Wraps an Ethereum node RPC endpoint with account managment.
This allows, for example, to run a local node RPC endpoint that proxies all
requests to say, Infura, while internally handing account-specific requests like
eth_sendTransaction.
The service provides some very basic validation on the signed data:
- The chain ID specified in the transaction and typed data must match the node's chain ID
- The nonce specified in the transaction is only the next nonce. This means you can only sign one transaction at a time, but is important for foward secrecy.
Additionally, the service has a concept of a "validator" - a Lua module that gets called on every signature operation to validate whether or not the signature should be allowed. It can perform arbitrary logic. For an example, take a look at the CowSwap sample validator.
- CI
- Increase test coverage - its pretty poor ATM
- Optionally record signatures to a database instead of just logging them
- General project cleanup - it was done quite quickly