Esempio n. 1
0
func (w *SCWallet) UpdateInput(trans interfaces.ITransaction, index int, address interfaces.IAddress, amount uint64) error {

	we, adr, err := w.getWalletEntry([]byte(constants.W_RCD_ADDRESS_HASH), address)
	if err != nil {
		return err
	}

	in, err := trans.GetInput(index)
	if err != nil {
		return err
	}

	trans.GetRCDs()[index] = we.GetRCD() // The RCD must match the (possibly) new input

	in.SetAddress(adr)
	in.SetAmount(amount)

	return nil
}
Esempio n. 2
0
// Add the first transaction of a block.  This transaction makes the
// payout to the servers, so it has no inputs.   This transaction must
// be deterministic so that all servers will know and expect its output.
func (b *FBlock) AddCoinbase(trans interfaces.ITransaction) error {
	b.BodyMR = nil
	if len(b.Transactions) != 0 {
		return fmt.Errorf("The coinbase transaction must be the first transaction")
	}
	if len(trans.GetInputs()) != 0 {
		return fmt.Errorf("The coinbase transaction cannot have any inputs")
	}
	if len(trans.GetECOutputs()) != 0 {
		return fmt.Errorf("The coinbase transaction cannot buy Entry Credits")
	}
	if len(trans.GetRCDs()) != 0 {
		return fmt.Errorf("The coinbase transaction cannot have anyRCD blocks")
	}
	if len(trans.GetSignatureBlocks()) != 0 {
		return fmt.Errorf("The coinbase transaction is not signed")
	}

	// TODO Add check here for the proper payouts.

	b.Transactions = append(b.Transactions, trans)
	return nil
}
Esempio n. 3
0
func (w *SCWallet) SignInputs(trans interfaces.ITransaction) (bool, error) {

	data, err := trans.MarshalBinarySig() // Get the part of the transaction we sign
	if err != nil {
		return false, err
	}

	var numSigs int = 0

	inputs := trans.GetInputs()
	rcds := trans.GetRCDs()
	for i, rcd := range rcds {
		rcd1, ok := rcd.(*RCD_1)
		if ok {
			pub := rcd1.GetPublicKey()
			wex, err := w.db.Get([]byte(constants.W_ADDRESS_PUB_KEY), pub, new(WalletEntry))
			if err != nil {
				return false, err
			}
			we := wex.(*WalletEntry)
			if we != nil {
				var pri [constants.SIGNATURE_LENGTH]byte
				copy(pri[:], we.private[0])
				bsig := ed25519.Sign(&pri, data)
				sig := new(FactoidSignature)
				sig.SetSignature(bsig[:])
				sigblk := new(SignatureBlock)
				sigblk.AddSignature(sig)
				trans.SetSignatureBlock(i, sigblk)
				numSigs += 1
			}
		}
	}

	return numSigs == len(inputs), nil
}