Smart Contracts

Jonathan to start the refactoring of the smart contract

• Style
  • Let’s use NatSpec comments
  • Solidity Style Guide
• Naming
  • snake_case vs. camelCase
  • Rename DKGManager —> DKG
• Layout

  • DKGFactory creates DKGManagers

    • DKGFactory creates an ID

      bytes32 dkgId = keccak256(abi.encode(block.chainid, blockhash(block.number - 1)));
      

  • OracleFactory creates BN128EncryptionOracles

    • And other types in the future
• Scope of current “sprint” of work
  • No Resharing

Various IDs in Medusa

• Suite ID ⇒ represents the cryptographic curve, the parameters of encryption + different encryption schemes (todo)

• “Request ID + Cipher ID” request id is just a nonce currently

• “Oracle ID” = oracle contract address (+ chain id + “chain name”)

• “Protocol ID” ⇒ unique amongst all the chains, all networks, for a given reencryption request.

  • protocol_id = H(dkgID, request_id, suite_id, oracle_id)
  • This is passed in gossip messages

• “DKG network ID”

  • bytes32 dkgId = keccak256(abi.encode(block.chainid, smart contract address);
  • bytes32 dkgId = keccak256(abi.encode(distributed public key));
  • PRE-DKG:
    • Smart Contract - not a real need
      • ID = H(smart contract address + chain id)
    • HTTP API -
      • ID = H(URL)
  • POST-DKG:
    • in oracle contract, “refer to this DKG ID” → contract/http api where dkg has ran

  Only keep “pre-dkg”

Demo plan

• Go with structural changes until 7th of October
• Then Jonathan works on
  • Demo website deployment (automatic updates from github master)
  • Deployment of the nodes via kubernetes
    • TODO: ask aws accounts
• Nicolas works on the saving/loading file
  • FOllowing is “static” and common for all nodes
    • only contains oracle address /maybe dkg/
  • Following is per node
    • give ethereum key via CLI
    • DKG share —> THIS IS TO SAVE/LOAD
• ETHEREUM_KEY=…. testnet node run —oracleAddress 0x… —share share.toml

Example run command with config

testnet node run —config config.toml