Decryption system

Details Decryption system Decryption system

2007-10-23

2007-10-23

Vu, Kim (Department: 2135)

Cryptography

Video cryptography

C380S201000, C380S210000, C725S031000

Reexamination Certificate

active

10662585

ABSTRACT:
An apparatus for manipulating a selectively encrypted data stream in a manner consistent with certain embodiments has a filter that selects a set of packets from the selectively encrypted data stream based upon packet identifier values to produce a stream of packets having clear packets and encrypted packets. A packet substituter inserts a clear version of the encrypted packets into the stream of packets in place of the encrypted packets to produce a stream of clear data. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract without departing from the invention.

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