forked from evmos/ethermint
-
Notifications
You must be signed in to change notification settings - Fork 7
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Browse files
Browse the repository at this point in the history
- Loading branch information
Showing
6 changed files
with
376 additions
and
213 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| // NOTE: This code is being used as test helper functions. | ||
| package hd | ||
|
|
||
| import ( | ||
| "crypto/ecdsa" | ||
| "errors" | ||
| "os" | ||
| "sync" | ||
|
|
||
| "github.com/ethereum/go-ethereum/accounts" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/crypto" | ||
|
|
||
| "github.com/btcsuite/btcd/btcutil/hdkeychain" | ||
| "github.com/btcsuite/btcd/chaincfg" | ||
| bip39 "github.com/tyler-smith/go-bip39" | ||
| ) | ||
|
|
||
| const issue179FixEnvar = "GO_ETHEREUM_HDWALLET_FIX_ISSUE_179" | ||
|
|
||
| // Wallet is the underlying wallet struct. | ||
| type Wallet struct { | ||
| mnemonic string | ||
| masterKey *hdkeychain.ExtendedKey | ||
| seed []byte | ||
| paths map[common.Address]accounts.DerivationPath | ||
| accounts []accounts.Account | ||
| stateLock sync.RWMutex | ||
| fixIssue172 bool | ||
| } | ||
|
|
||
| // NewFromMnemonic returns a new wallet from a BIP-39 mnemonic. | ||
| func NewFromMnemonic(mnemonic string) (*Wallet, error) { | ||
| if mnemonic == "" { | ||
| return nil, errors.New("mnemonic is required") | ||
| } | ||
|
|
||
| if !bip39.IsMnemonicValid(mnemonic) { | ||
| return nil, errors.New("mnemonic is invalid") | ||
| } | ||
|
|
||
| seed, err := NewSeedFromMnemonic(mnemonic) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| wallet, err := newWallet(seed) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| wallet.mnemonic = mnemonic | ||
|
|
||
| return wallet, nil | ||
| } | ||
|
|
||
| // NewSeedFromMnemonic returns a BIP-39 seed based on a BIP-39 mnemonic. | ||
| func NewSeedFromMnemonic(mnemonic string) ([]byte, error) { | ||
| if mnemonic == "" { | ||
| return nil, errors.New("mnemonic is required") | ||
| } | ||
|
|
||
| return bip39.NewSeedWithErrorChecking(mnemonic, "") | ||
| } | ||
|
|
||
| func newWallet(seed []byte) (*Wallet, error) { | ||
| masterKey, err := hdkeychain.NewMaster(seed, &chaincfg.MainNetParams) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &Wallet{ | ||
| masterKey: masterKey, | ||
| seed: seed, | ||
| accounts: []accounts.Account{}, | ||
| paths: map[common.Address]accounts.DerivationPath{}, | ||
| fixIssue172: false || len(os.Getenv(issue179FixEnvar)) > 0, | ||
| }, nil | ||
| } | ||
|
|
||
| // Derive implements accounts.Wallet, deriving a new account at the specific | ||
| // derivation path. If pin is set to true, the account will be added to the list | ||
| // of tracked accounts. | ||
| func (w *Wallet) Derive(path accounts.DerivationPath, pin bool) (accounts.Account, error) { | ||
| // Try to derive the actual account and update its URL if successful | ||
| w.stateLock.RLock() // Avoid device disappearing during derivation | ||
|
|
||
| address, err := w.deriveAddress(path) | ||
|
|
||
| w.stateLock.RUnlock() | ||
|
|
||
| // If an error occurred or no pinning was requested, return | ||
| if err != nil { | ||
| return accounts.Account{}, err | ||
| } | ||
|
|
||
| account := accounts.Account{ | ||
| Address: address, | ||
| URL: accounts.URL{ | ||
| Scheme: "", | ||
| Path: path.String(), | ||
| }, | ||
| } | ||
|
|
||
| if !pin { | ||
| return account, nil | ||
| } | ||
|
|
||
| // Pinning needs to modify the state | ||
| w.stateLock.Lock() | ||
| defer w.stateLock.Unlock() | ||
|
|
||
| if _, ok := w.paths[address]; !ok { | ||
| w.accounts = append(w.accounts, account) | ||
| w.paths[address] = path | ||
| } | ||
|
|
||
| return account, nil | ||
| } | ||
|
|
||
| // MustParseDerivationPath parses the derivation path in string format into | ||
| // []uint32 but will panic if it can't parse it. | ||
| func MustParseDerivationPath(path string) accounts.DerivationPath { | ||
| parsed, err := accounts.ParseDerivationPath(path) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| return parsed | ||
| } | ||
|
|
||
| // DerivePrivateKey derives the private key of the derivation path. | ||
| func (w *Wallet) derivePrivateKey(path accounts.DerivationPath) (*ecdsa.PrivateKey, error) { | ||
| var err error | ||
| key := w.masterKey | ||
| for _, n := range path { | ||
| if w.fixIssue172 && key.IsAffectedByIssue172() { | ||
| key, err = key.Derive(n) | ||
| } else { | ||
| //lint:ignore SA1019 this is used for testing only | ||
| //nolint:all | ||
| key, err = key.DeriveNonStandard(n) | ||
| } | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
|
|
||
| privateKey, err := key.ECPrivKey() | ||
| privateKeyECDSA := privateKey.ToECDSA() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return privateKeyECDSA, nil | ||
| } | ||
|
|
||
| // derivePublicKey derives the public key of the derivation path. | ||
| func (w *Wallet) derivePublicKey(path accounts.DerivationPath) (*ecdsa.PublicKey, error) { | ||
| privateKeyECDSA, err := w.derivePrivateKey(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| publicKey := privateKeyECDSA.Public() | ||
| publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey) | ||
| if !ok { | ||
| return nil, errors.New("failed to get public key") | ||
| } | ||
|
|
||
| return publicKeyECDSA, nil | ||
| } | ||
|
|
||
| // DeriveAddress derives the account address of the derivation path. | ||
| func (w *Wallet) deriveAddress(path accounts.DerivationPath) (common.Address, error) { | ||
| publicKeyECDSA, err := w.derivePublicKey(path) | ||
| if err != nil { | ||
| return common.Address{}, err | ||
| } | ||
|
|
||
| address := crypto.PubkeyToAddress(*publicKeyECDSA) | ||
| return address, nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.