Hi,

My project is not strictly messaging-related, but I think this is still the 
most fitting forum.

For the past few months I have been working on the design and implementation 
for an object store that hides as much metadata as practical, while keeping it 
fast.

Zerostash stores all data in 4MiB blobs that look random from the outside. I 
use Argon2 and libsodium’s key derivation APIs to make all of this addressable 
through a user password, and lz4 inside ChaCha-Poly for encrypting the blobs.

The code is very PoC quality, but I’ve focused on giving a performant 
implementation over cleanliness for now. On a MacBook Pro, I can achieve write 
speeds of ~300MiB/s, and unpack at around 400MiB/s for a large number of small 
files. At the moment single file is bound to a single thread, so you will not 
be blown away by performance on large files.

I’ve uploaded the specification and code to https://github.com/rsdy/zerostash, 
and would be grateful for some feedback.

Cheers,
Peter
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