Method and apparatus for end-to-end encryption of a data packet in a computer network
US5594869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | May 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/162
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique to facilitate decryption processing of information packets transmitted over a communication network after encryption in accordance with a specific network protocol, the details of which may be subject to later change as standards are developed or modified. Programmable registers are used in the decryption process to hold information for identifying an incoming information packet as being subject to the specific protocol and requiring decryption, and identifying a starting location of a data field to be decrypted. Specifically one programmable register contains a first offset locating an identifier field in the packet, in which a cryptographic identifier will be found if the packet is one conforming to the protocol; another programmable register contains a cryptographic identifier value that will be found in the identifier field if decryption is to be performed, and a third programmable register contains a second offset to locate the beginning of a data field to be decrypted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.