Method and apparatus for providing conditional access to recorded data within a broadband communication system
First Claim
1. A method (300) for providing conditional access to data (12/52) within a broadband communication system (10), the broadband communication system (10) having a conditional access system (24) responsive to a plurality of subscriber devices (14, 20), the data (52) stored on a recording medium (50) when the recording medium (50) is detachably coupled to a first subscriber device (14) and encrypted using an encryption key (54) associated with the first subscriber device, the method comprising:
- based on a request on behalf of a second subscriber device (20) for access to the data (52), arranging (302) for the conditional access system (24) to authenticate the second subscriber device (20); and
after authentication of the second subscriber device (20), arranging (304) for the conditional access system (24) to transfer the encryption key (54) to the second subscriber device (24), the encryption key (54) usable by the second subscriber device (20) to decrypt the data (52) when the recording medium (50) is detachably coupled to the second subscriber device (20), access to the decrypted data by the second subscriber device (20) restricted in a manner specified by the conditional access system (24).
1 Assignment
0 Petitions
Accused Products
Abstract
A method (300) for providing conditional access to data. A conditional access system (24) is responsive to subscriber devices (14, 20), and the data (52) is stored on a recording medium (50) and encrypted using an encryption key (54) when the recording medium (50) is detachably coupled to a first subscriber device (14). The method includes: based on a request on behalf of a second subscriber device for access to the data, arranging (302) for the conditional access system to authenticate the second subscriber device; and arranging (304) for the conditional access system to transfer the encryption key to the second subscriber device. The encryption key is usable by the second subscriber device to decrypt the data when the recording medium is detachably coupled thereto, and access to the decrypted data by the second subscriber device is restricted in a manner specified by the conditional access system.
66 Citations
23 Claims
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1. A method (300) for providing conditional access to data (12/52) within a broadband communication system (10), the broadband communication system (10) having a conditional access system (24) responsive to a plurality of subscriber devices (14, 20), the data (52) stored on a recording medium (50) when the recording medium (50) is detachably coupled to a first subscriber device (14) and encrypted using an encryption key (54) associated with the first subscriber device, the method comprising:
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based on a request on behalf of a second subscriber device (20) for access to the data (52), arranging (302) for the conditional access system (24) to authenticate the second subscriber device (20); and
after authentication of the second subscriber device (20), arranging (304) for the conditional access system (24) to transfer the encryption key (54) to the second subscriber device (24), the encryption key (54) usable by the second subscriber device (20) to decrypt the data (52) when the recording medium (50) is detachably coupled to the second subscriber device (20), access to the decrypted data by the second subscriber device (20) restricted in a manner specified by the conditional access system (24). - 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. An apparatus for providing conditional access to data (12/52) within a broadband communication system (10), the broadband communication system (10) having a conditional access system (24) responsive to a plurality of subscriber devices (14, 20), the data (52) stored on a recording medium (50) when the recording medium (50) is detachably coupled to a first subscriber device (14), and encrypted using an encryption key (54) associated with the first subscriber device (14), the apparatus comprising:
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a computer-readable storage medium (30, 264); and
a processor (32, 239) responsive to the computer-readable storage medium (30, 264) and to a computer program (34, 222), the computer program (34, 222), when loaded into the processor (32, 239), operative to;
based on a request on behalf of a second subscriber device (20) for access to the data (52), arrange for the conditional access system (24) to authenticate the second subscriber device (20); and
arrange for the conditional access system (24) to transfer the encryption key (54) to the second subscriber device (20) after authentication of the second subscriber device (20), the encryption key (54) usable by the second subscriber device (20) to decrypt the data when the recording medium (50) is detachably coupled to the second subscriber device (20).
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21. A system for providing conditional access to data (12/52) within a broadband communication network (10), the data (52) stored on a recording medium (50) detachably couplable to a plurality of subscriber devices (14, 20), and encrypted using an encryption key (54) associated with a first subscriber device (14), the system comprising:
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a network communications interface (42, 259) for forwarding a request for access to the data by a second subscriber device (20); and
an information processing system (44, 253) in communication with the network communications interface (42, 259), for receiving and processing the request forwarded by the network communications interface (42, 259), and, based on the request, performing a method comprising;
arranging for authentication of the second subscriber device (20) by a conditional access system (24) within the broadband communication network (10); and
after authentication of the second subscriber device (20), arranging for the conditional access system (24) to transfer the encryption key (54) to the second subscriber device (20), the encryption key (54) usable by the second subscriber device (20) to decrypt the data when the recording medium (50) is detachably coupled to the second subscriber device (20). - View Dependent Claims (22, 23)
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Specification