funga 0.5.7

A signer and keystore daemon and library for cryptocurrency software development

CRYPTO DEV SIGNER

This package is written because at the time no good solution seemed to exist for solving the following combined requirements and issues:

• A service has custody of its users' private keys.
• The are a large number of private keys involved (hundreds of thousands and up).
• Need to sign transactions conforming to EIP-155, with the ability to arbitrarily specify the "chain id".
• Do not want to store the keys inside an ethereum node, especially not the one connected to the network.
• Want to use the "standard" web3 JSON-RPC interface, so that the component can be easily replaced later.
• Multiple providers don't work on either web3.js and/or web3.py.
• As a bonus, provide a practical keystore solution for testing in general for web3 projects.

TECHNICAL OVERVIEW

keystore

• Keystore: Interface definition

transaction

• Transaction: Interface definition.

signer

• Signer: Interface definition. Its signTransaction method expects an object implementing the Transaction interface.