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package main
import (
"encoding/hex"
"fmt"
"os"
"github.com/dexon-foundation/dexon/cmd/utils"
"github.com/dexon-foundation/dexon/crypto"
"gopkg.in/urfave/cli.v1"
)
const (
defaultKeyfileName = "node.key"
)
// Git SHA1 commit hash of the release (set via linker flags)
var gitCommit = ""
var app *cli.App
func init() {
app = utils.NewApp(gitCommit, "DEXON node key manager")
app.Commands = []cli.Command{
commandGenerate,
commandInspect,
commandPK2Addr,
}
}
var commandGenerate = cli.Command{
Name: "generate",
Usage: "generate new keyfile",
ArgsUsage: "[ <keyfile> ]",
Description: `Generate a new node key.`,
Action: func(ctx *cli.Context) error {
// Check if keyfile path given and make sure it doesn't already exist.
keyfilepath := ctx.Args().First()
if keyfilepath == "" {
keyfilepath = defaultKeyfileName
}
if _, err := os.Stat(keyfilepath); err == nil {
utils.Fatalf("Keyfile already exists at %s.", keyfilepath)
} else if !os.IsNotExist(err) {
utils.Fatalf("Error checking if keyfile exists: %v", err)
}
privKey, err := crypto.GenerateKey()
if err != nil {
utils.Fatalf("Failed to generate random private key: %v", err)
}
address := crypto.PubkeyToAddress(privKey.PublicKey)
err = crypto.SaveECDSA(keyfilepath, privKey)
if err != nil {
utils.Fatalf("Failed to save keyfile: %v", err)
}
fmt.Printf("Node Address: %s\n", address.String())
fmt.Printf("Public Key: 0x%s\n",
hex.EncodeToString(crypto.FromECDSAPub(&privKey.PublicKey)))
return nil
},
}
var commandInspect = cli.Command{
Name: "inspect",
Usage: "inspect a keyfile",
ArgsUsage: "[ <keyfile> ]",
Description: `Generate a new node key.`,
Action: func(ctx *cli.Context) error {
keyfilepath := ctx.Args().First()
privKey, err := crypto.LoadECDSA(keyfilepath)
if err != nil {
utils.Fatalf("Failed to read key file: %v", err)
}
address := crypto.PubkeyToAddress(privKey.PublicKey)
fmt.Printf("Node Address: %s\n", address.String())
fmt.Printf("Public Key: 0x%s\n",
hex.EncodeToString(crypto.FromECDSAPub(&privKey.PublicKey)))
return nil
},
}
var commandPK2Addr = cli.Command{
Name: "pk2addr",
Usage: "public key to address",
ArgsUsage: "publickey",
Description: `Convert public key to address`,
Action: func(ctx *cli.Context) error {
pk := ctx.Args().First()
if pk[1] == 'x' {
pk = pk[2:]
}
pkhex, err := hex.DecodeString(pk)
if err != nil {
panic(err)
}
key, err := crypto.UnmarshalPubkey(pkhex)
if err != nil {
panic(err)
}
address := crypto.PubkeyToAddress(*key)
fmt.Printf("Node Address: %s\n", address.String())
return nil
},
}
func main() {
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
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