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METHOD AND DEVICE FOR SAFE TRANSMISSION OF DISTRIBUTED AUTHENTICATION QUESTIONS (EDGE) FOR USE IN THE AUTHENTICATION OF A MOBILE STATION
METHOD AND DEVICE FOR SAFE TRANSMISSION OF DISTRIBUTED AUTHENTICATION QUESTIONS (EDGE) FOR USE IN THE AUTHENTICATION OF A MOBILE STATION
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机译:用于在移动站的认证中使用的分布式认证问题(边缘)的安全传输的方法和设备
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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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