[특허]Rolling key resynchronization in cellular verification and validation system

Rolling key resynchronization in cellular verification and validation system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04L-009/08 H04L-009/32
출원번호	US-0704133 (1991-05-22)
발명자 / 주소	Raith Krister A. (Durham NC)
출원인 / 주소	Ericsson GE Mobile Communications, Inc. (Research Triangle Park NC 02)
인용정보	피인용 횟수 : 142 인용 특허 : 0

초록 ▼

A system for the resynchronization of a rolling key used as an input among a plurality of inputs to an authentication algorithm executed in a mobile station and in a radio network providing service to the mobile station. In one aspect of the system, the network rolling key input is set to a selected value and the mobile station is commanded to set the mobile station rolling key input to the same selected value. The mobile station will then set the mobile station rolling key input to the selected value in response to the command from the network.

대표청구항 ▼

In a system for the verification and validation of a mobile station and a radio network in accordance with an authentication algorithm executed on an authentication processor in each of said mobile station and said network, said mobile station authentication processor receiving a plurality of input values including a changeable key input value stored in a first location in memory and a fixed key input value, said mobile station authentication processor generating a plurality of output values including a ciphering key output value stored in a second location in memory and used to encipher a call, a changeable key output value and a network response output value, a system for linking the resetting of said changeable key input value in said mobile station to the validation of said network comprising: means for transmitting from said network to said mobile station a signal indicative of a changeable key reset; means for saving the changeable key input value stored in said first location to a third location in memory in response to the receipt of said changeable key reset signal; means for saving the ciphering key output value stored in said second location to a fourth location in memory in response to the receipt of said changeable key reset signal; means for setting the changeable key input value stored in said first location to a selected value; means for executing said authentication algorithm on said mobile station authentication processor a first time; means for setting the changeable key input value stored in said first location to the changeable key output value generated by said first execution of said authentication algorithm on said mobile station authentication processor; means for setting the ciphering key output value stored in said second location to the ciphering key output value generated by said first execution of said authentication algorithm on said mobile station authentication processor; means for transmitting from said network to said mobile station the network response output value generated in said network; means for executing said authentication algorithm on said mobile station authentication processor a second time in response to the receipt of the network response output value generated in said network; means for comparing the network response output value generated by said second execution of said authentication algorithm on said mobile station authentication processor with the network response output value generated in said network; means for determining whether said network has transmitted to said mobile station a signal indicative of a changeable key update; means for setting the changeable key input value stored in said first location to the changeable key output value generated by said second execution of said authentication algorithm on said mobile station authentication processor in response to an indication that the network response output value generated by said second execution of said authentication algorithm on said mobile station authentication processor matches the network response output value generated in said network and an indication that said mobile station has received said changeable key update signal from said network; means for setting the changeable key input value stored in said first location to the changeable key input value stored in said third location in response to an indication that the network response output value generated by said second execution of said authentication algorithm on said mobile station authentication processor does not match the network response output value generated in said network or an indication that said mobile station has not received said changeable key update signal from said network; and means for setting the ciphering key output value stored in said second location to the ciphering key output value stored in said fourth location in response to said indication that the network response output value generated by said second execution of said authentication algorithm on said mobile station authentication processor does not match the network response output value generated in said network or said indication that said mobile station has not received said changeable key update signal from said network.

이 특허를 인용한 특허 (142)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Rolling key resynchronization in cellular verification and validation system 원문보기

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Rolling key resynchronization in cellular verification and validation system 원문보기

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