US Patent 12135814 Storage network with key sharing

A method includes encoding a data segment into a set of encoded data slices using erasure coding; storing, in storage units of a storage network, the set of encoded data slices, in accordance with a shared key-based encryption system (SKBES) having keys shared with the storage units; retrieving, at a periodic rate and in accordance with the SKBES, the set of encoded data slices from the storage units of the storage unit to verify whether individual slices of the set of encoded data slices have been corrupted. When one of the set of encoded data slices stored in one of the storage units has been corrupted, rebuilding the one of the set of encoded data slices by: retrieving the decode threshold number of other slices of the set of encoded data slices, in accordance with the SKBES; reconstructing the one of the set of encoded data slices based on the erasure encoding, to generate a reconstructed data slice; and storing, in accordance with the SKBES, the reconstructed data slice in the one of the storage units.