公开(公告)号：US09148411B2

公开(公告)日：2015-09-29

申请号：US14111659

申请日：2012-12-18

Applicant: Cisco Technology Inc.

Inventor： Martin Gold ,  Keith Millar ,  Harel Cain ,  David Wachtfogel ,  Michal Devir ,  Max Berman ,  Brett Walzer

IPC: H04L29/06 ,  H04L9/00

CPC classification number: H04L63/0428 ,  H04L9/002

Abstract: A Headend system including a encoder to encode input data yielding a plurality of data packets, each of the packets having a header and a payload, a post encoding processor to identify ones of the data packets having a payload with a suspected known plaintext, and modify at least some of the identified packets, and an encryption processor to encrypt at least some of the data packets yielding encrypted data packets. Related apparatus and methods are also described.

Abstract translation: 一种头端系统，包括编码器，用于编码产生多个数据分组的输入数据，每个分组具有报头和有效载荷;后编码处理器，用于识别具有可疑已知明文的有效载荷的数据分组中的一个，并修改 至少一些所识别的分组，以及加密处理器，用于加密产生加密数据分组的至少一些数据分组。 还描述了相关装置和方法。

公开(公告)号：US20140052983A1

公开(公告)日：2014-02-20

申请号：US14111659

申请日：2012-12-18

Applicant: Cisco Technology Inc.

Inventor： Martin Gold ,  Keith Millar ,  Harel Cain ,  David Wachtfogel ,  Michal Devir ,  Max Berman ,  Brett Walzer

IPC: H04L29/06

CPC classification number: H04L63/0428 ,  H04L9/002

Abstract: A Headend system including a encoder to encode input data yielding a plurality of data packets, each of the packets having a header and a payload, a post encoding processor to identify ones of the data packets having a payload with a suspected known plaintext, and modify at least some of the identified packets, and an encryption processor to encrypt at least some of the data packets yielding encrypted data packets. Related apparatus and methods are also described.

Abstract translation: 一种头端系统，包括编码器，用于编码产生多个数据分组的输入数据，每个分组具有报头和有效载荷;后编码处理器，用于识别具有可疑已知明文的有效载荷的数据分组中的一个，并修改 至少一些所识别的分组，以及加密处理器，用于加密产生加密数据分组的至少一些数据分组。 还描述了相关装置和方法。