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Shamir门限体制可以用来解决多个人共享一个密钥的问题。但是,如果有多个密钥需要让一组成员的部分或者全部成员共享,如果还用Shamir门限体制来解决,就会导致每一个共享方案都需要一个门限体制,也就是说每个成员必须保存一个或多个身份密钥,这显然是不方便也是不安全的。我们利用基于角色的访问控制(RBAC)的思想,提出了一种新的多密门限体制方案,其显著的优点就是在保证安全性的前提下,每一个参与者须且仅需拥有一个身份密钥。因此,该方案不仅具有RBAC的所有优点,而且对于共享者来说也非常方便。
Shamir threshold system can be used to solve the problem of multiple people sharing a key. However, if there are multiple keys that need to be shared by some or all members of a group, using the Shamir Threshold mechanism will result in a threshold scheme for each sharing scheme, meaning that each member must save This is obviously inconvenient and unsafe for one or more identity keys. We use the idea of role-based access control (RBAC) to propose a new scheme of multi-secret threshold schemes. The significant advantage of this scheme is that every participant must have only one identity key. Therefore, the solution not only has all the advantages of RBAC, but also is very convenient for the sharers.