/
manager.go
289 lines (241 loc) · 7.19 KB
/
manager.go
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package entropystore
import (
"fmt"
"github.com/pkg/errors"
"github.com/tyler-smith/go-bip39"
walleterrors "github.com/vitelabs/go-vite/v2/common/errors"
"github.com/vitelabs/go-vite/v2/common/types"
"github.com/vitelabs/go-vite/v2/crypto/ed25519"
"github.com/vitelabs/go-vite/v2/log15"
"github.com/vitelabs/go-vite/v2/wallet/hd-bip/derivation"
)
const (
Locked = "Locked"
UnLocked = "Unlocked"
DefaultMaxIndex = uint32(100)
)
type UnlockEvent struct {
EntropyStoreFile string
PrimaryAddr types.Address // represent which seed we use the seed`s PrimaryAddress represents the seed
event string // "Unlocked Locked"
}
func (ue UnlockEvent) String() string {
return ue.EntropyStoreFile + " " + ue.PrimaryAddr.String() + " " + ue.event
}
func (ue UnlockEvent) Unlocked() bool {
return ue.event == UnLocked
}
type Manager struct {
primaryAddr types.Address
ks CryptoStore
maxSearchIndex uint32
unlockedSeed []byte
unlockedEntropy []byte
unlockChangedLis func(event UnlockEvent)
log log15.Logger
}
func NewManager(entropyStoreFilename string, primaryAddr types.Address, maxSearchIndex uint32) *Manager {
return &Manager{
primaryAddr: primaryAddr,
ks: CryptoStore{entropyStoreFilename},
maxSearchIndex: maxSearchIndex,
log: log15.New("module", "wallet/keystore/Manager"),
}
}
func (km *Manager) IsAddrUnlocked(addr types.Address) bool {
if !km.IsUnlocked() {
return false
}
_, _, e := FindAddrFromSeed(km.unlockedSeed, addr, km.maxSearchIndex)
if e != nil {
return false
}
return true
}
func (km *Manager) IsUnlocked() bool {
return km.unlockedSeed != nil
}
func (km *Manager) ListAddress(from, to uint32) ([]types.Address, error) {
if from > to {
return nil, errors.New("from > to")
}
if km.unlockedSeed == nil {
return nil, walleterrors.ErrLocked
}
addr := make([]types.Address, to-from)
addrIndex := 0
for i := from; i < to; i++ {
_, key, e := km.DeriveForIndexPath(i)
if e != nil {
return nil, e
}
address, e := key.Address()
if e != nil {
return nil, e
}
addr[addrIndex] = *address
addrIndex++
}
return addr, nil
}
func (km *Manager) Unlock(passphrase string) error {
seed, entropy, e := km.ks.ExtractSeed(passphrase)
if e != nil {
return e
}
km.unlockedSeed = seed
km.unlockedEntropy = entropy
if km.unlockChangedLis != nil {
km.unlockChangedLis(UnlockEvent{
EntropyStoreFile: km.GetEntropyStoreFile(),
PrimaryAddr: km.primaryAddr,
event: UnLocked})
}
return nil
}
func (km *Manager) Lock() {
km.unlockedSeed = nil
if km.unlockChangedLis != nil {
km.unlockChangedLis(UnlockEvent{
EntropyStoreFile: km.GetEntropyStoreFile(),
PrimaryAddr: km.primaryAddr,
event: Locked})
}
}
func (km *Manager) FindAddrWithPassphrase(passphrase string, addr types.Address) (key *derivation.Key, index uint32, e error) {
seed, _, err := km.ks.ExtractSeed(passphrase)
if err != nil {
return nil, 0, err
}
return FindAddrFromSeed(seed, addr, km.maxSearchIndex)
}
func (km *Manager) FindAddr(addr types.Address) (key *derivation.Key, index uint32, e error) {
if !km.IsUnlocked() {
return nil, 0, walleterrors.ErrLocked
}
return FindAddrFromSeed(km.unlockedSeed, addr, km.maxSearchIndex)
}
func (km *Manager) SignData(a types.Address, data []byte) (signedData, pubkey []byte, err error) {
if !km.IsUnlocked() {
return nil, nil, walleterrors.ErrLocked
}
key, _, e := FindAddrFromSeed(km.unlockedSeed, a, km.maxSearchIndex)
if e != nil {
return nil, nil, walleterrors.ErrAddressNotFound
}
return key.SignData(data)
}
func (km *Manager) GetPrivateKey(a types.Address) (ed25519.PrivateKey, error) {
