public void AddSignature(byte[] privatekey, AccountStore account_store)
{
Transaction.Types.Contract contract = this.transaction.RawData.Contract[0];
byte[] owner = GetOwner(contract);
int permission_id = contract.PermissionId;
AccountCapsule account = account_store.Get(owner);
if (account == null)
{
throw new PermissionException("Account is not exist.");
}
Permission permission = account.GetPermissionById(permission_id);
if (permission == null)
{
throw new PermissionException("Permission is not exist");
}
if (permission_id != 0)
{
if (permission.Type != Permission.Types.PermissionType.Active)
{
throw new PermissionException("Permission type is error");
}
if (Wallet.CheckPermissionOperations(permission, contract))
{
throw new PermissionException("Invalid permission");
}
}
List <ByteString> approves = new List <ByteString>();
ECKey ec_key = ECKey.FromPrivateKey(privatekey);
byte[] address = Wallet.PublickKeyToAddress(ec_key.PublicKey);
if (this.transaction.Signature.Count > 0)
{
CheckWeight(permission, new List <ByteString>(this.transaction.Signature), this.GetRawHash().Hash, approves);
if (approves.Contains(ByteString.CopyFrom(address)))
{
throw new PermissionException(Wallet.AddressToBase58(address) + "had signed!");
}
}
long weight = GetWeight(permission, address);
if (weight == 0)
{
throw new PermissionException(
privatekey.ToHexString() + " address is " +
Wallet.AddressToBase58(address) + "but it is not contained of permission.");
}
ECDSASignature signature = ec_key.Sign(this.GetRawHash().Hash);
this.transaction.Signature.Add(ByteString.CopyFrom(signature.ToByteArray()));
}
public static bool ValidateSignature(Transaction tx, byte[] hash, DatabaseManager db_manager)
{
Permission permission = null;
AccountStore account_store = db_manager.Account;
Transaction.Types.Contract contract = tx.RawData.Contract?[0];
int permission_id = contract.PermissionId;
byte[] owner = GetOwner(contract);
AccountCapsule account = account_store.Get(owner);
if (account == null)
{
if (permission_id == 0)
{
permission = AccountCapsule.GetDefaultPermission(ByteString.CopyFrom(owner));
}
else if (permission_id == 2)
{
permission = AccountCapsule.CreateDefaultActivePermission(ByteString.CopyFrom(owner), db_manager);
}
}
else
{
permission = account.GetPermissionById(permission_id);
}
if (permission == null)
{
throw new PermissionException("Permission is not exist");
}
if (permission_id != 0)
{
if (permission.Type != Permission.Types.PermissionType.Active)
{
throw new PermissionException("Permission type is error");
}
if (!Wallet.CheckPermissionOperations(permission, contract))
{
throw new PermissionException("Invalid Permission");
}
}
return(CheckWeight(permission, new List <ByteString>(tx.Signature), hash, null) >= permission.Threshold);
}