eth_sendTransactionToNonNeighbors

[aakilfernandes]

Abstract

This proposal helps prevent correlating transactions to individual ip addresses. It does this by giving clients the ability to broadcast transactions only to their non-neighbor peers.

Motivation

A user may wish to broadcast a transaction that cannot be linked to their ip address. However, an attacker can sybil attack a node by generating a node id close to the target. Once an attacker has a similar node id, it becomes a "neighbor node". As a neighbor node, it is easier to perform traffic analysis to determine which transactions originated from the target node.

Design

Adds two rpc methods eth_sendTransactionToNonNeighbors and eth_sendRawTransactionToNonNeighbors. These methods mirror eth_sendTransaction and eth_sendRawTransaction, however they only broadcast to non-neighboring nodes only.

[aakilfernandes]

Perhaps strangers is a better word for nonNeighbor

[github-actions]

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[github-actions]

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