System and method for using a streaming protocol
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United States of America Patent
Stats
-
Nov 10, 2015
Grant Date -
Mar 27, 2014
app pub date -
Dec 2, 2013
filing date -
Dec 22, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H04L Class
- 7.42 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 10, 2027 |
