Method and system for backing up private key of electronic signature token
US9742565B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2014 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Apr 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided are a method and system for backing up a private key in an electronic signature token, the method comprising: a first electronic signature token and a second electronic signature token negotiate an encryption strategy and a corresponding decryption strategy to use for communication therebetween; the first electronic signature token utilizes the encryption strategy to encrypt a request data packet and transmits the encrypted request data packet; the second electronic signature token decrypts the encrypted request data packet; the second electronic signature token utilizes the encryption strategy to encrypt a response data packet and transmits the encrypted responses data packet; and the first electronic signature token utilizes the decryption strategy to decrypt the response data packet, and acquires a private key from the response data packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.