DETECTING INTENTIONAL CORRUPTION OF DATA IN A DISPERSED STORAGE NETWORK

摘要

A method begins by a dispersed storage (DS) processing module of a DS unit selecting a data slice for corruption analysis and requesting integrity information for the data slice from one or more other DS units of a dispersed storage network. When the one or more requested integrity information is received, the method continues with the DS processing module analyzing the one or more received integrity information and local integrity information of the data slice stored in the DS unit. When the analysis of the one or more received integrity information and the local integrity information of the data slice is unfavorable, the method continues with the DS processing module identifying the data slice as being corrupted.

主权项

1. A method for detecting intentional corruption of data in a dispersed storage network (DSN), the method comprises:
selecting, by a storage unit of the DSN, a selected encoded data slice of a set of encoded data slices for corruption analysis, wherein a data segment of data was dispersed error encoded to produce the set of encoded data slices, wherein an integrity values was created for each encoded data slice of at least some of the set of encoded data slices to produce a set of integrity values, wherein encoded data slices of the set of encoded data slices and the set of integrity values are stored in a set of storage units, and wherein the set of storage units includes the storage unit; requesting and received, by the storage unit, the set of integrity values from another storage unit of the set of storage units; comparing, by the storage unit, the received set of integrity values with the set of integrity values that stored by the storage unit; and when the comparison of the received set of integrity values with the set of integrity values that stored by the storage unit is unfavorable, identifying, by the storage unit, the selected encoded data slice as being corrupted.