Re-authentication procedure for over-the-air activation
First Claim
Patent Images
1. A method of operating a wireless telecommunications system comprising:
- (a) receiving an originate activation message transmitted from a mobile station;
(b) generating a random number RAND string in response to said originate activation message, such that any given originate activation message leads to the generation of one and only one random number RAND string;
(c) transmitting a re-authentication message to said mobile station wherein said re-authentication message comprises said random number RAND string;
(d) generating an expected response based on said random number RAND string;
(e) receiving an actual response from said mobile station, which said actual response is generated by said mobile station based on said re-authentication message; and
(f) comparing said actual response to said expected response.
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Abstract
A method and system for providing OTA during the service origination call, wherein the mobile station performs an authentication procedure in response to a re-authentication message received, using shared secret data known to the mobile station and the system infrastructure and data in the re-authentication message to compute an authentication response. The response is transmitted to the base station, which compares it with an internally generated authentication response, and, if they match, privacy activation procedures, such as message encryption or voice masks, are initiated.
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Citations
34 Claims
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1. A method of operating a wireless telecommunications system comprising:
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(a) receiving an originate activation message transmitted from a mobile station; (b) generating a random number RAND string in response to said originate activation message, such that any given originate activation message leads to the generation of one and only one random number RAND string; (c) transmitting a re-authentication message to said mobile station wherein said re-authentication message comprises said random number RAND string; (d) generating an expected response based on said random number RAND string; (e) receiving an actual response from said mobile station, which said actual response is generated by said mobile station based on said re-authentication message; and (f) comparing said actual response to said expected response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operating a mobile station comprising:
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(a) transmitting an originate activation message to a wireless telecommunications system; (b) receiving a re-authentication message from said wireless telecommunications system that comprises a random number RAND string that was generated in said wireless telecommunications system in response to the receipt by said wireless telecommunications system of said originate activation message; (c) generating an actual response to said re-authentication message based on said random number RAND string; and (d) transmitting said actual response to said wireless telecommunications system. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A wireless telecommunications system comprising:
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(a) a receiver configured to receive an originate activation message transmitted by a mobile station and an actual response transmitted by said mobile station; (b) means for generating a random number RAND string in response to the receipt of said originate activation message, such that any given originate activation message leads to the generation of one and only one random number RAND string; (c) processing means configured to generate a re-authentication message that comprises said random number RAND string; (d) transmitting means configured to transmit said re-authentication message to said mobile station; (e) computing means to generate an expected response to said re-authentication message using said random number RAND string; and (f) means for comparing said actual response to said expected response. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A mobile station comprising:
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(a) a transmitter configured to transmit an originate activation message and an actual response to a wireless telecommunications system; (b) a receiver configured to receive a re-authentication message comprising a random number RAND string generated in response to the originate activation message; and (c) computing means for generating said actual response to said re-authentication message based on said random number RAND string. - View Dependent Claims (34)
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Specification