Method and implementation for information exchange using Markov models
US8848904B2 · kind B2 · utility
3Cited by
10References
20Claims
0Family size
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Key dates
| Filing date | Oct 23, 2009 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Dec 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/26613
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The replacement of secret keys is a central problem in key management. Typical solutions exchange handshaking messages, involve complex computations, or require the cooperation of trusted third parties. Disclosed herein is a key replacement method that exploits the randomness of Markov models to efficiently provide fresh keys to users. Unlike other methods, the proposed method removes the need for extra communications, intensive computation, or third parties. It is demonstrated that the proposed method has perfect forward secrecy as well as resistance to known-key attacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.