예제 #1
0
func compute(count *big.Int) (keys [ResultsPerPage]Key, length int) {
	var padded [32]byte

	var i int
	for i = 0; i < ResultsPerPage; i++ {
		// Increment our counter
		count.Add(count, one)

		// Check to make sure we're not out of range
		if count.Cmp(total) > 0 {
			break
		}

		// Copy count value's bytes to padded slice
		copy(padded[32-len(count.Bytes()):], count.Bytes())

		// Get private and public keys
		privKey, public := btcec.PrivKeyFromBytes(btcec.S256(), padded[:])

		// Get compressed and uncompressed addresses for public key
		caddr, _ := btcutil.NewAddressPubKey(public.SerializeCompressed(), &btcnet.MainNetParams)
		uaddr, _ := btcutil.NewAddressPubKey(public.SerializeUncompressed(), &btcnet.MainNetParams)

		// Encode addresses
		wif, _ := btcutil.NewWIF(privKey, &btcnet.MainNetParams, false)
		keys[i].private = wif.String()
		keys[i].number = count.String()
		keys[i].compressed = caddr.EncodeAddress()
		keys[i].uncompressed = uaddr.EncodeAddress()
	}
	return keys, i
}
예제 #2
0
파일: address.go 프로젝트: D-bank/btcwallet
// ExportPrivKey returns the private key associated with the address in Wallet
// Import Format (WIF).
//
// This is part of the ManagedPubKeyAddress interface implementation.
func (a *managedAddress) ExportPrivKey() (*btcutil.WIF, error) {
	pk, err := a.PrivKey()
	if err != nil {
		return nil, err
	}

	return btcutil.NewWIF(pk, a.manager.chainParams, a.compressed)
}
예제 #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
}
예제 #4
0
func RedirectRequest(w http.ResponseWriter, r *http.Request) {
	key := r.URL.Path[36:]

	wif, err := btcutil.DecodeWIF(key)
	if err != nil {
		w.WriteHeader(http.StatusNotFound)
		return
	}

	page, _ := new(big.Int).DivMod(new(big.Int).SetBytes(wif.PrivKey.D.Bytes()), big.NewInt(ResultsPerPage), big.NewInt(ResultsPerPage))
	page.Add(page, one)

	fragment, _ := btcutil.NewWIF(wif.PrivKey, &btcnet.MainNetParams, false)

	http.Redirect(w, r, "/"+page.String()+"#"+fragment.String(), http.StatusTemporaryRedirect)
}
예제 #5
0
func loadTestCredits(w *LightningWallet, numOutputs, btcPerOutput int) error {
	// Import the priv key (converting to WIF) above that controls all our
	// available outputs.
	privKey, _ := btcec.PrivKeyFromBytes(btcec.S256(), testWalletPrivKey)
	if err := w.Unlock(privPass, time.Duration(0)); err != nil {
		return err
	}
	bs := &waddrmgr.BlockStamp{Hash: *genBlockHash(1), Height: 1}
	wif, err := btcutil.NewWIF(privKey, ActiveNetParams, true)
	if err != nil {
		return err
	}
	if _, err := w.ImportPrivateKey(wif, bs, false); err != nil {
		return nil
	}
	if err := w.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(1), *genBlockHash(1)}); err != nil {
		return err
	}

	blk := wtxmgr.BlockMeta{wtxmgr.Block{Hash: *genBlockHash(2), Height: 2}, time.Now()}

	// Create a simple P2PKH pubkey script spendable by Alice. For simplicity
	// all of Alice's spendable funds will reside in this output.
	satosihPerOutput := int64(btcPerOutput * 1e8)
	walletAddr, err := btcutil.NewAddressPubKey(privKey.PubKey().SerializeCompressed(),
		ActiveNetParams)
	if err != nil {
		return err
	}
	walletScriptCredit, err := txscript.PayToAddrScript(walletAddr.AddressPubKeyHash())
	if err != nil {
		return err
	}

