// Uncompressed private key
func sec2b58unc(pk []byte) string {
var dat [37]byte
dat[0] = privver
copy(dat[1:33], pk)
sh := btc.Sha2Sum(dat[0:33])
copy(dat[33:37], sh[:4])
return btc.Encodeb58(dat[:])
}
// Compressed private key
func sec2b58com(pk []byte) string {
var dat [38]byte
dat[0] = privver
copy(dat[1:33], pk)
dat[33] = 1 // compressed
sh := btc.Sha2Sum(dat[0:34])
copy(dat[34:38], sh[:4])
return btc.Encodeb58(dat[:])
}
// Get the secret seed and generate "*keycnt" key pairs (both private and public)
func make_wallet() {
var verbyte byte // normally it will be zero (means: normal bitcoin network)
if *testnet {
verbyte = 0x6f // .. but for testnet we need 0x6f
}
pass := getpass()
curv := btc.S256()
seed_key := btc.Sha2Sum([]byte(pass))
priv_keys = make([][32]byte, *keycnt)
publ_addrs = make([]*btc.BtcAddr, *keycnt)
fmt.Println("Generating", *keycnt, "keys, version", verbyte, "...")
for i := uint(0); i < *keycnt; i++ {
seed_key = btc.Sha2Sum(seed_key[:])
priv_keys[i] = seed_key
publ_addrs[i] = btc.NewAddrFromPubkey(getPubKey(curv, seed_key[:]), verbyte)
}
fmt.Println("Private keys re-generated")
}
func (c *oneConnection) FetchMessage() *BCmsg {
var e error
var n int
// Try for 1 millisecond and timeout if full msg not received
c.TCPConn.SetReadDeadline(time.Now().Add(time.Millisecond))
for c.hdr_len < 24 {
n, e = SockRead(c.TCPConn, c.hdr[c.hdr_len:24])
c.hdr_len += n
if e != nil {
c.HandleError(e)
return nil
}
if c.hdr_len >= 4 && !bytes.Equal(c.hdr[:4], Magic[:]) {
println("FetchMessage: Proto out of sync")
c.broken = true
return nil
}
}
dlen := binary.LittleEndian.Uint32(c.hdr[16:20])
if dlen > 0 {
if c.dat == nil {
c.dat = make([]byte, dlen)
c.datlen = 0
}
for c.datlen < dlen {
n, e = SockRead(c.TCPConn, c.dat[c.datlen:])
c.datlen += uint32(n)
if e != nil {
c.HandleError(e)
return nil
}
}
}
sh := btc.Sha2Sum(c.dat)
if !bytes.Equal(c.hdr[20:24], sh[:4]) {
println("Msg checksum error")
c.hdr_len = 0
c.dat = nil
c.broken = true
return nil
}
ret := new(BCmsg)
ret.cmd = strings.TrimRight(string(c.hdr[4:16]), "\000")
ret.pl = c.dat
c.dat = nil
c.hdr_len = 0
c.BytesReceived += uint64(24 + len(ret.pl))
return ret
}
func (c *one_net_conn) readmsg() *one_net_cmd {
var (
hdr [24]byte
hdr_len int
pl_len uint32 // length taken from the message header
cmd string
dat []byte
datlen uint32
)
for hdr_len < 24 {
n, e := c.Read(hdr[hdr_len:])
if e != nil {
return nil
}
hdr_len += n
if hdr_len >= 4 && !bytes.Equal(hdr[:4], Magic[:]) {
println(c.peerip, "NetBadMagic")
return nil
}
}
pl_len = binary.LittleEndian.Uint32(hdr[16:20])
cmd = strings.TrimRight(string(hdr[4:16]), "\000")
if pl_len > 0 {
dat = make([]byte, pl_len)
for datlen < pl_len {
n, e := c.Read(dat[datlen:])
if e != nil {
return nil
}
if n > 0 {
datlen += uint32(n)
}
}
}
sh := btc.Sha2Sum(dat)
if !bytes.Equal(hdr[20:24], sh[:4]) {
println(c.peerip, "Msg checksum error")
return nil
}
res := new(one_net_cmd)
res.cmd = cmd
res.pl = dat
return res
}
func (c *one_net_conn) sendmsg(cmd string, pl []byte) (e error) {
sbuf := make([]byte, 24+len(pl))
binary.LittleEndian.PutUint32(sbuf[0:4], Version)
copy(sbuf[0:4], Magic[:])
copy(sbuf[4:16], cmd)
binary.LittleEndian.PutUint32(sbuf[16:20], uint32(len(pl)))
sh := btc.Sha2Sum(pl[:])
copy(sbuf[20:24], sh[:4])
copy(sbuf[24:], pl)
//println("send", cmd, len(sbuf), "...")
c.send.buf = append(c.send.buf, sbuf...)
return
}
func (c *oneConnection) SendRawMsg(cmd string, pl []byte) (e error) {
var b [20]byte
c.last_cmd = cmd + "*"
c.writing = true
binary.LittleEndian.PutUint32(b[0:4], Version)
copy(b[0:4], Magic[:])
copy(b[4:16], cmd)
binary.LittleEndian.PutUint32(b[16:20], uint32(len(pl)))
e = SockWrite(c.TCPConn, b[:20])
if e != nil {
if dbg > 0 {
println("SendRawMsg 1", e.Error())
}
c.broken = true
c.writing = false
return
}
sh := btc.Sha2Sum(pl[:])
e = SockWrite(c.TCPConn, sh[:4])
if e != nil {
if dbg > 0 {
println("SendRawMsg 2", e.Error())
}
c.broken = true
c.writing = false
return
}
e = SockWrite(c.TCPConn, pl[:])
if e != nil {
if dbg > 0 {
println("SendRawMsg 3", e.Error())
}
c.broken = true
}
c.BytesSent += uint64(24 + len(pl))
c.last_cmd = cmd
c.writing = false
return
}
func (c *OneConnection) SendRawMsg(cmd string, pl []byte) (e error) {
c.Mutex.Lock()
if c.Send.Buf != nil {
// Before adding more data to the buffer, check the limit
if len(c.Send.Buf) > MaxSendBufferSize {
c.Mutex.Unlock()
if common.DebugLevel > 0 {
println(c.PeerAddr.Ip(), "Peer Send Buffer Overflow")
}
c.Disconnect()
common.CountSafe("PeerSendOverflow")
return errors.New("Send buffer overflow")
}
} else {
c.Send.LastSent = time.Now()
}
common.CountSafe("sent_" + cmd)
common.CountSafeAdd("sbts_"+cmd, uint64(len(pl)))
sbuf := make([]byte, 24+len(pl))
c.LastCmdSent = cmd
c.LastBtsSent = uint32(len(pl))
binary.LittleEndian.PutUint32(sbuf[0:4], common.Version)
copy(sbuf[0:4], common.Magic[:])
copy(sbuf[4:16], cmd)
binary.LittleEndian.PutUint32(sbuf[16:20], uint32(len(pl)))
sh := btc.Sha2Sum(pl[:])
copy(sbuf[20:24], sh[:4])
copy(sbuf[24:], pl)
c.Send.Buf = append(c.Send.Buf, sbuf...)
if common.DebugLevel < 0 {
fmt.Println(cmd, len(c.Send.Buf), "->", c.PeerAddr.Ip())
}
c.Mutex.Unlock()
//println(len(c.Send.Buf), "queued for seding to", c.PeerAddr.Ip())
return
}
// Verify the secret key's range and al if a test message signed with it verifies OK
func verify_key(priv []byte, publ []byte) bool {
const TestMessage = "Just some test message..."
hash := btc.Sha2Sum([]byte(TestMessage))
pub_key, e := btc.NewPublicKey(publ)
if e != nil {
println("NewPublicKey:", e.Error(), "\007")
os.Exit(1)
}
var key ecdsa.PrivateKey
key.D = new(big.Int).SetBytes(priv)
key.PublicKey = pub_key.PublicKey
if key.D.Cmp(big.NewInt(0)) == 0 {
println("pubkey value is zero")
return false
}
if key.D.Cmp(maxKeyVal) != -1 {
println("pubkey value is too big", hex.EncodeToString(publ))
return false
}
r, s, err := ecdsa.Sign(rand.Reader, &key, hash[:])
if err != nil {
println("ecdsa.Sign:", err.Error())
return false
}
ok := ecdsa.Verify(&key.PublicKey, hash[:], r, s)
if !ok {
println("The key pair does not verify!")
