Method, apparatus and system for securely providing material to a licensee of the material
First Claim
1. A method for securely providing material to a licensee of the material, comprising:
- providing a plurality of license keys to a licensee of material;
providing said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding time periods of said material; and
providing said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, to said licensee in an Intellectual Property Management and Protection (IPMP) stream provided along with said material.
12 Assignments
0 Petitions
Accused Products
Abstract
A method, apparatus and system for securely providing material to a licensee of the material are described. In each, at least one license key is provided, preferably along with a license including usage rights for requested content or material to the licensee. The material requested and licensed by the licensee is provided to the licensee encrypted with at least one content key. To achieve a second-level of security, the at least one content key is provided to the licensee encrypted with the at least one license key so that both the at least one content key and the at least one license key are necessary for the licensee to decrypt and use the encrypted material.
-
Citations
31 Claims
-
1. A method for securely providing material to a licensee of the material, comprising:
-
providing a plurality of license keys to a licensee of material; providing said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding time periods of said material; and providing said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, to said licensee in an Intellectual Property Management and Protection (IPMP) stream provided along with said material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An apparatus for securely providing material to a licensee of the material, comprising at least one server configured with at least one computer program for:
-
transmitting a plurality of license keys to a client device operable by a licensee of material; transmitting said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding periods of time of said material; and transmitting said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, to said client device in an Intellectual Property Management and Protection (IPMP) stream provided along with said material. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A system for securely providing material to a licensee of the material, comprising:
-
a client device operable by a licensee of material; and at least one server configured to transmit a plurality of license keys, said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding time periods of said material, and said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, to said client device in an Intellectual Property Management and Protection (IPMP) stream provided along with said material. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A method for securely receiving material from a licensor of the material, comprising:
-
receiving a license to use material; receiving a plurality of license keys corresponding to said license; receiving said material in at least one MPEG-4 bit stream encrypted by a plurality of content keys for corresponding time periods of said material; receiving said plurality of content keys encrypted with said plurality of license keys, used one-at-a-time on a periodically rotating basis for encrypting and decrypting said plurality of content keys, in an Intellectual Property Management and Protection (IPMP) stream provided along with said material; decrypting said encrypted plurality of content keys using said plurality of license keys; and decrypting said encrypted material using said decrypted plurality of content keys for corresponding time periods of said material. - View Dependent Claims (29, 30, 31)
-
Specification