Error check code recomputation method time independent of message length
US5428629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1994 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Jun 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a data packet communications network capable of transmitting a digitally coded data packet message including an error-check code from a source node to a destination node over a selected transmission link which includes at least one intermediate node operative to intentionally alter a portion of a message to form an altered message which is ultimately routed to the destination node, a method of recomputing at the intermediate node a new error-check code for the altered message with a predetermined number of computational operations, i.e. computational time, independent of the length of the message, while preserving the integrity of the initially computed error-check code of the message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.