private static Script CombineMultisig(Script scriptPubKey, TransactionChecker checker, byte[][] sigs1, byte[][] sigs2, HashVersion hashVersion) { // Combine all the signatures we've got: List <TransactionSignature> allsigs = new List <TransactionSignature>(); foreach (var v in sigs1) { if (TransactionSignature.IsValid(v)) { allsigs.Add(new TransactionSignature(v)); } } foreach (var v in sigs2) { if (TransactionSignature.IsValid(v)) { allsigs.Add(new TransactionSignature(v)); } } var multiSigParams = PayToMultiSigTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey); if (multiSigParams == null) { throw new InvalidOperationException("The scriptPubKey is not a valid multi sig"); } Dictionary <PubKey, TransactionSignature> sigs = new Dictionary <PubKey, TransactionSignature>(); foreach (var sig in allsigs) { foreach (var pubkey in multiSigParams.PubKeys) { if (sigs.ContainsKey(pubkey)) { continue; // Already got a sig for this pubkey } ScriptEvaluationContext eval = new ScriptEvaluationContext(); if (eval.CheckSig(sig, pubkey, scriptPubKey, checker, hashVersion)) { sigs.AddOrReplace(pubkey, sig); } } } // Now build a merged CScript: int nSigsHave = 0; Script result = new Script(OpcodeType.OP_0); // pop-one-too-many workaround foreach (var pubkey in multiSigParams.PubKeys) { if (sigs.ContainsKey(pubkey)) { result += Op.GetPushOp(sigs[pubkey].ToBytes()); nSigsHave++; } if (nSigsHave >= multiSigParams.SignatureCount) { break; } } // Fill any missing with OP_0: for (int i = nSigsHave; i < multiSigParams.SignatureCount; i++) { result += OpcodeType.OP_0; } return(result); }
public static Script operator +(Script a, IEnumerable<byte> bytes) { if(a == null) return new Script(Op.GetPushOp(bytes.ToArray())); return a + Op.GetPushOp(bytes.ToArray()); }
/// <summary> /// Mines a new genesis block, to use with a new network. /// Typically, 3 such genesis blocks need to be created when bootstrapping a new coin: for Main, Test and Reg networks. /// </summary> /// <param name="consensusFactory"> /// The consensus factory used to create transactions and blocks. /// Use <see cref="PosConsensusFactory"/> for proof-of-stake based networks. /// </param> /// <param name="coinbaseText"> /// Traditionally a news headline from the day of the launch, but could be any string or link. /// This will be inserted in the input coinbase transaction script. /// It should be shorter than 92 characters. /// </param> /// <param name="target"> /// The difficulty target under which the hash of the block need to be. /// Some more details: As an example, the target for the Stratis Main network is 00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff. /// To make it harder to mine the genesis block, have more zeros at the beginning (keeping the length the same). This will make the target smaller, so finding a number under it will be more difficult. /// To make it easier to mine the genesis block ,do the opposite. Example of an easy one: 00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff. /// Make the Test and Reg targets ones easier to find than the Main one so that you don't wait too long to mine the genesis block. /// </param> /// <param name="genesisReward"> /// Specify how many coins to put in the genesis transaction's output. These coins are unspendable. /// </param> /// <param name="version"> /// The version of the transaction and the block header set in the genesis block. /// </param> /// <example> /// The following example shows the creation of a genesis block. /// <code> /// Block genesis = MineGenesisBlock(new PosConsensusFactory(), "Some topical headline.", new Target(new uint256("000fffff00000000000000000000000000000000000000000000000000000000")), Money.Coins(50m)); /// BlockHeader header = genesis.Header; /// Console.WriteLine("Make a note of the following values:"); /// Console.WriteLine("bits: " + header.Bits); /// Console.WriteLine("nonce: " + header.Nonce); /// Console.WriteLine("time: " + header.Time); /// Console.WriteLine("version: " + header.Version); /// Console.WriteLine("hash: " + header.GetHash()); /// Console.WriteLine("merkleroot: " + header.HashMerkleRoot); /// </code> /// </example> /// <returns>A genesis block.