// USE WITH CAUTION = this will save an unencrypted private key on disk
// no cli or js interface
func (am *Manager) Export(path string, addr common.Address, keyAuth string) error {
key, err := am.keyStore.GetKey(addr, keyAuth)
if err != nil {
return err
}
return crypto.SaveECDSA(path, key.PrivateKey)
}
// NodeKey retrieves the currently configured private key of the node, checking
// first any manually set key, falling back to the one found in the configured
// data folder. If no key can be found, a new one is generated.
func (c *Config) NodeKey() *ecdsa.PrivateKey {
// Use any specifically configured key
if c.PrivateKey != nil {
return c.PrivateKey
}
// Generate ephemeral key if no datadir is being used
if c.DataDir == "" {
key, err := crypto.GenerateKey()
if err != nil {
glog.Fatalf("Failed to generate ephemeral node key: %v", err)
}
return key
}
// Fall back to persistent key from the data directory
keyfile := filepath.Join(c.DataDir, datadirPrivateKey)
if key, err := crypto.LoadECDSA(keyfile); err == nil {
return key
}
// No persistent key found, generate and store a new one
key, err := crypto.GenerateKey()
if err != nil {
glog.Fatalf("Failed to generate node key: %v", err)
}
if err := crypto.SaveECDSA(keyfile, key); err != nil {
glog.V(logger.Error).Infof("Failed to persist node key: %v", err)
}
return key
}