// Creates an ethereum address from a create transaction
// If the tx doesn't create a contract, CreateAddress returns nil
func (tx *Transaction) CreateAddress() []byte {
if tx.Recipient != nil {
return nil
}
data, _ := rlp.EncodeToBytes([]interface{}{tx.from, tx.Nonce})
hw := sha3.NewKeccak256()
hw.Write(data)
b := hw.Sum(nil)
return b[12:]
}
// rlp encode and hash (for tx sign bytes)
func rlpHash(x interface{}) (h common.Hash) {
hw := sha3.NewKeccak256()
rlp.Encode(hw, x)
hw.Sum(h[:0])
return h
}
