Title:
DTCP CONVERTER FOR HLS
Document Type and Number:
WIPO Patent Application WO/2014/205450
Kind Code:
A3
Abstract:
A method for DTCP to HLS conversion is provided that starts with a standard DTCP Protected Content Packet (PCP) structure. The PCP payload data is chunked at defined chunk boundaries. Each chunk is then appended with a pad to be compatible with HLS. An HLS playlist is then provided using the PCP header with identification of the chunks and a keytag. The chunk is encrypted with a DTCP key calculated by the DTCP standard using: (a) copy control bits; (b) a nonce, and (c) an exchange key ID. Relevant PCP header fields are provided in the keytag for the HLS playlist supporting the transaction that enables calculation of the DTCP content key to enable later decryption of the chunks. The system further provides a revised HLS GET for DLNA to enable trick play seek operations to be performed on the converted HLS.
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Inventors:
MORONEY PAUL (US)
MANGALORE GEETHA (US)
FRANKS WILLIAM P (US)
MANGALORE GEETHA (US)
FRANKS WILLIAM P (US)
Application Number:
PCT/US2014/043728
Publication Date:
February 19, 2015
Filing Date:
June 23, 2014
Export Citation:
Assignee:
GEN INSTRUMENT CORP (US)
International Classes:
H04N21/845; H04L29/06; H04N21/2343; H04N21/266; H04N21/4363; H04N21/4402; H04N21/61; H04N21/647; H04N21/8355
Foreign References:
| US20130145406A1 | 2013-06-06 |
Other References:
"Home Networking Security Specification OC-SP-HN-SEC-I05-130418", OPENCABLE(TM) SPECIFICATIONS HOME NETWORKING, 18 April 2013 (2013-04-18), XP055138092, Retrieved from the Internet [retrieved on 20140903]
PANTOS R ET AL: "HTTP Live Streaming; draft-pantos-http-live-streaming-11.txt", HTTP LIVE STREAMING; DRAFT-PANTOS-HTTP-LIVE-STREAMING-11.TXT, INTERNET ENGINEERING TASK FORCE, IETF; STANDARDWORKINGDRAFT, INTERNET SOCIETY (ISOC) 4, RUE DES FALAISES CH- 1205 GENEVA, SWITZERLAND, 17 April 2013 (2013-04-17), pages 1 - 37, XP015091450
DTCP: "DTCP Volume 1 Supplement E Mapping DTCP to IP (Informational Version)", DTCP VOLUME 1 SUPPLEMENT E REVISION 1.4 ED3 (INFORMATIONAL VERSION), 5 June 2013 (2013-06-05), XP055137516, Retrieved from the Internet [retrieved on 20140901]
PANTOS R ET AL: "HTTP Live Streaming; draft-pantos-http-live-streaming-11.txt", HTTP LIVE STREAMING; DRAFT-PANTOS-HTTP-LIVE-STREAMING-11.TXT, INTERNET ENGINEERING TASK FORCE, IETF; STANDARDWORKINGDRAFT, INTERNET SOCIETY (ISOC) 4, RUE DES FALAISES CH- 1205 GENEVA, SWITZERLAND, 17 April 2013 (2013-04-17), pages 1 - 37, XP015091450
DTCP: "DTCP Volume 1 Supplement E Mapping DTCP to IP (Informational Version)", DTCP VOLUME 1 SUPPLEMENT E REVISION 1.4 ED3 (INFORMATIONAL VERSION), 5 June 2013 (2013-06-05), XP055137516, Retrieved from the Internet
Attorney, Agent or Firm:
WARD, Thomas A. et al. (Suwanee, Georgia, US)
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