	// Create numOutputs outputs spendable by our wallet each holding btcPerOutput
	// in satoshis.
	tx := wire.NewMsgTx()
	prevOut := wire.NewOutPoint(genBlockHash(999), 1)
	txIn := wire.NewTxIn(prevOut, []byte{txscript.OP_0, txscript.OP_0})
	tx.AddTxIn(txIn)
	for i := 0; i < numOutputs; i++ {
		tx.AddTxOut(wire.NewTxOut(satosihPerOutput, walletScriptCredit))
	}
	txCredit, err := wtxmgr.NewTxRecordFromMsgTx(tx, time.Now())
	if err != nil {
		return err
	}

	if err := addTestTx(w, txCredit, &blk); err != nil {
		return err
	}
	if err := w.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(2), *genBlockHash(2)}); err != nil {
		return err
	}

	// Make the wallet think it's been synced to block 10. This way the
	// outputs we added above will have sufficient confirmations
	// (hard coded to 6 atm).
	for i := 3; i < 10; i++ {
		sha := *genBlockHash(i)
		if err := w.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(i), sha}); err != nil {
			return err
		}
	}

	return nil
}
예제 #6
0
func TestImportPrivateKey(t *testing.T) {
	createHeight := int32(100)
	createdAt := makeBS(createHeight)
	w, err := New(dummyDir, "A wallet for testing.",
		[]byte("banana"), tstNetParams, createdAt)
	if err != nil {
		t.Error("Error creating new wallet: " + err.Error())
		return
	}

	if err = w.Unlock([]byte("banana")); err != nil {
		t.Errorf("Can't unlock original wallet: %v", err)
		return
	}

	pk, err := btcec.NewPrivateKey(btcec.S256())
	if err != nil {
		t.Error("Error generating private key: " + err.Error())
		return
	}

	// verify that the entire wallet's sync height matches the
	// expected createHeight.
	if _, h := w.SyncedTo(); h != createHeight {
		t.Errorf("Initial sync height %v does not match expected %v.", h, createHeight)
		return
	}

	// import priv key
	wif, err := btcutil.NewWIF((*btcec.PrivateKey)(pk), tstNetParams, false)
	if err != nil {
		t.Fatal(err)
	}
	importHeight := int32(50)
	importedAt := makeBS(importHeight)
	address, err := w.ImportPrivateKey(wif, importedAt)
	if err != nil {
		t.Error("importing private key: " + err.Error())
		return
	}

	addr, err := w.Address(address)
	if err != nil {
		t.Error("privkey just imported missing: " + err.Error())
		return
	}
	pka := addr.(PubKeyAddress)

	// lookup address
	pk2, err := pka.PrivKey()
	if err != nil {
		t.Error("error looking up key: " + err.Error())
	}

	if !reflect.DeepEqual(pk, pk2) {
		t.Error("original and looked-up private keys do not match.")
		return
	}

	// verify that the sync height now match the (smaller) import height.
	if _, h := w.SyncedTo(); h != importHeight {
		t.Errorf("After import sync height %v does not match expected %v.", h, importHeight)
		return
	}

	// serialise and deseralise and check still there.

	// Test (de)serialization of wallet.
	buf := new(bytes.Buffer)
	_, err = w.WriteTo(buf)
	if err != nil {
		t.Errorf("Cannot write wallet: %v", err)
		return
	}
	w2 := new(Store)
	_, err = w2.ReadFrom(buf)
	if err != nil {
		t.Errorf("Cannot read wallet: %v", err)
		return
	}

	// Verify that the  sync height match expected after the reserialization.
	if _, h := w2.SyncedTo(); h != importHeight {
		t.Errorf("After reserialization sync height %v does not match expected %v.", h, importHeight)
		return
	}

	// Mark imported address as partially synced with a block somewhere inbetween
	// the import height and the chain height.
	partialHeight := (createHeight-importHeight)/2 + importHeight
	if err := w2.SetSyncStatus(address, PartialSync(partialHeight)); err != nil {
		t.Errorf("Cannot mark address partially synced: %v", err)
		return
	}
	if _, h := w2.SyncedTo(); h != partialHeight {
		t.Errorf("After address partial sync, sync height %v does not match expected %v.", h, partialHeight)
		return
	}

	// Test serialization with the partial sync.
	buf.Reset()
	_, err = w2.WriteTo(buf)
	if err != nil {
		t.Errorf("Cannot write wallet: %v", err)
		return
	}
	w3 := new(Store)
	_, err = w3.ReadFrom(buf)
	if err != nil {
		t.Errorf("Cannot read wallet: %v", err)
		return
	}

