public void QuickTestsOnKeyIdBytes()
{
var a = new KeyId("93e5d305cad2588d5fb254065fe48ce446028ba3");
var b = new ScriptId("93e5d305cad2588d5fb254065fe48ce446028ba3");
var b2 = new WitKeyId("93e5d305cad2588d5fb254065fe48ce446028ba3");
Assert.Equal(a.ToString(), b.ToString());
Assert.Equal(a.ToString(), b2.ToString());
Assert.Equal("93e5d305cad2588d5fb254065fe48ce446028ba3", a.ToString());
var bytes = Encoders.Hex.DecodeData("93e5d305cad2588d5fb254065fe48ce446028ba3");
Assert.True(StructuralComparisons.StructuralComparer.Compare(a.ToBytes(), b.ToBytes()) == 0);
Assert.True(StructuralComparisons.StructuralComparer.Compare(b2.ToBytes(), b.ToBytes()) == 0);
var c = new KeyId(bytes);
var d = new ScriptId(bytes);
var d2 = new WitKeyId(bytes);
Assert.Equal(a, c);
Assert.Equal(d, b);
Assert.Equal(b2, d2);
Assert.Equal(c.ToString(), d.ToString());
Assert.Equal(c.ToString(), d2.ToString());
Assert.Equal("93e5d305cad2588d5fb254065fe48ce446028ba3", c.ToString());
Assert.True(StructuralComparisons.StructuralComparer.Compare(c.ToBytes(), d.ToBytes()) == 0);
Assert.True(StructuralComparisons.StructuralComparer.Compare(c.ToBytes(), d2.ToBytes()) == 0);
var e = new WitScriptId("93e5d305cad2588d5fb254065fe48ce446028ba380e6ee663baea9cd10550089");
Assert.Equal("93e5d305cad2588d5fb254065fe48ce446028ba380e6ee663baea9cd10550089", e.ToString());
bytes = Encoders.Hex.DecodeData("93e5d305cad2588d5fb254065fe48ce446028ba380e6ee663baea9cd10550089");
var e2 = new WitScriptId(bytes);
Assert.Equal(e, e2);
}
public Script GenerateScriptPubKey(KeyId pubkeyHash)
{
return(new Script(
OpcodeType.OP_DUP,
OpcodeType.OP_HASH160,
Op.GetPushOp(pubkeyHash.ToBytes()),
OpcodeType.OP_EQUALVERIFY,
OpcodeType.OP_CHECKSIG
));
}
public static void CheckTransaction(IStateRepositoryRoot stateRepositoryRoot, Transaction transaction)
{
foreach (TxOut output in transaction.Outputs)
{
if (PayToPubkeyHashTemplate.Instance.CheckScriptPubKey(output.ScriptPubKey))
{
KeyId p2pkhParams = PayToPubkeyHashTemplate.Instance.ExtractScriptPubKeyParameters(output.ScriptPubKey);
var to = new uint160(p2pkhParams.ToBytes());
if (stateRepositoryRoot.GetAccountState(to) != null)
{
new ConsensusError("p2pkh-to-contract", "attempted send directly to contract address. use OP_CALL instead.").Throw();
}
}
}
}
private void CheckTransaction(Transaction transaction)
{
foreach (TxOut output in transaction.Outputs)
{
if (PayToPubkeyHashTemplate.Instance.CheckScriptPubKey(output.ScriptPubKey))
{
KeyId p2pkhParams = PayToPubkeyHashTemplate.Instance.ExtractScriptPubKeyParameters(output.ScriptPubKey);
uint160 to = new uint160(p2pkhParams.ToBytes());
if (this.ContractCoinviewRule.OriginalStateRoot.GetAccountState(to) != null)
{
new ConsensusError("p2pkh-to-contract", "attempted send directly to contract address. use OP_CALL instead.").Throw();
}
}
}
}
public void ReadWrite(BitcoinStream stream)
{
if (stream.Serializing)
{
var ms = new MemoryStream();
var bs = new BitcoinStream(ms, true)
{
Type = SerializationType.Hash
};
if (KeyId != null)
{
stream.ReadWrite(new uint160(KeyId.ToBytes()));
}
else
{
bs.ReadWriteAsCompactVarInt(ref Height);
bs.ReadWriteAsCompactVarInt(ref Index);
}
var packBytes = ms.ToArray();
stream.ReadWriteAsVarString(ref packBytes);
}
else
{
var packVar = new VarString();
stream.ReadWrite(ref packVar);
var bs = new BitcoinStream(packVar.GetString());
if (packVar.Length >= 20)
{
var keyHash = uint160.Zero;
stream.ReadWrite(ref keyHash);
KeyId = new KeyId(keyHash);
}
else
{
bs.ReadWriteAsCompactVarInt(ref Height);
bs.ReadWriteAsCompactVarInt(ref Index);
}
}
}
/// <summary>
/// Creates a cold staking script.
