Method and apparatus for encryption and decryption
US6778670B1 · kind B1 · utility
3Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1999 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Aug 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for encrypting a stream of data transmitted within a frame. The method includes determining a first initialization state in a first preselected interval, and determining the first initialization state in a second preselected interval, wherein the second preselected interval is less than the first preselected interval. The method includes generating a key stream in response to determining the first initialization state in the second preselected interval, and encrypting at least one bit of the stream of data with at least one bit of the key stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.