key, _, e := FindAddrFromSeed(km.unlockedSeed, a, km.maxSearchIndex)
if e != nil {
return nil, walleterrors.ErrAddressNotFound
}
return key.PrivateKey()
}
func (km *Manager) SignDataWithPassphrase(addr types.Address, passphrase string, data []byte) (signedData, pubkey []byte, err error) {
seed, _, err := km.ks.ExtractSeed(passphrase)
if err != nil {
return nil, nil, err
}
key, _, e := FindAddrFromSeed(seed, addr, km.maxSearchIndex)
if e != nil {
return nil, nil, e
}
return key.SignData(data)
}
func (km *Manager) DeriveForFullPath(path string) (fpath string, key *derivation.Key, err error) {
if km.unlockedSeed == nil {
return "", nil, walleterrors.ErrLocked
}
key, e := derivation.DeriveForPath(path, km.unlockedSeed)
if e != nil {
return "", nil, e
}
return path, key, nil
}
func (km *Manager) DeriveForIndexPath(index uint32) (path string, key *derivation.Key, err error) {
return km.DeriveForFullPath(fmt.Sprintf(derivation.ViteAccountPathFormat, index))
}
func (km *Manager) DeriveForFullPathWithPassphrase(path, passphrase string) (fpath string, key *derivation.Key, err error) {
seed, _, err := km.ks.ExtractSeed(passphrase)
if err != nil {
return "", nil, err
}
key, e := derivation.DeriveForPath(path, seed)
if e != nil {
return "", nil, e
}
return path, key, nil
}
func (km *Manager) DeriveForIndexPathWithPassphrase(index uint32, passphrase string) (path string, key *derivation.Key, err error) {
return km.DeriveForFullPathWithPassphrase(fmt.Sprintf(derivation.ViteAccountPathFormat, index), passphrase)
}
func (km Manager) GetPrimaryAddr() (primaryAddr types.Address) {
return km.primaryAddr
}
func (km Manager) GetEntropyStoreFile() string {
return km.ks.EntropyStoreFilename
}
func (km Manager) ExtractMnemonic(passphrase string) (string, error) {
entropy, err := km.ks.ExtractEntropy(passphrase)
if err != nil {
return "", err
}
return bip39.NewMnemonic(entropy)
}
func StoreNewEntropy(storeDir string, mnemonic string, pwd string, maxSearchIndex uint32) (*Manager, error) {
entropy, e := bip39.EntropyFromMnemonic(mnemonic)
if e != nil {
return nil, e
}
primaryAddress, e := MnemonicToPrimaryAddr(mnemonic)
filename := FullKeyFileName(storeDir, *primaryAddress)
ss := CryptoStore{filename}
e = ss.StoreEntropy(entropy, *primaryAddress, pwd)
if e != nil {
return nil, e
}
return NewManager(filename, *primaryAddress, maxSearchIndex), nil
}
func MnemonicToPrimaryAddr(mnemonic string) (primaryAddress *types.Address, e error) {
seed := bip39.NewSeed(mnemonic, "")
primaryAddress, e = derivation.GetPrimaryAddress(seed)
if e != nil {
return nil, e
}
return primaryAddress, nil
}
func NewMnemonic() (mnemonic string, err error) {
entropy, err := bip39.NewEntropy(256)
if err != nil {
return "", err
}
mnemonic, err = bip39.NewMnemonic(entropy)
if err != nil {
return "", err
}
return mnemonic, nil
}
// it is very fast(in my mac 2.8GHZ intel cpu 10Ks search cost 728ms) so we dont need cache the relation
func FindAddrFromSeed(seed []byte, addr types.Address, maxSearchIndex uint32) (key *derivation.Key, index uint32, e error) {
for i := uint32(0); i < maxSearchIndex; i++ {
key, e := derivation.DeriveWithIndex(i, seed)
if e != nil {
return nil, 0, e
}
genAddr, e := key.Address()
if e != nil {
return nil, 0, e
}
if addr == *genAddr {
return key, i, nil
}
}
return nil, 0, walleterrors.ErrAddressNotFound
}
func (km *Manager) SetLockEventListener(lis func(event UnlockEvent)) {
km.unlockChangedLis = lis
}
func (km *Manager) RemoveUnlockChangeChannel() {
km.unlockChangedLis = nil
}