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pset_test.go
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package pset
import (
"bytes"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"testing"
"time"
"github.com/btcsuite/btcd/btcec/v2"
"github.com/btcsuite/btcd/btcec/v2/ecdsa"
"github.com/btcsuite/btcd/txscript"
"github.com/stretchr/testify/assert"
"github.com/vulpemventures/go-elements/confidential"
"github.com/vulpemventures/go-elements/elementsutil"
"github.com/vulpemventures/go-elements/network"
"github.com/vulpemventures/go-elements/payment"
"github.com/vulpemventures/go-elements/transaction"
)
var lbtc = append(
[]byte{0x01},
elementsutil.ReverseBytes(h2b(network.Regtest.AssetID))...,
)
func TestRoundTrip(t *testing.T) {
tests := struct {
base64 []string
hex []string
}{
[]string{
"cHNldP8BAOoCAAAAAAGA5RCreFagpc3t/LtM7IaVNJsxhUECqpKZTyY+NPBknQAAAAAA/////wMBJbJRBw4pyhkEPPM8zXMk4t2rA+zErgted8T8Dlz2yVoBAAAAAAL68IAAGXapFDk5cIC1HvIsWb10aa+s/77sDaEuiKwBJbJRBw4pyhkEPPM8zXMk4t2rA+zErgted8T8Dlz2yVoBAAAAAAL67PwAGXapFGWb7bXT08erEtf4UyPDobbAYO++iKwBJbJRBw4pyhkEPPM8zXMk4t2rA+zErgted8T8Dlz2yVoBAAAAAAAAAfQAAAAAAAAAAAAAAA==",
"cHNldP8BAP0TAQIAAAAAAudkFztdrMhMWO7vFlBwP5VPD3a1wWIqQW5hZLCiFUBAAQAAAAD/////OO9qlyJ3LlMjldgpP0NjjGtHhmWusLRh/JkpzKznJSgBAAAAAP////8DASWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaAQAAAAAHJw4AABl2qRQ5OXCAtR7yLFm9dGmvrP++7A2hLoisASWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaAQAAAAAExLGoABl2qRRQpBARXwp9iplHLkfRko/4CGlIyIisASWyUQcOKcoZBDzzPM1zJOLdqwPsxK4LXnfE/A5c9slaAQAAAAAAAAJYAAAAAAAAAAAAAAAA",
"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",
"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",
"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",
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},
}
for _, str := range tests.base64 {
p, err := NewPsetFromBase64(str)
if err != nil {
t.Fatal(err)
}
res, err := p.ToBase64()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, str, res)
}
for _, str := range tests.hex {
p, err := NewPsetFromHex(str)
if err != nil {
t.Fatal(err)
}
res, err := p.ToHex()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, str, res)
}
}
func TestBroadcastBlindedSwapTx(t *testing.T) {
/**
* This test attempts to broadcast a confidential swap transaction
* composed by 2 P2WPKH confidential input and 3 confidential outputs. The
* outputs will be a confidential p2wpkh for both the asset, the
* L-BTC, and another confidential p2wpkh for the change. A 4th
* unblinded output is for the fees, with empty script.
**/
// Generating Alices Keys and Address
privatekeyAlice, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
blindPrivkeyAlice, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkeyAlice := privatekeyAlice.PubKey()
blindPubkeyAlice := blindPrivkeyAlice.PubKey()
p2wpkhAlice := payment.FromPublicKey(pubkeyAlice, &network.Regtest, blindPubkeyAlice)
addressAlice, _ := p2wpkhAlice.ConfidentialWitnessPubKeyHash()
// Generating Bobs Keys and Address
privkeyBob, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
blindPrivkeyBob, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkeyBob := privkeyBob.PubKey()
blindPubkeyBob := blindPrivkeyBob.PubKey()
p2wpkhBob := payment.FromPublicKey(pubkeyBob, &network.Regtest, blindPubkeyBob)
addressBob, _ := p2wpkhBob.ConfidentialWitnessPubKeyHash()
// Fund Alice address with LBTC.
if _, err := faucet(addressAlice); err != nil {
t.Fatal(err)
}
// Fund Bob address with an asset.
