Stephen C Loomis

US Patent:

7602908, Oct 13, 2009

Filed:

Dec 22, 2004

Appl. No.:

11/019124

Inventors:

David F Pare - San Francisco CA, US
David L. Biderman - San Francisco CA, US
Stephen Loomis - Leesburg VA, US
Scott K. Brown - Ashburn VA, US
Michael Wise - Washington DC, US
David Wexelblat - Vienna VA, US
Conor P. Cahill - Waterford VA, US
David S. Bill - San Francisco CA, US

Assignee:

AOL LLC - Dulles VA

International Classification:

H04K 1/04
H04N 7/00
H04N 5/913
H04N 7/167
H04L 9/18

US Classification:

380 37, 380 36, 380200, 380210, 380239, 386 20, 386 94, 713150

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.

US Patent:

7734042, Jun 8, 2010

Filed:

Dec 22, 2004

Appl. No.:

11/019110

Inventors:

David F. Pare - San Francisco CA, US
David L. Biderman - San Francisco CA, US
Stephen E. Loomis - Leesburg VA, US
Scott K. Brown - Ashburn VA, US
Michael Wise - Washington DC, US
David Wexelblat - Vienna VA, US
Conor P. Cahill - Waterford VA, US
David S. Bill - San Francisco CA, US

Assignee:

AOL Inc. - Dulles VA

International Classification:

H04K 1/00
H04L 9/00
H04N 7/167

US Classification:

380 37, 380 28, 380 44, 380201

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.

US Patent:

7912920, Mar 22, 2011

Filed:

Oct 16, 2003

Appl. No.:

10/688283

Inventors:

Stephen Loomis - Redwood City CA, US
David Biderman - San Francisco CA, US
Simon Gibson - Washington DC, US
Thomas Pepper - Boulder Creek CA, US
Andrew Dickson - San Francisco CA, US

International Classification:

G06F 15/16

US Classification:

709219, 709203, 709231, 709232

Abstract:

The stream sourcing content delivery system goes to a database and builds a physical stream, based on a schedule. The stream source content delivery system works at a station ID (SID), finds the order of the delivery of content for the station based upon the schedule, and downloads a plurality of music files to its hard drive to enable play back. The stream source content delivery system then concatenates the files, to create stream, and awaits the request of one or more stream recipients. Some preferred system embodiments further comprise a fail-safe mode, whereby a loop of music is generated from the downloaded stream, and is delivered to one or more users when further access to content is interrupted, such that recipients experience an uninterrupted delivery of a plurality of files, e. g. songs.

US Patent:

8284931, Oct 9, 2012

Filed:

May 24, 2010

Appl. No.:

12/786129

Inventors:

David F. Pare - San Francisco CA, US
David L. Biderman - San Francisco CA, US
Stephen E. Loomis - Leesburg VA, US
Scott K. Brown - Ashburn VA, US
Michael Wise - Washington DC, US
David Wexelblat - Vienna VA, US
Conor P. Cahill - Waterford VA, US
David S. Bill - San Francisco CA, US

Assignee:

Facebook, Inc. - Menlo Park CA

International Classification:

H04K 1/00
H04L 9/00
H04N 7/167

US Classification:

380 37, 380 28, 380 44, 380201

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.

US Patent:

8634552, Jan 21, 2014

Filed:

Oct 9, 2009

Appl. No.:

12/576784

Inventors:

David F. Pare - San Francisco CA, US
David L. Biderman - San Jose CA, US
Stephen Loomis - Leesburg VA, US
Scott K. Brown - Marietta GA, US
Michael Wise - Washington DC, US
David Wexelblat - Vienna VA, US
Conor P. Cahill - Waterford VA, US
David S. Bill - San Francisco CA, US

Assignee:

AOL Inc. - Dulles VA

International Classification:

H04K 1/04
H04L 9/00
H04N 7/169

US Classification:

380 37, 380 42, 380210, 380239

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.

US Patent:

20130173921, Jul 4, 2013

Filed:

Sep 14, 2012

Appl. No.:

13/618874

Inventors:

DAVID F. PARE - San Francisco CA, US
DAVID L. BIDERMAN - San Francisco CA, US
STEPHEN E. LOOMIS - Leesburg VA, US
SCOTT K. BROWN - Ashburn VA, US
MICHAEL WISE - Washington DC, US
DAVID WEXELBLAT - Vienna VA, US
CONOR P. CAHILL - Waterford VA, US
DAVID S. BILL - San Francisco CA, US

International Classification:

H04L 9/08

US Classification:

713168

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.