Controlled Dissemination of Information in Mobile Networks
First Claim
1. ) A system for controlling dissemination of information to a device on a mobile network, the system comprising:
- an information generation unit for generating information to be disseminated over the mobile network, wherein the information generation unit divides the information into a plurality of categories corresponding to a plurality of granularities of information;
a key generator for generating an encryption key to be transmitted to the information generation unit, said encryption key being one in a set of encryption keys, each encryption key of the set being assigned to a particular hierarchical level corresponding to a particular granularity of information;
an encryption unit in communication with the information generating unit and the key generator for encrypting the particular granularity of information using the corresponding encryption key; and
a broadcasting unit in communication with the information generation unit for broadcasting the encrypted information to the device across the mobile network
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Abstract
The present invention discloses systems and methods for controlled dissemination of information in mobile networks using encrypted broadcasts that are decrypted at the device. An encryption key is generated corresponding to a particular category or granularity of information. The information is encrypted before it is broadcast to the sector. A user within the sector sends a key request across the network, in response to which the encryption key is sent to the user. The user can decrypt the encrypted information received in the broadcast. Additionally, a credit-checking mechanism may be employed to ensure that the user has sufficient credit to purchase the key. In one embodiment, the information to be disseminated is divided into a plurality of categories, wherein each category corresponds to a granularity of information. The encryption key is one in a set of encryption keys, each of said set of encryption keys being assigned to a particular hierarchical level corresponding to a particular granularity of information.
12 Citations
26 Claims
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1. ) A system for controlling dissemination of information to a device on a mobile network, the system comprising:
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an information generation unit for generating information to be disseminated over the mobile network, wherein the information generation unit divides the information into a plurality of categories corresponding to a plurality of granularities of information; a key generator for generating an encryption key to be transmitted to the information generation unit, said encryption key being one in a set of encryption keys, each encryption key of the set being assigned to a particular hierarchical level corresponding to a particular granularity of information; an encryption unit in communication with the information generating unit and the key generator for encrypting the particular granularity of information using the corresponding encryption key; and a broadcasting unit in communication with the information generation unit for broadcasting the encrypted information to the device across the mobile network - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. ) A method for controlling dissemination of information to a device on a mobile network, the method comprising:
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dividing the information into a plurality of categories, each of said plurality of categories corresponding to a granularity of information; generating a set of encryption keys, each of said encryption keys in the set being assigned to a particular hierarchical level among a plurality of hierarchical levels, said particular hierarchical level corresponding to a particular granularity of information; encrypting each category of information within a granularity of information with one of the set of encryption keys in the corresponding hierarchical level; and broadcasting the plurality of encrypted categories of information to the device on the mobile network. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. ) The method of clam 13, wherein the step of transmitting a key request further comprises:
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initiating, via an application installed on the device, a request for a particular category of information; and generating a request for an encryption key associated with the particular category of information.
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Specification