func (am *Manager) Import(path string, keyAuth string) (Account, error) {
privateKeyECDSA, err := crypto.LoadECDSA(path)
if err != nil {
return Account{}, err
}
key := crypto.NewKeyFromECDSA(privateKeyECDSA)
if err = am.keyStore.StoreKey(key, keyAuth); err != nil {
return Account{}, err
}
return Account{Address: key.Address}, nil
}
// MakeNodeKey creates a node key from set command line flags.
func MakeNodeKey(ctx *cli.Context) (key *ecdsa.PrivateKey) {
hex, file := ctx.GlobalString(NodeKeyHexFlag.Name), ctx.GlobalString(NodeKeyFileFlag.Name)
var err error
switch {
case file != "" && hex != "":
Fatalf("Options %q and %q are mutually exclusive", NodeKeyFileFlag.Name, NodeKeyHexFlag.Name)
case file != "":
if key, err = crypto.LoadECDSA(file); err != nil {
Fatalf("Option %q: %v", NodeKeyFileFlag.Name, err)
}
case hex != "":
if key, err = crypto.HexToECDSA(hex); err != nil {
Fatalf("Option %q: %v", NodeKeyHexFlag.Name, err)
}
}
return key
}
func main() {
var (
listenAddr = flag.String("addr", ":30301", "listen address")
genKey = flag.String("genkey", "", "generate a node key and quit")
nodeKeyFile = flag.String("nodekey", "", "private key filename")
nodeKeyHex = flag.String("nodekeyhex", "", "private key as hex (for testing)")
natdesc = flag.String("nat", "none", "port mapping mechanism (any|none|upnp|pmp|extip:<IP>)")
nodeKey *ecdsa.PrivateKey
err error
)
flag.Parse()
logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.DebugLevel))
if *genKey != "" {
writeKey(*genKey)
os.Exit(0)
}
natm, err := nat.Parse(*natdesc)
if err != nil {
log.Fatalf("-nat: %v", err)
}
switch {
case *nodeKeyFile == "" && *nodeKeyHex == "":
log.Fatal("Use -nodekey or -nodekeyhex to specify a private key")
case *nodeKeyFile != "" && *nodeKeyHex != "":
log.Fatal("Options -nodekey and -nodekeyhex are mutually exclusive")
case *nodeKeyFile != "":
if nodeKey, err = crypto.LoadECDSA(*nodeKeyFile); err != nil {
log.Fatalf("-nodekey: %v", err)
}
case *nodeKeyHex != "":
if nodeKey, err = crypto.HexToECDSA(*nodeKeyHex); err != nil {
log.Fatalf("-nodekeyhex: %v", err)
}
}
if _, err := discover.ListenUDP(nodeKey, *listenAddr, natm, ""); err != nil {
log.Fatal(err)
}
select {}
}
func (cfg *Config) nodeKey() (*ecdsa.PrivateKey, error) {
// use explicit key from command line args if set
if cfg.NodeKey != nil {
return cfg.NodeKey, nil
}
// use persistent key if present
keyfile := filepath.Join(cfg.DataDir, "nodekey")
key, err := crypto.LoadECDSA(keyfile)
if err == nil {
return key, nil
}
// no persistent key, generate and store a new one
if key, err = crypto.GenerateKey(); err != nil {
return nil, fmt.Errorf("could not generate server key: %v", err)
}
if err := crypto.SaveECDSA(keyfile, key); err != nil {
glog.V(logger.Error).Infoln("could not persist nodekey: ", err)
}
return key, nil
}