Method and system for secure and verifiable offline blockchain transactions
US11373179B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2019 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jul 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for performing secure, verifiable, offline blockchain transactions through a trusted execution environment and time-limited credentials includes: storing, in a trusted execution environment of a computing device, a cryptographic key pair comprised of a public key and a private key; transmitting, by a transmitter of the computing device, the public key to a gateway device in a blockchain network; receiving, by a receiver of the computing device, a time-limited credential from the gateway device; generating, by a processing device of the computing device, a blockchain data value, wherein the blockchain data value includes at least the time-limited credential, a transaction amount, and a destination address; digitally signing, by the trusted execution environment of the computing device, the generated blockchain data value using the private key; and transmitting, by the transmitter of the computing device, the signed blockchain data value to an external device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.