发明名称 |
METHOD AND SYSTEM FOR GENERATING A SEQUENCE NUMBER TO BE USED FOR AUTHENTICATION |
摘要 |
The invention relates to a method and system for performing an authenticatio n, preferably between an user equipment and a network entity of a communication network wherein sequence numbers are used for generating an authentication information which may be transmitted to the user equipment for authenticatio n purpose. The sequence numbers are generated on the basis of a general information changing in a defined manner such as a global clock, and a value stored in a database. For reducing the number of database writing operations , the value is used several times for generating several different sequence numbers. The user-specific value may be calculated based on the difference between a previously used or predetermined sequence number and the general information, and is changed only in a re-synchronisation procedure. Such a r e- synchronisation procedure may be performed when the difference between the user-specific value and the general information exceeds a certain limit, or when the previously used or predetermined sequence number is larger than the general information.
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申请公布号 |
CA2402934(A1) |
申请公布日期 |
2001.10.18 |
申请号 |
CA20002402934 |
申请日期 |
2000.04.06 |
申请人 |
NOKIA CORPORATION |
发明人 |
NIEMI, VALTTERI;KOVANEN, TERO;LAKSHMESHWAR, SHREEKANTH |
分类号 |
G06F21/20;H04L29/06;H04W12/06;(IPC1-7):H04L9/12;H04Q7/38 |
主分类号 |
G06F21/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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