103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
// Copyright 2021 Evmos Foundation
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// This file is part of Evmos' Ethermint library.
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//
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// The Ethermint library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The Ethermint library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
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package client
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import (
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"bufio"
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"fmt"
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"strings"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/cosmos/cosmos-sdk/client/input"
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"github.com/cosmos/cosmos-sdk/crypto"
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"github.com/ethereum/go-ethereum/common/hexutil"
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ethcrypto "github.com/ethereum/go-ethereum/crypto"
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"github.com/spf13/cobra"
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"github.com/cerc-io/laconicd/crypto/ethsecp256k1"
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"github.com/cerc-io/laconicd/crypto/hd"
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"github.com/cosmos/cosmos-sdk/crypto/keyring"
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)
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// UnsafeExportEthKeyCommand exports a key with the given name as a private key in hex format.
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func UnsafeExportEthKeyCommand() *cobra.Command {
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return &cobra.Command{
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Use: "unsafe-export-eth-key [name]",
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Short: "**UNSAFE** Export an Ethereum private key",
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Long: `**UNSAFE** Export an Ethereum private key unencrypted to use in dev tooling`,
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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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clientCtx := client.GetClientContextFromCmd(cmd).WithKeyringOptions(hd.EthSecp256k1Option())
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clientCtx, err := client.ReadPersistentCommandFlags(clientCtx, cmd.Flags())
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if err != nil {
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return err
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}
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decryptPassword := ""
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conf := true
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inBuf := bufio.NewReader(cmd.InOrStdin())
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switch clientCtx.Keyring.Backend() {
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case keyring.BackendFile:
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decryptPassword, err = input.GetPassword(
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"**WARNING this is an unsafe way to export your unencrypted private key**\nEnter key password:",
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inBuf)
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case keyring.BackendOS:
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conf, err = input.GetConfirmation(
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"**WARNING** this is an unsafe way to export your unencrypted private key, are you sure?",
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inBuf, cmd.ErrOrStderr())
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}
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if err != nil || !conf {
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return err
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}
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// Exports private key from keybase using password
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armor, err := clientCtx.Keyring.ExportPrivKeyArmor(args[0], decryptPassword)
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if err != nil {
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return err
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}
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privKey, algo, err := crypto.UnarmorDecryptPrivKey(armor, decryptPassword)
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if err != nil {
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return err
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}
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if algo != ethsecp256k1.KeyType {
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return fmt.Errorf("invalid key algorithm, got %s, expected %s", algo, ethsecp256k1.KeyType)
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}
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// Converts key to Ethermint secp256k1 implementation
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ethPrivKey, ok := privKey.(*ethsecp256k1.PrivKey)
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if !ok {
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return fmt.Errorf("invalid private key type %T, expected %T", privKey, ðsecp256k1.PrivKey{})
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}
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key, err := ethPrivKey.ToECDSA()
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if err != nil {
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return err
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}
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// Formats key for output
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privB := ethcrypto.FromECDSA(key)
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keyS := strings.ToUpper(hexutil.Encode(privB)[2:])
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fmt.Println(keyS)
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return nil
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},
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}
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}
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