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    • 2. 发明申请
    • METHOD AND APPARATUS FOR SECURE KEY MANAGEMENT USING MULTI-THRESHOLD SECRET SHARING
    • 使用多阈值秘密共享安全关键管理的方法和装置
    • WO2003065643A2
    • 2003-08-07
    • PCT/US2002/029754
    • 2002-09-19
    • AVAYA TECHNOLOGY CORP.NADOOSHAN, MehrdadREN, Jian
    • NADOOSHAN, MehrdadREN, Jian
    • H04L9/08
    • H04L9/085
    • A method and apparatus are disclosed for managing components of a secret key according to a secret sharing scheme. The disclosed secret sharing scheme divides a secret value, R , into n secret components ( R l , R 2 , ..., R n ) and one super component, S , in such a way that R can be computed from (i) any k or more R i components (k R i . The secret components ( R l, R 2 , ..., R n ) are distributed to a number of authorized users. A multiple threshold secret sharing scheme assigns various users in a group into one of a number of classes. Each user class has a corresponding threshold level that indicates the number of users that must come together with their assigned components to obtain access to the shared secret. The multiple threshold scheme divides the secret into n components each having an assigned threshold level (i.e., the number of such components that are required to obtain the secret). Any component having a lower threshold level can satisfy the role of a component having a higher threshold level. The multiple threshold scheme provides a hierarchical scheme that allows the secret, R , to be shared among different groups of people with different thresholds.
    • 公开了一种根据秘密共享方案来管理秘密密钥的组件的方法和装置。 所公开的秘密共享方案将秘密值R分成n个秘密组件(R1,R2,...,Rn)和一个超级组件S,使得R可以从(i)任何k或 更多的Ri分量(k