Chase coding for error correction of encrypted packets with parity

Patent metadata

Field	Value
Publication number	US-8996962-B2
Application number	US-201313848624-A
Country	US
Kind code	B2
Filing date	Mar 21, 2013
Priority date	Aug 23, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

A plurality of encrypted packets having common payload data are received, wherein each of the plurality of encrypted packets includes a corresponding parity check field, and wherein a corresponding parity check syndrome for each of the plurality of encrypted packets indicates at least one bit error. A payload portion of each of the plurality of encrypted packets is decrypted to generate a plurality of decrypted payload portions. At least one chase coding technique is used to generate a corrected decrypted payload, based on at least one candidate bit error position and further based on the corresponding parity check syndrome for at least one of the plurality of encrypted packets.

First claim

What is claimed is:

1. An apparatus, comprising:
a receiver for receiving a plurality of encrypted packets having common payload data, wherein each of the plurality of encrypted packets includes a corresponding parity check field, wherein a corresponding parity check syndrome for each of the plurality of encrypted packets indicates at least one bit error;
a processing circuit coupled to the receiver to:
decrypt a payload portion of each of the plurality of encrypted packets to…

Assignees

• Broadcom Corp

Inventors

• Zopf Robert W
• Desai Prasanna
• Grunert Norbert

Classifications

• H04L9/0656

  Electricity · mapped topic

• H03M13/453 Primary

  Electricity · mapped topic

• H03M13/1515

  Electricity · mapped topic

• H03M13/1102

  Electricity · mapped topic

• H03M13/2957

  Electricity · mapped topic