While they provide a working example of how to encrypt files that does it properly, with a per-file key encrypted by a master key, it does leave you with the question why they don't do it if it's so simple. Their explanation, that it's done in order to be able to satisfy use cases like serving public files over the internet, is quite simply nonsense. Unlike most other services B2 doesn't provide any encryption of data at rest. Just like most cloud storage providers it gives you a flat name space that can be arbitrarily divided into folders, by default using the forward slash as delimiter. (4/5) Table of Contentsī2 provides versioned storage for files, large and small. Cheap but a bit slow, if S3 beats B2 on performance, B2 annihilates S3 on pricing.
If all you want to do is store data and only occasionally look at it, Backblaze's B2 is peerless. Features Multipart Uploads Yes Folders Yes Encryption No Multiple Datacenters No Durability 99.999999%.APIs HTTP Yes Java Yes S3-Compatible No.
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