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options.go
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options.go
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// Copyright 2022 Evmos Foundation
// This file is part of the Evmos Network packages.
//
// Evmos is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Evmos packages are distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Evmos packages. If not, see https://github.com/evmos/evmos/blob/main/LICENSE
package keyring
import (
"github.com/cosmos/cosmos-sdk/crypto/keyring"
cosmosLedger "github.com/cosmos/cosmos-sdk/crypto/ledger"
"github.com/cosmos/cosmos-sdk/crypto/types"
"github.com/evmos/evmos-ledger-go/ledger"
"github.com/qom-one/qomapp/v1/crypto/ethsecp256k1"
"github.com/qom-one/qomapp/v1/crypto/hd"
)
// AppName defines the Ledger app used for signing. Evmos uses the Ethereum app
const AppName = "Ethereum"
var (
// SupportedAlgorithms defines the list of signing algorithms used on Evmos:
// - eth_secp256k1 (Ethereum)
SupportedAlgorithms = keyring.SigningAlgoList{hd.EthSecp256k1}
// SupportedAlgorithmsLedger defines the list of signing algorithms used on Evmos for the Ledger device:
// - secp256k1 (in order to comply with Cosmos SDK)
// The Ledger derivation function is responsible for all signing and address generation.
SupportedAlgorithmsLedger = keyring.SigningAlgoList{hd.EthSecp256k1}
// LedgerDerivation defines the Evmos Ledger Go derivation (Ethereum app with EIP-712 signing)
LedgerDerivation = ledger.EvmosLedgerDerivation()
// CreatePubkey uses the ethsecp256k1 pubkey with Ethereum address generation and keccak hashing
CreatePubkey = func(key []byte) types.PubKey { return ðsecp256k1.PubKey{Key: key} }
// SkipDERConversion represents whether the signed Ledger output should skip conversion from DER to BER.
// This is set to true for signing performed by the Ledger Ethereum app.
SkipDERConversion = true
)
// EthSecp256k1Option defines a function keys options for the ethereum Secp256k1 curve.
// It supports eth_secp256k1 keys for accounts.
func Option() keyring.Option {
return func(options *keyring.Options) {
options.SupportedAlgos = SupportedAlgorithms
options.SupportedAlgosLedger = SupportedAlgorithmsLedger
options.LedgerDerivation = func() (cosmosLedger.SECP256K1, error) { return LedgerDerivation() }
options.LedgerCreateKey = CreatePubkey
options.LedgerAppName = AppName
options.LedgerSigSkipDERConv = SkipDERConversion
}
}