Esempio n. 1
0
// 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
}
Esempio n. 2
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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
}
Esempio n. 3
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// MakeNodeKey creates a node key from set command line flags, either loading it
// from a file or as a specified hex value. If neither flags were provided, this
// method returns nil and an emphemeral key is to be generated.
func MakeNodeKey(ctx *cli.Context) *ecdsa.PrivateKey {
	var (
		hex  = ctx.GlobalString(NodeKeyHexFlag.Name)
		file = ctx.GlobalString(NodeKeyFileFlag.Name)

		key *ecdsa.PrivateKey
		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
}