public byte[] CreatePrivateKeyScript(Transaction tx, int inputIndex, byte hashType, ECPrivateKeyParameters privateKey, ECPublicKeyParameters publicKey)
{
//TODO
var sha256 = new SHA256Managed();
var scriptEngine = new ScriptEngine(this.logger);
var publicAddress = CreatePublicAddress(publicKey);
var publicKeyScript = CreatePublicKeyScript(publicAddress);
var txSignature = scriptEngine.TxSignature(publicKeyScript.ToImmutableArray(), tx, inputIndex, hashType);
var txSignatureHash = sha256.ComputeDoubleHash(txSignature);
//Debug.WriteLine("Signing Tx: {0}".Format2(txSignature.ToHexDataString()));
//Debug.WriteLine("Signing Tx Hash: {0}".Format2(txSignatureHash.ToHexDataString()));
var signer = new ECDsaSigner();
signer.Init(forSigning: true, parameters: privateKey);
var signature = signer.GenerateSignature(txSignatureHash);
var r = signature[0];
var s = signature[1];
byte[] sigEncoded;
using (var stream = new MemoryStream())
{
using (var asn1Stream = new Asn1OutputStream(stream))
{
asn1Stream.WriteObject(new DerSequence(new DerInteger(r), new DerInteger(s)));
}
sigEncoded = stream.ToArray().Concat(hashType);
}
//Debug.WriteLine("Sig R: {0}".Format2(r.ToHexNumberStringUnsigned()));
//Debug.WriteLine("Sig S: {0}".Format2(s.ToHexNumberStringUnsigned()));
//Debug.WriteLine("Sig Encoded: {0}".Format2(sigEncoded.ToHexDataString()));
using (var privateKeyScript = new ScriptBuilder())
{
privateKeyScript.WritePushData(sigEncoded);
privateKeyScript.WritePushData(publicAddress);
//Debug.WriteLine("Private Script: {0}".Format2(privateKeyScript.GetScript().ToHexDataString()));
return(privateKeyScript.GetScript());
}
}
public void TestWritePushData65535()
{
var data = random.NextBytes(65535);
var expected = new byte[] { 0x4D }.Concat(0xFF).Concat(0xFF).Concat(data);
var actual = new ScriptBuilder();
actual.WritePushData(data);
CollectionAssert.AreEqual(expected, actual.GetScript());
}
public void TestWritePushData0()
{
var data = new byte[0];
var expected = new byte[] { 0x00 };
var actual = new ScriptBuilder();
actual.WritePushData(data);
CollectionAssert.AreEqual(expected, actual.GetScript());
}
public byte[] CreateOutput(byte[] publicKey)
{
using (var outputScript = new ScriptBuilder())
{
outputScript.WritePushData(publicKey);
outputScript.WriteOp(ScriptOp.OP_CHECKSIG);
return(outputScript.GetScript());
}
}
public byte[] CreateOutputFromPublicKeyHash(byte[] publicKeyHash)
{
using (var outputScript = new ScriptBuilder())
{
outputScript.WriteOp(ScriptOp.OP_DUP);
outputScript.WriteOp(ScriptOp.OP_HASH160);
outputScript.WritePushData(publicKeyHash);
outputScript.WriteOp(ScriptOp.OP_EQUALVERIFY);
outputScript.WriteOp(ScriptOp.OP_CHECKSIG);
return(outputScript.GetScript());
}
}
public byte[] CreateOutputFromPublicKeyHash(byte[] publicKeyHash)
{
using (var outputScript = new ScriptBuilder())
{
outputScript.WriteOp(ScriptOp.OP_DUP);
outputScript.WriteOp(ScriptOp.OP_HASH160);
outputScript.WritePushData(publicKeyHash);
outputScript.WriteOp(ScriptOp.OP_EQUALVERIFY);
outputScript.WriteOp(ScriptOp.OP_CHECKSIG);
return outputScript.GetScript();
}
}
public byte[] CreatePublicKeyScript(byte[] publicKey)
{
var publicKeyHash = RIPEMD160Static.ComputeHash(SHA256Static.ComputeHash(publicKey));
using (var publicKeyScript = new ScriptBuilder())
