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I presume they save a lot of money on space/upload speed if they can verify the hash of your data matches data already in their store. I'd be really curious to

I presume they save a lot of money on space/upload speed if they can verify the hash of your data matches data already in their store. I'd be really curious to learn what percentage of data overlaps between accounts.

r3bl 10y ago
Yes. For a while, I've actually tried uploading stuff to small TrueCrypt containers. Everything above 50 MB per container is absolutely unusable for cloud storage. Now I'm simply on ownCloud (well, Nextcloud to be precise) with the encryption enabled on the backend when the data is at rest.
milansuk 10y ago
They can use something like self-encryption[0] from MaidSafe, which shows them duplication so They can save space. They would still see that multiple users keep same file, but it's way better then current state. Only problem what I see is illegal content, because If uploader changes just only one bit in file, they will not be able to detect it. [0] https://github.com/maidsafe/self_encryption https://github.com/maidsafe/self_encryption