Method of implementing a key recovery system
US6654465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of generating a recovery key encryption key (RKEK) in a secure manner by an integrated circuit (IC) and a key recovery escrow agent includes the steps of generating by the IC a first number having a private component and a public component, and generating by the escrow agent a second number having a private component and a public component. The public component of the first number is provided to the escrow agent, and the public component of the second number is provided to the integrated circuit. A Diffie-Hellman modulo-exponentiation mathematical operation is performed by the integrated circuit using the private component of the first number, the public component of the first number and the public component of the second number to create the RKEK. A similar operation is performed by the escrow agent using the private component of the second number, the public number of the second number and the public component of the first number to create the RKEK at its end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.