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Dmitriy Ryajov 2021-05-10 10:43:26 -06:00 committed by markspanbroek
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# Robust Proofs of Data Possession and Retrievability
> Proofs of data possession (PoDP) schemes establish if an entity is currently or has been in possession of a data set. Proofs of Retrievability (PoR) schemes attempt to detect and prevent a provider from covertly restricting access to a dataset.
> Proofs of data possession (PoDP) schemes establish if an entity is currently or has been in possession of a data set. Proofs of Retrievability (PoR) schemes attempt to detect with negligible probability that an entity is maliciously or otherwise withholding data.
## Proofs of data possession