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I'm developing a solution to this problem. Longer version: Since I last posted about this on HN (check my comment history), I put the project on ice, and then

• notyourwork 10y ago
  Its nice that you are promoting your project but instead of a clickbait title to encourage traffic to your site it would be helpful to add a few details here as to what the project is.
  • kfreds 10y ago
    Fair enough :) The product looks and feels like a memory card, and identifies as such to a laptop, camera, dictaphone, or other device. The biggest functional difference is that all files written to the card are automatically encrypted on-the-fly. Files written during the same session can be read back by the host device (decrypted on-the-fly). As soon as the card is removed from the host, or the power is turned off, all files are hidden and unreadable until decrypted by a private key, which is intended to be stored elsewhere, for instance the user's laptop. The crypto primitives used are Curve25519 and ChaCha20.