First of all, it should be mentioned that there is an opinion considering that quantum computers won't ever be developed. It is grounded by the fact that tech giants like IBM, Microsoft, Google did not manage to create a stable and reliable computer. However, Google made the best with a 72 qubit quantum computer, though the share of errors during computation is too high.
However, let's disclose the optimistic scenario which considers quantum computers will be developed. There are now two general options for developers:
- making cryptography more complex and reliable in any way
- creation of quantum blockchain
There are three companies that have concepts to debuff quantum threat:
- Blockchain project Quantum-Resistant Ledger - company offers to use algorithm that allows to generate new key for each operation. For example, you made a transaction, at this moment it is reflected in blockchain and thanks to the new algorithm enforced some who wants to hack your wallet cannot bound it to the transaction you made, thus he cannot hack your wallet.
- IOTA - is about to propose us solution for IoT and it realizes another option which considers complexing operations executed in blockchain to ternary instead of binary. For now realization of the solution is full of bag and demands too much computational powers.
DapCash - it is a quantum blockchain built on post-quantum algorithms. If it is hard to puzzle out with bitcoin exploiting PoW consensus algorithm, then it would almost impossible to puzzle out the way DapCash blockchain works as it is built on the multiple blockchain, exploits different
blockchains with different
consensus algorithms executing at the same time.