SELECTIVE AND PERSISTENT APPLICATION LEVEL ENCRYTION FOR VIDEO PROVIDED TO A CLIENT
First Claim
1. A server device for managing content encryption, comprising:
- a transceiver for receiving and sending information between another computing device;
a processor in communication with the transceiver; and
a memory in communication with the processor and for use in storing data and machine instructions that causes the processor to perform a plurality of operations, including;
receiving an unencrypted content stream;
selectively encrypting at least a portion of the unencrypted content stream, while leaving at least another portion of the unencrypted content stream unencrypted based on a selection rule that leaves at least trick play data in the content stream unencrypted; and
inserting an Entitlement Control Message (ECM) within the selectively encrypted content stream.
3 Assignments
0 Petitions
Accused Products
Abstract
A system, apparatus, and method are directed towards allowing ingestion of encrypted content into such as a VOD server, or PVR, or the like by selectively encrypting portions of a content stream based on various selection rules. In one embodiment, the selection rules include leaving selected portions of the content stream unencrypted, including packets that include a PES header; or video packets that include various trick play data such as picture start, GOP start, sequence start, sequence end data; PIDs associated with a PAT, PMT, or the like; while other portions of the content stream may be encrypted, including video and/or audio PIDs, or other video and/or audio portions. In still another embodiment, Entitlement Control Messages (ECMs) may be inserted that employ an encryption/decryption key rotation scheme, such as odd and/or even scrambling control bit structures, which may also be rotated based on a variety of conditions.
167 Citations
20 Claims
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1. A server device for managing content encryption, comprising:
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a transceiver for receiving and sending information between another computing device;
a processor in communication with the transceiver; and
a memory in communication with the processor and for use in storing data and machine instructions that causes the processor to perform a plurality of operations, including;
receiving an unencrypted content stream;
selectively encrypting at least a portion of the unencrypted content stream, while leaving at least another portion of the unencrypted content stream unencrypted based on a selection rule that leaves at least trick play data in the content stream unencrypted; and
inserting an Entitlement Control Message (ECM) within the selectively encrypted content stream. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for managing content encryption over a network, comprising:
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a content server that is configured to provide unencrypted content over the network;
an encryption server that is configured to receive unencrypted content from the content server, and to perform actions, including;
selectively encrypting at least a portion of the unencrypted content, wherein at least another portion of the unencrypted content associated with at least a portion of trick play data remains unencrypted; and
inserting an Entitlement Control Message (ECM) within the selectively encrypted content stream, wherein the ECM includes at least one encryption key associated with the selectively encrypted portion of the content. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of protecting a media content stream over a network, comprising:
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receiving unencrypted media content stream;
selectively encrypting at least a portion of the unencrypted media content stream, while leaving unencrypted a portion of the media content stream associated with media trick play data in the media content stream; and
sending the selectively encrypted media content stream over the network to at least one client device. - View Dependent Claims (15, 16, 17)
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18. A computer-readable storage medium having computer-executable instructions stored thereon for managing content securely, the computer-executable instructions when installed onto a computing device enable the computing device to perform actions, comprising:
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receiving unencrypted content stream;
selectively encrypting at least a portion of the unencrypted content stream, while leaving unencrypted a portion of the content stream associated with media trick play data in the media content stream; and
storing the selectively encrypted content stream. - View Dependent Claims (19, 20)
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Specification