	// Test correct partial height after serialization.
	if _, h := w3.SyncedTo(); h != partialHeight {
		t.Errorf("After address partial sync and reserialization, sync height %v does not match expected %v.",
			h, partialHeight)
		return
	}

	// Mark imported address as not synced at all, and verify sync height is now
	// the import height.
	if err := w3.SetSyncStatus(address, Unsynced(0)); err != nil {
		t.Errorf("Cannot mark address synced: %v", err)
		return
	}
	if _, h := w3.SyncedTo(); h != importHeight {
		t.Errorf("After address unsync, sync height %v does not match expected %v.", h, importHeight)
		return
	}

	// Mark imported address as synced with the recently-seen blocks, and verify
	// that the sync height now equals the most recent block (the one at wallet
	// creation).
	if err := w3.SetSyncStatus(address, FullSync{}); err != nil {
		t.Errorf("Cannot mark address synced: %v", err)
		return
	}
	if _, h := w3.SyncedTo(); h != createHeight {
		t.Errorf("After address sync, sync height %v does not match expected %v.", h, createHeight)
		return
	}

	if err = w3.Unlock([]byte("banana")); err != nil {
		t.Errorf("Can't unlock deserialised wallet: %v", err)
		return
	}

	addr3, err := w3.Address(address)
	if err != nil {
		t.Error("privkey in deserialised wallet missing : " +
			err.Error())
		return
	}
	pka3 := addr3.(PubKeyAddress)

	// lookup address
	pk2, err = pka3.PrivKey()
	if err != nil {
		t.Error("error looking up key in deserialized wallet: " + err.Error())
	}

	if !reflect.DeepEqual(pk, pk2) {
		t.Error("original and deserialized private keys do not match.")
		return
	}

}
예제 #7
0
func TestWatchingWalletExport(t *testing.T) {
	createdAt := makeBS(0)
	w, err := New(dummyDir, "A wallet for testing.",
		[]byte("banana"), tstNetParams, createdAt)
	if err != nil {
		t.Error("Error creating new wallet: " + err.Error())
		return
	}

	// Maintain a set of the active addresses in the wallet.
	activeAddrs := make(map[addressKey]struct{})

	// Add root address.
	activeAddrs[getAddressKey(w.LastChainedAddress())] = struct{}{}

	// Create watching wallet from w.
	ww, err := w.ExportWatchingWallet()
	if err != nil {
		t.Errorf("Could not create watching wallet: %v", err)
		return
	}

	// Verify correctness of wallet flags.
	if ww.flags.useEncryption {
		t.Errorf("Watching wallet marked as using encryption (but nothing to encrypt).")
		return
	}
	if !ww.flags.watchingOnly {
		t.Errorf("Wallet should be watching-only but is not marked so.")
		return
	}

	// Verify that all flags are set as expected.
	if ww.keyGenerator.flags.encrypted {
		t.Errorf("Watching root address should not be encrypted (nothing to encrypt)")
		return
	}
	if ww.keyGenerator.flags.hasPrivKey {
		t.Errorf("Watching root address marked as having a private key.")
		return
	}
	if !ww.keyGenerator.flags.hasPubKey {
		t.Errorf("Watching root address marked as missing a public key.")
		return
	}
	if ww.keyGenerator.flags.createPrivKeyNextUnlock {
		t.Errorf("Watching root address marked as needing a private key to be generated later.")
		return
	}
	for apkh, waddr := range ww.addrMap {
		switch addr := waddr.(type) {
		case *btcAddress:
			if addr.flags.encrypted {
				t.Errorf("Chained address should not be encrypted (nothing to encrypt)")
				return
			}
			if addr.flags.hasPrivKey {
				t.Errorf("Chained address marked as having a private key.")
				return
			}
			if !addr.flags.hasPubKey {
				t.Errorf("Chained address marked as missing a public key.")
				return
			}
			if addr.flags.createPrivKeyNextUnlock {
				t.Errorf("Chained address marked as needing a private key to be generated later.")
				return
			}
		case *scriptAddress:
			t.Errorf("Chained address was a script!")
			return
		default:
			t.Errorf("Chained address unknown type!")
			return
		}

		if _, ok := activeAddrs[apkh]; !ok {
			t.Errorf("Address from watching wallet not found in original wallet.")
			return
		}
		delete(activeAddrs, apkh)
	}
	if len(activeAddrs) != 0 {
		t.Errorf("%v address(es) were not exported to watching wallet.", len(activeAddrs))
		return
	}