_, mintedAsset, err := mint(addressBob, 1000, "VULPEM", "VLP")
if err != nil {
t.Fatal(err)
}
time.Sleep(2 * time.Second)
// Retrieve Alice utxos.
utxosAlice, err := unspents(addressAlice)
if err != nil {
t.Fatal(err)
}
// Retrieve Bob utxos.
utxosBob, err := unspents(addressBob)
if err != nil {
t.Fatal(err)
}
// The transaction will have 2 input and 3 outputs.
// Input From Alice
txInputHashAlice := elementsutil.ReverseBytes(h2b(utxosAlice[0]["txid"].(string)))
txInputIndexAlice := uint32(utxosAlice[0]["vout"].(float64))
txInputAlice := transaction.NewTxInput(txInputHashAlice, txInputIndexAlice)
// Input From Bob
txInputHashBob := elementsutil.ReverseBytes(h2b(utxosBob[0]["txid"].(string)))
txInputIndexBob := uint32(utxosBob[0]["vout"].(float64))
txInputBob := transaction.NewTxInput(txInputHashBob, txInputIndexBob)
//// Outputs from Alice
// LBTC to Bob
aliceToBobValue, _ := elementsutil.ValueToBytes(60000000)
aliceToBobScript := p2wpkhBob.WitnessScript
aliceToBobOutput := transaction.NewTxOutput(lbtc, aliceToBobValue, aliceToBobScript)
// Change from/to Alice
changeScriptAlice := p2wpkhAlice.WitnessScript
changeValueAlice, _ := elementsutil.ValueToBytes(39999500)
changeOutputAlice := transaction.NewTxOutput(lbtc, changeValueAlice[:], changeScriptAlice)
// Asset hex
asset := append([]byte{0x01}, elementsutil.ReverseBytes(h2b(mintedAsset))...)
//// Outputs from Bob
// Asset to Alice
bobToAliceValue, _ := elementsutil.ValueToBytes(100000000000)
bobToAliceScript := p2wpkhAlice.WitnessScript
bobToAliceOutput := transaction.NewTxOutput(asset, bobToAliceValue, bobToAliceScript)
// Create a new pset with all the outputs that need to be blinded first
inputs := []*transaction.TxInput{txInputAlice, txInputBob}
outputs := []*transaction.TxOutput{aliceToBobOutput, changeOutputAlice, bobToAliceOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxos to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
prevTxHexAlice, err := fetchTx(utxosAlice[0]["txid"].(string))
if err != nil {
t.Fatal(err)
}
prevTxAlice, _ := transaction.NewTxFromHex(prevTxHexAlice)
assetCommitmentAlice := h2b(utxosAlice[0]["assetcommitment"].(string))
valueCommitmentAlice := h2b(utxosAlice[0]["valuecommitment"].(string))
witnessUtxoAlice := &transaction.TxOutput{
Asset: assetCommitmentAlice,
Value: valueCommitmentAlice,
Script: p2wpkhAlice.WitnessScript,
Nonce: prevTxAlice.Outputs[txInputIndexAlice].Nonce,
RangeProof: prevTxAlice.Outputs[txInputIndexAlice].RangeProof,
SurjectionProof: prevTxAlice.Outputs[txInputIndexAlice].SurjectionProof,
}
if err := updater.AddInWitnessUtxo(witnessUtxoAlice, 0); err != nil {
t.Fatal(err)
}
prevTxHexBob, err := fetchTx(utxosBob[0]["txid"].(string))
if err != nil {
t.Fatal(err)
}
prevTxBob, _ := transaction.NewTxFromHex(prevTxHexBob)
assetCommitmentBob := h2b(utxosBob[0]["assetcommitment"].(string))
valueCommitmentBob := h2b(utxosBob[0]["valuecommitment"].(string))
witnessUtxoBob := &transaction.TxOutput{
Asset: assetCommitmentBob,
Value: valueCommitmentBob,
Script: p2wpkhBob.WitnessScript,
Nonce: prevTxBob.Outputs[txInputIndexBob].Nonce,
RangeProof: prevTxBob.Outputs[txInputIndexBob].RangeProof,
SurjectionProof: prevTxBob.Outputs[txInputIndexBob].SurjectionProof,
}
if err := updater.AddInWitnessUtxo(witnessUtxoBob, 1); err != nil {
t.Fatal(err)
}
inBlindingPrvKeys := [][]byte{
blindPrivkeyAlice.Serialize(),
blindPrivkeyBob.Serialize(),
}
outBlindingPrvKeys := [][]byte{
blindPrivkeyBob.Serialize(),
blindPrivkeyAlice.Serialize(),
blindPrivkeyAlice.Serialize(),
}
if err := blindTransaction(
p,
inBlindingPrvKeys,
outBlindingPrvKeys,
nil,
); err != nil {
t.Fatal(err)
}
addFeesToTransaction(p, 500)
prvKeys := []*btcec.PrivateKey{
privatekeyAlice,
privkeyBob,
}
scripts := [][]byte{
p2wpkhAlice.Script,
p2wpkhBob.Script,
}
if err := signTransaction(p, prvKeys, scripts, true, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedTxP2PKH(t *testing.T) {
/**
* This test attempts to broadcast a transaction composed by 1 input and 3
* outputs. The input of the transaction will be locked by a P2PKH script,
* while the outputs will be a legacy P2PKH for the receiver and the same P2PKH for the change. *
* The 3rd output is for the fees, that in Elements side chains are explicits.
