Decryption of retransmitted data in an encrypted communication system
US5809148A · kind A · utility
20Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1809
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method generally includes the steps of receiving (201) a message (100) comprising a message indicator (101) and a plurality of encrypted blocks (103 through 111). When at least one block of the plurality of encrypted blocks is received with error, a second message is transmitted (215), which second message requests a retransmission of the at least one block. Upon receiving the retransmission of the at least one block without error, a keystream is generated (219) from the message indicator and the at least one block is decrypted using the keystream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.