Example #1
0
// getRedeemScript returns the redeem script for the given P2SH address. It must
// be called with the manager unlocked.
func getRedeemScript(mgr *waddrmgr.Manager, addr *btcutil.AddressScriptHash) ([]byte, error) {
	address, err := mgr.Address(addr)
	if err != nil {
		return nil, err
	}
	return address.(waddrmgr.ManagedScriptAddress).Script()
}
Example #2
0
// TstRunWithManagerUnlocked calls the given callback with the manager unlocked,
// and locks it again before returning.
func TstRunWithManagerUnlocked(t *testing.T, mgr *waddrmgr.Manager, callback func()) {
	if err := mgr.Unlock(privPassphrase); err != nil {
		t.Fatal(err)
	}
	defer mgr.Lock()
	callback()
}
Example #3
0
// convertLegacyKeystore converts all of the addresses in the passed legacy
// key store to the new waddrmgr.Manager format.  Both the legacy keystore and
// the new manager must be unlocked.
func convertLegacyKeystore(legacyKeyStore *keystore.Store, manager *waddrmgr.Manager) error {
	netParams := legacyKeyStore.Net()
	blockStamp := waddrmgr.BlockStamp{
		Height: 0,
		Hash:   *netParams.GenesisHash,
	}
	for _, walletAddr := range legacyKeyStore.ActiveAddresses() {
		switch addr := walletAddr.(type) {
		case keystore.PubKeyAddress:
			privKey, err := addr.PrivKey()
			if err != nil {
				fmt.Printf("WARN: Failed to obtain private key "+
					"for address %v: %v\n", addr.Address(),
					err)
				continue
			}

			wif, err := btcutil.NewWIF((*btcec.PrivateKey)(privKey),
				netParams, addr.Compressed())
			if err != nil {
				fmt.Printf("WARN: Failed to create wallet "+
					"import format for address %v: %v\n",
					addr.Address(), err)
				continue
			}

			_, err = manager.ImportPrivateKey(wif, &blockStamp)
			if err != nil {
				fmt.Printf("WARN: Failed to import private "+
					"key for address %v: %v\n",
					addr.Address(), err)
				continue
			}

		case keystore.ScriptAddress:
			_, err := manager.ImportScript(addr.Script(), &blockStamp)
			if err != nil {
				fmt.Printf("WARN: Failed to import "+
					"pay-to-script-hash script for "+
					"address %v: %v\n", addr.Address(), err)
				continue
			}

		default:
			fmt.Printf("WARN: Skipping unrecognized legacy "+
				"keystore type: %T\n", addr)
			continue
		}
	}

	return nil
}
Example #4
0
func encryptKeys(keys []string, mgr *waddrmgr.Manager, keyType waddrmgr.CryptoKeyType) ([][]byte, error) {
	encryptedKeys := make([][]byte, len(keys))
	var err error
	for i, key := range keys {
		if key == "" {
			encryptedKeys[i] = nil
		} else {
			encryptedKeys[i], err = mgr.Encrypt(keyType, []byte(key))
		}
		if err != nil {
			return nil, err
		}
	}
	return encryptedKeys, nil
}
Example #5
0
// signMultiSigUTXO signs the P2SH UTXO with the given index by constructing a
// script containing all given signatures plus the redeem (multi-sig) script. The
// redeem script is obtained by looking up the address of the given P2SH pkScript
// on the address manager.
// The order of the signatures must match that of the public keys in the multi-sig
// script as OP_CHECKMULTISIG expects that.
// This function must be called with the manager unlocked.
func signMultiSigUTXO(mgr *waddrmgr.Manager, tx *wire.MsgTx, idx int, pkScript []byte, sigs []RawSig) error {
	class, addresses, _, err := txscript.ExtractPkScriptAddrs(pkScript, mgr.ChainParams())
	if err != nil {
		return newError(ErrTxSigning, "unparseable pkScript", err)
	}
	if class != txscript.ScriptHashTy {
		return newError(ErrTxSigning, fmt.Sprintf("pkScript is not P2SH: %s", class), nil)
	}
	redeemScript, err := getRedeemScript(mgr, addresses[0].(*btcutil.AddressScriptHash))
	if err != nil {
		return newError(ErrTxSigning, "unable to retrieve redeem script", err)
	}

	class, _, nRequired, err := txscript.ExtractPkScriptAddrs(redeemScript, mgr.ChainParams())
	if err != nil {
		return newError(ErrTxSigning, "unparseable redeem script", err)
	}
	if class != txscript.MultiSigTy {
		return newError(ErrTxSigning, fmt.Sprintf("redeem script is not multi-sig: %v", class), nil)
	}
	if len(sigs) < nRequired {
		errStr := fmt.Sprintf("not enough signatures; need %d but got only %d", nRequired,
			len(sigs))
		return newError(ErrTxSigning, errStr, nil)
	}

	// Construct the unlocking script.
	// Start with an OP_0 because of the bug in bitcoind, then add nRequired signatures.
	unlockingScript := txscript.NewScriptBuilder().AddOp(txscript.OP_FALSE)
	for _, sig := range sigs[:nRequired] {
		unlockingScript.AddData(sig)
	}

	// Combine the redeem script and the unlocking script to get the actual signature script.
	sigScript := unlockingScript.AddData(redeemScript)
	script, err := sigScript.Script()
	if err != nil {
		return newError(ErrTxSigning, "error building sigscript", err)
	}
	tx.TxIn[idx].SignatureScript = script

	if err := validateSigScript(tx, idx, pkScript); err != nil {
		return err
	}
	return nil
}