Exemplo n.º 1
0
Arquivo: stuff.go Projeto: wchh/gocoin
// Get tx with given id from the balance folder, of from cache
func tx_from_balance(txid *btc.Uint256, error_is_fatal bool) (tx *btc.Tx) {
	if tx = loadedTxs[txid.Hash]; tx != nil {
		return // we have it in cache already
	}
	fn := "balance/" + txid.String() + ".tx"
	buf, er := ioutil.ReadFile(fn)
	if er == nil && buf != nil {
		var th [32]byte
		btc.ShaHash(buf, th[:])
		if txid.Hash == th {
			tx, _ = btc.NewTx(buf)
			if error_is_fatal && tx == nil {
				println("Transaction is corrupt:", txid.String())
				cleanExit(1)
			}
		} else if error_is_fatal {
			println("Transaction file is corrupt:", txid.String())
			cleanExit(1)
		}
	} else if error_is_fatal {
		println("Error reading transaction file:", fn)
		if er != nil {
			println(er.Error())
		}
		cleanExit(1)
	}
	loadedTxs[txid.Hash] = tx // store it in the cache
	return
}
Exemplo n.º 2
0
Arquivo: ltc.go Projeto: wchh/gocoin
// LTC signing uses different seed string
func HashFromMessage(msg []byte, out []byte) {
	const MessageMagic = "Litecoin Signed Message:\n"
	b := new(bytes.Buffer)
	btc.WriteVlen(b, uint64(len(MessageMagic)))
	b.Write([]byte(MessageMagic))
	btc.WriteVlen(b, uint64(len(msg)))
	b.Write(msg)
	btc.ShaHash(b.Bytes(), out)
}
Exemplo n.º 3
0
func arm_stealth(p string) {
	var buf, b2 [256]byte

	create := p != ""

	fmt.Print("Enter seed password of the stealth key (empty line to abort) : ")
	le := sys.ReadPassword(buf[:])
	if le <= 0 {
		fmt.Println("Aborted")
		return
	}
	if create {
		fmt.Print("Re-enter the seed password : "******"The passwords you entered do not match")
			return
		}
	}

	nw := make([]byte, 32)
	btc.ShaHash(buf[:le], nw) // seed
	sys.ClearBuffer(buf[:le])
	btc.ShaHash(nw, nw) // 1st key
	wallet.ArmedStealthSecrets = append(wallet.ArmedStealthSecrets, nw)
	if create {
		fmt.Println("You have created a new stealth scan-key. Make sure to not forget this password!")
		pk := btc.PublicFromPrivate(nw, true)
		fmt.Println("Public hexdump:", hex.EncodeToString(pk))
		fmt.Println(" Go to your wallet machine and execute:")
		fmt.Println("   wallet -scankey", hex.EncodeToString(pk), "-prefix 0")
		fmt.Println("   (change the prefix to a different value if you want)")
	}
	fmt.Println("Stealth key number", len(wallet.ArmedStealthSecrets)-1, "has been stored in memory")
	fmt.Println("Reloading the current wallet...")
	usif.ExecUiReq(&usif.OneUiReq{Handler: func(p string) {
		wallet.LoadWallet(wallet.MyWallet.FileName)
	}})
	show_prompt = false
}
Exemplo n.º 4
0
// Get the secret seed and generate "keycnt" key pairs (both private and public)
func make_wallet() {
	var lab string

	load_others()

	var seed_key []byte
	var hdwal *btc.HDWallet

	defer func() {
		sys.ClearBuffer(seed_key)
		if hdwal != nil {
			sys.ClearBuffer(hdwal.Key)
			sys.ClearBuffer(hdwal.ChCode)
		}
	}()

	pass := getpass()
	if pass == nil {
		cleanExit(0)
	}

	if waltype >= 1 && waltype <= 3 {
		seed_key = make([]byte, 32)
		btc.ShaHash(pass, seed_key)
		sys.ClearBuffer(pass)
		lab = fmt.Sprintf("Typ%c", 'A'+waltype-1)
		if waltype == 1 {
			println("WARNING: Wallet Type 1 is obsolete")
		} else if waltype == 2 {
			if type2sec != "" {
				d, e := hex.DecodeString(type2sec)
				if e != nil {
					println("t2sec error:", e.Error())
					cleanExit(1)
				}
				type2_secret = d
			} else {
				type2_secret = make([]byte, 20)
				btc.RimpHash(seed_key, type2_secret)
			}
		}
	} else if waltype == 4 {
		lab = "TypHD"
		hdwal = btc.MasterKey(pass, testnet)
		sys.ClearBuffer(pass)
	} else {
		sys.ClearBuffer(pass)
		println("ERROR: Unsupported wallet type", waltype)
		cleanExit(1)
	}

	if *verbose {
		fmt.Println("Generating", keycnt, "keys, version", ver_pubkey(), "...")
	}

	first_determ_idx = len(keys)
	for i := uint(0); i < keycnt; {
		prv_key := make([]byte, 32)
		if waltype == 3 {
			btc.ShaHash(seed_key, prv_key)
			seed_key = append(seed_key, byte(i))
		} else if waltype == 2 {
			seed_key = btc.DeriveNextPrivate(seed_key, type2_secret)
			copy(prv_key, seed_key)
		} else if waltype == 1 {
			btc.ShaHash(seed_key, prv_key)
			copy(seed_key, prv_key)
		} else /*if waltype==4*/ {
			// HD wallet
			_hd := hdwal.Child(uint32(0x80000000 | i))
			copy(prv_key, _hd.Key[1:])
			sys.ClearBuffer(_hd.Key)
			sys.ClearBuffer(_hd.ChCode)
		}
		if *scankey != "" {
			new_stealth_address(prv_key)
			return
		}

		rec := btc.NewPrivateAddr(prv_key, ver_secret(), !uncompressed)

		if *pubkey != "" && *pubkey == rec.BtcAddr.String() {
			fmt.Println("Public address:", rec.BtcAddr.String())
			fmt.Println("Public hexdump:", hex.EncodeToString(rec.BtcAddr.Pubkey))
			return
		}

		rec.BtcAddr.Extra.Label = fmt.Sprint(lab, " ", i+1)
		keys = append(keys, rec)
		i++
	}
	if *verbose {
		fmt.Println("Private keys re-generated")
	}
}