hdwallet

package module
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 Go to latest Published: Aug 8, 2018 License: MIT Imports: 15 Imported by: 1

README

go-ethereum-hdwallet

Ethereum HD Wallet derivations from [mnemonic] seed in Go (golang). Implements the go-ethereum accounts.Wallet interface.

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Install

go get -u github.com/miguelmota/go-ethereum-hdwallet

Documenation

https://godoc.org/github.com/miguelmota/go-ethereum-hdwallet

Getting Started

package main

import (
	"fmt"
	"log"

	"github.com/miguelmota/go-ethereum-hdwallet"
)

func main() {
	mnemonic := "tag volcano eight thank tide danger coast health above argue embrace heavy"
	wallet, err := hdwallet.NewFromMnemonic(mnemonic)
	if err != nil {
		log.Fatal(err)
	}

	path := hdwallet.MustParseDerivationPath("m/44'/60'/0'/0/0")
	account, err := wallet.Derive(path, false)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(account.Address.Hex()) // 0xC49926C4124cEe1cbA0Ea94Ea31a6c12318df947

	path = hdwallet.MustParseDerivationPath("m/44'/60'/0'/0/1")
	account, err = wallet.Derive(path, false)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(account.Address.Hex()) // 0x8230645aC28A4EdD1b0B53E7Cd8019744E9dD559
}
Signing transaction
package main

import (
	"log"
	"math/big"

	"github.com/davecgh/go-spew/spew"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/miguelmota/go-ethereum-hdwallet"
)

func main() {
	mnemonic := "tag volcano eight thank tide danger coast health above argue embrace heavy"
	wallet, err := hdwallet.NewFromMnemonic(mnemonic)
	if err != nil {
		log.Fatal(err)
	}

	path := hdwallet.MustParseDerivationPath("m/44'/60'/0'/0/0")
	account, err := wallet.Derive(path, true)
	if err != nil {
		log.Fatal(err)
	}

	nonce := uint64(0)
	value := big.NewInt(1000000000000000000)
	toAddress := common.HexToAddress("0x0")
	gasLimit := uint64(21000)
	gasPrice := big.NewInt(21000000000)
	var data []byte

	tx := types.NewTransaction(nonce, toAddress, value, gasLimit, gasPrice, data)
	signedTx, err := wallet.SignTx(account, tx, nil)
	if err != nil {
		log.Fatal(err)
	}

	spew.Dump(signedTx)
}

Test

make test

License

MIT

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var DefaultBaseDerivationPath = accounts.DefaultBaseDerivationPath

DefaultBaseDerivationPath is the base path from which custom derivation endpoints are incremented. As such, the first account will be at m/44'/60'/0'/0, the second at m/44'/60'/0'/1, etc

View Source 
var DefaultRootDerivationPath = accounts.DefaultRootDerivationPath

DefaultRootDerivationPath is the root path to which custom derivation endpoints are appended. As such, the first account will be at m/44'/60'/0'/0, the second at m/44'/60'/0'/1, etc.

Functions

func MustParseDerivationPath 

func MustParseDerivationPath(path string) accounts.DerivationPath

MustParseDerivationPath parses the derivation path in string format into []uint32 but will panic if it can't parse it.

func NewMnemonic 

func NewMnemonic(bits int) (string, error)

NewMnemonic returns a randomly generated BIP-39 mnemonic using 128-256 bits of entropy.

func NewSeed 

func NewSeed() ([]byte, error)

NewSeed returns a randomly generated BIP-39 seed.

func NewSeedFromMnemonic 

func NewSeedFromMnemonic(mnemonic string) ([]byte, error)

NewSeedFromMnemonic returns a BIP-39 seed based on a BIP-39 mnemonic.

func ParseDerivationPath 

func ParseDerivationPath(path string) (accounts.DerivationPath, error)

ParseDerivationPath parses the derivation path in string format into []uint32

Types

type Wallet 

type Wallet struct {
	// contains filtered or unexported fields
}

Wallet is the underlying wallet struct.

func NewFromMnemonic 

func NewFromMnemonic(mnemonic string) (*Wallet, error)

NewFromMnemonic returns a new wallet from a BIP-39 mnemonic.

func NewFromSeed 

func NewFromSeed(seed []byte) (*Wallet, error)

NewFromSeed returns a new wallet from a BIP-39 seed.

func (*Wallet) Accounts 

func (w *Wallet) Accounts() []accounts.Account

Accounts implements accounts.Wallet, returning the list of accounts pinned to the wallet. If self-derivation was enabled, the account list is periodically expanded based on current chain state.

