evmos-ledger-go

README

evmos-ledger-go

Helper library for implementing Ledger support in the Evmos CLI. This wraps Ethereum-Ledger-Go to provide a Ledger interface that is compatible (with minor additions) with the Cosmos SDK.

Overview

Evmos-Ledger-Go provides a Cosmos SDK Ledger object which can be instantiated, stored in the keyring, and used to sign CLI functions (such as sending tokens or staking) via Ledger.

Usage

1. Create a Cosmos SDK EncodingConfig with the requisite type registration (e.g. using an app's ModuleBasics)
2. Call EvmosLedgerDerivation using this config as a parameter to receive a LedgerDerivation function
3. Instantiate the Cosmos SDK Ledger instance with the provided LedgerDerivation function

Technical Notes

The Ledger will take a signature byte stream of either Amino (legacy) or Protobuf type payloads, decode the payload using the provided EncodingConfig, construct an EIP-712TypedData payload to be signed with the Ethereum Ledger app, and return the signature.