**/
// Generate sender random key pair.
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2pkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
address, _ := p2pkh.PubKeyHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript := p2pkh.Script
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeScript := p2pkh.Script
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeValue, _ := elementsutil.ValueToBytes(500)
feeScript := []byte{}
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
txHex, err := fetchTx(utxos[0]["txid"].(string))
if err != nil {
t.Fatal(err)
}
tx, _ := transaction.NewTxFromHex(txHex)
updater.AddInNonWitnessUtxo(tx, 0)
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2pkh.Script}
if err := signTransaction(p, prvKeys, scripts, false, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedTxP2SH_P2WPKH(t *testing.T) {
/**
* This test attempts to broadcast a transaction composed by 1 input and 3
* outputs. The input of the transaction will be a legacy input locked by a
* p2sh(p2wpkh) script, while the outputs will be a legacy p2pkh for the
* receiver and the same legacy p2sh for the change.
* The 3rd output is for the fees, that in Elements side chains are explicits.
**/
// Generate sender random key pair.
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
p2sh, _ := payment.FromPayment(p2wpkh)
address, _ := p2sh.ScriptHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash, _ := hex.DecodeString(utxos[0]["txid"].(string))
txInputHash = elementsutil.ReverseBytes(txInputHash)
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript, _ := hex.DecodeString("76a91439397080b51ef22c59bd7469afacffbeec0da12e88ac")
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeScript := p2sh.Script
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2sh.Script)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2wpkh.Script}
witOpts := &signOpts{pubkeyScript: p2wpkh.WitnessScript}
if err := signTransaction(p, prvKeys, scripts, true, witOpts); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedTxP2WPKH(t *testing.T) {
/**
* This test attempts to broadcast a transaction composed by 1 input and 3
* outputs. The input of the transaction will be a native segwit input, thus
* locked by a p2wpkh script, while the outputs will be a legacy p2sh for the
* receiver and the same segwit p2wpkh for the change.
* The 3rd output is for the fees, that in Elements side chains are explicits.
**/
// Generate sender random key pair.
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
address, _ := p2wpkh.WitnessPubKeyHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript, _ := hex.DecodeString("76a91439397080b51ef22c59bd7469afacffbeec0da12e88ac")
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeScript := p2wpkh.WitnessScript
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2wpkh.WitnessScript)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2wpkh.Script}
if err := signTransaction(p, prvKeys, scripts, true, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedTxP2SH_P2MS(t *testing.T) {
/**
* This test attempts to broadcast a transaction composed by 1 input and 3
* outputs. The input of the transaction will be a legacy input locked by a
* p2sh(p2ms) multisig script, while the outputs will be a legacy p2pkh for
* the receiver and the same legacy p2sh for the change.
* The 3rd output is for the fees, that in Elements side chains are explicits.
