Encrypted Mempool Design

An encrypted mempool is a mechanism designed to prevent front-running and sandwich attacks in decentralized exchanges by hiding transaction details from public view until they are included in a block. In a standard mempool, transactions are broadcast in plaintext, allowing malicious actors to observe pending orders and execute their own transactions ahead of or around them to profit from slippage.

Encrypted mempool designs use cryptographic techniques such as threshold encryption or trusted execution environments to keep transaction data secret during the pending phase. Only after the transactions are ordered and committed to the blockchain is the data decrypted and revealed to the network.

This process ensures that the sequencing of transactions is determined by a fair protocol rather than by observers who can manipulate order flow. By obscuring the contents of pending transactions, the design mitigates information leakage that often leads to negative execution outcomes for retail traders.

It shifts the power dynamic from sophisticated arbitrageurs back to the original submitter of the transaction. This approach is fundamental to creating more efficient and equitable decentralized market structures.