Methods and apparatus of over-the-air programming of a...

Details Methods and apparatus of over-the-air programming of a... Methods and apparatus of over-the-air programming of a...

2006-12-14

2009-10-06

Tran, Tuan A (Department: 2618)

Telecommunications

Radiotelephone system

Security or fraud prevention

C455S410000, C455S418000, C455S419000, C455S420000, C713S168000, C380S247000, C380S249000

Reexamination Certificate

active

07599681

ABSTRACT:
Methods and apparatus for secure over-the-air (OTA) programming, and particularly, activation, of a wireless unit in a particular communications system. The unit stores a stored key having been generated by using a key algorithm (K-algorithm) with an identifier associated with the unit as an input to the K-algorithm. The unit may receive information such as parameters and a verification number from a communications system for the purpose of programming the unit. The verification number is generated by using an authorization algorithm (A-algorithm) having the parameters and a key as A-algorithm inputs. They key is generated by the K-algorithm having the identifier associated with the K-algorithm input. In response to the receipt of the parameters and the verification number, the wireless unit generates a trial verification number by using the A-algorithm with the parameters and the stored key as trial inputs. The unit compares the verification number to the trial verification number for a match. When finding the match, the unit uses the parameters for programming of the unit in the particular communications system. When failing to find the match, the unit fails to use the parameters for the programming.

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