Patent ID: 8270608
Filing Date: 2012-09-18
Classification: H04L

Abstract:
1. A receiver comprising: a controller adapted to receive a data packet within a code stream, and transmit the data packet to a sub-network security layer; a decryption engine adapted to decrypt the data packet, data packet containing a checksum and a payload, the checksum included in a header of the data packet and based upon the payload, the decrypting accomplished using a forward cipher key; a checksum generator configured to calculate a calculated checksum for the data packet; and a checksum validation engine configured to compare the calculated checksum with the checksum extracted from the decrypted data packet to determine the integrity of the data packet; wherein the controller resets the code stream upon a determination that the integrity of the data packet is compromised, and wherein the controller transmits the data packet to a network layer upon a determination that the integrity of the data packet is not compromised.