DLNA/DTCP STREAM CONVERSION FOR SECURE MEDIA PLAYBACK

摘要

A process for converting a DTCP-IP transport stream into HLS format, comprising receiving an encrypted DTCP-IP transport stream comprising DTCP frames at a secondary device from a source device, with each of the plurality of DTCP frames comprising encrypted 16-byte portions, forming chunks from the DTCP frames by grouping encrypted 16-byte portions into a chunk, adding HLS padding bytes to the end of each chunk and encrypting the HLS padding bytes to form an encrypted chunk, loading each of the encrypted chunks and a playlist to a media proxy server at the secondary device, loading a DTCP key onto a security proxy server, and providing the playlist, each of the encrypted chunks, and the DTCP key to a native media player on the secondary device, such that the native media player follows the playlist to decrypt the encrypted chunks using the DTCP key and plays back the chunks.

主权项

1. A process for converting a DTCP-IP transport stream into HLS format, comprising:
receiving an encrypted DTCP-IP transport stream at a secondary device from a source device, said encrypted DTCP-IP transport stream comprising a plurality of DTCP frames, each of said plurality of DTCP frames comprising a plurality of encrypted 16-byte portions; forming chunks from one of said plurality of DTCP frames by grouping one or more of its plurality of encrypted 16-byte portions into a chunk; adding HLS padding bytes to the end of said chunk and encrypting said HLS padding bytes, such that said chunk and the encrypted HLS padding bytes form an encrypted chunk; loading each of said encrypted chunks, and a playlist of said encrypted chunks, to a media proxy server at said secondary device; loading a DTCP key onto a security proxy server at said secondary device, said DTCP Key having been obtained from said source device; and providing said playlist, each of said encrypted chunks, and said DTCP key to a native media player on said secondary device, such that said native media player follows said playlist to decrypt said encrypted chunks using said DTCP key and plays back said chunks.