13af276418
This change introduces
ethkey changepassphrase <keyfile>
to change the passphrase of a key file.
73 lines
2.0 KiB
Go
73 lines
2.0 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"strings"
|
|
|
|
"github.com/ethereum/go-ethereum/accounts/keystore"
|
|
"github.com/ethereum/go-ethereum/cmd/utils"
|
|
"gopkg.in/urfave/cli.v1"
|
|
)
|
|
|
|
var newPassphraseFlag = cli.StringFlag{
|
|
Name: "newpasswordfile",
|
|
Usage: "the file that contains the new passphrase for the keyfile",
|
|
}
|
|
|
|
var commandChangePassphrase = cli.Command{
|
|
Name: "changepassphrase",
|
|
Usage: "change the passphrase on a keyfile",
|
|
ArgsUsage: "<keyfile>",
|
|
Description: `
|
|
Change the passphrase of a keyfile.`,
|
|
Flags: []cli.Flag{
|
|
passphraseFlag,
|
|
newPassphraseFlag,
|
|
},
|
|
Action: func(ctx *cli.Context) error {
|
|
keyfilepath := ctx.Args().First()
|
|
|
|
// Read key from file.
|
|
keyjson, err := ioutil.ReadFile(keyfilepath)
|
|
if err != nil {
|
|
utils.Fatalf("Failed to read the keyfile at '%s': %v", keyfilepath, err)
|
|
}
|
|
|
|
// Decrypt key with passphrase.
|
|
passphrase := getPassphrase(ctx)
|
|
key, err := keystore.DecryptKey(keyjson, passphrase)
|
|
if err != nil {
|
|
utils.Fatalf("Error decrypting key: %v", err)
|
|
}
|
|
|
|
// Get a new passphrase.
|
|
fmt.Println("Please provide a new passphrase")
|
|
var newPhrase string
|
|
if passFile := ctx.String(newPassphraseFlag.Name); passFile != "" {
|
|
content, err := ioutil.ReadFile(passFile)
|
|
if err != nil {
|
|
utils.Fatalf("Failed to read new passphrase file '%s': %v", passFile, err)
|
|
}
|
|
newPhrase = strings.TrimRight(string(content), "\r\n")
|
|
} else {
|
|
newPhrase = promptPassphrase(true)
|
|
}
|
|
|
|
// Encrypt the key with the new passphrase.
|
|
newJson, err := keystore.EncryptKey(key, newPhrase, keystore.StandardScryptN, keystore.StandardScryptP)
|
|
if err != nil {
|
|
utils.Fatalf("Error encrypting with new passphrase: %v", err)
|
|
}
|
|
|
|
// Then write the new keyfile in place of the old one.
|
|
if err := ioutil.WriteFile(keyfilepath, newJson, 600); err != nil {
|
|
utils.Fatalf("Error writing new keyfile to disk: %v", err)
|
|
}
|
|
|
|
// Don't print anything. Just return successfully,
|
|
// producing a positive exit code.
|
|
return nil
|
|
},
|
|
}
|