blockchain clients

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11303445
APP PUB NO 20200328889A1
SERIAL NO

16649148

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Abstract

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A method of preserving privacy for usage of a lightweight blockchain client in a blockchain network includes using, in a full blockchain node of the blockchain network, a trusted execution environment (TEE). A secure communication is established between the lightweight blockchain client and the TEE. The TEE receives a request from the lightweight blockchain client for at least one transaction or address of the lightweight blockchain client. The TEE obtains unspent transaction output (UTXO) information with respect to the request from the lightweight blockchain client from a UTXO database by oblivious database access using an oblivious RAM (ORAM) protocol.

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Patent Owner(s)

Patent OwnerAddress
NEC CORPORATION7-1 SHIBA 5-CHOME MINATO-KU TOKYO 108-8001

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Capkun, Srdjan Zurich, CH 21 274
Karame, Ghassan Heidelberg, DE 120 1274
Kostiainen, Kari Zurich, CH 13 228
Matetic, Sinisa Zurich, CH 4 23
Schneider, Moritz Zurich, CH 1 8
Wuest, Karl Zurich, CH 3 9

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