The idea of freeing our data from cloud services over which we have little control still has appeal, as I would like to be able to retrieve data in a useful form. I don't have a reliable enough method to do that myself, as anything I do would be subject to physical damage like fires, while cloud providers can afford geographic redundancy. However, I would feel nervous about storing someone else's encrypted data on my server without having some key recovery mechanism. I don't think a judge would take kindly to my not being able to decrypt data stored on my server without some way to show who's data it was, and that they are the one who need to provide the key on demand.
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