How to Update Dependable Secure Computing Systems from a Survivability Assessment Perspective?

In this paper, we investigate how to compute an updating time for a dependable secure computing (DSC) system from a survivability assessment perspective. Generally speaking, to prevent adversaries from learning secret information in a DSC system, the secret information has to be updated in the system. The proposed method is based on a novel concept of survivability of reconfigurable systems presented earlier in [1]. It is shown that secret updating time increases with k, which is the number of secret shares for reconstructing the secret. The proposed method presents a solution for an important problem in the DSC system which is how to determine an appropriate updating time.