</returns> public static Block MineGenesisBlock(ConsensusFactory consensusFactory, string coinbaseText, Target target, Money genesisReward, int version = 1) { if (target == null) { throw new ArgumentException($"Parameter '{nameof(target)}' cannot be null. Example use: new Target(new uint256(\"0000ffff00000000000000000000000000000000000000000000000000000000\"))"); } if (consensusFactory == null) { throw new ArgumentException($"Parameter '{nameof(consensusFactory)}' cannot be null. Use 'new ConsensusFactory()' for Bitcoin-like proof-of-work blockchains" + "and 'new PosConsensusFactory()' for Stratis-like proof-of-stake blockchains."); } if (string.IsNullOrEmpty(coinbaseText)) { throw new ArgumentException($"Parameter '{nameof(coinbaseText)}' cannot be null. Use a news headline or any other appropriate string."); } if (coinbaseText.Length >= 92) { throw new ArgumentException($"Parameter '{nameof(coinbaseText)}' should be shorter than 92 characters."); } if (genesisReward == null) { throw new ArgumentException($"Parameter '{nameof(genesisReward)}' cannot be null. Example use: 'Money.Coins(50m)'."); } DateTimeOffset time = DateTimeOffset.Now; uint unixTime = Utils.DateTimeToUnixTime(time); Transaction txNew = consensusFactory.CreateTransaction(); txNew.Version = (uint)version; txNew.Time = unixTime; txNew.AddInput(new TxIn() { ScriptSig = new Script( Op.GetPushOp(0), new Op() { Code = (OpcodeType)0x1, PushData = new[] { (byte)42 } }, Op.GetPushOp(Encoders.ASCII.DecodeData(coinbaseText))) }); txNew.AddOutput(new TxOut() { Value = genesisReward, }); Block genesis = consensusFactory.CreateBlock(); genesis.Header.BlockTime = time; genesis.Header.Bits = target; genesis.Header.Nonce = 0; genesis.Header.Version = version; genesis.Transactions.Add(txNew); genesis.Header.HashPrevBlock = uint256.Zero; genesis.UpdateMerkleRoot(); // Iterate over the nonce until the proof-of-work is valid. // This will mean the block header hash is under the target. while (!genesis.CheckProofOfWork()) { genesis.Header.Nonce++; if (genesis.Header.Nonce == 0) { genesis.Header.Time++; } } return(genesis); }
public Script GenerateScriptSig(Op[] ops, Script script) { var pushScript = Op.GetPushOp(script._Script); return(new Script(ops.Concat(new[] { pushScript }))); }
public Script GenerateScriptSig(TransactionSignature signature) { return(new Script( Op.GetPushOp(signature.ToBytes()) )); }
public TransactionSignature[] GetMultisigSignatures(Network network) { return(PayToMultiSigTemplate.Instance.ExtractScriptSigParameters(network, new Script(this.Pushes.Select(p => Op.GetPushOp(p)).ToArray()))); }
public Script GenerateScriptSig(Op[] ops, Script redeemScript) { Op pushScript = Op.GetPushOp(redeemScript._Script); return(new Script(ops.Concat(new[] { pushScript }))); }
public TransactionSignature?[]? GetMultisigSignatures() { return(PayToMultiSigTemplate.Instance.ExtractScriptSigParameters(new Script(Pushes.Select(p => Op.GetPushOp(p)).ToArray()))); }
public Script ToScript() { return(new Script(_Pushes.Select(p => Op.GetPushOp(p)).ToArray())); }
private static Block CreateGenesisBlock(uint nTime, uint nNonce, uint nBits, int nVersion, Money genesisReward) { string pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"; Script genesisOutputScript = new Script(Op.GetPushOp(Encoders.Hex.DecodeData("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f")), OpcodeType.OP_CHECKSIG); return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward); }