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It uses a custom algorithm and data format but uses a similar deduplication technique to restic. There is bit of info in the docs page about this [1]. [1]: htt
by bimbashrestha 6y ago
It uses a custom algorithm and data format but uses a similar deduplication technique to restic. There is bit of info in the docs page about this [1].
[1]: https://blobbackup.com/docs.php#data-format https://blobbackup.com/docs.php#data-format
- arkadiyt 6y ago> Blob file names are the SHA256 hash of the unencrypted blob contents Obviously this is needed to make block level deduplication possible, but it also means that for this "end to end encrypted" product someone can still tell whether or not you own a given file. This is probably fine for most people but worth calling out.
- bimbashrestha 6y agoGood catch. But the SHA hash is salted per backup destination though. So you can't figure out the content from the hash alone. EDIT: I should make note of that on the docs page really. It currently gives the impression that I'm just straight up calculating the sha of the content.