func (b FBlock) ValidateTransaction(index int, trans interfaces.ITransaction) error { // Calculate the fee due. { err := trans.Validate(index) if err != nil { return err } } //Ignore coinbase transaction's signatures if len(b.Transactions) > 0 { err := trans.ValidateSignatures() if err != nil { return err } } fee, err := trans.CalculateFee(b.ExchRate) if err != nil { return err } tin, err := trans.TotalInputs() if err != nil { return err } tout, err := trans.TotalOutputs() if err != nil { return err } tec, err := trans.TotalECs() if err != nil { return err } sum, err := ValidateAmounts(tout, tec, fee) if err != nil { return err } if tin < sum { return fmt.Errorf("The inputs %s do not cover the outputs %s,\n"+ "the Entry Credit outputs %s, and the required fee %s", primitives.ConvertDecimalToString(tin), primitives.ConvertDecimalToString(tout), primitives.ConvertDecimalToString(tec), primitives.ConvertDecimalToString(fee)) } return nil }