**/
// Generate sender random key pair.
alice, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
alicePubkey := alice.PubKey()
bob, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
bobPubkey := bob.PubKey()
pubkeys := []*btcec.PublicKey{alicePubkey, bobPubkey}
p2sh, _ := payment.FromPublicKeys(pubkeys, 2, &network.Regtest, nil)
address, _ := p2sh.ScriptHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript, _ := hex.DecodeString("76a91439397080b51ef22c59bd7469afacffbeec0da12e88ac")
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeScript := p2sh.Script
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
prevTxHex, err := fetchTx(utxos[0]["txid"].(string))
if err != nil {
t.Fatal(err)
}
prevTx, _ := transaction.NewTxFromHex(prevTxHex)
if err := updater.AddInNonWitnessUtxo(prevTx, 0); err != nil {
t.Fatal(err)
}
alicePrvKeys := []*btcec.PrivateKey{alice}
scripts := [][]byte{p2sh.Redeem.Script}
opts := &signOpts{pubkeyScript: p2sh.Redeem.Script}
if err := signTransaction(p, alicePrvKeys, scripts, false, opts); err != nil {
t.Fatal(err)
}
bobPrvKeys := []*btcec.PrivateKey{bob}
if err := signTransaction(p, bobPrvKeys, scripts, false, opts); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedTxP2WSH_P2MS(t *testing.T) {
/**
* This test attempts to broadcast a transaction composed by 1 input and 3
* outputs. The input of the transaction will be a native segwit input locked
* by a p2wsh script, while the outputs will be a legacy p2pkh for the
* receiver and the same segwit p2wsh for the change.
* The 3rd output is for the fees, that in Elements side chains are explicits.
**/
// Generate sender random key pair.
alice, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
alicePubkey := alice.PubKey()
bob, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
bobPubkey := bob.PubKey()
pubkeys := []*btcec.PublicKey{alicePubkey, bobPubkey}
p2wsh, _ := payment.FromPublicKeys(pubkeys, 2, &network.Regtest, nil)
address, _ := p2wsh.WitnessScriptHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript, _ := hex.DecodeString("76a91439397080b51ef22c59bd7469afacffbeec0da12e88ac")
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeScript := p2wsh.WitnessScript
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2wsh.WitnessScript)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
scripts := [][]byte{p2wsh.Redeem.Script}
opts := &signOpts{script: p2wsh.Redeem.Script}
alicePrvKeys := []*btcec.PrivateKey{alice}
if err := signTransaction(p, alicePrvKeys, scripts, true, opts); err != nil {
t.Fatal(err)
}
bobPrvKeys := []*btcec.PrivateKey{bob}
if err := signTransaction(p, bobPrvKeys, scripts, true, opts); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedIssuanceTx(t *testing.T) {
/**
* This test attempts to broadcast an issuance transaction composed by 1
* P2WPKH input and 3 outputs. The input of the transaction will contain a new
* unblinded asset issuance with a defined reissuance token. The outputs will
* be a p2wpkh for both the asset and the relative token and another p2wpkh
* for the change (same of the sender for simplicity). A 4th unblinded output
* is for the fees, that in Elements side chains are explicits.
**/
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
address, _ := p2wpkh.WitnessPubKeyHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
changeScript := p2wpkh.WitnessScript
changeValue, _ := elementsutil.ValueToBytes(99999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
arg := AddIssuanceArgs{
Precision: 0,
Contract: &transaction.IssuanceContract{
Name: "Test",
Ticker: "TST",
Version: 0,
Precision: 0,
Entity: transaction.IssuanceEntity{
Domain: "test.io",
},
},
AssetAmount: 1000,
TokenAmount: 1,
AssetAddress: address,
TokenAddress: address,
}
if err := updater.AddIssuance(arg); err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2wpkh.WitnessScript)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2wpkh.Script}
if err := signTransaction(p, prvKeys, scripts, true, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastUnblindedZeroAssetValueIssuanceTx(t *testing.T) {
/**
* This test attempts to broadcast an issuance transaction composed by 1
* P2WPKH input and 3 outputs. The input of the transaction will contain a new
* unblinded asset issuance with a defined reissuance token. The outputs will
* be a p2wpkh for both the asset and the relative token and another p2wpkh
* for the change (same of the sender for simplicity). A 4th unblinded output
* is for the fees, that in Elements side chains are explicits.
**/
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
address, _ := p2wpkh.WitnessPubKeyHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
changeScript := p2wpkh.WitnessScript
changeValue, _ := elementsutil.ValueToBytes(99999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
feeScript := []byte{}
feeValue, _ := elementsutil.ValueToBytes(500)
feeOutput := transaction.NewTxOutput(lbtc, feeValue, feeScript)
// Create a new pset.
