Abstract
For disaster recovery, we store backups of a file in several positions far away from each other. If we delegate this task to an untrusted cloud service provider, a verification method is desired. In this paper, we construct a generic transformation from "proof of retrievability" to "proof of multicopy". We present this work in two stages. In the first stage, we propose a generic protocol of "proof of file position" based on an arbitrary secure "proof of retrievability" protocol. In the second stage, we propose a "proof of multicopy" protocol based on our "proof of file position" protocol. Both of our protocols are provably secure.
| Original language | English |
|---|---|
| Pages (from-to) | 141-151 |
| Number of pages | 11 |
| Journal | Fundamenta Informaticae |
| Volume | 157 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 2018 |
Keywords
- proof of file position
- proof of multicopy
- proof of retrievability