135 lines
3.0 KiB
Go
135 lines
3.0 KiB
Go
package crypto
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/ethereum/go-ethereum/ethutil"
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
)
|
|
|
|
var keylogger = logger.NewLogger("KEY")
|
|
|
|
type KeyManager struct {
|
|
keyRing *KeyRing
|
|
session string
|
|
keyStore KeyStore // interface
|
|
keyRings map[string]*KeyRing // cache
|
|
keyPair *KeyPair
|
|
}
|
|
|
|
func NewDBKeyManager(db ethutil.Database) *KeyManager {
|
|
return &KeyManager{keyStore: &DBKeyStore{db: db}, keyRings: make(map[string]*KeyRing)}
|
|
}
|
|
|
|
func NewFileKeyManager(basedir string) *KeyManager {
|
|
return &KeyManager{keyStore: &FileKeyStore{basedir: basedir}, keyRings: make(map[string]*KeyRing)}
|
|
}
|
|
|
|
func (k *KeyManager) KeyPair() *KeyPair {
|
|
return k.keyPair
|
|
}
|
|
|
|
func (k *KeyManager) KeyRing() *KeyPair {
|
|
return k.keyPair
|
|
}
|
|
|
|
func (k *KeyManager) PrivateKey() []byte {
|
|
return k.keyPair.PrivateKey
|
|
}
|
|
|
|
func (k *KeyManager) PublicKey() []byte {
|
|
return k.keyPair.PublicKey
|
|
}
|
|
|
|
func (k *KeyManager) Address() []byte {
|
|
return k.keyPair.Address()
|
|
}
|
|
|
|
func (k *KeyManager) save(session string, keyRing *KeyRing) error {
|
|
err := k.keyStore.Save(session, keyRing)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
k.keyRings[session] = keyRing
|
|
return nil
|
|
}
|
|
|
|
func (k *KeyManager) load(session string) (*KeyRing, error) {
|
|
keyRing, found := k.keyRings[session]
|
|
if !found {
|
|
var err error
|
|
keyRing, err = k.keyStore.Load(session)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return keyRing, nil
|
|
}
|
|
|
|
func cursorError(cursor int, len int) error {
|
|
return fmt.Errorf("cursor %d out of range (0..%d)", cursor, len)
|
|
}
|
|
|
|
func (k *KeyManager) reset(session string, cursor int, keyRing *KeyRing) error {
|
|
if cursor >= keyRing.Len() {
|
|
return cursorError(cursor, keyRing.Len())
|
|
}
|
|
lock := &sync.Mutex{}
|
|
lock.Lock()
|
|
defer lock.Unlock()
|
|
err := k.save(session, keyRing)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
k.session = session
|
|
k.keyRing = keyRing
|
|
k.keyPair = keyRing.GetKeyPair(cursor)
|
|
return nil
|
|
}
|
|
|
|
func (k *KeyManager) SetCursor(cursor int) error {
|
|
if cursor >= k.keyRing.Len() {
|
|
return cursorError(cursor, k.keyRing.Len())
|
|
}
|
|
k.keyPair = k.keyRing.GetKeyPair(cursor)
|
|
return nil
|
|
}
|
|
|
|
func (k *KeyManager) Init(session string, cursor int, force bool) error {
|
|
var keyRing *KeyRing
|
|
if !force {
|
|
var err error
|
|
keyRing, err = k.load(session)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if keyRing == nil {
|
|
keyRing = NewGeneratedKeyRing(1)
|
|
keylogger.Infof("Created keypair. Private key: %x\n", keyRing.keys[0].PrivateKey)
|
|
}
|
|
return k.reset(session, cursor, keyRing)
|
|
}
|
|
|
|
func (k *KeyManager) InitFromSecretsFile(session string, cursor int, secretsfile string) error {
|
|
keyRing, err := NewKeyRingFromFile(secretsfile)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return k.reset(session, cursor, keyRing)
|
|
}
|
|
|
|
func (k *KeyManager) InitFromString(session string, cursor int, secrets string) error {
|
|
keyRing, err := NewKeyRingFromString(secrets)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return k.reset(session, cursor, keyRing)
|
|
}
|
|
|
|
func (k *KeyManager) Export(dir string) error {
|
|
fileKeyStore := FileKeyStore{dir}
|
|
return fileKeyStore.Save(k.session, k.keyRing)
|
|
}
|