System and method for secure and convenient management of digital electronic content
First Claim
Patent Images
1. A communication device operable in a domain-based digital rights management environment, comprising:
- a processing element;
a receiver, coupled to and controlled by the processing element, operable to receive incoming messages to the communication device;
a transmitter, coupled to and controlled by the processing element, operable to transmit output messages of the communication device; and
a digital rights management module coupled to the processing element that controls operation of the communication device within the domain-based digital rights management environment;
wherein the digital rights management module of the communication device in combination with a domain authority of the domain-based digital rights management environment is operable to selectively add the communication device to a domain having one or more communication devices that share a cryptographic key and thus permit the communication device to selectively receive and decrypt digital content based upon membership in the domain.
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Abstract
A domain-based digital rights management (DRM) method and system. A domain has one or more communication devices, such as user devices that share a common cryptographic key of the domain. There may be a plurality of domains in a digital rights management environment and the domains may additionally be overlapping. A domain authority, in combination with a digital rights management module of a communication device, operates to selectively register and unregister the communication device to the one or more domains and to control access to encrypted digital content information.
653 Citations
53 Claims
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1. A communication device operable in a domain-based digital rights management environment, comprising:
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a processing element;
a receiver, coupled to and controlled by the processing element, operable to receive incoming messages to the communication device;
a transmitter, coupled to and controlled by the processing element, operable to transmit output messages of the communication device; and
a digital rights management module coupled to the processing element that controls operation of the communication device within the domain-based digital rights management environment;
wherein the digital rights management module of the communication device in combination with a domain authority of the domain-based digital rights management environment is operable to selectively add the communication device to a domain having one or more communication devices that share a cryptographic key and thus permit the communication device to selectively receive and decrypt digital content based upon membership in the domain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of operation of a communication device of a domain having one or more communication devices that share a cryptographic key in a domain-based digital rights management environment, comprising:
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in response to a user request, the communication device communicating to a domain authority a request to register the communication device into a domain; and
if the communication device is determined to have access to one or more valid cryptographic elements, the communication device receiving over a communications channel a cryptographic key of the domain from the domain authority that links the communication device to the domain. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42)
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36. A method for registering devices in a domain having one or more communication devices that share a cryptographic key in a domain-based digital rights management environment, comprising:
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a domain authority receiving a request to add a communication device to the domain;
the domain authority determining whether the communication device is legitimate by verifying that the communication device has access to one or more valid cryptographic elements;
if the communication device is determined to be valid, the domain authority transmitting over a communications channel to the communication device a cryptographic key of the domain operable to link the communication device to the domain.
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43. A domain-based digital rights management system, comprising:
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a communication device linked via a first communications link to a domain-based digital rights management environment, comprising;
a processing element;
a receiver, coupled to and controlled by the processing element, operable to receive incoming messages to the communication device;
a transmitter, coupled to and controlled by the processing element, operable to transmit output messages of the communication device; and
a digital rights management module coupled to the processing element that controls operation of the communication device within the domain-based digital rights management system;
a domain authority coupled to the communication device via a second communications link;
wherein the digital rights management module of the communication device in combination with the domain authority are operable to selectively add the communication device to a domain having one or more communication devices that share a cryptographic key and thus permit the communication device to selectively receive and decrypt digital content based upon membership in the domain.
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44. A method of limiting access to digital content in a domain-based digital rights management environment, comprising:
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a first communication device, of a domain having one or more communication devices that share a cryptographic key of the domain, requesting digital content;
in response to the request from the first communication device, verifying authenticity of the domain; and
upon verifying authenticity of the domain, making the requested digital content accessible to the first communication device by binding an encrypted form of the requested digital content to the cryptographic key of the domain to which the first communication device is registered. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification