Security method for broadcasting service in a mobile communication system
First Claim
1. A method for receiving an broadcasting service by an access terminal in a mobile communication system including an access node for providing a broadcasting service to the access terminal over a radio channel and a packet data service node for connecting the access node to a broadcasting server via a packet data network, the method comprising the steps of:
- receiving a mask parameter message from the access node, the mask parameter message including a mask value for reception of a desired broadcasting service;
receiving a broadcasting service packet from the access node over a radio broadcast channel, the broadcasting service packet including a masked seed and a broadcast security packet;
calculating a particular seed using the masked seed value and the mask value;
generating an encryption key using the calculated seed and a previously received broadcast access key; and
decrypting the broadcast security packet using the encryption key.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a method for receiving an encrypted broadcasting service by an access terminal in a mobile communication system including an access node for providing a broadcasting service to the access terminal over a radio channel and a packet data service node for connecting the access node to a broadcasting server via a packet data network. The method includes receiving a mask parameter message including a mask value for reception of a desired broadcasting service, from the access node; receiving a broadcasting service packet including a masked seed and a broadcast security packet, from the access node over a radio broadcast channel; calculating a particular seed using the masked seed value and the mask value, and generating an encryption key using the calculated seed and a previously received broadcast access key; and decrypting the broadcast security packet using the encryption key.
47 Citations
32 Claims
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1. A method for receiving an broadcasting service by an access terminal in a mobile communication system including an access node for providing a broadcasting service to the access terminal over a radio channel and a packet data service node for connecting the access node to a broadcasting server via a packet data network, the method comprising the steps of:
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receiving a mask parameter message from the access node, the mask parameter message including a mask value for reception of a desired broadcasting service;
receiving a broadcasting service packet from the access node over a radio broadcast channel, the broadcasting service packet including a masked seed and a broadcast security packet;
calculating a particular seed using the masked seed value and the mask value;
generating an encryption key using the calculated seed and a previously received broadcast access key; and
decrypting the broadcast security packet using the encryption key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for providing an broadcasting service by an access node in a mobile communication system including the access node for providing a broadcasting service to an access terminal over a radio channel and a packet data service node for connecting the access node to a broadcasting server via a packet data network, the method comprising the steps of:
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if a broadcasting service is requested by the access terminal, receiving a broadcast access key (BAK) for the requested broadcasting service from the broadcasting server, and transmitting the received broadcast access key to the access terminal;
transmitting a mask parameter message including a mask value for the requested broadcasting service to the access terminal;
generating a broadcast security packet by encrypting broadcast data requested by the access terminal using an encryption key generated with a seed for the broadcasting service and a timestamp value; and
masking the seed using the mask value, and transmitting a broadcasting service packet including the masked seed and the broadcast security packet to the access terminal over a radio broadcast channel. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification