private void Code11()
{
var scanKey = new Key();
var spendKey = new Key();
BitcoinStealthAddress stealthAddress
= new BitcoinStealthAddress
(
scanKey: scanKey.PubKey,
pubKeys: new[] { spendKey.PubKey },
signatureCount: 1,
bitfield: null,
network: Network.Main);
var ephem = new Key();
StealthPayment payment = stealthAddress.CreatePayment(ephem);
Transaction transaction = new Transaction();
payment.AddToTransaction(transaction, Money.Coins(1.0m));
Console.WriteLine(transaction);
payment = stealthAddress.GetPayments(transaction, scanKey).FirstOrDefault();
//Optional check (GetPayment already do it)
BitcoinAddress expectedAddress = payment.StealthKeys[0].GetAddress(Network.Main);
bool hasPayment = transaction
.Outputs
.Any(o => o.ScriptPubKey.GetDestinationAddress(Network.Main) == expectedAddress);
Console.WriteLine(hasPayment);
////
payment = stealthAddress.GetPayments(transaction, scanKey).FirstOrDefault();
Key privateKey = spendKey.Uncover(scanKey, payment.Metadata.EphemKey);
expectedAddress = privateKey.PubKey.GetAddress(Network.Main);
bool isRightKey = transaction
.Outputs
.Any(o => o.ScriptPubKey.GetDestinationAddress(Network.Main) == expectedAddress);
Console.WriteLine(isRightKey);
}
//https://github.com/libbitcoin/libbitcoin/blob/master/test/stealth.cpp
public void BitFieldCanFetchTransaction()
{
var tests = new[]
{
new
{
Encoded = "deadbeef",
BitCount = 5,
Transaction = "0100000001bd365d65c6eeee2d3ae29c6e1b0fb22f70f0135220eac1273c92a13b6039ecdf000000006b48304502202551626a52a088ea585f2aaa8afe1c1b7bc52ea8e577e149f20f0f5f2fc54485022100913643c6a1e54b5284d1c108519d9243213373256ff95ab6c7e3d162175c9e28012102881c1427e826f230246197f7f693f1c923ad2afea1dad901d1c870f7e310c895ffffffff020000000000000000286a2606ab3099ae0359222b4a2dd9a21ebd70331794fb05b0bd605bd9660fdf895906b1a227edcbec306c3402000000001976a9142f62432f367dc3cf67e68f814cc2a3ed5b2e8cec88ac00000000",
}
, new
{
Encoded = "deadbeef",
BitCount = 5,
Transaction = "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",
},
new
{
Encoded = "deadbeef",
BitCount = 5,
Transaction = "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",
},
};
foreach (var test in tests)
{
var field = new BitField(TestUtils.ParseHex(test.Encoded), test.BitCount);
var transaction = new Transaction();
transaction.FromBytes(TestUtils.ParseHex(test.Transaction));
StealthPayment stealthOutput = field.GetPayments(transaction).FirstOrDefault();
Assert.NotNull(stealthOutput);
Assert.True(field.Match(stealthOutput.Metadata.BitField));
}
}
private bool Match(TxOut txout, StealthPayment[] payments)
{
return payments.Any(p=>p.SpendableScript.Same(txout.ScriptPubKey) && !txout.IsDust);
}
public void CanCreatePayment()
{
var tests = new[]
{
new CanCreatePaymentData
{
//sx stealth-newkey
StealthAddress = "vJmtjxSDxNPXL4RNapp9ARdqKz3uJyf1EDGjr1Fgqs9c8mYsVH82h8wvnA4i5rtJ57mr3kor1EVJrd4e5upACJd588xe52yXtzumxj",
ScanSecret = "3e49e7257cb31db997edb1cf8299af0f37e2663e2260e4b8033e49d39a6d02f2",
ScanPubKey = "025e58a31122b38c86abc119b9379fe247410aee87a533f9c07b189aef6c3c1f52",
SpendSecret = "aa3db0cfb3edc94de4d10f873f8190843f2a17484f6021a95a7742302c744748",
SpendPubKey = "03616562c98e7d7b74be409a787cec3a912122f3fb331a9bee9b0b73ce7b9f50af",
//sx newkey | sx wif-to-secret
EphemSecret = "9e63abaf8dcd5ea3919e6de0b6c544e00bf51bf92496113a01d6e369944dc091",
EphemPubKey = "03403d306ec35238384c7e340393335f9bc9bb4a2e574eb4e419452c4ea19f14b0",
//sx steatlh-uncover-secret [EphemPubKey] [ScanSecret] [SpendSecret]
StealthSecret = "4e422fb1e5e1db6c1f6ab32a7706d368ceb385e7fab098e633c5c5949c3b97cd",
//sx stealth-initiate [EphemSecret] [ScanPubKey] [SpendPubKey] (for sender)
//or
//sx stealth-uncover [EphemPubKey] [ScanSecret] [SpendPubKey] (for receiver)
StealthPubKey = "02726112ad39cb6bf848b1b1ef30b88e35286bf99f746c2be575f96c0e02a9357c",
},
//Need padding for to find the stealth secret
new CanCreatePaymentData {
StealthAddress = "vJmyTEybwCKz7W8y6vP62jo7RoyfLneiANcPLBBNYwn98EXzQRStMKqKGRiZhqscuQ6WKy2J3U3zfx72V3b2J6YvxxBcxUj4XMDsw7",
ScanSecret = "2f517d81cf30e47dbf4809321275bbfd92192af81a6141a17aa53e40bd28fe36",
ScanPubKey = "039d91ae0eebea6dc500fb57b704abce3d3fa700cc762a52bc5dcaee27770a8402",
SpendSecret = "71e33219884fc27011f8da9adcc730f0c2e940759bdb1b615764492bce04fcea",
SpendPubKey = "021a3d5b40ec83fc58b5a23207eb9c99b741d8f0e9f8b80f04f49cec915b540c40",
EphemSecret = "578ffe42c0fbfb324a31f41dbbcd8b1f910ce2f4d803444a83b18ae9f8ccd97e",
EphemPubKey = "03c190be0a1c6e50577b3dd637b1fff9344de31c2544ff3d815535c0515711150f",
StealthSecret = "006d138b4bcef0f09c8784c0cc68f2be4497a1a822d8d7b0519c5c0378b5cb45",
StealthPubKey = "0223a99278a5279ea93718503a42377067e72960eb808d8bff6defdd95d4feff76"
}
};
foreach (CanCreatePaymentData test in tests)
{
Key scan = AssertKeys(test.ScanSecret, test.ScanPubKey);
Key spend = AssertKeys(test.SpendSecret, test.SpendPubKey);
Key ephem = AssertKeys(test.EphemSecret, test.EphemPubKey);
Key stealth = AssertKeys(test.StealthSecret, test.StealthPubKey);
BitcoinStealthAddress address = spend.PubKey.CreateStealthAddress(scan.PubKey, KnownNetworks.Main);
Assert.Equal(test.StealthAddress, address.ToString());
//Try roundtrip
address = new BitcoinStealthAddress(address.ToBytes(), KnownNetworks.Main);
Assert.Equal(test.StealthAddress, address.ToString());
StealthPayment payment = address.CreatePayment(ephem);
Key generatedKey = spend.Uncover(scan, payment.Metadata.EphemKey);
if (stealth != null)
{
Assert.Equal(stealth.PubKey.Hash, payment.StealthKeys[0].ID);
Assert.Equal(stealth.ToBytes(), generatedKey.ToBytes());
}
PubKey uncoveredSender = spend.PubKey.UncoverSender(ephem, scan.PubKey);
PubKey uncovertedReceiver = spend.PubKey.UncoverReceiver(scan, ephem.PubKey);
AssertEx.CollectionEquals(uncoveredSender.ToBytes(), uncovertedReceiver.ToBytes());
AssertEx.CollectionEquals(generatedKey.PubKey.ToBytes(), uncovertedReceiver.ToBytes());
var transaction = new Transaction();
payment.AddToTransaction(transaction, 100);
}
}
public override Coins ScanCoins(Transaction tx, int height)
{
var payments = StealthPayment.GetPayments(tx, SpendKeys, Prefix, Scan);
return(new Coins(tx, txout => Match(txout, payments), height));
}
public override Coins ScanCoins(uint256 txId, Transaction tx, int height)
{
var payments = StealthPayment.GetPayments(tx, Address, Scan);
return(new Coins(tx, txout => Match(txout, payments), height));
}
