System and method for cryptographic key exchange using matrices
US8621227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jul 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0844
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Two parties can establish a cryptographic key using a matrix based key exchange protocol, for secure communications without any prior distribution of secret keys or other secret data, and without revealing said key to any third party who may have access to all of the transmissions between them. A common matrix M, shared in advance, is multiplied by a random matrix K on the sending side, and a different random matrix N on the receiving side. The matrix product KM is sent from the sending side to the receiving side, and the matrix product MN is sent from the receiving side to the sending side. Both sides produce the common matrix product KMN, and use it for producing a symmetric key for encrypted communications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.