/// </summary>
/// <remarks>Two keys control the balance associated with the script.
/// The hot wallet key allows transactions to only spend amounts back to themselves while the cold
/// wallet key allows amounts to be moved to different addresses. This makes it possible to perform
/// staking using the hot wallet key so that even if the key becomes compromised it can't be used
/// to reduce the balance. Only the person with the cold wallet key can retrieve the coins and move
/// them elsewhere. This behavior is enforced by the <see cref="OP_CHECKCOLDSTAKEVERIFY"/>
/// opcode within the script flow related to hot wallet key usage. It sets the <see cref="PosTransaction.IsColdCoinStake"/>
/// flag if the transaction spending an output, which contains this instruction, is a coinstake
/// transaction. If this flag is set then further rules are enforced by <see cref="Stratis.Bitcoin.Features.Consensus.Rules.CommonRules.PosColdStakingRule"/>.
/// </remarks>
/// <param name="hotPubKeyHash">The hot wallet public key hash to use.</param>
/// <param name="coldPubKeyHash">The cold wallet public key hash to use.</param>
/// <returns>The cold staking script.</returns>
/// <seealso cref="Consensus.Rules.CommonRules.PosColdStakingRule"/>
public Script GenerateScriptPubKey(KeyId hotPubKeyHash, KeyId coldPubKeyHash)
{
// The initial stack consumed by this script will be set up differently depending on whether a
// hot or cold pubkey is used - i.e. either <scriptSig> 0 <coldPubKey> OR <scriptSig> 1 <hotPubKey>.
return(new Script(
// Duplicates the last stack entry resulting in:
// <scriptSig> 0/1 <coldPubKey/hotPubKey> <coldPubKey/hotPubKey>.
#pragma warning disable SA1114 // Parameter list must follow declaration
OP_DUP,
#pragma warning restore SA1114 // Parameter list must follow declaration
// Replaces the last stack entry with its hash resulting in:
// <scriptSig> 0/1 <coldPubKey/hotPubKey> <coldPubKeyHash/hotPubKeyHash>.
OP_HASH160,
// Rotates the top 3 stack entries resulting in:
// <scriptSig> <coldPubKey/hotPubKey> <coldPubKeyHash/hotPubKeyHash> 0/1.
OP_ROT,
// Consumes the top stack entry and continues from the OP_ELSE if the value was 0. Results in:
// <scriptSig> <coldPubKey/hotPubKey> <coldPubKeyHash/hotPubKeyHash>.
OP_IF,
// Reaching this point means that the value was 1 - i.e. the hotPubKey is being used.
// Executes the opcode as described in the remarks section. Stack remains unchanged.
OP_CHECKCOLDSTAKEVERIFY,
// Pushes the expected hotPubKey value onto the stack for later comparison purposes. Results in:
// <scriptSig> <hotPubKey> <hotPubKeyHash> <hotPubKeyHash for comparison>.
Op.GetPushOp(hotPubKeyHash.ToBytes()),
// The code contained in the OP_ELSE is executed when the value was 0 - i.e. the coldPubKey is used.
OP_ELSE,
// Pushes the expected coldPubKey value onto the stack for later comparison purposes. Results in:
// <scriptSig> <coldPubKey> <coldPubKeyHash> <coldPubKeyHash for comparison>.
Op.GetPushOp(coldPubKeyHash.ToBytes()),
OP_ENDIF,
// Checks that the <coldPubKeyHash/hotPubKeyHash> matches the comparison value and removes both values
// from the stack. The script fails at this point if the values mismatch. Results in:
// <scriptSig> <coldPubKey/hotPubKey>.
OP_EQUALVERIFY,
// Consumes the top 2 stack entries and uses those values to verify the signature. Results in:
// true/false - i.e. true if the signature is valid and false otherwise.
OP_CHECKSIG));
}
public AccountRestrictedKeyId(KeyId keyId, int accountId) : this(keyId.ToBytes(), accountId)
{
}