public Script GenerateScriptPubKey(FederationId federationId)
{
var ops = new List <Op>();
ops.Add(Op.GetPushOp(federationId.ToBytes()));
ops.Add(OpcodeType.OP_FEDERATION);
ops.Add(OpcodeType.OP_CHECKMULTISIG);
return(new Script(ops));
}
/// <summary>
/// Creates a new federation from a set of transaction signing keys.
/// </summary>
/// <param name="transactionSigningPubKeys">A list of transaction signing PubKeys.</param>
/// <param name="signaturesRequired">The amount of signatures required to ensure that the transaction is fully signed.</param>
public Federation(IEnumerable<PubKey> transactionSigningPubKeys, int? signaturesRequired = null)
{
// Ensures that the federation id will always map to the same members in the same order.
this.transactionSigningKeys = transactionSigningPubKeys.OrderBy(k => k.ToHex()).ToArray();
this.signaturesRequired = signaturesRequired ?? (this.transactionSigningKeys.Length + 1) / 2;
// The federationId is derived by XOR'ing all the genesis federation members.
byte[] federationId = this.transactionSigningKeys.First().ToBytes();
foreach (PubKey pubKey in this.transactionSigningKeys.Skip(1))
{
byte[] pubKeyBytes = pubKey.ToBytes();
for (int i = 0; i < federationId.Length; i++)
federationId[i] ^= pubKeyBytes[i];
}
this.Id = new FederationId(federationId);
this.MultisigScript = PayToFederationTemplate.Instance.GenerateScriptPubKey(this.Id);
}
public IFederation GetFederation(FederationId federationId)
{
return(this.federations.TryGetValue(federationId, out IFederation federation) ? federation : null);
}