Efficient media stream encryption providing full content protection
AssigneeDISH Network Technologies India Private Limited
InventorsAmit Kumar, Ankit Gandhi, Himanshu Jain
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Abstract
Various systems, methods and devices are presented for performing media encryption. A media stream comprising video packets can be received. A chunk of the media stream can be sorted to create a first group of a plurality of audio packets with an I-frame header and a second group of a plurality of P-frames and an I-frame payload. The first group can be encrypted while the second group is not encrypted. A fully-protected output media stream that includes the encrypted first group and the second group can then be streamed to a remote device via a network for output.
Claims20
A media encryption system, comprising:
- a media input interface, wherein the media input interface is configured to receive a video stream;
- a packet sorter configured to:
- bifurcate a frame of a first type into a first portion and a second portion;
- and
- group a plurality of frames of a second type with the second portion of the frame of the first type to create an unencrypted media chunk, wherein
- the first portion of the frame of the first type is not grouped with the plurality of frames of the second type and the second portion of the frame of the first type;
- an encryption engine configured to encrypt the first portion of the frame of the first type to create an encrypted media chunk;
- and
- a media output interface configured to output an output media stream comprised of the encrypted media chunk and the unencrypted media chunk.
A method for performing media encryption, the method comprising:
- receiving, by a media encryption system, a media stream comprising video packets;
- bifurcating, by the media encryption system, a frame of a first type into a first portion and a second portion;
- grouping, by the media encryption system, a plurality of frames of a second type with the second portion of the frame of the first type to create an unencrypted media chunk;
- encrypting, by the media encryption system, the first portion of the frame of the first type to create an encrypted media chunk;
- and
- outputting, by the media encryption system, an output media stream comprising the encrypted media chunk and the unencrypted media chunk.
Dependencies are inferred from the claim text.