Key sharing method, secret key generating method, common key generating method and cryptographic communication method in ID-NIKS cryptosystem
US7239701B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3073
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Mapping is carried out at a point on an elliptic curve to be utilized for elliptic encryption based on identity information (ID information) of each entity and a mapping value is set to be a public key of the entity. By using the mapping value and secret information, a secret key of each entity is generated. The entity generates a common key to be used for an encrypting process and a decrypting process by utilizing the self-secret key and the public key to be the mapping value obtained by mapping at a point on the elliptic curve based on ID information of a communication participate. In this case, pairing on the elliptic curve is utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.