mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-23 03:51:29 +00:00
82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
package derived
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import (
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"fmt"
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"os"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/shared/promptutil"
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"github.com/prysmaticlabs/prysm/shared/rand"
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"github.com/tyler-smith/go-bip39"
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)
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const confirmationText = "Confirm you have written down the recovery words somewhere safe (offline) [y|Y]"
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// EnglishMnemonicGenerator implements methods for creating
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// mnemonic seed phrases in english using a given
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// source of entropy such as a private key.
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type EnglishMnemonicGenerator struct {
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skipMnemonicConfirm bool
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}
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func GenerateAndConfirmMnemonic(
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skipMnemonicConfirm bool,
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) (string, error) {
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mnemonicRandomness := make([]byte, 32)
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if _, err := rand.NewGenerator().Read(mnemonicRandomness); err != nil {
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return "", errors.Wrap(err, "could not initialize mnemonic source of randomness")
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}
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m := &EnglishMnemonicGenerator{
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skipMnemonicConfirm: skipMnemonicConfirm,
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}
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phrase, err := m.Generate(mnemonicRandomness)
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if err != nil {
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return "", errors.Wrap(err, "could not generate wallet seed")
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}
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if err := m.ConfirmAcknowledgement(phrase); err != nil {
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return "", errors.Wrap(err, "could not confirm mnemonic acknowledgement")
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}
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return phrase, nil
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}
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// Generate a mnemonic seed phrase in english using a source of
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// entropy given as raw bytes.
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func (m *EnglishMnemonicGenerator) Generate(data []byte) (string, error) {
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return bip39.NewMnemonic(data)
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}
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// ConfirmAcknowledgement displays the mnemonic phrase to the user
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// and confirms the user has written down the phrase securely offline.
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func (m *EnglishMnemonicGenerator) ConfirmAcknowledgement(phrase string) error {
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log.Info(
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"Write down the sentence below, as it is your only " +
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"means of recovering your wallet",
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)
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fmt.Printf(
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`=================Wallet Seed Recovery Phrase====================
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%s
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===================================================================`,
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phrase)
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fmt.Println("")
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if m.skipMnemonicConfirm {
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return nil
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}
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// Confirm the user has written down the mnemonic phrase offline.
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_, err := promptutil.ValidatePrompt(os.Stdin, confirmationText, promptutil.ValidateConfirmation)
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if err != nil {
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log.Errorf("Could not confirm acknowledgement of prompt, please enter y")
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}
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return nil
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}
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// Uses the provided mnemonic seed phrase to generate the
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// appropriate seed file for recovering a derived wallets.
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func seedFromMnemonic(mnemonic, mnemonicPassphrase string) ([]byte, error) {
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if ok := bip39.IsMnemonicValid(mnemonic); !ok {
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return nil, bip39.ErrInvalidMnemonic
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}
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return bip39.NewSeed(mnemonic, mnemonicPassphrase), nil
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}
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