mirror of https://github.com/status-im/go-waku.git
81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
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package keygen
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/ethereum/go-ethereum/accounts/keystore"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/urfave/cli/v2"
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"github.com/waku-org/go-waku/waku/v2/utils"
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"go.uber.org/zap"
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)
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// Command generates a key file used to generate the node's peerID, encrypted with an optional password
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var Command = cli.Command{
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Name: "generate-key",
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Usage: "Generate private key file at path specified in --key-file with the password defined by --key-password",
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Action: func(cCtx *cli.Context) error {
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if err := generateKeyFile(Options.KeyFile, []byte(Options.KeyPasswd), Options.Overwrite); err != nil {
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utils.Logger().Fatal("could not write keyfile", zap.Error(err))
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}
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return nil
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},
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Flags: []cli.Flag{
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KeyFile,
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KeyPassword,
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Overwrite,
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},
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}
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func checkForFileExistence(path string, overwrite bool) error {
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_, err := os.Stat(path)
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if err == nil && !overwrite {
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return fmt.Errorf("%s already exists. Use --overwrite to overwrite the file", path)
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}
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if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
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return err
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}
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return nil
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}
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func generatePrivateKey() ([]byte, error) {
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key, err := crypto.GenerateKey()
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if err != nil {
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return nil, err
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}
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return key.D.Bytes(), nil
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}
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func writeKeyFile(path string, key []byte, passwd []byte) error {
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encryptedK, err := keystore.EncryptDataV3(key, passwd, keystore.StandardScryptN, keystore.StandardScryptP)
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if err != nil {
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return err
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}
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output, err := json.Marshal(encryptedK)
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if err != nil {
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return err
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}
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return os.WriteFile(path, output, 0600)
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}
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func generateKeyFile(path string, passwd []byte, overwrite bool) error {
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if err := checkForFileExistence(path, overwrite); err != nil {
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return err
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}
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key, err := generatePrivateKey()
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if err != nil {
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return err
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}
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return writeKeyFile(path, key, passwd)
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}
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