	// Check that the new addresses created by each wallet match.  The
	// original wallet is unlocked so addresses are chained with privkeys.
	if err := w.Unlock([]byte("banana")); err != nil {
		t.Errorf("Unlocking original wallet failed: %v", err)
	}

	// Test that ExtendActiveAddresses for the watching wallet match
	// manually requested addresses of the original wallet.
	var newAddrs []btcutil.Address
	for i := 0; i < 10; i++ {
		addr, err := w.NextChainedAddress(createdAt)
		if err != nil {
			t.Errorf("Cannot get next chained address for original wallet: %v", err)
			return
		}
		newAddrs = append(newAddrs, addr)
	}
	newWWAddrs, err := ww.ExtendActiveAddresses(10)
	if err != nil {
		t.Errorf("Cannot extend active addresses for watching wallet: %v", err)
		return
	}
	for i := range newAddrs {
		if newAddrs[i].EncodeAddress() != newWWAddrs[i].EncodeAddress() {
			t.Errorf("Extended active addresses do not match manually requested addresses.")
			return
		}
	}

	// Test ExtendActiveAddresses for the original wallet after manually
	// requesting addresses for the watching wallet.
	newWWAddrs = nil
	for i := 0; i < 10; i++ {
		addr, err := ww.NextChainedAddress(createdAt)
		if err != nil {
			t.Errorf("Cannot get next chained address for watching wallet: %v", err)
			return
		}
		newWWAddrs = append(newWWAddrs, addr)
	}
	newAddrs, err = w.ExtendActiveAddresses(10)
	if err != nil {
		t.Errorf("Cannot extend active addresses for original wallet: %v", err)
		return
	}
	for i := range newAddrs {
		if newAddrs[i].EncodeAddress() != newWWAddrs[i].EncodeAddress() {
			t.Errorf("Extended active addresses do not match manually requested addresses.")
			return
		}
	}

	// Test (de)serialization of watching wallet.
	buf := new(bytes.Buffer)
	_, err = ww.WriteTo(buf)
	if err != nil {
		t.Errorf("Cannot write watching wallet: %v", err)
		return
	}
	ww2 := new(Store)
	_, err = ww2.ReadFrom(buf)
	if err != nil {
		t.Errorf("Cannot read watching wallet: %v", err)
		return
	}

	// Check that (de)serialized watching wallet matches the exported wallet.
	if !reflect.DeepEqual(ww, ww2) {
		t.Error("Exported and read-in watching wallets do not match.")
		return
	}

	// Verify that nonsensical functions fail with correct error.
	if err := ww.Lock(); err != ErrWatchingOnly {
		t.Errorf("Nonsensical func Lock returned no or incorrect error: %v", err)
		return
	}
	if err := ww.Unlock([]byte("banana")); err != ErrWatchingOnly {
		t.Errorf("Nonsensical func Unlock returned no or incorrect error: %v", err)
		return
	}
	generator, err := ww.Address(w.keyGenerator.Address())
	if err != nil {
		t.Errorf("generator isnt' present in wallet")
	}
	gpk := generator.(PubKeyAddress)
	if _, err := gpk.PrivKey(); err != ErrWatchingOnly {
		t.Errorf("Nonsensical func AddressKey returned no or incorrect error: %v", err)
		return
	}
	if _, err := ww.ExportWatchingWallet(); err != ErrWatchingOnly {
		t.Errorf("Nonsensical func ExportWatchingWallet returned no or incorrect error: %v", err)
		return
	}
	pk, _ := btcec.PrivKeyFromBytes(btcec.S256(), make([]byte, 32))
	wif, err := btcutil.NewWIF(pk, tstNetParams, true)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := ww.ImportPrivateKey(wif, createdAt); err != ErrWatchingOnly {
		t.Errorf("Nonsensical func ImportPrivateKey returned no or incorrect error: %v", err)
		return
	}
}
예제 #8
0
func (w *LibbitcoinWallet) Spend(amount int64, addr btc.Address, feeLevel bitcoin.FeeLevel) error {
	// Check for dust
	script, _ := txscript.PayToAddrScript(addr)
	if txrules.IsDustAmount(btc.Amount(amount), len(script), txrules.DefaultRelayFeePerKb) {
		return errors.New("Amount is below dust threshold")
	}

	var additionalPrevScripts map[wire.OutPoint][]byte
	var additionalKeysByAddress map[string]*btc.WIF

