Covert channel construction method in blockchain network
US11509489B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2022 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jun 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A covert channel construction method in a blockchain network includes: sharing, by a first terminal and a second terminal, a secret key and transaction information, and generating a blockchain network address by using the secret key and a standard public key address generation algorithm, wherein the transaction information comprises a permutation mapping table and an information capacity of a single transaction; sending, by the first terminal, information by using an information hiding method, and performing simultaneously, by the first terminal and the second terminal, transaction recording; and monitoring, by the first terminal and the second terminal, whether an account transaction of the blockchain network address exists in a blockchain, if yes, extracting, by the second terminal, the information by using an information extraction method, and after extracting the information, replying to the information by using the information hiding method, thereby enabling communication parties to safely transmit information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.