Known plaintext attack protection
US9148411B2 · kind B2 · utility
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1References
16Claims
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Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/002
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Headend system including a encoder to encode input data yielding a plurality of data packets, each of the packets having a header and a payload, a post encoding processor to identify ones of the data packets having a payload with a suspected known plaintext, and modify at least some of the identified packets, and an encryption processor to encrypt at least some of the data packets yielding encrypted data packets. Related apparatus and methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.