System and method for using a streaming protocol

Cryptography – Communication system using cryptography – Time segment interchange

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C380S036000, C380S200000, C380S210000, C380S239000, C386S349000, C386S349000, C713S150000

Reexamination Certificate

active

07602908

ABSTRACT:
An initialization vector (IV) is employed to decrypt a block of a stream that has been encrypted with Cypher Block Chaining (CBC) encryption, without requiring decryption of previous blocks within the stream. For example, a listener who accesses a distribution point to retrieve encrypted content authenticates himself to an application server that regulates access to encrypted content on the distribution point, and responsively receives a key. The listener then requests access to a reference point within the encrypted content stream somewhere after its beginning (e.g., using preview clips). The distribution point relates the reference point to a corresponding block of the encrypted stream, and identifies an IV previously used for encryption of that block. The distribution point provides the associated encrypted block of content and the IV to the listener to enable mid-stream rendering of the encrypted content, without requiring the listener to decrypt previous blocks within the encrypted stream.

REFERENCES:
patent: 7095945 (2006-08-01), Kovacevic
patent: 2001/0033656 (2001-10-01), Gligor et al.
patent: 2002/0174366 (2002-11-01), Peterka et al.
patent: 2003/0123665 (2003-07-01), Dunstan et al.
patent: 2003/0188320 (2003-10-01), Shing
patent: 2005/0100161 (2005-05-01), Husemann et al.
the International Search Report and Written Opinion from International Application No. PCT/USO4/42857, dated Jun. 17, 2005, 12 pages.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System and method for using a streaming protocol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for using a streaming protocol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for using a streaming protocol will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4074511

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.