V God proposed a plan to improve the privacy of Ethereum and use the Ethereum domain name system to achieve address hiding

On April 1, Ethereum founder Vitalik Buterin tweeted the next step in improving Ethereum privacy (besides ongoing Tornado improvements, cash, and the like): some simple, easy-to-use plans for privacy-like addresses.

That is, sending the tokens to an address with an ENS (Ethereum Domain Name System) name without announcing who specifically received the coins.

In response, Vitalik explained how his plan works, saying that implementing a private address is simple: the name holder of ENS publishes the public key P with the private key.

The token sender generates a random r and sends it to the address r*P (this is elliptic curve multiplication). The ENS name holder can spend these tokens with r*p. The sender just needs to send r to the name holder in some way.

In addition, Vitalik mentioned another method. He said that a public key P with an encrypted r is used and published on the chain. However, this requires the recipient to scan all private send transactions, so it is very expensive to run in the long run. It can be divided into T segments for storage, which reduces the scanning time by T times, but also reduces the anonymity by T times, so a trade-off is needed.