	// Create input source
	coinMap := w.gatherCoins()
	coins := make([]coinset.Coin, 0, len(coinMap))
	for k := range coinMap {
		coins = append(coins, k)
	}
	inputSource := func(target btc.Amount) (total btc.Amount, inputs []*wire.TxIn, scripts [][]byte, err error) {
		// TODO: maybe change the coin selection algorithm? We're using min coins right now because
		// TODO: we don't know the number of confirmations on each coin without querying the libbitcoin server.
		coinSelector := coinset.MinNumberCoinSelector{MaxInputs: 10000, MinChangeAmount: btc.Amount(10000)}
		coins, err := coinSelector.CoinSelect(target, coins)
		if err != nil {
			return total, inputs, scripts, errors.New("insuffient funds")
		}
		additionalPrevScripts = make(map[wire.OutPoint][]byte)
		additionalKeysByAddress = make(map[string]*btc.WIF)
		for _, c := range coins.Coins() {
			total += c.Value()
			outpoint := wire.NewOutPoint(c.Hash(), c.Index())
			in := wire.NewTxIn(outpoint, []byte{})
			in.Sequence = 0 // Opt-in RBF so we can bump fees
			inputs = append(inputs, in)
			additionalPrevScripts[*outpoint] = c.PkScript()
			key := coinMap[c]
			addr, _ := btc.NewAddressPubKey(key.PublicKey().Key, w.params)
			pk, _ := btcec.PrivKeyFromBytes(btcec.S256(), key.Key)
			wif, _ := btc.NewWIF(pk, w.params, true)
			additionalKeysByAddress[addr.AddressPubKeyHash().EncodeAddress()] = wif
		}
		return total, inputs, scripts, nil
	}

	// Get the fee per kilobyte
	feePerKB := int64(w.getFeePerByte(feeLevel)) * 1000

	// outputs
	out := wire.NewTxOut(amount, script)

	// Create change source
	changeSource := func() ([]byte, error) {
		addr := w.GetCurrentAddress(bitcoin.CHANGE)
		script, err := txscript.PayToAddrScript(addr)
		if err != nil {
			return []byte{}, err
		}
		return script, nil
	}

	authoredTx, err := txauthor.NewUnsignedTransaction([]*wire.TxOut{out}, btc.Amount(feePerKB), inputSource, changeSource)
	if err != nil {
		return err
	}

	// BIP 69 sorting
	txsort.InPlaceSort(authoredTx.Tx)

	// Sign tx
	getKey := txscript.KeyClosure(func(addr btc.Address) (
		*btcec.PrivateKey, bool, error) {
		addrStr := addr.EncodeAddress()
		wif := additionalKeysByAddress[addrStr]
		return wif.PrivKey, wif.CompressPubKey, nil
	})
	getScript := txscript.ScriptClosure(func(
		addr btc.Address) ([]byte, error) {
		return []byte{}, nil
	})
	for i, txIn := range authoredTx.Tx.TxIn {
		prevOutScript := additionalPrevScripts[txIn.PreviousOutPoint]
		script, err := txscript.SignTxOutput(w.params,
			authoredTx.Tx, i, prevOutScript, txscript.SigHashAll, getKey,
			getScript, txIn.SignatureScript)
		if err != nil {
			return errors.New("Failed to sign transaction")
		}
		txIn.SignatureScript = script
	}

	// Broadcast tx to bitcoin network
	serializedTx := new(bytes.Buffer)
	authoredTx.Tx.Serialize(serializedTx)
	w.Client.Broadcast(serializedTx.Bytes(), func(i interface{}, err error) {
		if err == nil {
			log.Infof("Broadcast tx %s to bitcoin network\n", authoredTx.Tx.TxSha().String())
		} else {
			log.Errorf("Failed to broadcast tx, reason: %s\n", err)
		}
	})

	// Update the db
	w.ProcessTransaction(btc.NewTx(authoredTx.Tx), 0)

	return nil
}