Method and system for consumer electronic device certificate management
First Claim
1. A system for providing security between a source device and a sink device comprising:
- a first device including a list of certificates, each certificate of the list including a signature configured for identifying manufacturers of second devices;
a second device configured for connecting to the first device, the second device including a list of certificates each certificate including a signature for identifying manufacturers of the first devices;
wherein the signatures each include a public key designated for each manufacturer; and
at least one of the first device and the second device including means for adapting its respective certificate list to provide entry of a new signature configured for identifying a new manufacturer of one of the first device and the second device, wherein predetermined codes or keys are used by a new manufacturer to pre-verify a new device or chance an existing public key of a manufacturer.
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Accused Products
Abstract
A system for providing security, such as copy protection, between a source device and a sink device, in accordance with the present invention, includes a first device including a list of certificates, each certificate of the list including a signature for identifying manufacturers of second devices. A second device is included for connecting to the first device, the second device including a list of certificates each certificate including a signature for identifying manufacturers of the first devices. At least one of the first device and the second device includes an adaptor for adapting a respective certificate list to provide entry of a new signature for identifying a new manufacturer of one of the first devices and the second devices.
64 Citations
19 Claims
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1. A system for providing security between a source device and a sink device comprising:
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a first device including a list of certificates, each certificate of the list including a signature configured for identifying manufacturers of second devices;
a second device configured for connecting to the first device, the second device including a list of certificates each certificate including a signature for identifying manufacturers of the first devices;
wherein the signatures each include a public key designated for each manufacturer; and
at least one of the first device and the second device including means for adapting its respective certificate list to provide entry of a new signature configured for identifying a new manufacturer of one of the first device and the second device, wherein predetermined codes or keys are used by a new manufacturer to pre-verify a new device or chance an existing public key of a manufacturer. - View Dependent Claims (2, 3, 4, 5)
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6. A system for providing copy protection between a source device and a sink device comprising:
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a source device including a list of certificates, each certificate of the list configured for providing a signature for a manufacturer of sink devices, the signature configured for verifying sink devices;
a sink device configured for connecting to the source device, the sink device including a list of certificates corresponding to source device manufacturers, the sink device having a certificate omitted from the list of certificates of the source device;
wherein the signatures each include a public key designated for each manufacturer and means for adapting the source device to receive a new certificate from the sink device wherein the new certificate is transmitted to the source device to be added to the list of certificates thereby identifying the sink device to the source device, wherein predetermined codes or keys are used by a new manufacturer to pre-verify a new device or change an existing public key of a manufacturer. - View Dependent Claims (7, 8, 9, 10)
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11. A system for providing copy protection between a source device and a sink device comprising:
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a sink device including a list of certificates, each certificate of the list configured for providing a signature for a manufacturer of source devices, the signature configured for verifying source devices;
a source device configured for connecting to the sink device, the source device including a list of certificates corresponding to sink device manufacturers, the source device having a certificate omitted from the list of certificates of the sink device;
wherein the signatures each include a public key designated for each manufacturer; and
means for adapting the sink device to receive a new certificate from the source device wherein the new certificate is transmitted to the sink device to be added to the list of certificates thereby identifying the source device to the sink device, wherein predetermined codes or keys are used by a new manufacturer to pre-verify a new device or change an existing public key of a manufacturer. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for copy protecting content transferred between a source device and a sink device comprising the steps of:
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transmitting identifying information between the source device and the sink device, wherein the identifying information and the new identifying information includes public keys corresponding to manufacturers of the source devices and the sink devices;
verifying the source device and the sink device by determining if the source device and the sink device include the identifying information transmitted from the other of the source device and the sink device;
if the step of verifying fails, checking new identifying information against certification information in which the certification information is provided for one of a new source device and a new sink device including new identifying information; and
transmitting and storing the new identifying information between the source device and the sink device using predetermined codes or keys are used by a new manufacturer to pre-verify a new device or change an existing public key of a manufacturer to provide a new certificate for enabling data exchanges between the source device and the sink device. - View Dependent Claims (18, 19)
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Specification