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The board is the little brother of the BeagleBoard X15: ARM + gigabit + usb3 + msata + minipcie. The software caches mobile cloud uploads/downloads and so much more.
What's your feedback on the current feature set of my sndrBlock project, and what would you like to see added in the future?
https://kck.st/2kdOQXS
There's been a lot of talk about Dropbox and Snapchat keeping your deleted files. How is your technology actually performing the "annihilation"?
To do this the wrapped keys and the locally stored nonce+counter are deleted and the cloud provider is commanded to delete the encrypted blobs.
The platform uses a graph to figure out what references that data (forwarded messages, "stashed" copies, etc.) and cleans those up as well, pushes out a message (GCM, APNS, and our MQTT) with deleted data references (encryptedUUIDs) for devices to clean up.
For offline mode, senders can specify the "not available offline" restriction which makes the clients call a HEAD/GET each time visiting that encryptedUUID, purge decryption keys after use, and clear decrypted data after viewing.
Note: our system is more focused on removing trust in the cloud, not trust in your recipients.