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METHOD AND APPARATUS FOR SECURELY TRANSMITTING DISTRIBUTED CHALLENGE VALUES (RAND) FOR USE IN MOBILE STATION AUTHENTICATION
METHOD AND APPARATUS FOR SECURELY TRANSMITTING DISTRIBUTED CHALLENGE VALUES (RAND) FOR USE IN MOBILE STATION AUTHENTICATION
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机译:安全地传输用于移动站认证的分布式挑战值(rand)的方法和装置
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摘要
The method and apparatus updates a binary number that will be used in cellular telephone system authentication procedures by applying a first algorithm to a plurality of most significant bits of a first binary number to obtain a second binary number; operates on a plurality of least significant bits of the first binary number with a second algorithm to obtain a third binary number, and applies a block cipher to the concatenation of the second and third numbers to obtain the updated binary number. When the most significant bits of the updated binary number comprise an all-zeroes number they are replaced with the most significant bits of the concatenation of the second and third numbers.
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