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67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"os"
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"strings"
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"syscall"
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"github.com/btcsuite/btcutil/hdkeychain"
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"github.com/lightningnetwork/lnd/aezeed"
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"golang.org/x/crypto/ssh/terminal"
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)
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type showRootKeyCommand struct{}
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func (c *showRootKeyCommand) Execute(_ []string) error {
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// We'll now prompt the user to enter in their 24-word mnemonic.
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fmt.Printf("Input your 24-word mnemonic separated by spaces: ")
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reader := bufio.NewReader(os.Stdin)
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mnemonicStr, err := reader.ReadString('\n')
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if err != nil {
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return err
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}
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// We'll trim off extra spaces, and ensure the mnemonic is all
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// lower case, then populate our request.
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mnemonicStr = strings.TrimSpace(mnemonicStr)
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mnemonicStr = strings.ToLower(mnemonicStr)
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cipherSeedMnemonic := strings.Split(mnemonicStr, " ")
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fmt.Println()
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if len(cipherSeedMnemonic) != 24 {
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return fmt.Errorf("wrong cipher seed mnemonic "+
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"length: got %v words, expecting %v words",
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len(cipherSeedMnemonic), 24)
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}
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// Additionally, the user may have a passphrase, that will also
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// need to be provided so the daemon can properly decipher the
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// cipher seed.
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fmt.Printf("Input your cipher seed passphrase (press enter if " +
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"your seed doesn't have a passphrase): ")
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passphrase, err := terminal.ReadPassword(syscall.Stdin)
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if err != nil {
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return err
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}
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var mnemonic aezeed.Mnemonic
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copy(mnemonic[:], cipherSeedMnemonic[:])
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// If we're unable to map it back into the ciphertext, then either the
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// mnemonic is wrong, or the passphrase is wrong.
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cipherSeed, err := mnemonic.ToCipherSeed(passphrase)
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if err != nil {
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return err
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}
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rootKey, err := hdkeychain.NewMaster(cipherSeed.Entropy[:], chainParams)
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if err != nil {
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return fmt.Errorf("failed to derive master extended key")
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}
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fmt.Printf("\nYour BIP32 HD root key is: %s\n", rootKey.String())
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return nil
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}
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