return false
}
return true
}
// load the content of the "balance/" folder
func load_balance() {
var unknownInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
os.Exit(1)
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
uo := UO(uns)
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
totBtc += UO(uns).Value
fnd = true
break
}
}
if !fnd {
unknownInputs++
if *verbose {
fmt.Println(uns.String(), "does not belogn to your wallet - ignore it")
}
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs\n", float64(totBtc)/1e8, len(unspentOuts))
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent (-v to print them)\n", unknownInputs)
}
}
func (c *OneConnection) FetchMessage() *BCmsg {
var e error
var n int
for c.recv.hdr_len < 24 {
n, e = common.SockRead(c.NetConn, c.recv.hdr[c.recv.hdr_len:24])
c.Mutex.Lock()
c.recv.hdr_len += n
if e != nil {
c.Mutex.Unlock()
c.HandleError(e)
return nil
}
if c.recv.hdr_len >= 4 && !bytes.Equal(c.recv.hdr[:4], common.Magic[:]) {
c.Mutex.Unlock()
if common.DebugLevel > 0 {
println("FetchMessage: Proto out of sync")
}
common.CountSafe("NetBadMagic")
c.Disconnect()
return nil
}
if c.broken {
c.Mutex.Unlock()
return nil
}
if c.recv.hdr_len >= 24 {
c.recv.pl_len = binary.LittleEndian.Uint32(c.recv.hdr[16:20])
c.recv.cmd = strings.TrimRight(string(c.recv.hdr[4:16]), "\000")
}
c.Mutex.Unlock()
}
if c.recv.pl_len > 0 {
if c.recv.dat == nil {
msi := maxmsgsize(c.recv.cmd)
if c.recv.pl_len > msi {
//println(c.PeerAddr.Ip(), "Command", c.recv.cmd, "is going to be too big", c.recv.pl_len, msi)
c.DoS("MsgTooBig")
return nil
}
c.Mutex.Lock()
c.recv.dat = make([]byte, c.recv.pl_len)
c.recv.datlen = 0
c.Mutex.Unlock()
}
for c.recv.datlen < c.recv.pl_len {
n, e = common.SockRead(c.NetConn, c.recv.dat[c.recv.datlen:])
if n > 0 {
c.Mutex.Lock()
c.recv.datlen += uint32(n)
c.Mutex.Unlock()
if c.recv.datlen > c.recv.pl_len {
println(c.PeerAddr.Ip(), "is sending more of", c.recv.cmd, "then it should have", c.recv.datlen, c.recv.pl_len)
c.DoS("MsgSizeMismatch")
return nil
}
}
if e != nil {
c.HandleError(e)
return nil
}
if c.broken {
return nil
}
}
}
sh := btc.Sha2Sum(c.recv.dat)
if !bytes.Equal(c.recv.hdr[20:24], sh[:4]) {
//println(c.PeerAddr.Ip(), "Msg checksum error")
c.DoS("MsgBadChksum")
return nil
}
ret := new(BCmsg)
ret.cmd = c.recv.cmd
ret.pl = c.recv.dat
c.Mutex.Lock()
c.recv.dat = nil
c.recv.hdr_len = 0
c.BytesReceived += uint64(24 + len(ret.pl))
c.Mutex.Unlock()
return ret
}
func (c *one_net_conn) readmsg() *one_net_cmd {
c.SetReadDeadline(time.Now().Add(10 * time.Millisecond))
if c.recv.hdr_len < 24 {
for {
n, e := c.Read(c.recv.hdr[c.recv.hdr_len:])
if e != nil {
if nerr, ok := e.(net.Error); ok && nerr.Timeout() {
//COUNTER("HDRT")
} else {
c.setbroken(true)
}
return nil
}
c.Lock()
c.bytes_received += uint64(n)
c.Unlock()
c.recv.hdr_len += n
if c.recv.hdr_len >= 4 {
if !bytes.Equal(c.recv.hdr[:4], Magic[:]) {
fmt.Println(c.peerip, "NetBadMagic")
c.setbroken(true)
return nil
}
if c.recv.hdr_len == 24 {
c.recv.cmd = strings.TrimRight(string(c.recv.hdr[4:16]), "\000")
c.recv.pl_len = binary.LittleEndian.Uint32(c.recv.hdr[16:20])
c.recv.datlen = 0
if c.recv.pl_len > 0 {
c.recv.dat = make([]byte, c.recv.pl_len)
}
break
}
}
}
}
for c.recv.datlen < c.recv.pl_len {
n, e := c.Read(c.recv.dat[c.recv.datlen:])
if e != nil {
if nerr, ok := e.(net.Error); ok && nerr.Timeout() {
//COUNTER("HDRT")
} else {
c.setbroken(true)
}
return nil
}
if n > 0 {
c.recv.datlen += uint32(n)
c.Lock()
c.bytes_received += uint64(n)
c.Unlock()
}
}
sh := btc.Sha2Sum(c.recv.dat)
if !bytes.Equal(c.recv.hdr[20:24], sh[:4]) {
fmt.Println(c.peerip, "Msg checksum error")
c.setbroken(true)
return nil
}
res := new(one_net_cmd)
res.cmd = c.recv.cmd
res.pl = c.recv.dat
c.recv.hdr_len = 0
c.recv.dat = nil
return res
}
func load_others() {
f, e := os.Open(RawKeysFilename)
if e == nil {
defer f.Close()
td := bufio.NewReader(f)
for {
li, _, _ := td.ReadLine()
