| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention relates to a system and a method for secure transmission of audiovisual data encapsulated according to a plurality of transport protocols to different devices connected to a network. The invention discloses a system and a method for secure transmission of an audiovisual stream formed by a set of transport packets encapsulated according to a plurality of transport protocols suitable to be transmitted to a user device compatible with one of said transport protocols, which includes generating a secure audiovisual stream from an original stream, wherein said audiovisual stream includes a set of modified transport packets different from corresponding original transport packets in modification positions; generating an additional stream of any format containing digital information suitable to restore the original audiovisual stream based on said basic stream; restoring in said receiving device the original audiovisual stream based on the secure stream as a function of said additional stream, wherein the additional stream includes said modification positions which are generated according to each transport protocol from said transport protocols.EFFECT: protecting and removing protection of an audiovisual stream depending on the hierarchy of transport protocols used to encapsulate said audiovisual content.13 cl, 4 dwg |
