Sign transaction in relay itself

[Rizato]

Is your feature request related to a problem? Please describe. We don't want to store all the relay keymat inside the geth containers on infra.

Describe the solution you'd like Need to be able to decrypt the keyfile, and sign transactions Then we can use send_raw_transaction to post to geth.

Additional context Blocks Steve

Decrypting in web3.py (pbkdf2 to get key to decrypt eth key inside json blob) https://github.com/ethereum/eth-keyfile/blob/d8f9ed9e9c232bc69f5b1199f44b5b78c1fa6a34/eth_keyfile/keyfile.py#L151

Signing in web3.py () Still looking

Hack found on SO (Just use web3.py in rust) https://ethereum.stackexchange.com/questions/46490/how-to-sign-a-transaction-in-rust

[scsich]

I'm not sure that we need to do this today, but it breaks encapsulation between a community and environment wide homechain (e.g. rinkeby). Currently both community relay(s) and rinkeby_homechain a required to have relay key. We can support this for using the same relay keys across 2-3 communities per environment but it quickly becomes unwieldy.

The solution I'd like to see is something where the community service(s) hold on to their own keys. Or maybe this?

https://www.hashicorp.com/blog/using-vault-to-build-an-ethereum-wallet

[scsich]

Removing blocker tag for now.

[mjkoo]

Implementation of tx signing https://github.com/synlestidae/ethereum-tx-sign/blob/master/src/raw_transaction.rs we could either use this lib or grab that func (it's pretty short), MIT licensed

[ceseale]

closed with #44