if li == nil {
break
}
pk := strings.SplitN(strings.Trim(string(li), " "), " ", 2)
if pk[0][0] == '#' {
continue // Just a comment-line
}
pkb := btc.Decodeb58(pk[0])
if pkb == nil {
println("Decodeb58 failed:", pk[0][:6])
continue
}
if len(pkb) != 37 && len(pkb) != 38 {
println(pk[0][:6], "has wrong key", len(pkb))
println(hex.EncodeToString(pkb))
continue
}
if pkb[0] != privver {
println(pk[0][:6], "has version", pkb[0], "while we expect", privver)
if pkb[0] == 0xef {
fmt.Println("You probably meant testnet, so use -t switch")
os.Exit(0)
} else {
continue
}
}
var sh [32]byte
var compr bool
if len(pkb) == 37 {
// compressed key
sh = btc.Sha2Sum(pkb[0:33])
if !bytes.Equal(sh[:4], pkb[33:37]) {
println(pk[0][:6], "checksum error")
continue
}
compr = false
} else {
if pkb[33] != 1 {
println(pk[0][:6], "a key of length 38 bytes must be compressed")
continue
}
sh = btc.Sha2Sum(pkb[0:34])
if !bytes.Equal(sh[:4], pkb[34:38]) {
println(pk[0][:6], "checksum error")
continue
}
compr = true
}
key := pkb[1:33]
pub, er := btc.PublicFromPrivate(key, compr)
if er != nil {
println("PublicFromPrivate:", e.Error())
os.Exit(1)
}
priv_keys = append(priv_keys, key)
publ_addrs = append(publ_addrs, btc.NewAddrFromPubkey(pub, verbyte))
if len(pk) > 1 {
labels = append(labels, pk[1])
} else {
labels = append(labels, fmt.Sprint("Other ", len(priv_keys)))
}
}
if *verbose {
fmt.Println(len(priv_keys), "keys imported from", RawKeysFilename)
}
} else {
if *verbose {
fmt.Println("You can also have some dumped (b58 encoded) priv keys in file", RawKeysFilename)
}
}
}
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
var unknownInputs, multisigInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
return
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
// Sum up all the balance and check if we have private key for this input
uo := UO(uns)
totBtc += UO(uns).Value
if !btc.IsP2SH(uo.Pk_script) {
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
fnd = true
break
}
}
if showbalance && !fnd {
unknownInputs++
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
}
}
} else {
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "belongs to a multisig address")
}
multisigInputs++
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
if showbalance {
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
}
}
}
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
var unknownInputs, multisigInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
return
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
str := string(l)
if sti := strings.Index(str, "_StealthC:"); sti != -1 {
c, e := hex.DecodeString(str[sti+10 : sti+10+64])
if e != nil {
fmt.Println("ERROR at stealth", txid.String(), vout, e.Error())
} else {
// add a new key to the wallet
sec := btc.DeriveNextPrivate(first_seed[:], c)
is_stealth[len(priv_keys)] = true
priv_keys = append(priv_keys, sec)
labels = append(labels, lab)
pub_key := btc.PublicFromPrivate(sec, true)
publ_addrs = append(publ_addrs, btc.NewAddrFromPubkey(pub_key, btc.AddrVerPubkey(*testnet)))
compressed_key = append(compressed_key, true) // stealth keys are always compressed
}
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
// Sum up all the balance and check if we have private key for this input
uo := UO(uns)
add_it := true
if !btc.IsP2SH(uo.Pk_script) {
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
fnd = true
break
}
}
if !fnd {
if *onlvalid {
add_it = false
}
if showbalance {
unknownInputs++
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
}
}
}
} else {
if *onlvalid {
add_it = false
}
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "belongs to a multisig address")
}
multisigInputs++
}
if add_it {
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
totBtc += UO(uns).Value
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
if showbalance {
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
}
}
}