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METHOD AND DEVICE FOR THE SAFE TRANSMISSION OF DISTRIBUTED RANDOM VALUES USED IN CHALLENGES FOR USING IN AUTHENTICATION OF MOBILE STAKES
METHOD AND DEVICE FOR THE SAFE TRANSMISSION OF DISTRIBUTED RANDOM VALUES USED IN CHALLENGES FOR USING IN AUTHENTICATION OF MOBILE STAKES
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机译:用于挑战中的分布式随机值安全传输的方法和装置
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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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