> On Mon, Jul 06, 2020 at 11:15:01PM +0000, таракан wrote: >> I develop an embedded system for a secure communication station. >> I want everything to stays transient, to be erased as soon and as fast as >> possible.
The authorities are more interested in the metadata, who is communicating with whom. To reduce the value of this information, needs to be embedded in a flood of unimportant chats. On 2020-07-07 11:55, Zenaan Harkness wrote: > This distributed/decentral content is interesting - I've been thinking of > "cache" as the local node's "contribution" to the distributed P2P content > store. The strong cure for revealing metadata is to embed private communications in a pool of everyone to everyone public communications. Suppose everyone interested in signing or encrypting their tests in this pool as a Zooko identity. Encrypted messages are dumped into the pool with everything else, and downloaded by everyone, but if he does not have a key that can decrypt an encrypted message, his client does not show him that message. Let S be curve25519 public key of the sender, R the public key of the recipient, r and s the corresponding private keys. The message starts with S. It is encrypted using the symmetric key s*R. The recipient client software tries the symmetric key r*S, which, if the message is for him rather than someone else, is going to equal s*R. If it does not work, obviously for someone else.
