How is it possible to achieve privacy and confidentiality in smart contracts

Question

How can I be assure that the smart contract I have written is private and confidential. If I have an app that require smart contracts where I want a confidential transaction to happen between two parties,  Is it possible to do so??

Answer 1

Any contract code written on the blockchain cannot be hacked or manipulated. People can execute the code written on the blockchain but they cannot do anything more than that.

So, your privacy is always intact and nobody can modify your code. Anyone could see the compiled bytecode, but they cannot see how it works. So your contract is public but as long as you don't publish the address there's no problem. Still I would suggest you to keep the information private to the chain.