For citation:
Kosolapov Y. V., Pevnev F. S. A Method of Protected Distribution of Data Among Unreliable and Untrusted Nodes. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2019, vol. 19, iss. 3, pp. 326-337. DOI: 10.18500/1816-9791-2019-19-3-326-337, EDN: NDAKQV
A Method of Protected Distribution of Data Among Unreliable and Untrusted Nodes
We consider a model of protecting the confidentiality and recoverability of data in a distributed storage system. It is assumed that in- formational blocks are coded into the code blocks. Then the blocks are divided into parts and distributed among repositories of the distributed storage. A modification of the code noising method is con- structed which simultaneously provides computational resistance to coalition attacks on confidentiality of stored data. Moreover, the modification also provides protection from the failure of a part of the storage nodes. Confidentiality protection is provided for coalitions of greater cardinality than in the case of using the classical method of code noising. It is shown that computational resistance is based on the complexity of solving one well-known problem of theoretical coding.
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