{
publicKeyScript.WriteOp(ScriptOp.OP_DUP);
publicKeyScript.WriteOp(ScriptOp.OP_HASH160);
publicKeyScript.WritePushData(publicKeyHash);
publicKeyScript.WriteOp(ScriptOp.OP_EQUALVERIFY);
publicKeyScript.WriteOp(ScriptOp.OP_CHECKSIG);
//Debug.WriteLine("Public Script: {0}".Format2(publicKeyScript.GetScript().ToHexDataString()));
return(publicKeyScript.GetScript());
}
}
public byte[] CreatePublicKeyScript(byte[] publicKey)
{
var publicKeyHash = RIPEMD160Static.ComputeHash(SHA256Static.ComputeHash(publicKey));
using (var publicKeyScript = new ScriptBuilder())
{
publicKeyScript.WriteOp(ScriptOp.OP_DUP);
publicKeyScript.WriteOp(ScriptOp.OP_HASH160);
publicKeyScript.WritePushData(publicKeyHash);
publicKeyScript.WriteOp(ScriptOp.OP_EQUALVERIFY);
publicKeyScript.WriteOp(ScriptOp.OP_CHECKSIG);
//Debug.WriteLine("Public Script: {0}".Format2(publicKeyScript.GetScript().ToHexDataString()));
return publicKeyScript.GetScript();
}
}
public void TestWritePushData4294967296()
{
var data = random.NextBytes(4294967296);
var actual = new ScriptBuilder();
actual.WritePushData(data);
}
public byte[] CreatePrivateKeyScript(Transaction tx, int inputIndex, byte hashType, ECPrivateKeyParameters privateKey, ECPublicKeyParameters publicKey)
{
//TODO
var scriptEngine = new ScriptEngine();
var publicAddress = CreatePublicAddress(publicKey);
var publicKeyScript = CreatePublicKeyScript(publicAddress);
var txSignature = scriptEngine.TxSignature(publicKeyScript, tx, inputIndex, hashType);
var txSignatureHash = SHA256Static.ComputeDoubleHash(txSignature);
//Debug.WriteLine("Signing Tx: {0}".Format2(txSignature.ToHexDataString()));
//Debug.WriteLine("Signing Tx Hash: {0}".Format2(txSignatureHash.ToHexDataString()));
var signer = new ECDsaSigner();
signer.Init(forSigning: true, parameters: privateKey);
var signature = signer.GenerateSignature(txSignatureHash);
var r = signature[0];
var s = signature[1];
byte[] sigEncoded;
using (var stream = new MemoryStream())
{
using (var asn1Stream = new Asn1OutputStream(stream))
{
asn1Stream.WriteObject(new DerSequence(new DerInteger(r), new DerInteger(s)));
}
sigEncoded = stream.ToArray().Concat(hashType);
}
//Debug.WriteLine("Sig R: {0}".Format2(r.ToHexNumberStringUnsigned()));
//Debug.WriteLine("Sig S: {0}".Format2(s.ToHexNumberStringUnsigned()));
//Debug.WriteLine("Sig Encoded: {0}".Format2(sigEncoded.ToHexDataString()));
using (var privateKeyScript = new ScriptBuilder())
{
privateKeyScript.WritePushData(sigEncoded);
privateKeyScript.WritePushData(publicAddress);
//Debug.WriteLine("Private Script: {0}".Format2(privateKeyScript.GetScript().ToHexDataString()));
return privateKeyScript.GetScript();
}
}
private ImmutableArray<byte> GetPushInt64Script(long value)
{
var script = new ScriptBuilder();
// push 0 onto the stack using OP_0
if (value == 0)
{
script.WriteOp(ScriptOp.OP_0);
}
// push -1 onto the stack using OP_1NEGATE
else if (value == -1)
{
script.WriteOp(ScriptOp.OP_1NEGATE);
}
// push 1-16 onto the stack using OP_1 to OP_16
else if (value >= 1 && value <= 16)
{
script.WriteOp((ScriptOp)(value + ((long)ScriptOp.OP_1 - 1)));
}
else
{
var valueBytes = SerializeScriptValue(value);
script.WritePushData(valueBytes);
}
return script.GetScript().ToImmutableArray();
}