Method and system to uniquely associate multicast content...

Details Method and system to uniquely associate multicast content... Method and system to uniquely associate multicast content...

2006-06-06

2006-06-06

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S054000, C380S200000, C380S201000, C380S203000

Reexamination Certificate

active

07058809

ABSTRACT:
Methods and systems are disclosed in which contact can be safely distributed and protected in a manner that is viable in terms of bandwidth economy and ensures that clients can be identified by the content received. Copies of encrypted content can be provided such that unique watermarks can be added to the copies. Content can also be both watermarked uniquely for multiple clients and multicasted to the clients. As such, content can be distributed using the bandwidth efficiency of multicasting while providing reliable content protection and watermarking.

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