H - Electricity – 04 – K
Patent
H - Electricity
04
K
H04K 1/00 (2006.01) H04L 29/06 (2006.01)
Patent
CA 2045933
68061-98 METHOD AND APPARATUS FOR DECRYPTION OF AN INFORMATION PACKET HAVING A FORMAT SUBJECT TO MODIFICATION ABSTRACT OF THE DISCLOSURE A technique to facilitate decryption process- ing of information packets transmitted over a communica- tion network after encryption in accordance with a spe- cific network protocol, the details of which may be subject to later change as standards are developed or modified. Programmable registers are used in the decryp- tion process to hold information for identifying an in- coming information packet as being subject to the speci- fic 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 pro- grammable 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 begin- ning of a data field to be decrypted.
Gupta Amar
Hawe William R.
Lampson Butler W.
Digital Equipment Corporation
Gupta Amar
Hawe William R.
Lampson Butler W.
Smart & Biggar
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