func (*Wallet) Address 

func (w *Wallet) Address(account accounts.Account) (common.Address, error)

Address returns the address of the account.

func (*Wallet) AddressBytes 

func (w *Wallet) AddressBytes(account accounts.Account) ([]byte, error)

AddressBytes returns the address in bytes format of the account.

func (*Wallet) AddressHex 

func (w *Wallet) AddressHex(account accounts.Account) (string, error)

AddressHex returns the address in hex string format of the account.

func (*Wallet) CheckMnemonic 

func (w *Wallet) CheckMnemonic(mnemonic string) bool

CheckMnemonic check mnemonic if equal

func (*Wallet) Close 

func (w *Wallet) Close() error

Close implements accounts.Wallet, however this does nothing since this is not a hardware device.

func (*Wallet) Contains 

func (w *Wallet) Contains(account accounts.Account) bool

Contains implements accounts.Wallet, returning whether a particular account is or is not pinned into this wallet instance.

func (*Wallet) Derive 

func (w *Wallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error)

Derive implements accounts.Wallet, deriving a new account at the specific derivation path. If pin is set to true, the account will be added to the list of tracked accounts.

func (*Wallet) Open 

func (w *Wallet) Open(passphrase string) error

Open implements accounts.Wallet, however this does nothing since this is not a hardware device.

func (*Wallet) Path 

func (w *Wallet) Path(account accounts.Account) (string, error)

Path return the derivation path of the account.

func (*Wallet) PrivateKey 

func (w *Wallet) PrivateKey(account accounts.Account) (*ecdsa.PrivateKey, error)

PrivateKey returns the ECDSA private key of the account.

func (*Wallet) PrivateKeyBytes 

func (w *Wallet) PrivateKeyBytes(account accounts.Account) ([]byte, error)

PrivateKeyBytes returns the ECDSA private key in bytes format of the account.

func (*Wallet) PrivateKeyHex 

func (w *Wallet) PrivateKeyHex(account accounts.Account) (string, error)

PrivateKeyHex return the ECDSA private key in hex string format of the account.

func (*Wallet) PublicKey 

func (w *Wallet) PublicKey(account accounts.Account) (*ecdsa.PublicKey, error)

PublicKey returns the ECDSA public key of the account.

func (*Wallet) PublicKeyBytes 

func (w *Wallet) PublicKeyBytes(account accounts.Account) ([]byte, error)

PublicKeyBytes returns the ECDSA public key in bytes format of the account.

func (*Wallet) PublicKeyHex 

func (w *Wallet) PublicKeyHex(account accounts.Account) (string, error)

PublicKeyHex return the ECDSA public key in hex string format of the account.

func (*Wallet) SelfDerive 

func (w *Wallet) SelfDerive(base accounts.DerivationPath, chain ethereum.ChainStateReader)

SelfDerive implements accounts.Wallet, trying to discover accounts that the user used previously (based on the chain state), but ones that he/she did not explicitly pin to the wallet manually. To avoid chain head monitoring, self derivation only runs during account listing (and even then throttled).

func (*Wallet) SignHash 

func (w *Wallet) SignHash(account accounts.Account, hash []byte) ([]byte, error)

SignHash implements accounts.Wallet, which allows signing arbitrary data.

func (*Wallet) SignHashWithPassphrase 

func (w *Wallet) SignHashWithPassphrase(account accounts.Account, passphrase string, hash []byte) ([]byte, error)

SignHashWithPassphrase implements accounts.Wallet, attempting to sign the given hash with the given account using the passphrase as extra authentication.

func (*Wallet) SignTx 

func (w *Wallet) SignTx(account accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTx implements accounts.Wallet, which allows the account to sign an Ethereum transaction.

func (*Wallet) SignTxWithPassphrase 

func (w *Wallet) SignTxWithPassphrase(account accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTxWithPassphrase implements accounts.Wallet, attempting to sign the given transaction with the given account using passphrase as extra authentication.

func (*Wallet) Status 

func (w *Wallet) Status() (string, error)

Status implements accounts.Wallet, returning a custom status message from the underlying vendor-specific hardware wallet implementation, however this does nothing since this is not a hardware device.

func (*Wallet) URL 

func (w *Wallet) URL() accounts.URL

URL implements accounts.Wallet, returning the URL of the device that the wallet is on, however this does nothing since this is not a hardware device.

func (*Wallet) Unpin 

func (w *Wallet) Unpin(account accounts.Account) error

Unpin unpins account from list of pinned accounts.

Source Files

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Directories

Path Synopsis

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