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{changeOutput, feeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
arg := AddIssuanceArgs{
Precision: 0,
Contract: &transaction.IssuanceContract{
Name: "Test",
Ticker: "TST",
Version: 0,
Precision: 0,
Entity: transaction.IssuanceEntity{
Domain: "test.io",
},
},
AssetAmount: 0,
TokenAmount: 1,
AssetAddress: address,
TokenAddress: address,
}
if err := updater.AddIssuance(arg); err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2wpkh.WitnessScript)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2wpkh.Script}
if err := signTransaction(p, prvKeys, scripts, true, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastBlindedTx(t *testing.T) {
/**
* This test attempts to broadcast a confidential transaction composed by 1
* P2WPKH unbinded input and 2 blinded outputs. The outputs will be a
* confidential p2sh for the receiver and a confidential p2wpkh for the
* change. A 3rd unblinded output is for the fees with empty script.
**/
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, nil)
address, _ := p2wpkh.WitnessPubKeyHash()
// Fund sender address.
if _, err := faucet(address); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(address)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)
receiverScript := h2b("76a91439397080b51ef22c59bd7469afacffbeec0da12e88ac")
receiverOutput := transaction.NewTxOutput(lbtc, receiverValue, receiverScript)
changeScript := p2wpkh.WitnessScript
changeValue, _ := elementsutil.ValueToBytes(39999500)
changeOutput := transaction.NewTxOutput(lbtc, changeValue, changeScript)
// Create a new pset with all the outputs that need to be blinded first
inputs := []*transaction.TxInput{txInput}
outputs := []*transaction.TxOutput{receiverOutput, changeOutput}
p, err := New(inputs, outputs, 2, 0)
if err != nil {
t.Fatal(err)
}
// Add sighash type and witness utxo to the partial input.
updater, err := NewUpdater(p)
if err != nil {
t.Fatal(err)
}
witValue, _ := elementsutil.ValueToBytes(uint64(utxos[0]["value"].(float64)))
witnessUtxo := transaction.NewTxOutput(lbtc, witValue, p2wpkh.WitnessScript)
if err := updater.AddInWitnessUtxo(witnessUtxo, 0); err != nil {
t.Fatal(err)
}
//blind outputs
inBlindingPrvKeys := [][]byte{{}}
outBlindingPrvKeys := make([][]byte, 2)
for i := range outBlindingPrvKeys {
pk, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
outBlindingPrvKeys[i] = pk.Serialize()
}
if err := blindTransaction(
p,
inBlindingPrvKeys,
outBlindingPrvKeys,
nil,
); err != nil {
t.Fatal(err)
}
// Add the unblinded outputs now, that's only the fee output in this case
addFeesToTransaction(p, 500)
prvKeys := []*btcec.PrivateKey{privkey}
scripts := [][]byte{p2wpkh.Script}
if err := signTransaction(p, prvKeys, scripts, true, nil); err != nil {
t.Fatal(err)
}
if _, err := broadcastTransaction(p); err != nil {
t.Fatal(err)
}
}
func TestBroadcastBlindedTxWithBlindedInput(t *testing.T) {
/**
* This test attempts to broadcast a confidential transaction composed by 1
* P2WPKH confidential input and 2 confidential outputs. The outputs will be a
* confidetial p2sh for the receiver and a confidential p2wpkh for the change.
* The 3rd output is for the fees, that in Elements side chains are explicit.
**/
privkey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
pubkey := privkey.PubKey()
blindingPrivateKey, err := btcec.NewPrivateKey()
if err != nil {
t.Fatal(err)
}
blindingPublicKey := blindingPrivateKey.PubKey()
p2wpkh := payment.FromPublicKey(pubkey, &network.Regtest, blindingPublicKey)
confidentialAddress, _ := p2wpkh.ConfidentialWitnessPubKeyHash()
// Fund sender address.
if _, err := faucet(confidentialAddress); err != nil {
t.Fatal(err)
}
// Retrieve sender utxos.
utxos, err := unspents(confidentialAddress)
if err != nil {
t.Fatal(err)
}
// The transaction will have 1 input and 3 outputs.
txInputHash := elementsutil.ReverseBytes(h2b(utxos[0]["txid"].(string)))
txInputIndex := uint32(utxos[0]["vout"].(float64))
txInput := transaction.NewTxInput(txInputHash, txInputIndex)
receiverValue, _ := elementsutil.ValueToBytes(60000000)