Identity-based encryption system
US6886096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | May 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3073
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system is provided that uses identity-based encryption to support secure communications. Messages from a sender to a receiver may be encrypted using the receiver's identity and public parameters that have been generated by a private key generator associated with the receiver. The private key generator associated with the receiver generates a private key for the receiver. The encrypted message may be decrypted by the receiver using the receiver's private key. The system may have multiple private key generators, each with a separate set of public parameters. Directory services may be used to provide a sender that is associated with one private key generator with appropriate public parameters to use when encrypting messages for a receiver that is associated with a different private key generator. A certification authority may be used to sign directory entries for the directory service. A clearinghouse may be used to avoid duplicative directory entries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.